Frequency Algebra Questionnaire

How to write answers EXAMPLE question1. A question2. D

Display the set of data in a cumulative frequency histogram.

Students’ Pets
Number of Pets Tally Frequency
0-1 | | 2
2-3 | 1
4-5 | 1
6-7 | | 2
8-9 | | | 3
Question 1 options:
 

 

 

 

Question 2 (5 points)

The tables show the number of points scored by two basketball teams this season.

Red Hawks

Points Scored

42 59 50 37 36 43 44 38
40 56 49 52 46 47 55 31
Hurricanes

Points Scored

45 40 49 42 50 46 45 37
40 42 51 48 45 43 46 47

Use a graphing calculator to construct a box-and-whisker plot for the Red Hawks’ number of points scored. Describe the shape of the distribution.

Question 2 options:

Question 3 (5 points)

Find the mean. Round to the nearest tenth if necessary.

29, 22, 16, 10, 21, 23, 22, 29

Question 3 options:

Question 4 (5 points)

The table shows the grade that 4 students received on a math test. Find the bar graph that represents the grades.

Student Marks
John 71
Tyler 60
Jack 77
Levi 60
Question 4 options:

Question 5 (5 points)

Display the set of data in a histogram.

Weekly TV Viewing
Time (hrs) Tally Frequency
0 – 4 3
5 – 9 14
10 – 14 7
15 – 19 12
Question 5 options:
 

 

 

 

Question 6 (5 points)

Use a graphing calculator to construct a histogram for the data, and use it to describe the shape of the distribution.

9, 12, 12, 6, 22, 32, 35, 37, 8, 4, 40, 6, 4, 10, 22, 34, 35, 29

16, 15, 13, 17, 18, 20, 13, 13, 18, 24, 23, 10, 16, 22, 10, 13, 26, 20

Question 6 options:

Question 7 (5 points)

Find the median. Round to the nearest tenth if necessary.

49, 13.9, 5.9, 16.6, 43.1, 11.2, 36.8, 43.7, 22.9, 45.1, 44.2

Question 7 options:

Question 8 (5 points)

Describe the center and spread of the data using either the mean and standard deviation or the five-number summary. Justify your choice by constructing a histogram for the data.

9, 1, 29, 10, 5, 39, 29, 4, 24, 8, 3, 33, 13, 32, 23, 32, 39, 10

18, 26, 26, 10, 9, 18, 15, 17, 12, 18, 9, 15, 9, 24, 12, 22, 20, 15

Question 8 options:

range: 38, median: 16, half of the data are between 9.5 and 25

mean: 17.7, standard deviation: 100

Question 9 (5 points)

Find the median. Round to the nearest tenth if necessary.

35, 24, 32, 24, 17, 33, 39, 23

Question 9 options:

Question 10 (5 points)

Find the mode of each set of data.

23, 30, 36, 29, 19, 33, 15, 36

Question 10 options:

Question 11 (5 points)

The tables show the number of points scored by two basketball teams this season.

Red Hawks

Points Scored

42 59 50 37 36 43 44 38
40 56 49 52 46 47 55 31
Hurricanes

Points Scored

45 40 49 42 50 46 45 37
40 42 51 48 45 43 46 47

What conclusion can you draw about the number of points scored by the Red Hawks and the Hurricanes?

Question 11 options:

Question 12 (5 points)

Draw a dot plot for the set of data.

0, 3, 1, 3, 1, 2, 1, 5, 2, 0, 1, 2

Question 12 options:
 

 

 

 

Question 13 (5 points)

Display the set of data in a cumulative frequency histogram.

Students’ Pets
Number of Pets Tally Frequency
0-1 | | | 3
2-3 | | 2
4-5 | | 2
6-7 | 1
8-9 | 1
Question 13 options:
 

 

 

 

Question 14 (5 points)

The table shows the prices of electronics at a store. Find the dot plot with a scaled number line that represents the prices in the table.

Sale Prices ($)
$10.43 $36.05 $22.11 $48.92
$43.28 $40.66 $56.39 $27.00
$22.16 $19.45 $69.98 $34.82
Question 14 options:
 

 

 

 

Question 15 (5 points)

Find the variance. Round to the nearest tenth.

{6, 6, 7, 17, 20, 20}

Question 15 options:

Question 16 (5 points)

Find the mean. Round to the nearest tenth if necessary.

37.4, 11.7, 35.4, 18.6, 5.7, 48.8, 18.9, 30, 15.1, 26.6, 35.7, 40.2

Question 16 options:

Question 17 (5 points)

Find the range for each set of data.

71, 53, 102, 69, 100, 68, 104, 92, 90, 120, 64, 120, 71, 89, 105, 110

Question 17 options:

Question 18 (5 points)

Find the interquartile range.
6, 8, 9, 30, 30, 36, 38, 54, 64, 70, 75, 81, 93

Question 18 options:

Question 19 (5 points)

Find the mode of each set of data.

59, 48, 88, 24, 31, 76, 68, 88, 77, 18, 88

Question 19 options:

Question 20 (5 points)

Jason’s and Colleen’s quiz scores for the first quarter are shown in the tables below.

Jason’s Quiz Scores
13 19 18 19 17 16 18 17
14 16 11 15 19 20 18 20
Colleen’s Quiz Scores
14 11 13 14 15 12 10 11
16 12 15 12 13 13 13 14

Use a graphing calculator to construct a histogram for Jason’s quiz scores. Describe the shape of the distribution.

Question 20 options:

MATH 110-Quadratic Formula & Runaway Truck Ramp Discussion- AMU .

W2

Topic : The Quadratic Formula

Include what you like or don’t like about it and why you think it may be helpful to others.

In the body of your text, also include a link to the site since it is sometimes difficult to find a specific item among all the resources. That way your classmates can also benefit from the site – or avoid it, depending on your review!

W3

Topic :What is a runaway truck ramp?

I would like you to find out about the material and describe the answer in your own words. Most of these topics require some research. Don’t forget that you must give attribution to your source. Be sure to cut and paste the URL of the site from which you got the information.

W4

Question: Jarod is having a problem with rabbits getting into his vegetable garden, 10) so he decides to fence it in. The length of the garden is 8 feet more than 3 times the width. He needs 64 feet of fencing to do the job. Find the length and width of the garden.

Instructions demonstrate its solution for the rest of us. Explain how you got the answer and show your work

MATH 107-Algebraic Functions Quiz- UMGC

University of Maryland University College Math 107 – College Algebra Quiz 5 Free Response, Multiple Choice, and Yes/No Problems, 6 Points Each. You may write answers after problems (you may use Microsoft Equation). If you prefer handwriting, prepare you answer sheet, scan it, and prepare a file in PDF format. Write an exact answers, using fractions or radicals as needed. Simplify answers if possible. 1. Given that f(x) = 55x + 22 and g(x) = x3, find (f ◦ g)(− 3). 2. Find (f ◦ g)(x) and (g ◦ f)(x) for f ( x) = 5 x − 4, g ( x) = x+4 . 5 3. Find ( f g )( x) and ( g f )( x) and the domain of each. f ( x) = 2 x + 1, g ( x) = x . 4. Choose the graph that shows a graph of a one-to-one function and its inverse (shown red and dashed). A C B D 5. Determine whether the function f ( x) = x + 2 is one-to-one. Yes 6. Find the inverse of the function f ( x) = − No 3 . x +1 2 In problems 7-8, solve radical equations. 7. x + 1 + 1 = x 8. 6x + 7 = x + 2 x 1 9. Choose the correct graph for the function y =   . 2 A B C D 10. Choose the correct graph for the function f ( x) = −0.35e− x + 3 . A B 11. Find the domain of the function H ( x) = log 7 x9 . A. All positive real numbers. B. All nonzero real numbers. C. All real numbers except 7. D. All real numbers. 12. Find the logarithm. log 5 54 C D 3 13. Find the logarithm. log10−8 14. Choose the correct graph for the function y = log8 x A B C D 15. Choose the correct graph. f ( x) = 3x is in the solid red line. f −1 ( x) = log 3 x is the dashed blue line. A B 16. For the function f ( x) = log3 ( x + 1) find: (a) The domain in interval notation (b) The vertical asymptote C D

Express the Solution in Set Notation Algebra Questions Solution in Set Notation Algebra Questions.

Assignment # 6. Solving Inequalities Section 2, topic 5 Part 1 1. Match the inequalities below with one of the statements in the table. Not all inequalities will be used. Assignment # 6. Solving Inequalities Section 2, topic 5 Part 1 1. Match the inequalities below with one of the statements in the table. Not all inequalities will be used.

Solve the Equation Analytically Problem-University of Maryland Global Campus .

I’m working on a algebra question and need a sample draft to help me learn.

 

solve the equation analytically

1. log(3x − 1) = log(4 − x)

Mathematical Formula for Business Partners Questions-University of Florida .

I’m working on a algebra project and need an explanation and answer to help me learn.

 

I have the following fact scenario. A group of 3 business partners each own 1/3 of a small company. Owner A has brought in a large client and solely wants them working on their files. Owner A desires to adjust the level of compensation for this one client since they brought the client in and is doing all the upfront work on this one client. The other partners will assist with the post job work.

Owner A wants 2/3 of the gross profit/revenue on this client’s files. Due to the complexities in bookkeeping and the fact that Owner A will receive a 1/3 of the Net profit from being an owner of the company, the 3 have agreed to do a referral fee to Owner A upfront, and remaining balance will go to the company, which Owner A will eventually receive 1/3. Essentially I am having trouble coming up with a formula that is consistent as the revenue per file changes that always gives Owner A 2/3 of the Gross Revenue. Ultimately this formula will need to be put into excel to confirm based upon the files assigned to Owner A.

GP= Gross Profit

NP = Net Profit after Referral Fee = GP – X * GP

X = Percentage of Referral Fee

For instance, I have explored

.6666GP = X * GP + .3333 * NP

.6666 GP = XGP +.3333(GP-XGP)

2GP = XGP + GP – XGP

However, that is where I am lost as 2GP cannot equal 1GP.

Any assistance would be greatly appreciated.

Coordinate Plane Algebra Questions-University of Maryland Global Campus .

I’m working on a algebra practice test / quiz and need support to help me learn.

 

3 – Suppose receiving stations A, B, and C are located on a coordinate plane at the points (1, 4), (-3, -1), and (5, 2). Let the distances from the earthquake epicenter to these stations be 2 units, 5 units, and 4 units, respectively. Where on the coordinate plane is the epicenter located?

6- Find the function g(x)=ax+b whose graph can be obtained by translating the graph of f(x)=3x down 2 units and to the right 3 units.

8- An artist has sold a painting for $410,000. He needs some of the money in 6 months and the rest in 1 year. He can get a Treasury bond for 6 months at 2.65% and one for a year at 2.91%. His broker tells him the two investments will earn a total of $8671. How much should be invested at each rate to obtain that amount of interest? First indicate the amount to be invested at 2.65%, then indicate the amount to be invested at 2.91%. (Round your answers to the nearest whole number and do not use commas or dollar symbols in your answer.)

11- A PTA group sold homemade donuts to raise money for new computers. The donuts were sold for $7.00 per box and $0.50 for a single donut. If the PTA group raised $600 and sold 78 boxes, how many single donuts did they sell?

13- The area of a single room apartment is advertised as 171 square feet. You call the facility and are told that the length of the room is 10 feet longer than its width. Which of the following is one of the two dimensions of the room?

14- Find two numbers whose sum is 7500 and whose product is the maximum value. (Round your answer to the nearest whole number.)

20- A standard piece of notebook paper measuring 8.5 inches by 11 inches is to be made into a box with an open top by cutting equal-size squares from each corner and folding up the sides. Let x{“version”:”1.1″,”math”:”x”} represent the length of a side of each such square (in inches). Find the maximum volume of the box in cubic inches. (Round your answer to four significant digits.)

22 – The millage rate is the amount of property tax per $1000 of the taxable value of a home. For a particular county, the millage rate is 29 mil. A city within the county also imposes a flat fee of $101 per home. Which of the following models the taxable value of a home (in $1000) based on dollars of property tax paid on the home?

28- The traditional IRA (individual retirement account) is a common tax-deferred saving plan in the United States. Eared income deposited into an IRA is not taxed in the current year, and no taxes are incurred on the interest paid in subsequent years. However, when you withdraw the money from the account after age 59.5, you pay taxes on the entire amount you withdraw.

Suppose you deposited $5000 of earned income into an IRA, you can earn an annual interest rate of 4%, and you are in a 25% tax bracket. Also, suppose that you deposit the $5000 at age 25 and withdraw it at age 60, and that interest is compounded continuously. Suppose that instead of depositing the money into an IRA, you pay taxes on the money and the annual interest. How much money will you have at age 60?

MATH 132- Section 7 Universal Set Algebra Worksheet- University of Nevada Las Vegas.

10/11/21, 10:12 PM Quiz: Section 7.1 Section 7.1 Started: Oct 10 at 2:38pm Quiz Instructions Question 1 6 pts Given the following sets: U = {a, b, c, d, e, f , g, h} A = {b, d, e, g, h} ; B = {c, d, e, g} ; C = {b, g, h} and knowing that U is the Universal Set (i.e., the set of all elements under consideration), answer the following questions. Enter your answers in the boxes below as {a, b, c, d, e} with no space entered before or after each comma, and numbers or letters should be entered in proper ascending order as shown above. a) b) c) d) ¯ ¯ ¯ ¯ ¯ ¯ ¯ ¯ A ∩ C = (A ∪ B) ∩ (A ∪ C ) = A ∪ (B ∩ C ) = ¯ ¯ ¯ ¯ B ∩ C = For the following questions, enter true or false, without capitalizing the first letter. e) Is A ⊆ B a true or a false statement? f) Is B ⊆ C a true or a false statement? g) Is C ⊆ B a true or a false statement? https://unlv.instructure.com/courses/102986/quizzes/367217/take 1/6 10/11/21, 10:12 PM h) Quiz: Section 7.1 Is a true or a false statement? C ⊆ A Question 2 6 pts Given the following sets: U = {5, 6, 7, 8, 9, 30, 54, 68, 71} A = {5, 9, 30, 71} ; B = {7, 8, 9, 54, 68} ; C = {9, 30} and knowing that U is the Universal Set (i.e., the set of all elements under consideration), answer the following questions. Enter your answers in the boxes below as {a, b, c, d, e} with no space entered before or after each comma, and numbers or letters should be entered in proper ascending order as shown above. a) ¯ ¯ ¯ ¯ b) ¯ ¯¯¯ ¯¯¯ ¯¯¯ ¯¯ ¯ c) A ∪ C = B ∩ A = ¯ ¯¯ ¯¯¯ ¯¯¯ ¯¯ ¯ ¯ A ∩ (B ∩ C) = For the following questions, enter true or false, without capitalizing the first letter. d) Is e) Is f) Is C ⊆ B A ⊆ C C ⊆ A a true or a false statement? a true or a false statement? a true or a false statement? https://unlv.instructure.com/courses/102986/quizzes/367217/take 2/6 10/11/21, 10:12 PM Quiz: Section 7.1 Question 3 6 pts Given the following sets: U = {1, 2, 3, 4, 5, 6} A = {1, 2, 3} ; and knowing that B = {2, 3, 4} U ; C = {1, 5} is the Universal Set (i.e., the set of all elements under consideration), answer the following questions. Enter your answers in the boxes below as {a, b, c, d, e} with no space entered before or after each comma, and numbers or letters should be entered in proper ascending order as shown above. a) b) c) d) ¯ ¯¯¯ ¯¯¯ ¯¯¯¯ ¯ ¯ A ∪ C = ¯ ¯ ¯ ¯ (B ∩ A) ∪ C = ¯ ¯¯¯ ¯¯¯ ¯¯¯¯ ¯ ¯ C ∩ A = A ∩ B = For the following questions, enter true or false, without capitalizing the first letter. e) Is A ⊆ B a true or a false statement? f) Is B ⊆ U a true or a false statement? g) Is B ⊆ A a true or a false statement? Question 4 https://unlv.instructure.com/courses/102986/quizzes/367217/take 6 pts 3/6 10/11/21, 10:12 PM Quiz: Section 7.1 Given the following sets: U = {3, 5, 7, 8, 9, 10, 11, 12, 13, 14, 16} A = {3, 8, 9, 11, 14} and knowing that U ; B = {3, 8, 9, 10, 11, 14, 16} ; C = {3, 10} is the Universal Set (i.e., the set of all elements under consideration), answer the following questions. Enter your answer as {a, b, c, d, e} with no space entered before or after each comma, and where the letters represent appropriate set elements provided above. a) ¯ ¯¯¯ ¯¯¯ ¯¯¯¯ ¯ ¯ b) ¯ ¯ ¯ ¯ c) ¯ ¯¯ ¯¯¯ ¯¯¯ ¯¯ ¯ ¯ d) A ∪ C = C ∩ (B ∩ A) = B ∩ C = ¯ ¯ ¯ ¯ A ∩ B = For the following questions, enter true or false, without capitalizing the first letter. e) Is A ⊆ B a true or a false statement? f) Is B ⊆ A a true or a false statement? g) Is B ⊆ U a true or a false statement? h) Is C ⊆ A a true or a false statement? i) Is C ⊆ B a true or a false statement? Question 5 https://unlv.instructure.com/courses/102986/quizzes/367217/take 6 pts 4/6 10/11/21, 10:12 PM Quiz: Section 7.1 Given the following sets: U = {1, 2, 3, 4, 5, 6} A = {1, 2} ; and knowing that B = {2, 4, 5} U ; C = {1, 2, 5, 6} is the Universal Set (i.e., the set of all elements under consideration), answer the following questions. Enter your answers in the boxes below as {a, b, c, d, e} with no space entered before or after each comma, and numbers or letters should be entered in proper ascending order as shown above. a) b) A ∪ B = A ∩ B = c) A ∩ C = d) B ∩ C = e) B ∪ C = f) ¯ ¯ ¯ ¯ A = g) ¯ ¯ ¯ ¯ h) ¯ ¯ ¯ ¯ B = C = For the following questions, enter true or false, without capitalizing the first letter. i) Is j) Is A ⊆ C B ⊆ C a true or a false statement? a true or a false statement? https://unlv.instructure.com/courses/102986/quizzes/367217/take 5/6 10/11/21, 10:12 PM Quiz: Section 7.1 Question 6 6 pts Given the following sets: U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12} A = {1, 3, 5, 7} and knowing that and U B = {3, 4, 5, 6, 8, 10} is the Universal Set (i.e., the set of all elements under consideration), answer the following questions. Enter your answers in the boxes below as {a, b, c, d, e} with no space entered before or after each comma, and numbers or letters should be entered in proper ascending order as shown above. a) b) A ∪ B = A ∩ B = c) ¯ ¯ ¯ ¯ d) ¯ ¯ ¯ ¯ A = B = For the following questions, enter true or false, without capitalizing the first letter. e) Is A ⊆ B a true or a false statement? f) Is B ⊆ A a true or a false statement? Quiz saved at 10:12pm https://unlv.instructure.com/courses/102986/quizzes/367217/take Submit Quiz 6/6 10/11/21, 10:13 PM Quiz: Section 7.2 Section 7.2 Started: Oct 10 at 2:39pm Quiz Instructions Question 1 Given 3 pts 137 , n (E) = 88 , n (F ) = 78 , calculate and enter your answer in the box provided below. n (E ∪ F ) = n (E ∩ F ) =? Question 2 Given 3 pts 13 , n (A) = 58 , n (B) = 96 , calculate and enter your answer in the box provided below. n (A ∩ B) = n (A ∪ B) =? Question 3 3 pts After a survey of its employees, a car manufacturing company in Michigan discovers that 1,338 of its employees own American model vehicles, 545 own Japanese made vehicles, and 221 own both American and Japanese made vehicles. How many employees of this car company own at least one of these makes of vehicles? (Enter your answer in the box below). https://unlv.instructure.com/courses/102986/quizzes/367205/take 1/15 10/11/21, 10:13 PM Quiz: Section 7.2 Question 4 3 pts In a large residential neighborhood, 185 residents have desert landscaping to save precious water, 102 residents have water-intensive landscaping, and 20 had a mix of both desert type and water-intensive landscaping. How many residents in the neighborhood have at least one of these types of landscaping? (Enter your answer in the box below). Question 5 6 pts Consider the following Venn Diagram, depicting the data from a survey of customers at a popular downtown Las Vegas restaurant about their favorite food. a) How many customers selected only burger as their favorite food? https://unlv.instructure.com/courses/102986/quizzes/367205/take 2/15 10/11/21, 10:13 PM Quiz: Section 7.2 b) How many customers selected both burger and pizza, but not spaghetti as their favorite food? c) How many customers selected burger and pizza as their favorite food? d) How many customers did not select any of these three types of food as their favorite item on the menu? e) How many customers selected spaghetti and pizza, but not burger as their favorite item on the menu? f) How many customers selected only spaghetti as their favorite food? Question 6 6 pts Consider the following Venn Diagram, depicting the data from a survey of college students who were asked if they spoke another language than English, fluently. https://unlv.instructure.com/courses/102986/quizzes/367205/take 3/15 10/11/21, 10:13 PM Quiz: Section 7.2 a) How many students spoke both French and German fluently? b) How many students spoke only French fluently? c) How many students spoke Spanish fluently? d) How many students spoke both Spanish and German, but not French? e) How many students spoke both French and Spanish, but not German? f) How many students spoke only German? Question 7 6 pts Consider the following Venn Diagram, depicting the data from surveying random individuals passing by on the street at a neighborhood in Chicago about what second language (other than English) they could speak. https://unlv.instructure.com/courses/102986/quizzes/367205/take 4/15 10/11/21, 10:13 PM Quiz: Section 7.2 a) How many passersby could speak only Russian as a second language? b) How many passersby could speak all three languages as the second language? c) How many passersby could speak both Chinese and Spanish as the second language, but not Russian? d) How many passersby could speak Chinese as the second language? e) How many passersby could speak either Chinese or Russian as the second language, or both Chinese and Russian, but no Spanish at all? f) How many passersby could speak Spanish as the second language? Question 8 5 pts A group of 65 students were surveyed about whether or not they liked any or all of three kinds of fruits: apricots, bananas, and cantaloupes. It was found that: 34 liked apricots 30 liked bananas 33 liked cantaloupes 11 liked apricots and bananas 15 liked bananas and cantaloupes 17 liked apricots and cantaloupes 7 liked all the three fruits https://unlv.instructure.com/courses/102986/quizzes/367205/take 5/15 10/11/21, 10:13 PM Quiz: Section 7.2 Which of the following Venn diagrams is an accurate depiction of the above information? https://unlv.instructure.com/courses/102986/quizzes/367205/take 6/15 10/11/21, 10:13 PM https://unlv.instructure.com/courses/102986/quizzes/367205/take Quiz: Section 7.2 7/15 10/11/21, 10:13 PM https://unlv.instructure.com/courses/102986/quizzes/367205/take Quiz: Section 7.2 8/15 10/11/21, 10:13 PM Quiz: Section 7.2 Question 9 5 pts A pet store keeps track of the purchases over a four hour period. The store manager classifies purchases as containing a dog product, a cat product, a fish product, or product for a different kind of pet. She found: 83 101 purchased a dog product purchased a cat product 22 purchased a fish product 31 purchased a dog and a cat product 8 10 6 34 purchased a dog and a fish product purchased a cat and a fish product purchased a dog, a cat, and a fish product purchased a product for a pet other than a dog, cat, or fish Select the Venn Diagram below that best depicts the above information. https://unlv.instructure.com/courses/102986/quizzes/367205/take 9/15 10/11/21, 10:13 PM https://unlv.instructure.com/courses/102986/quizzes/367205/take Quiz: Section 7.2 10/15 10/11/21, 10:13 PM https://unlv.instructure.com/courses/102986/quizzes/367205/take Quiz: Section 7.2 11/15 10/11/21, 10:13 PM Quiz: Section 7.2 Question 10 A survey of 109 94 218 5 pts UNLV students during the fall semester revealed that: had Facebook accounts had Instagram accounts 86 had Twitter accounts 47 had both Facebook & Twitter accounts 25 had both Instagram & Twitter accounts 39 had both Facebook & Instagram accounts 23 17 had all three social media accounts did not have any of these social media accounts Which diagram below is an accurate Venn diagram for the above information? https://unlv.instructure.com/courses/102986/quizzes/367205/take 12/15 10/11/21, 10:13 PM https://unlv.instructure.com/courses/102986/quizzes/367205/take Quiz: Section 7.2 13/15 10/11/21, 10:13 PM Quiz: Section 7.2 Correct Venn diagram is not listed https://unlv.instructure.com/courses/102986/quizzes/367205/take 14/15 10/11/21, 10:13 PM Quiz: Section 7.2 Quiz saved at 10:13pm https://unlv.instructure.com/courses/102986/quizzes/367205/take Submit Quiz 15/15

Algebra Exam Practice-UNLV .

10/4/21, 1:16 PM Quiz: Section 5.2 Section 5.2 Started: Sep 30 at 2:12am Quiz Instructions Question 1 5 pts Consider the following intermediate tableau (not the Initial Simplex tableau): ⎡ P x1 x2 s1 s2 s3 RH S ⎤ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ 0 1 0 1 0 0 4 0 0 2 0 1 0 12 0 0 2 −3 0 1 6 ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ 1 0 −5 3 0 0 12 ⎣ ⎦ a) Determine the pivot column and the pivot element, and perform all the row operations for the entire pivot column to obtain the next new tableau. Once you have the new tableau, look at the numbers you have in the objective row and enter each one as requested in each box below. Note: Where applicable, fractions must be entered as 2/5, -1/3, and so on. Under column x1 in the objective row, you have: Under column x2 in the objective row, you have: Under column s1 in the objective row, you have: Under column s2 Under column s3 Under column RH S in the objective row, you have: in the objective row, you have: in the objective row, you have: https://unlv.instructure.com/courses/102986/quizzes/367220/take 1/9 10/4/21, 1:16 PM Quiz: Section 5.2 b) Given the new tableau that you obtained above, three interpretations are possible. In the box below, type or copy and paste whichever answer shown in boldface letters below that you think is the correct choice. 1. Enter solved if you think you have obtained the final tableau. 2. Enter ready for another set of pivot operations if you think more pivot operations are possible. 3. Enter no solution if you think the tableau has no solution. Question 2 5 pts Consider the following tableau: ⎡ P x1 x2 s1 s2 RH S ⎤ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ 0 8 8 1 0 160 0 4 12 0 1 180 ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎣ 1 −5 −10 0 0 0 ⎦ a) Determine the pivot column and the pivot element, and perform all the row operations for the entire pivot column to obtain the next new tableau. Once you have the new tableau, look at the numbers you have in the objective row and enter each one as requested in each box below. Note: Where applicable, fractions must be entered as 2/5, -1/3, and so on. Under column x1 in the objective row, you have: Under column x2 in the objective row, you have: Under column s1 in the objective row, you have: https://unlv.instructure.com/courses/102986/quizzes/367220/take 2/9 10/4/21, 1:16 PM Quiz: Section 5.2 Under column s2 in the objective row, you have: Under column RH S in the objective row, you have: b) Given the new tableau that you obtained above, three interpretations are possible. In the box below, type or copy and paste whichever answer shown in boldface letters below that you think is the correct choice. 1. Enter solved if you think you have obtained the final tableau. 2. Enter ready for another set of pivot operations if you think more pivot operations are possible. 3. Enter no solution if you think the tableau has no solution. Question 3 5 pts Consider the following intermediate tableau (not the Initial Simplex tableau): ⎡ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎣ P x1 x2 0 0 1 0 1 0 1 0 0 s1 1 2 s2 − RH S ⎤ 1 3 2 2 ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ 1 1 5 2 2 2 2 −1 7 ⎦ a) Determine the pivot column and the pivot element, and perform all the row operations for the entire pivot column to obtain the next new tableau. Once you have the new tableau, look at the numbers you have in the objective row and enter each one as requested in each box below. Note: Where applicable, fractions must be entered as 2/5, -1/3, and so on. Under column x1 in the objective row, you have: https://unlv.instructure.com/courses/102986/quizzes/367220/take 3/9 10/4/21, 1:16 PM Quiz: Section 5.2 Under column x2 in the objective row, you have: Under column s1 in the objective row, you have: Under column s2 Under column RH S in the objective row, you have: in the objective row, you have: b) Given the new tableau that you obtained above, three interpretations are possible. In the box below, type or copy and paste whichever answer shown in boldface letters below that you think is the correct choice. 1. Enter solved if you think you have obtained the final tableau. 2. Enter ready for another set of pivot operations if you think more pivot operations are possible. 3. Enter no solution if you think the tableau has no solution. Question 4 5 pts Consider the following tableau: ⎡ P x1 x2 s1 s2 RH S ⎤ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ 0 1 0 1 0 7 0 1 −1 0 1 8 ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎣ 1 −5 −4 0 0 0 ⎦ a) Determine the pivot column and the pivot element, and perform all the row operations for the entire pivot column to obtain the next new tableau. Once you have https://unlv.instructure.com/courses/102986/quizzes/367220/take 4/9 10/4/21, 1:16 PM Quiz: Section 5.2 the new tableau, look at the numbers you have in the objective row and enter each one as requested in each box below. Note: Where applicable, fractions must be entered as 2/5, -1/3, and so on. Under column x1 in the objective row, you have: Under column x2 in the objective row, you have: Under column s1 in the objective row, you have: Under column s2 Under column RH S in the objective row, you have: in the objective row, you have: b) Given the new tableau that you obtained above, three interpretations are possible. In the box below, type or copy and paste whichever answer shown in boldface letters below that you think is the correct choice. 1. Enter solved if you think you have obtained the final tableau. 2. Enter ready for another set of pivot operations if you think more pivot operations are possible. 3. Enter no solution if you think the tableau has no solution. Question 5 8 pts Use the simplex method to solve the following maximum problem: Maximize: P = 7x 1 + 5x 2 Subject to the constraints: https://unlv.instructure.com/courses/102986/quizzes/367220/take 5/9 10/4/21, 1:16 PM Quiz: Section 5.2 ⎧ 2x 1 + x 2 ≤ 100 ⎪ ⎪ 4x 1 + 3x 2 ≤ 240 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. x1 = x2 = P = Question 6 8 pts Use the simplex method to solve the following maximum problem: Maximize: P = 7x 1 + 12x 2 Subject to the constraints: ⎧ 2x 1 + 3x 2 ≤ 6 ⎪ ⎪ 3x 1 + 7x 2 ≤ 12 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. x1 = x2 = P = https://unlv.instructure.com/courses/102986/quizzes/367220/take 6/9 10/4/21, 1:16 PM Quiz: Section 5.2 Question 7 8 pts Use the simplex method to solve the following maximum problem: Maximize: P = 3x 1 + 2x 2 Subject to the constraints: ⎧ 2x 1 + x 2 ≤ 6 ⎪ ⎪ x 1 + 2x 2 ≤ 6 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. x1 = x2 = P = Question 8 8 pts Use the simplex method to solve the following maximum problem: Maximize: P = 6x 1 + 3x 2 + 2x 3 Subject to the constraints: https://unlv.instructure.com/courses/102986/quizzes/367220/take 7/9 10/4/21, 1:16 PM Quiz: Section 5.2 2x 1 + 2x 2 + 3x 3 ≤ 30 ⎧ ⎪ ⎪ ⎪ ⎪ 2x + 2x + x ≤ 12 ⎪ 1 2 3 ⎨x ≥ 0 1 ⎪ ⎪ ⎪ x2 ≥ 0 ⎪ ⎩ ⎪ x3 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. x1 = x2 = x3 = P = Question 9 8 pts Use the simplex method to solve the following maximum problem: Maximize: P = 2x 1 + 3x 2 Subject to the constraints: ⎧ x1 ⎪ ⎪ x1 ⎨ x1 ⎪ ⎩ ⎪ x2 + 2x 2 ≤ 30 + x 2 ≤ 20 ≥ 0 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. x1 = x2 = https://unlv.instructure.com/courses/102986/quizzes/367220/take 8/9 10/4/21, 1:16 PM Quiz: Section 5.2 P = Quiz saved at 1:16pm https://unlv.instructure.com/courses/102986/quizzes/367220/take Submit Quiz 9/9 10/4/21, 1:17 PM Quiz: Section 5.3 Section 5.3 Started: Sep 30 at 2:14am Quiz Instructions Question 1 5 pts Consider the following minimum problem: Minimize: C = 6x 1 + 3x 2 Subject to the constraints: ⎧ 4x 1 + x 2 ≥ 4 ⎪ ⎪ x2 ≥ 2 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 Write the dual problem for the above minimum problem by selecting the appropriate number for each blank box shown below (Do not solve the dual problem). P = [ Select ] y1 [ Select ] y1 ≤ [ Select ] y1 ≥ 0 y1 ; + + [ Select ] y2 [ Select ] [ Select ] y2 ≤ 3 y2 ≥ 0 Question 2 5 pts Consider the following minimum problem: Minimize: C = x 1 + 6x 2 https://unlv.instructure.com/courses/102986/quizzes/367207/take 1/9 10/4/21, 1:17 PM Quiz: Section 5.3 Subject to the constraints: ⎧ 2x 1 + 3x 2 ≥ 15 ⎪ ⎪ −x 1 + 2x 2 ≥ 3 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 Write the dual problem for the above minimum problem by selecting the appropriate number for each blank box shown below (Do not solve the dual problem). P = [ Select ] y1 [ Select ] [ Select ] y1 ≥ 0 ; + [ Select ] y1 + [ Select ] y1 + [ Select ] y2 y2 ≤ 1 y2 ≤ 6 y2 ≥ 0 Question 3 5 pts Consider the following minimum problem: Minimize: C = 2x 1 + x 2 Subject to the constraints: ⎧ 5x 1 + x 2 ≥ 9 ⎪ ⎪ 2x 1 + 2x 2 ≥ 10 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 Write the dual problem for the above minimum problem by selecting the appropriate number for each blank box shown below (Do not solve the dual problem). P = [ Select ] [ Select ] y1 y1 https://unlv.instructure.com/courses/102986/quizzes/367207/take + + [ Select ] [ Select ] y2 y2 ≤ 2 2/9 10/4/21, 1:17 PM Quiz: Section 5.3 [ Select ] y1 ≥ 0 y1 ; + [ Select ] y2 ≤ 1 y2 ≥ 0 Question 4 5 pts Consider the following minimum problem: Minimize: C = 14x 1 + 20x 2 Subject to the constraints: ⎧ x 1 + 2x 2 ≥ 4 ⎪ ⎪ 7x 1 + 6x 2 ≥ 20 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 Write the dual problem for the above minimum problem by selecting the appropriate number for each blank box shown below (Do not solve the dual problem). P = [ Select ] [ Select ] [ Select ] y1 ≥ 0 ; y1 + [ Select ] y1 + [ Select ] y1 + [ Select ] y2 y2 ≤ 14 y2 ≤ 20 y2 ≥ 0 Question 5 8 pts Use the simplex method and the Duality Principle to solve the following minimum problem: https://unlv.instructure.com/courses/102986/quizzes/367207/take 3/9 10/4/21, 1:17 PM Quiz: Section 5.3 Minimize: C = 14x 1 + 20x 2 + 24x 3 Subject to the constraints: ⎧ x 1 + x 2 + 2x 3 ≥ 7 ⎪ ⎪ ⎪ ⎪ x + 2x + x ≥ 4 ⎪ 1 2 3 ⎨x ≥ 0 1 ⎪ ⎪ ⎪ x2 ≥ 0 ⎪ ⎩ ⎪ x3 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. x1 = x2 = x3 = C = Question 6 8 pts Use the simplex method and the Duality Principle to solve the following minimum problem: Minimize: C = 9x 1 + 4x 2 + 10x 3 Subject to the constraints: 2x 1 + x 2 + 3x 3 ≥ 6 ⎧ ⎪ ⎪ ⎪ ⎪ 6x + x + x ≥ 9 ⎪ 1 2 3 ⎨ x1 ≥ 0 ⎪ ⎪ ⎪ x2 ≥ 0 ⎪ ⎩ ⎪ x3 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. https://unlv.instructure.com/courses/102986/quizzes/367207/take 4/9 10/4/21, 1:17 PM Quiz: Section 5.3 x1 = x2 = x3 = C = Question 7 8 pts Use the simplex method to solve the following minimum problem on your own paper. Then, using your final tableau, enter the answer in each relevant box provided below. M inimize : C = 3x 1 + 4x 2 Subject to the following constraints: 2x 1 + x 2 ≥ 2 2x 1 + x 2 ≥ 6 x1 ≥ 0 ; x2 ≥ 0 Minimum value of Value of x1 = Value of x2 = C = https://unlv.instructure.com/courses/102986/quizzes/367207/take 5/9 10/4/21, 1:17 PM Quiz: Section 5.3 Question 8 8 pts Use the simplex method and the Duality Principle to solve the following minimum problem: Minimize: C = 3x 1 + 3x 2 Subject to the constraints: ⎧ 2x 1 + x 2 ≥ 4 ⎪ ⎪ x 1 + 2x 2 ≥ 4 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. x1 = x2 = C = Question 9 8 pts Use the simplex method and the Duality Principle to solve the following minimum problem: Minimize: C = 2x 1 + 2x 2 Subject to the constraints: ⎧ x 1 + 2x 2 ≥ 3 ⎪ ⎪ 3x 1 + 2x 2 ≥ 5 ⎨ x1 ≥ 0 ⎪ ⎩ ⎪ x2 ≥ 0 https://unlv.instructure.com/courses/102986/quizzes/367207/take 6/9 10/4/21, 1:17 PM Quiz: Section 5.3 and using your final tableau answer the questions below by entering the correct answer in each blank box. Please enter fractions as 3/5, -4/7, and so on. x1 = x2 = C = Question 10 5 pts The following intermediate tableau for a dual maximum problem was obtained using the simplex method for optimizing a minimum problem. ⎡ P y1 y2 s1 ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ 0 0 2 1 0 1 1 0 ⎣ 1 0 −2 0 s2 − RH S ⎤ 1 1 ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ 3 ⎦ 1 2 1 2 3 2 Find the pivot element(s) in the above tableau, and perform all the necessary pivot operations to obtain the final tableau. Then, using the final tableau, answer the following questions: The minimum function value is: The value of x1 in the minimum problem is : The value of x2 in the minimum problem is: https://unlv.instructure.com/courses/102986/quizzes/367207/take 7/9 10/4/21, 1:17 PM Quiz: Section 5.3 Question 11 5 pts The following intermediate tableau for a dual maximum problem was obtained using the simplex method for optimizing a minimum problem. ⎡ P y1 y2 s1 s2 RH S ⎤ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ 0 1 −1 1 0 1 0 0 1 ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ 1 0 −5 ⎣ − 1 1 3 3 3 0 1 3 ⎦ Find the pivot element(s) in the above tableau, and perform all the necessary pivot operations to obtain the final tableau. Then, using the final tableau, answer the following questions: Note: Where applicable, enter fractions in simplified form as 3/5 , 1/2, and so on. The minimum function value is: The value of x1 in the minimum problem is : The value of x2 in the minimum problem is: Question 12 5 pts The following intermediate tableau for a dual maximum problem was obtained using the simplex method for optimizing a minimum problem. ⎡ P y1 y2 s1 s2 RH S ⎤ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ 0 −2 1 1 0 2 0 9 0 −3 1 0 ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎣ 1 −18 0 9 0 18 ⎦ https://unlv.instructure.com/courses/102986/quizzes/367207/take 8/9 10/4/21, 1:17 PM Quiz: Section 5.3 Find the pivot element(s) in the above tableau, and perform all the necessary pivot operations to obtain the final tableau. Then, using the final tableau, answer the following questions: The minimum function value is: The value of x1 in the minimum problem is : The value of x2 in the minimum problem is: Not saved https://unlv.instructure.com/courses/102986/quizzes/367207/take Submit Quiz 9/9

MAT 205-Statistics Questions- Wilmington University .

1. The chart below shows some pollution indexes for some of the world’s countries. Answer the questions Show your calculations. (See page 432) 2020 World Air Quality Report a. Which country was in the 70- percentile position? b. What was the percentile for Belgium? Country New Caledonia Estonia Australia Belgium Denmark Spain Latvia Philippines Hungary Hong Kong SAR Albania Peru Mexico Kosovo Croatia Laos Montenegro United Arab Emirates Kuwait Bosnia Herzegovina Afghanistan PM2.5 3.7 5.9 7.6 8.9 9.4 10.4 11.3 12.8 14.3 15.4 16.0 17.9 18.9 20.0 21.2 22.4 26.1 29.2 34.0 40.6 46.5 C.How many countries were the best 20% for air quality (smallest PM2.5)? d. of the countries in the list, name the countries that are in the 10% which pollute the least. https://www.iqair.com/us/world-most- polluted-countries 2. For the data from question 1, find the quartiles, the interquartile range, and draw a box plot. (See pages 437-439) Be sure to have a even scale for your box plot. Minimum Interquartile Range Low Quartile Q1 Median Q2 Upper quartile Q3 Maximum 3. Use the Empirical Rule (page 454) to answer the following questions. A standardized test of intelligence is scaled so that the mean IQ is 100, and the standard deviation is 15. a. What percent of people have an IQ between 85 and 115? b. What percent of people have an IQ greater than 115? c. What percent of people have an IQ less than 130? d. What percent of people have an IQ less than 70? 4. Use Z-scores to solve the following question. In math class, Samantha scored 10 on a quiz for which the class mean was 7.6 and the class standard deviation was 2.1. Marie scored 8.5 on a quiz for which the class mean was 5.9 and the class standard deviation was 2.1. Relatively speaking, who had the better score? What was each of their z-scores? (See page 458) 5. Using technology or the table on page 471, find the following probabilities. Tell what method you used. a. Between -1.10 and 0.47 b. To the left of 1.05 C. To the right of 2.38 Extra credit A fruit-packing company produced peaches last summer whose weights were normally distributed with a mean 14 ounces and standard deviation 0.6 ounces. Among a sample of 1000 of those peaches, about how many could be expected to have weights as follows? a. At least 14 ounces b. Between 14 and 15.2 ounces C. Less than 13.4 ounces d. More than 12 ounces