EBK FINITE MATHEMATICS
7th Edition
ISBN: 8220103611954
Author: Costenoble
Publisher: Cengage Learning US
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Textbook Question
Chapter 5.2, Problem 32E
Energy Efficiency (Compare with Exercise 31). You are thinking of making your mansion more energy efficient by replacing some of the light bulbs with compact fluorescent bulbs and insulating part or all of your exterior walls. Each compact fluorescent light bulb costs $4 and saves you an average of $2 per year in energy costs, and each square root of wall insulation costs $1 and saves you an average of $0.20 per year in energy costs.14 Your mansion has 200 light fittings and 3,000 square feet of uniosulated exterior wall. To impress your friends, you would like to spend as much as possible but save no more than $800 per year in energy costs. (You are proud of your large utility bills.) How many compact fluorescent light bulbs and how many square feet of insulation should you purchase? How much will you save in energy costs per year?
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of 2
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The set of all 3 x 3 upper triangular matrices
6) Determine whether each of the following sets, together with the standard
operations, is a vector space. If it is, then simply write 'Vector space'. You do not
have to prove all ten vector space axioms. If it is not, then identify one of the ten
vector space axioms with its number in the attached sheet that fails and also show
that how it fails.
a) The set of all polynomials of degree four or less.
b) The set of all 2 x 2 singular matrices.
c) The set {(x, y) : x ≥ 0, y is a real number}.
d) C[0,1], the set of all continuous functions defined on the interval [0,1].
7) Given u = (-2,1,1) and v = (4,2,0) are two vectors in R³-space. Find u xv and
show that it is orthogonal to both u and v.
8) a) Find the equation of the least squares regression line for the data points
below.
(-2,0), (0,2), (2,2)
b) Graph the points and the line that you found from a) on the same Cartesian
coordinate plane.
1. A consumer group claims that the mean annual consumption of cheddar cheese by a person in
the United States is at most 10.3 pounds. A random sample of 100 people in the United States has
a mean annual cheddar cheese consumption of 9.9 pounds. Assume the population standard
deviation is 2.1 pounds. At a = 0.05, can you reject the claim? (Adapted from U.S. Department of
Agriculture)
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
2. The CEO of a manufacturing facility claims that the mean workday of the company's assembly
line employees is less than 8.5 hours. A random sample of 25 of the company's assembly line
employees has a mean workday of 8.2 hours. Assume the population standard deviation is 0.5
hour and the population is normally distributed. At a = 0.01, test the CEO's claim.
State the hypotheses:
Calculate the test statistic:
Calculate the P-value:
Conclusion (reject or fail to reject Ho):
Statistics
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1) a) Find a matrix P such that PT AP orthogonally diagonalizes the following matrix
A.
= [{² 1]
A =
b) Verify that PT AP gives the correct diagonal form.
2
01
-2
3
2) Given the following matrices A =
-1
0
1] an
and B =
0
1
-3
2
find the following matrices:
a) (AB) b) (BA)T
3) Find the inverse of the following matrix A using Gauss-Jordan elimination or
adjoint of the matrix and check the correctness of your answer (Hint: AA¯¹ = I).
[1 1 1
A = 3 5 4
L3 6 5
4) Solve the following system of linear equations using any one of Cramer's Rule,
Gaussian Elimination, Gauss-Jordan Elimination or Inverse Matrix methods and
check the correctness of your answer.
4x-y-z=1
2x + 2y + 3z = 10
5x-2y-2z = -1
5) a) Describe the zero vector and the additive inverse of a vector in the vector
space, M3,3.
b) Determine if the following set S is a subspace of M3,3 with the standard
operations. Show all appropriate supporting work.
Chapter 5 Solutions
EBK FINITE MATHEMATICS
Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - Prob. 6ECh. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - Prob. 9ECh. 5.1 - In Exercises 1-26, sketch the region that...
Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - Prob. 14ECh. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - Prob. 21ECh. 5.1 - Prob. 22ECh. 5.1 - Prob. 23ECh. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - In Exercises 1-26, sketch the region that...Ch. 5.1 - Prob. 27ECh. 5.1 - In Exercises 27-32, we suggest that you use...Ch. 5.1 - Prob. 29ECh. 5.1 - In Exercises 27-32, we suggest that you use...Ch. 5.1 - Prob. 31ECh. 5.1 - In Exercises 27-32, we suggest that you use...Ch. 5.1 - Resource Allocation You manage an ice cream...Ch. 5.1 - Resource Allocation Podunk Institute of Technologs...Ch. 5.1 - Nutrition, Ruff, Inc. makes dog food out of...Ch. 5.1 - Purchasing Enormous State Universitys Business...Ch. 5.1 - Nutrition Gerber Products Gerber Mixed Cereal for...Ch. 5.1 - Prob. 38ECh. 5.1 - Municipal Bond Funds The Pioneer Investment...Ch. 5.1 - Mutual Funds In 2015, the Phoenix/Zweig Advisors...Ch. 5.1 - Investments: Financial Stocks (Compare Exercise 51...Ch. 5.1 - Revenue The following spreadsheet gives annual...Ch. 5.1 - Prob. 43ECh. 5.1 - Prob. 44ECh. 5.1 - Prob. 45ECh. 5.1 - Prob. 46ECh. 5.1 - Prob. 47ECh. 5.1 - Prob. 48ECh. 5.1 - Prob. 49ECh. 5.1 - Prob. 50ECh. 5.1 - In Exercises 51-54, you are mixing x grams of...Ch. 5.1 - In Exercises 51-54, you are mixing x grams of...Ch. 5.1 - In Exercises 51-54, you are mixing x grams of...Ch. 5.1 - Prob. 54ECh. 5.1 - Prob. 55ECh. 5.1 - Prob. 56ECh. 5.1 - Prob. 57ECh. 5.1 - Prob. 58ECh. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Prob. 6ECh. 5.2 - Prob. 7ECh. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Prob. 11ECh. 5.2 - Prob. 12ECh. 5.2 - Prob. 13ECh. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Prob. 17ECh. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Exercises 1-24, solve the given LP problem. If no...Ch. 5.2 - Prob. 21ECh. 5.2 - Prob. 22ECh. 5.2 - Prob. 23ECh. 5.2 - Prob. 24ECh. 5.2 - Resource Allocation You manage an ice cream...Ch. 5.2 - Resource Allocation Podunk Institute of...Ch. 5.2 - Nutrition Ruff, Inc. makes dog food out of chicken...Ch. 5.2 - Purchasing Enormous State Universitys Business...Ch. 5.2 - Nutrition Gerber Products Gerber Mixed Cereal for...Ch. 5.2 - Nutrition Gerber Products Gerber Mixed Cereal for...Ch. 5.2 - Energy Efficiency You are thinking of making your...Ch. 5.2 - Energy Efficiency (Compare with Exercise 31). You...Ch. 5.2 - Prob. 33ECh. 5.2 - Bodybuilding Supplements Exercises 33-36 are based...Ch. 5.2 - Bodybuilding Supplements Exercises 33-36 are based...Ch. 5.2 - Bodybuilding Supplements Exercises 33-36 are based...Ch. 5.2 - Resource Allocation Your salami manufacturing...Ch. 5.2 - Project Design The Megabuck Hospital Corporation...Ch. 5.2 - Prob. 39ECh. 5.2 - Television Advertising On Monday evenings in April...Ch. 5.2 - Prob. 41ECh. 5.2 - Prob. 42ECh. 5.2 - Investments: Financial Stocks (Compare Exercise 41...Ch. 5.2 - Investments: High-Dividend Stocks (Compare...Ch. 5.2 - Planning My friends: I, the mighty Brutus, have...Ch. 5.2 - Prob. 46ECh. 5.2 - Prob. 47ECh. 5.2 - Management21 You are the service manager for a...Ch. 5.2 - If a linear programming problem has a bounded,...Ch. 5.2 - If a linear programming problem has an unbounded,...Ch. 5.2 - Prob. 53ECh. 5.2 - Prob. 54ECh. 5.2 - Prob. 55ECh. 5.2 - Prob. 56ECh. 5.2 - Prob. 57ECh. 5.2 - Prob. 58ECh. 5.2 - Prob. 59ECh. 5.2 - Prob. 60ECh. 5.2 - Prob. 61ECh. 5.2 - Prob. 62ECh. 5.2 - You are setting up an LP problem for Fly-by-Night...Ch. 5.2 - Prob. 64ECh. 5.2 - Prob. 65ECh. 5.2 - Prob. 66ECh. 5.3 - Maximize p=2x+y Subject to x+2y6 x+y4 x+y4 x0,y0....Ch. 5.3 - Maximize p=x Subject to xy4 x+3y4 x0,y0. [HINT:...Ch. 5.3 - Maximize p=xy Subject to 5x5y20 2x10y40 x0,y0.Ch. 5.3 - Maximize p=2x+3y Subject to 3x+8y24 6x+4y30 x0,y0.Ch. 5.3 - Maximize p=5x4y+3z Subject to 5x+5z100 5y5z50...Ch. 5.3 - Maximize p=6x+y+3z Subject to 3x+y15 2x+2y+2z20...Ch. 5.3 - Prob. 7ECh. 5.3 - Maximize p=3x+4y+2z Subject to 3x+y+z5 x+2y+z5...Ch. 5.3 - Prob. 9ECh. 5.3 - Maximize z=3x1+4x2+6x3 Subject to 5x1x2+x31,500...Ch. 5.3 - Prob. 11ECh. 5.3 - Prob. 12ECh. 5.3 - Prob. 13ECh. 5.3 - Maximize p=x+2y+z+2w+v Subject to x+y1 y+z2 z+w3...Ch. 5.3 - In Exercises 15-20 we suggest the use of...Ch. 5.3 - In Exercises 15-20 we suggest the use of...Ch. 5.3 - Prob. 17ECh. 5.3 - In Exercises 15-20 we suggest the use of...Ch. 5.3 - Prob. 19ECh. 5.3 - In Exercises 15-20 we suggest the use of...Ch. 5.3 - Purchasing You are in charge of purchases at the...Ch. 5.3 - Prob. 22ECh. 5.3 - Resource Allocation Arctic Juice Company makes...Ch. 5.3 - Purchasing Trans Global Tractor Trailers has...Ch. 5.3 - Resource Allocation The Enormous State University...Ch. 5.3 - Prob. 26ECh. 5.3 - Agriculture Your small farm encompasses 100 acres,...Ch. 5.3 - Agriculture Your farm encompasses 500 acre, and...Ch. 5.3 - Prob. 29ECh. 5.3 - Resource Allocation Repeat Exercise 29, but this...Ch. 5.3 - Prob. 31ECh. 5.3 - Prob. 32ECh. 5.3 - Recycling Safety-Kleen operates the worlds largest...Ch. 5.3 - Recycling Repeat Exercise 33, but this time assume...Ch. 5.3 - Bodybuilding Supplements Exercises 35 and 36 are...Ch. 5.3 - Prob. 36ECh. 5.3 - Investing Exercises 37 and 38 are based on the...Ch. 5.3 - Prob. 38ECh. 5.3 - Prob. 39ECh. 5.3 - Investments You have $100,000 that you are...Ch. 5.3 - Prob. 41ECh. 5.3 - Prob. 42ECh. 5.3 - Prob. 43ECh. 5.3 - Prob. 44ECh. 5.3 - Transportation Scheduling Your publishing company...Ch. 5.3 - Prob. 46ECh. 5.3 - Prob. 47ECh. 5.3 - Prob. 48ECh. 5.3 - Prob. 49ECh. 5.3 - Are there any types of linear programming problems...Ch. 5.3 - Prob. 51ECh. 5.3 - Prob. 52ECh. 5.3 - What is a basic solution? How might one find a...Ch. 5.3 - Prob. 54ECh. 5.3 - Prob. 55ECh. 5.3 - Prob. 56ECh. 5.4 - Maximize p=x+y subject to x+2y6 x+y4 2x+y8 x0,y0...Ch. 5.4 - Maximize p=3x+2y subject to x+3y6 x+y4 2x+y8 x0,y0...Ch. 5.4 - Prob. 3ECh. 5.4 - Maximize p=x+2y subject to x+y25 y10 2xy0 x0,y0.Ch. 5.4 - Maximize p=2x+5y+3z subject to x+y+z150 x+y+z100...Ch. 5.4 - Maximize p=3x+2y+2z subject to x+y+2z38 2x+y+z24...Ch. 5.4 - Maximize p=10x+20y+15z subject to x+2y+z40 2yz10...Ch. 5.4 - Maximize p=10x+10y+15z subject to xy+z12 2x2y+z15...Ch. 5.4 - Prob. 9ECh. 5.4 - Maximize p=x+y+4z+2w subject to x+y+z+w50 2x+yzw10...Ch. 5.4 - Minimize c=6x+6y subject to x+2y20 2x+y20 x0,y0.Ch. 5.4 - Minimize c=3x+2y subject to x+2y20 2x+y10 x0,y0Ch. 5.4 - Prob. 13ECh. 5.4 - Minimize c=2x+2y+3z subject to x+z100 2x+y50 y+z50...Ch. 5.4 - Minimize c=50x+50y+11z subject to 2x+z3 2x+yz2...Ch. 5.4 - Prob. 16ECh. 5.4 - Prob. 17ECh. 5.4 - Prob. 18ECh. 5.4 - Prob. 19ECh. 5.4 - In Exercises 19-24, we suggest the use of...Ch. 5.4 - Prob. 21ECh. 5.4 - In Exercises 19-24, we suggest the use of...Ch. 5.4 - In Exercises 19-24, we suggest the use of...Ch. 5.4 - Prob. 24ECh. 5.4 - Agriculture (Compare Exercise 27 in Section 6.3.)...Ch. 5.4 - Agriculture (Compare Exercise 28 in Section 6.3.)...Ch. 5.4 - Politics The political pollster Canter preparing...Ch. 5.4 - Prob. 28ECh. 5.4 - Resource Allocation Succulent Citrus produce...Ch. 5.4 - Resource Allocation Fancy Pineapple produces...Ch. 5.4 - Latin Music Sales (Digital) You are about to go...Ch. 5.4 - Prob. 32ECh. 5.4 - Prob. 33ECh. 5.4 - Prob. 34ECh. 5.4 - Gaming Exercises 33-36 are based on the following...Ch. 5.4 - Prob. 36ECh. 5.4 - Prob. 37ECh. 5.4 - Prob. 38ECh. 5.4 - Prob. 39ECh. 5.4 - Purchasing Federal Rent-a-Car is pulling together...Ch. 5.4 - Prob. 41ECh. 5.4 - Prob. 42ECh. 5.4 - Prob. 43ECh. 5.4 - Prob. 44ECh. 5.4 - Transportation Scheduling We return 10 your...Ch. 5.4 - Prob. 46ECh. 5.4 - Finance Senator Porkbarrel habitually overdraws...Ch. 5.4 - Prob. 48ECh. 5.4 - Transportation Scheduling Your publishing company...Ch. 5.4 - Transportation Scheduling Repeat Exercise 49, but...Ch. 5.4 - Prob. 51ECh. 5.4 - Prob. 52ECh. 5.4 - Prob. 53ECh. 5.4 - Prob. 54ECh. 5.4 - Prob. 55ECh. 5.4 - Prob. 56ECh. 5.4 - Prob. 57ECh. 5.4 - Prob. 58ECh. 5.4 - Prob. 59ECh. 5.4 - Prob. 60ECh. 5.4 - Prob. 61ECh. 5.4 - Prob. 62ECh. 5.5 - In Exercises 1-8, write down (without solving) the...Ch. 5.5 - In Exercises 1-8, write down (without solving) the...Ch. 5.5 - In Exercises 1-8, write down (without solving) the...Ch. 5.5 - Prob. 4ECh. 5.5 - In Exercises 1-8, write down (without solving) the...Ch. 5.5 - Prob. 6ECh. 5.5 - In Exercises 1-8, write down (without solving) the...Ch. 5.5 - Prob. 8ECh. 5.5 - In Exercises 9-22, solve the given standard...Ch. 5.5 - In Exercises 9-22, solve the given standard...Ch. 5.5 - Prob. 11ECh. 5.5 - In Exercises 9-22, solve the given standard...Ch. 5.5 - Prob. 13ECh. 5.5 - In Exercises 9-22, solve the given standard...Ch. 5.5 - In Exercises 9-22, solve the given standard...Ch. 5.5 - Prob. 16ECh. 5.5 - Prob. 17ECh. 5.5 - Prob. 18ECh. 5.5 - Prob. 19ECh. 5.5 - In Exercises 9-22, solve the given standard...Ch. 5.5 - Prob. 21ECh. 5.5 - Prob. 22ECh. 5.5 - Prob. 23ECh. 5.5 - In Exercises 23-28, solve the game with the given...Ch. 5.5 - In Exercises 23-28, solve the game with the given...Ch. 5.5 - Prob. 26ECh. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Prob. 31ECh. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Prob. 33ECh. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Prob. 38ECh. 5.5 - Prob. 39ECh. 5.5 - Many of Exercises 29-40 are similar or identical...Ch. 5.5 - Prob. 41ECh. 5.5 - Game Theory: Marketing Your companys new portable...Ch. 5.5 - Game Theory: Morra Games A three-finger Morra game...Ch. 5.5 - Prob. 47ECh. 5.5 - Prob. 48ECh. 5.5 - Prob. 49ECh. 5.5 - Prob. 50ECh. 5.5 - Prob. 51ECh. 5.5 - Prob. 52ECh. 5.5 - Prob. 53ECh. 5.5 - Prob. 54ECh. 5.5 - Prob. 55ECh. 5 - In Exercises 1-4, sketch the region corresponding...Ch. 5 - Prob. 2RECh. 5 - Prob. 3RECh. 5 - Prob. 4RECh. 5 - In Exercises 5-8, solve the given linear...Ch. 5 - In Exercises 5-8, solve the given linear...Ch. 5 - Prob. 7RECh. 5 - Prob. 8RECh. 5 - Prob. 9RECh. 5 - Prob. 10RECh. 5 - Prob. 11RECh. 5 - Prob. 12RECh. 5 - In Exercises 9-18, solve the given linear...Ch. 5 - Prob. 14RECh. 5 - Prob. 15RECh. 5 - Prob. 16RECh. 5 - In Exercises 9-18, solve the given linear...Ch. 5 - Prob. 18RECh. 5 - Prob. 19RECh. 5 - Prob. 20RECh. 5 - Prob. 21RECh. 5 - Prob. 22RECh. 5 - Prob. 23RECh. 5 - Prob. 24RECh. 5 - Prob. 25RECh. 5 - Prob. 26RECh. 5 - Prob. 27RECh. 5 - Prob. 28RECh. 5 - Prob. 29RECh. 5 - Prob. 30RECh. 5 - In Exercises 31-34, you are the buyer for...Ch. 5 - In Exercises 31-34, you are the buyer for...Ch. 5 - In Exercises 31-34, you are the buyer for...Ch. 5 - Prob. 34RECh. 5 - Investments Marjory Duffins portfolio manager has...Ch. 5 - Prob. 36RECh. 5 - Prob. 37RECh. 5 - Profit Duffin House, which is now the largest...Ch. 5 - Prob. 39RECh. 5 - Purchases You are about to place book orders from...Ch. 5 - Degree Requirements During his lunch break, John...Ch. 5 - Prob. 42RECh. 5 - Shipping On the same day that the sales department...Ch. 5 - Prob. 44RECh. 5 - Prob. 45RECh. 5 - Prob. 46RE
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