Math in Our World
3rd Edition
ISBN: 9780073519678
Author: David Sobecki Professor, Allan G. Bluman
Publisher: McGraw-Hill Education
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Chapter 9.2, Problem 6TTO
To determine
To find: The amount required to carpet the Jane’s basement.
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of 2
- ZOOM +
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
of 2
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ZOOM +
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 9 Solutions
Math in Our World
Ch. 9.1 - Convert 81 feet to yards.Ch. 9.1 - The maximum cruising height of a Boeing 737 is...Ch. 9.1 - A football field is 100 yards long. How many...Ch. 9.1 - The speed of sound at sea level and room...Ch. 9.1 - Prob. 5TTOCh. 9.1 - Prob. 6TTOCh. 9.1 - Prob. 7TTOCh. 9.1 - Prob. 8TTOCh. 9.1 - Prob. 1ECh. 9.1 - Prob. 2E
Ch. 9.1 - Prob. 3ECh. 9.1 - Prob. 4ECh. 9.1 - Prob. 5ECh. 9.1 - Describe a good rule of thumb for relating inches...Ch. 9.1 - Prob. 7ECh. 9.1 - Prob. 8ECh. 9.1 - For Exercises 718, convert each using dimensional...Ch. 9.1 - Prob. 10ECh. 9.1 - Prob. 11ECh. 9.1 - Prob. 12ECh. 9.1 - Prob. 13ECh. 9.1 - Prob. 14ECh. 9.1 - Prob. 15ECh. 9.1 - Prob. 16ECh. 9.1 - Prob. 17ECh. 9.1 - Prob. 18ECh. 9.1 - Prob. 19ECh. 9.1 - Prob. 20ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 22ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 24ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 27ECh. 9.1 - Prob. 28ECh. 9.1 - Prob. 29ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 32ECh. 9.1 - Prob. 33ECh. 9.1 - Prob. 34ECh. 9.1 - Prob. 35ECh. 9.1 - Prob. 36ECh. 9.1 - Prob. 37ECh. 9.1 - Prob. 38ECh. 9.1 - Prob. 39ECh. 9.1 - Prob. 40ECh. 9.1 - Prob. 41ECh. 9.1 - Prob. 42ECh. 9.1 - Prob. 43ECh. 9.1 - Prob. 44ECh. 9.1 - Prob. 45ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 47ECh. 9.1 - Prob. 48ECh. 9.1 - For Exercises 1958, convert each measurement to...Ch. 9.1 - Prob. 50ECh. 9.1 - Prob. 51ECh. 9.1 - Prob. 52ECh. 9.1 - Prob. 53ECh. 9.1 - Prob. 54ECh. 9.1 - Prob. 55ECh. 9.1 - Prob. 56ECh. 9.1 - Prob. 57ECh. 9.1 - Prob. 58ECh. 9.1 - Prob. 59ECh. 9.1 - A professional basketball court is 94 feet long....Ch. 9.1 - Prob. 61ECh. 9.1 - Prob. 62ECh. 9.1 - Prob. 63ECh. 9.1 - Prob. 64ECh. 9.1 - Prob. 65ECh. 9.1 - What are the dimensions of a 6 dm by 5 dm piece of...Ch. 9.1 - Prob. 67ECh. 9.1 - If a millipede has 1,000 legs, how many legs would...Ch. 9.1 - Prob. 69ECh. 9.1 - Prob. 70ECh. 9.1 - Prob. 71ECh. 9.1 - Prob. 72ECh. 9.1 - Prob. 73ECh. 9.1 - Prob. 74ECh. 9.1 - Prob. 75ECh. 9.1 - Prob. 76ECh. 9.1 - Prob. 77ECh. 9.1 - Prob. 78ECh. 9.1 - A college is building a new basketball court that...Ch. 9.1 - If three servings of ice cream have 20 grams of...Ch. 9.1 - Prob. 81ECh. 9.1 - The campus fitness center is installing an...Ch. 9.1 - Prob. 83ECh. 9.1 - Prob. 84ECh. 9.1 - Prob. 85ECh. 9.1 - Prob. 86ECh. 9.1 - Prob. 87ECh. 9.1 - Prob. 88ECh. 9.1 - Prob. 89ECh. 9.1 - Prob. 90ECh. 9.1 - Prob. 91ECh. 9.1 - Prob. 92ECh. 9.1 - Prob. 93ECh. 9.1 - Prob. 94ECh. 9.1 - Prob. 95ECh. 9.1 - In Problems 95104, decide what units in both the...Ch. 9.1 - Prob. 97ECh. 9.1 - Prob. 98ECh. 9.1 - In Problems 95104, decide what units in both the...Ch. 9.1 - In Problems 95104, decide what units in both the...Ch. 9.1 - Prob. 101ECh. 9.1 - Prob. 102ECh. 9.1 - Prob. 103ECh. 9.1 - Prob. 104ECh. 9.1 - Prob. 105ECh. 9.1 - What units would 7,000 cm have to be converted to...Ch. 9.1 - Prob. 107ECh. 9.2 - A 32-in. wide-screen TV has screen area 3.05 ft2....Ch. 9.2 - Prob. 2TTOCh. 9.2 - Prob. 3TTOCh. 9.2 - Fussy University prohibits any displays on...Ch. 9.2 - Prob. 5TTOCh. 9.2 - Prob. 6TTOCh. 9.2 - How many cubic feet of water are in a 100-gallon...Ch. 9.2 - Prob. 8TTOCh. 9.2 - Prob. 9TTOCh. 9.2 - Prob. 10TTOCh. 9.2 - Prob. 11TTOCh. 9.2 - Prob. 1ECh. 9.2 - Prob. 2ECh. 9.2 - Prob. 3ECh. 9.2 - Prob. 4ECh. 9.2 - Prob. 5ECh. 9.2 - Prob. 6ECh. 9.2 - Prob. 7ECh. 9.2 - For Exercises 768, convert each measurement to the...Ch. 9.2 - For Exercises 768, convert each measurement to the...Ch. 9.2 - Prob. 10ECh. 9.2 - Prob. 11ECh. 9.2 - Prob. 12ECh. 9.2 - Prob. 13ECh. 9.2 - Prob. 14ECh. 9.2 - Prob. 15ECh. 9.2 - Prob. 16ECh. 9.2 - Prob. 17ECh. 9.2 - Prob. 18ECh. 9.2 - Prob. 19ECh. 9.2 - Prob. 20ECh. 9.2 - Prob. 21ECh. 9.2 - Prob. 22ECh. 9.2 - Prob. 23ECh. 9.2 - Prob. 24ECh. 9.2 - Prob. 25ECh. 9.2 - Prob. 26ECh. 9.2 - Prob. 27ECh. 9.2 - Prob. 28ECh. 9.2 - Prob. 29ECh. 9.2 - Prob. 30ECh. 9.2 - Prob. 31ECh. 9.2 - Prob. 32ECh. 9.2 - Prob. 33ECh. 9.2 - Prob. 34ECh. 9.2 - Prob. 35ECh. 9.2 - Prob. 36ECh. 9.2 - Prob. 37ECh. 9.2 - Prob. 38ECh. 9.2 - Prob. 39ECh. 9.2 - Prob. 40ECh. 9.2 - Prob. 41ECh. 9.2 - Prob. 42ECh. 9.2 - Prob. 43ECh. 9.2 - For Exercises 768, convert each measurement to the...Ch. 9.2 - Prob. 45ECh. 9.2 - Prob. 46ECh. 9.2 - Prob. 47ECh. 9.2 - Prob. 48ECh. 9.2 - Prob. 49ECh. 9.2 - Prob. 50ECh. 9.2 - Prob. 51ECh. 9.2 - Prob. 52ECh. 9.2 - Prob. 53ECh. 9.2 - Prob. 54ECh. 9.2 - Prob. 55ECh. 9.2 - Prob. 56ECh. 9.2 - Prob. 57ECh. 9.2 - Prob. 58ECh. 9.2 - Prob. 59ECh. 9.2 - Prob. 60ECh. 9.2 - Prob. 61ECh. 9.2 - Prob. 62ECh. 9.2 - Prob. 63ECh. 9.2 - Prob. 64ECh. 9.2 - Prob. 65ECh. 9.2 - Prob. 66ECh. 9.2 - Prob. 67ECh. 9.2 - Prob. 68ECh. 9.2 - Prob. 69ECh. 9.2 - Jose has a 15-m2 garden and plans to buy some...Ch. 9.2 - Dan wants to pour a concrete patio in his...Ch. 9.2 - Chloe drank two 20-oz bottles of Diet Pepsi while...Ch. 9.2 - Prob. 73ECh. 9.2 - Prob. 74ECh. 9.2 - Prob. 75ECh. 9.2 - Prob. 76ECh. 9.2 - Prob. 77ECh. 9.2 - Prob. 78ECh. 9.2 - Five cubic feet of seawater have flooded into a...Ch. 9.2 - Prob. 80ECh. 9.2 - Prob. 81ECh. 9.2 - Prob. 82ECh. 9.2 - A search party covered 6 square miles of territory...Ch. 9.2 - A Jacuzzi was filled with 200 gallons of water....Ch. 9.2 - Prob. 85ECh. 9.2 - Prob. 86ECh. 9.2 - Prob. 87ECh. 9.2 - In Problems 8590, which unit would be most...Ch. 9.2 - Prob. 89ECh. 9.2 - Prob. 90ECh. 9.2 - Prob. 91ECh. 9.2 - Prob. 92ECh. 9.2 - Prob. 93ECh. 9.2 - Prob. 94ECh. 9.2 - Prob. 95ECh. 9.2 - Prob. 96ECh. 9.2 - Without doing any calculating, which sounds like...Ch. 9.2 - Prob. 100ECh. 9.2 - As a general rule, there are about 20 drops of...Ch. 9.3 - How many ounces is a 12-pound bowling ball?Ch. 9.3 - Prob. 2TTOCh. 9.3 - Prob. 3TTOCh. 9.3 - (a) One of the weight classes in Olympic boxing is...Ch. 9.3 - Barts football coach tells him that hell start...Ch. 9.3 - Prob. 6TTOCh. 9.3 - Prob. 7TTOCh. 9.3 - Prob. 1ECh. 9.3 - In most applications, weight and mass are treated...Ch. 9.3 - Even though the base unit of mass/weight in the...Ch. 9.3 - Measuring temperatures in metric units is...Ch. 9.3 - How do powers of 10 fit into the metric system of...Ch. 9.3 - Prob. 6ECh. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - Prob. 11ECh. 9.3 - Prob. 12ECh. 9.3 - Prob. 13ECh. 9.3 - Prob. 14ECh. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 716, convert to the indicated unit....Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 1730, convert each metric weight to...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 3146, convert each amount to the...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 4752, convert each Celsius...Ch. 9.3 - For Exercises 5358, convert each Fahrenheit...Ch. 9.3 - Prob. 54ECh. 9.3 - Prob. 55ECh. 9.3 - For Exercises 5358, convert each Fahrenheit...Ch. 9.3 - Prob. 57ECh. 9.3 - Prob. 58ECh. 9.3 - Prob. 59ECh. 9.3 - Prob. 60ECh. 9.3 - Prob. 61ECh. 9.3 - Prob. 62ECh. 9.3 - Prob. 63ECh. 9.3 - Prob. 64ECh. 9.3 - When Cindy and Juan are informed that their new...Ch. 9.3 - Prob. 66ECh. 9.3 - Prob. 67ECh. 9.3 - Prob. 68ECh. 9.3 - Prob. 69ECh. 9.3 - For a chicken Marsala recipe, Janine needed 24 oz...Ch. 9.3 - Prob. 71ECh. 9.3 - Prob. 72ECh. 9.3 - Prob. 73ECh. 9.3 - Prob. 74ECh. 9.3 - Prob. 75ECh. 9.3 - While building a new playground at the city...Ch. 9.3 - Prob. 77ECh. 9.3 - During a dinner at Outback Steakhouse, a family of...Ch. 9.3 - An elevator says the maximum capacity is 1,000 kg....Ch. 9.3 - Prob. 80ECh. 9.3 - If the temperature goes down by 7 degrees Celsius...Ch. 9.3 - Between 8 A.M. and noon, the temperature rose by...Ch. 9.3 - Prob. 83ECh. 9.3 - A 1.7-ton truck crosses the border into Canada....Ch. 9.3 - Prob. 85ECh. 9.3 - Prob. 86ECh. 9.3 - Prob. 87ECh. 9.3 - Prob. 88ECh. 9.3 - (a) The bar graph shows the average monthly high...Ch. 9.3 - Australia is one of the worlds leading producers...Ch. 9.3 - Prob. 95ECh. 9.3 - Prob. 96ECh. 9.3 - Prob. 97ECh. 9.3 - Prob. 98ECh. 9 - For Exercises 116, convert each of the following...Ch. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Prob. 5RECh. 9 - Prob. 6RECh. 9 - Prob. 7RECh. 9 - Prob. 8RECh. 9 - Prob. 9RECh. 9 - Prob. 10RECh. 9 - Prob. 11RECh. 9 - Prob. 12RECh. 9 - Prob. 13RECh. 9 - Prob. 14RECh. 9 - Prob. 15RECh. 9 - For Exercises 116, convert each of the following...Ch. 9 - Prob. 17RECh. 9 - Prob. 18RECh. 9 - Prob. 19RECh. 9 - Prob. 20RECh. 9 - Prob. 21RECh. 9 - Prob. 22RECh. 9 - Prob. 23RECh. 9 - Prob. 24RECh. 9 - Prob. 25RECh. 9 - Prob. 26RECh. 9 - Prob. 27RECh. 9 - Prob. 28RECh. 9 - Prob. 29RECh. 9 - Prob. 30RECh. 9 - Prob. 31RECh. 9 - Prob. 32RECh. 9 - For Exercises 2341, convert each of the following...Ch. 9 - Prob. 34RECh. 9 - Prob. 35RECh. 9 - Prob. 36RECh. 9 - Prob. 37RECh. 9 - Prob. 38RECh. 9 - Prob. 39RECh. 9 - Prob. 40RECh. 9 - Prob. 41RECh. 9 - Prob. 42RECh. 9 - Prob. 43RECh. 9 - Prob. 44RECh. 9 - Prob. 45RECh. 9 - Prob. 46RECh. 9 - Prob. 47RECh. 9 - Prob. 48RECh. 9 - Prob. 49RECh. 9 - Prob. 50RECh. 9 - Prob. 51RECh. 9 - Prob. 52RECh. 9 - Prob. 53RECh. 9 - Prob. 54RECh. 9 - Prob. 55RECh. 9 - Prob. 56RECh. 9 - Prob. 57RECh. 9 - Prob. 58RECh. 9 - Prob. 59RECh. 9 - Prob. 60RECh. 9 - For Exercises 4962, convert each of the following...Ch. 9 - Prob. 62RECh. 9 - Prob. 63RECh. 9 - Prob. 64RECh. 9 - Prob. 65RECh. 9 - Prob. 66RECh. 9 - Prob. 67RECh. 9 - Prob. 68RECh. 9 - How many pounds is a baby who weighs 3,200 g?Ch. 9 - Heinrichs temperature is 38.5C. A person is...Ch. 9 - Prob. 71RECh. 9 - Prob. 72RECh. 9 - Prob. 73RECh. 9 - Prob. 1CTCh. 9 - Prob. 2CTCh. 9 - Prob. 3CTCh. 9 - Prob. 4CTCh. 9 - Prob. 5CTCh. 9 - Prob. 6CTCh. 9 - Prob. 7CTCh. 9 - Prob. 8CTCh. 9 - Prob. 9CTCh. 9 - Prob. 10CTCh. 9 - Prob. 11CTCh. 9 - For Exercises 121, convert each of the following:...Ch. 9 - Prob. 13CTCh. 9 - Prob. 14CTCh. 9 - Prob. 15CTCh. 9 - Prob. 16CTCh. 9 - Prob. 17CTCh. 9 - Prob. 18CTCh. 9 - Prob. 19CTCh. 9 - Prob. 20CTCh. 9 - Prob. 21CTCh. 9 - Prob. 22CTCh. 9 - If a runner averages 5.9 feet per second, how long...Ch. 9 - Prob. 24CTCh. 9 - Prob. 25CTCh. 9 - Prob. 26CTCh. 9 - Prob. 27CTCh. 9 - Prob. 28CTCh. 9 - Prob. 29CTCh. 9 - Prob. 30CTCh. 9 - A young family is looking to buy a house and...Ch. 9 - Prob. 32CTCh. 9 - Prob. 33CT
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