Pathways to Math Literacy with 18 Week ALEKS Access Card
1st Edition
ISBN: 9781259278723
Author: David Sobecki Professor, Brian A. Mercer
Publisher: McGraw-Hill Education
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Chapter 3.2, Problem 2A
To determine
The reason due to which the graph of the depreciation function of the value of stamping machine is a straight line, when the following table shows the depreciation in the value of the stamping machine every
| Months | Value |
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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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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 3 Solutions
Pathways to Math Literacy with 18 Week ALEKS Access Card
Ch. 3.1 - Prob. 0LOCh. 3.1 - Prob. 1CCh. 3.1 - Prob. 2CCh. 3.1 - Prob. 3CCh. 3.1 - Prob. 4CCh. 3.1 - Prob. 5CCh. 3.1 - Prob. 1GCh. 3.1 - Prob. 2GCh. 3.1 - Prob. 3GCh. 3.1 - Prob. 4G
Ch. 3.1 - Prob. 5GCh. 3.1 - Prob. 6GCh. 3.1 - Prob. 7GCh. 3.1 - Prob. 8GCh. 3.1 - Prob. 9GCh. 3.1 - Prob. 10GCh. 3.1 - Prob. 11GCh. 3.1 - Prob. 12GCh. 3.1 - Prob. 13GCh. 3.1 - Prob. 14GCh. 3.1 - Prob. 15GCh. 3.1 - Prob. 16GCh. 3.1 - Prob. 17GCh. 3.1 - Prob. 1TCh. 3.1 - Prob. 1RCh. 3.1 - Prob. 2RCh. 3.1 - Prob. 3RCh. 3.1 - Prob. 4RCh. 3.1 - Prob. 5RCh. 3.1 - Prob. 1ACh. 3.1 - Prob. 2ACh. 3.1 - Prob. 3ACh. 3.1 - Prob. 4ACh. 3.1 - Prob. 5ACh. 3.1 - Prob. 6ACh. 3.1 - Prob. 7ACh. 3.2 - Prob. 0LOCh. 3.2 - Prob. 1CCh. 3.2 - Prob. 2CCh. 3.2 - Prob. 3CCh. 3.2 - Prob. 4CCh. 3.2 - Prob. 5CCh. 3.2 - Prob. 6CCh. 3.2 - Prob. 7CCh. 3.2 - Prob. 8CCh. 3.2 - Prob. 9CCh. 3.2 - Prob. 10CCh. 3.2 - Prob. 1GCh. 3.2 - Prob. 2GCh. 3.2 - Prob. 3GCh. 3.2 - Prob. 4GCh. 3.2 - Prob. 5GCh. 3.2 - Prob. 6GCh. 3.2 - Prob. 7GCh. 3.2 - Prob. 8GCh. 3.2 - Prob. 9GCh. 3.2 - Prob. 10GCh. 3.2 - Prob. 11GCh. 3.2 - Prob. 12GCh. 3.2 - Prob. 13GCh. 3.2 - Complete the Applications portion of this lesson...Ch. 3.2 - Prob. 1RCh. 3.2 - Prob. 2RCh. 3.2 - Type a short answer to each question. Take another...Ch. 3.2 - Type a short answer to each question. What...Ch. 3.2 - Prob. 1ACh. 3.2 - Prob. 2ACh. 3.2 - Prob. 3ACh. 3.2 - Prob. 4ACh. 3.2 - Prob. 5ACh. 3.2 - Prob. 6ACh. 3.2 - Prob. 7ACh. 3.3 - Prob. 0LOCh. 3.3 - Prob. 1GCh. 3.3 - Prob. 2GCh. 3.3 - Prob. 3GCh. 3.3 - Prob. 4GCh. 3.3 - Prob. 5GCh. 3.3 - Prob. 6GCh. 3.3 - Prob. 7GCh. 3.3 - Prob. 8GCh. 3.3 - Prob. 9GCh. 3.3 - Prob. 10GCh. 3.3 - Prob. 11GCh. 3.3 - Nice job so far, but did we forget to mention the...Ch. 3.3 - Prob. 13GCh. 3.3 - Prob. 1CCh. 3.3 - Prob. 2CCh. 3.3 - Prob. 3CCh. 3.3 - Prob. 2RCh. 3.3 - Type a short answer to each question. Take another...Ch. 3.3 - Prob. 4RCh. 3.3 - Prob. 1ACh. 3.3 - Prob. 2ACh. 3.3 - Prob. 3ACh. 3.3 - Prob. 4ACh. 3.3 - Prob. 5ACh. 3.3 - Prob. 6ACh. 3.3 - Prob. 7ACh. 3.4 - Prob. 0LOCh. 3.4 - Prob. 1GCh. 3.4 - Prob. 2GCh. 3.4 - Prob. 3GCh. 3.4 - Prob. 4GCh. 3.4 - Prob. 5GCh. 3.4 - Use your equation to find the mass of each of the...Ch. 3.4 - What is the relationship between the slope of the...Ch. 3.4 - Prob. 8GCh. 3.4 - Prob. 9GCh. 3.4 - Prob. 10GCh. 3.4 - Prob. 11GCh. 3.4 - Prob. 12GCh. 3.4 - Divide each distance in your table by the...Ch. 3.4 - Prob. 14GCh. 3.4 - Prob. 15GCh. 3.4 - Prob. 16GCh. 3.4 - Prob. 17GCh. 3.4 - Prob. 1RCh. 3.4 - Prob. 2RCh. 3.4 - Prob. 3RCh. 3.4 - Use the Internet to find and write the current...Ch. 3.4 - Complete the table using the current exchange...Ch. 3.4 - Write an equation that will convert U.S. dollars...Ch. 3.4 - Which is the independent variable in your...Ch. 3.5 - Prob. 0LOCh. 3.5 - Prob. 1CCh. 3.5 - Prob. 2CCh. 3.5 - Prob. 3CCh. 3.5 - Prob. 4CCh. 3.5 - Prob. 5CCh. 3.5 - Prob. 6CCh. 3.5 - Prob. 7CCh. 3.5 - Prob. 8CCh. 3.5 - Prob. 9CCh. 3.5 - Prob. 10CCh. 3.5 - Prob. 11CCh. 3.5 - Prob. 12CCh. 3.5 - Prob. 13CCh. 3.5 - Prob. 14CCh. 3.5 - Prob. 15CCh. 3.5 - Prob. 1GCh. 3.5 - Prob. 2GCh. 3.5 - Prob. 3GCh. 3.5 - Prob. 4GCh. 3.5 - Prob. 5GCh. 3.5 - Prob. 6GCh. 3.5 - Prob. 7GCh. 3.5 - Prob. 8GCh. 3.5 - Prob. 9GCh. 3.5 - Prob. 10GCh. 3.5 - Prob. 11GCh. 3.5 - Prob. 12GCh. 3.5 - Prob. 13GCh. 3.5 - Prob. 14GCh. 3.5 - Prob. 15GCh. 3.5 - Prob. 16GCh. 3.5 - Prob. 17GCh. 3.5 - Prob. 18GCh. 3.5 - Prob. 1TCh. 3.5 - Prob. 1RCh. 3.5 - Prob. 2RCh. 3.5 - Prob. 3RCh. 3.5 - Prob. 4RCh. 3.5 - Prob. 5RCh. 3.5 - Prob. 1ACh. 3.5 - Explain why a linear equation seems like a...Ch. 3.5 - Prob. 3ACh. 3.5 - Prob. 4ACh. 3.5 - Prob. 5ACh. 3.5 - Prob. 6ACh. 3.5 - Prob. 7ACh. 3.5 - Prob. 8ACh. 3.6 - Prob. 0LOCh. 3.6 - Decide if you think the two quantities are likely...Ch. 3.6 - Prob. 2CCh. 3.6 - Prob. 3CCh. 3.6 - Prob. 4CCh. 3.6 - Prob. 5CCh. 3.6 - Prob. 6CCh. 3.6 - Prob. 7CCh. 3.6 - Prob. 8CCh. 3.6 - Prob. 9CCh. 3.6 - Prob. 10CCh. 3.6 - Prob. 11CCh. 3.6 - Prob. 12CCh. 3.6 - Prob. 13CCh. 3.6 - Prob. 14CCh. 3.6 - When finding the line of best fit using a graphing...Ch. 3.6 - Prob. 16CCh. 3.6 - Prob. 1GCh. 3.6 - Prob. 2GCh. 3.6 - Draw a scatter plot on graph paper with shoe size...Ch. 3.6 - Prob. 4GCh. 3.6 - Prob. 5GCh. 3.6 - Prob. 6GCh. 3.6 - Prob. 7GCh. 3.6 - Prob. 8GCh. 3.6 - Prob. 9GCh. 3.6 - Prob. 10GCh. 3.6 - Prob. 11GCh. 3.6 - Prob. 12GCh. 3.6 - Prob. 13GCh. 3.6 - Prob. 14GCh. 3.6 - Do an Internet search for 1968 mens long jump....Ch. 3.6 - Prob. 1RCh. 3.6 - Prob. 2RCh. 3.6 - Prob. 3RCh. 3.6 - Prob. 4RCh. 3.6 - Prob. 1ACh. 3.6 - Prob. 2ACh. 3.6 - Use a graphing calculator or spreadsheet to create...Ch. 3.6 - What is the slope of the line? What does it mean?Ch. 3.6 - Prob. 5ACh. 3.6 - Prob. 6ACh. 3.6 - Prob. 7ACh. 3.6 - What is the correlation coefficient for the data?...Ch. 3.7 - Prob. 0LOCh. 3.7 - Summarize Polyas problem solving strategy from...Ch. 3.7 - Prob. 2CCh. 3.7 - Prob. 3CCh. 3.7 - Prob. 4CCh. 3.7 - Prob. 5CCh. 3.7 - With only a 200 point final remaining, Se Ri has...Ch. 3.7 - Prob. 2GCh. 3.7 - Prob. 3GCh. 3.7 - Prob. 4GCh. 3.7 - Prob. 1RCh. 3.7 - Prob. 2RCh. 3.7 - Prob. 3RCh. 3.7 - Prob. 4RCh. 3.7 - Parents with young babies buy a lot of diapers (to...Ch. 3.7 - Prob. 5ACh. 3.7 - Prob. 6ACh. 3.7 - Prob. 7ACh. 3.7 - Prob. 8ACh. 3.7 - Prob. 9ACh. 3.7 - Prob. 10ACh. 3.7 - Prob. 11A
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