College Mathematics for Business, Economics, Life Sciences, and Social Sciences (14th Edition)
14th Edition
ISBN: 9780134674148
Author: Raymond A. Barnett, Michael R. Ziegler, Karl E. Byleen, Christopher J. Stocker
Publisher: PEARSON
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Chapter 4.6, Problem 48E
To determine
To explain: The reason by which the system could not be solved by matrix inverse methods and solve the system by alternative methods.
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Chapter 4 Solutions
College Mathematics for Business, Economics, Life Sciences, and Social Sciences (14th Edition)
Ch. 4.1 - Solve by graphing and check:
2x − y = −3
x + 2y =...Ch. 4.1 - Solve each of the following systems by graphing:
x...Ch. 4.1 - Prob. 3MPCh. 4.1 - Prob. 4MPCh. 4.1 - Prob. 5MPCh. 4.1 - Prob. 6MPCh. 4.1 - Prob. 7MPCh. 4.1 - Prob. 1EDCh. 4.1 - Prob. 2EDCh. 4.1 - In Problems 1–6, find the x and y coordinates of...
Ch. 4.1 - Prob. 2ECh. 4.1 - Prob. 3ECh. 4.1 - Prob. 4ECh. 4.1 - Prob. 5ECh. 4.1 - In Problems 1–6, find the x and y coordinates of...Ch. 4.1 - Prob. 7ECh. 4.1 - Prob. 8ECh. 4.1 - Prob. 9ECh. 4.1 - Prob. 10ECh. 4.1 - Prob. 11ECh. 4.1 - Match each system in Problems 9–12 with one of the...Ch. 4.1 - Solve Problems 13–16 by graphing.
13.
Ch. 4.1 - Solve Problems 13–16 by graphing.
14.
Ch. 4.1 - Prob. 15ECh. 4.1 - Prob. 16ECh. 4.1 - Prob. 17ECh. 4.1 - Prob. 18ECh. 4.1 - Prob. 19ECh. 4.1 - Prob. 20ECh. 4.1 - Prob. 21ECh. 4.1 - Prob. 22ECh. 4.1 - Prob. 23ECh. 4.1 - Prob. 24ECh. 4.1 - Prob. 25ECh. 4.1 - Prob. 26ECh. 4.1 - Prob. 27ECh. 4.1 - Prob. 28ECh. 4.1 - Prob. 29ECh. 4.1 - Prob. 30ECh. 4.1 - Prob. 31ECh. 4.1 - Prob. 32ECh. 4.1 - Prob. 33ECh. 4.1 - Prob. 34ECh. 4.1 - Prob. 35ECh. 4.1 - Prob. 36ECh. 4.1 - Prob. 37ECh. 4.1 - Prob. 38ECh. 4.1 - Prob. 39ECh. 4.1 - Prob. 40ECh. 4.1 - Prob. 41ECh. 4.1 - Prob. 42ECh. 4.1 - Prob. 43ECh. 4.1 - In a free competitive market, if the demand for a...Ch. 4.1 - Problems 45−48 are concerned with the linear...Ch. 4.1 -
Problems 45−48 are concerned with the linear...Ch. 4.1 - Problems 45−48 are concerned with the linear...Ch. 4.1 - Problems 45–48 are concerned with the linear...Ch. 4.1 - Prob. 49ECh. 4.1 - Prob. 50ECh. 4.1 - Prob. 51ECh. 4.1 - Prob. 52ECh. 4.1 - Prob. 53ECh. 4.1 - Prob. 54ECh. 4.1 - Prob. 55ECh. 4.1 - Prob. 56ECh. 4.1 - Prob. 57ECh. 4.1 - Prob. 58ECh. 4.1 - Prob. 59ECh. 4.1 - In Problems 57−62, graph the equations in the same...Ch. 4.1 - In Problems 57−62, graph the equations in the same...Ch. 4.1 -
In Problems 57−62, graph the equations in the...Ch. 4.1 - 63. The coefficients of the three systems given...Ch. 4.1 - Repeat problem 63 for the following systems:
...Ch. 4.1 - Supply and demand for T-shirts. Suppose that the...Ch. 4.1 - Supply and demand for baseball caps. Suppose that...Ch. 4.1 - Supply and demand for soybeans. At $4.80 per...Ch. 4.1 - Supply and demand for corn. At $2.13 per bushel,...Ch. 4.1 - Prob. 69ECh. 4.1 - Prob. 70ECh. 4.1 - Prob. 71ECh. 4.1 - Prob. 72ECh. 4.1 - Delivery charges. United Express, a national...Ch. 4.1 - Delivery charges. Refer to Problem 73. Federated...Ch. 4.1 - Prob. 75ECh. 4.1 - Prob. 76ECh. 4.1 - Animal diet. Animals in an experiment are to be...Ch. 4.1 - Prob. 78ECh. 4.1 - Prob. 79ECh. 4.1 - Prob. 80ECh. 4.1 - Prob. 81ECh. 4.1 - Prob. 82ECh. 4.1 - Prob. 83ECh. 4.1 - Prob. 84ECh. 4.1 - Prob. 85ECh. 4.2 - Solve using augmented matrix methods:
2x1 − x2 =...Ch. 4.2 - Prob. 2MPCh. 4.2 - Prob. 3MPCh. 4.2 - Prob. 4MPCh. 4.2 - Prob. 1EDCh. 4.2 - Prob. 2EDCh. 4.2 - Prob. 1ECh. 4.2 - Prob. 2ECh. 4.2 - Prob. 3ECh. 4.2 - Prob. 4ECh. 4.2 - Problems 1–14 refer to the following matrices: (If...Ch. 4.2 - Prob. 6ECh. 4.2 - Prob. 7ECh. 4.2 - Problems 1–14 refer to the following matrices: (If...Ch. 4.2 - Problems 1–14 refer to the following matrices: (If...Ch. 4.2 - Prob. 10ECh. 4.2 - Prob. 11ECh. 4.2 - Problems 1–14 refer to the following matrices: (If...Ch. 4.2 - Prob. 13ECh. 4.2 - Problems 1–14 refer to the following matrices: (If...Ch. 4.2 - Prob. 15ECh. 4.2 - Prob. 16ECh. 4.2 - Prob. 17ECh. 4.2 - Prob. 18ECh. 4.2 - Prob. 19ECh. 4.2 - Prob. 20ECh. 4.2 - Prob. 21ECh. 4.2 - Prob. 22ECh. 4.2 - Prob. 23ECh. 4.2 - Perform the row operations indicated in problems...Ch. 4.2 - Prob. 25ECh. 4.2 - Prob. 26ECh. 4.2 - Prob. 27ECh. 4.2 - Perform the row operations indicated in problem...Ch. 4.2 - Prob. 29ECh. 4.2 - Prob. 30ECh. 4.2 - Prob. 31ECh. 4.2 - Prob. 32ECh. 4.2 - Prob. 33ECh. 4.2 - Prob. 34ECh. 4.2 - Prob. 35ECh. 4.2 - Each of the matrices in Problems 35–42 is the...Ch. 4.2 - Prob. 37ECh. 4.2 - Prob. 38ECh. 4.2 - Prob. 39ECh. 4.2 - Prob. 40ECh. 4.2 - Prob. 41ECh. 4.2 - Prob. 42ECh. 4.2 - Prob. 43ECh. 4.2 - Prob. 44ECh. 4.2 - Prob. 45ECh. 4.2 - Prob. 46ECh. 4.2 - Prob. 47ECh. 4.2 - Solve Problems 47 and 48 using augmented matrix...Ch. 4.2 - Prob. 49ECh. 4.2 - Prob. 50ECh. 4.2 - Prob. 51ECh. 4.2 - Prob. 52ECh. 4.2 - Prob. 53ECh. 4.2 - Prob. 54ECh. 4.2 - Solve Problems 55– 74 using augmented, matrix...Ch. 4.2 - Prob. 56ECh. 4.2 - Prob. 57ECh. 4.2 - Prob. 58ECh. 4.2 - Prob. 59ECh. 4.2 - Prob. 60ECh. 4.2 - Prob. 61ECh. 4.2 - Prob. 62ECh. 4.2 - Solve Problems 55– 74 using augmented, matrix...Ch. 4.2 - Prob. 64ECh. 4.2 - Solve Problems 55– 74 using augmented, matrix...Ch. 4.2 - Prob. 66ECh. 4.2 - Solve Problems 55– 74 using augmented, matrix...Ch. 4.2 - Prob. 68ECh. 4.2 - Prob. 69ECh. 4.2 - Prob. 70ECh. 4.2 - Solve Problems 55-74 using augmented, matrix...Ch. 4.2 - Prob. 72ECh. 4.2 - Prob. 73ECh. 4.2 - Solve Problems 55-74 using augmented, matrix...Ch. 4.2 - Prob. 75ECh. 4.2 - Prob. 76ECh. 4.2 - Prob. 77ECh. 4.2 - Prob. 78ECh. 4.2 - Prob. 79ECh. 4.2 - Prob. 80ECh. 4.2 - Prob. 81ECh. 4.2 - Prob. 82ECh. 4.2 - Prob. 83ECh. 4.2 - Prob. 84ECh. 4.3 - The matrices below are not in reduced form....Ch. 4.3 - Solve by Gauss–Jordan elimination:
3x1 + x2 − 2x3...Ch. 4.3 - Solve by Gauss-Jordan elimination:
2x1 − 4x2 − x3...Ch. 4.3 - Solve by Gauss–Jordan elimination:
Ch. 4.3 - Prob. 5MPCh. 4.3 - Prob. 6MPCh. 4.3 - Prob. 1EDCh. 4.3 - Prob. 2EDCh. 4.3 - In Problems 1–4, write the augmented matrix of the...Ch. 4.3 - Prob. 2ECh. 4.3 - In Problems 1–4, write the augmented matrix of the...Ch. 4.3 - Prob. 4ECh. 4.3 - In Problems 5−8, write the system of linear...Ch. 4.3 - Prob. 6ECh. 4.3 - Prob. 7ECh. 4.3 - Prob. 8ECh. 4.3 - In Problems 9–18, if a matrix is in reduced form,...Ch. 4.3 - In Problems 9–18, if a matrix is in reduced form,...Ch. 4.3 - In Problems 9–18, if a matrix is in reduced form,...Ch. 4.3 - In Problems 9–18, if a matrix is in reduced form,...Ch. 4.3 - In Problems 9–18, if a matrix is in reduced form,...Ch. 4.3 - Prob. 14ECh. 4.3 - In Problems 9–18, if a matrix is in reduced form,...Ch. 4.3 - Prob. 16ECh. 4.3 - In Problems 9–18, if a matrix is in reduced form,...Ch. 4.3 - Prob. 18ECh. 4.3 - In Problems 19–28, write the solution of the...Ch. 4.3 - Prob. 20ECh. 4.3 - In Problems 19–28, write the solution of the...Ch. 4.3 - Prob. 22ECh. 4.3 - In Problems 19–28, write the solution of the...Ch. 4.3 - Prob. 24ECh. 4.3 - In Problems 19–28, write the solution of the...Ch. 4.3 - Prob. 26ECh. 4.3 - In Problems 19–28, write the solution of the...Ch. 4.3 - Prob. 28ECh. 4.3 - Prob. 29ECh. 4.3 - Prob. 30ECh. 4.3 - In which of Problems 19, 21, 23, 25, and 27 is the...Ch. 4.3 - Prob. 32ECh. 4.3 - In Problems 33–38, discuss the validity of each...Ch. 4.3 - Prob. 34ECh. 4.3 - Prob. 35ECh. 4.3 - Prob. 36ECh. 4.3 - Prob. 37ECh. 4.3 - Prob. 38ECh. 4.3 - Prob. 39ECh. 4.3 - Use row operations to change each matrix in...Ch. 4.3 - Prob. 41ECh. 4.3 - Prob. 42ECh. 4.3 - Prob. 43ECh. 4.3 - Prob. 44ECh. 4.3 - Prob. 45ECh. 4.3 - Prob. 46ECh. 4.3 - Solve Problems 47–62 using Gauss–Jordan...Ch. 4.3 - Prob. 48ECh. 4.3 - Prob. 49ECh. 4.3 - Prob. 50ECh. 4.3 - Solve Problems 47–62 using Gauss–Jordan...Ch. 4.3 - Prob. 52ECh. 4.3 - Solve Problems 47–62 using Gauss–Jordan...Ch. 4.3 - Prob. 54ECh. 4.3 - Solve Problems 47–62 using Gauss–Jordan...Ch. 4.3 - Prob. 56ECh. 4.3 - Prob. 57ECh. 4.3 - Prob. 58ECh. 4.3 - Solve Problems 47–62 using Gauss–Jordan...Ch. 4.3 - Prob. 60ECh. 4.3 - Prob. 61ECh. 4.3 - Prob. 62ECh. 4.3 - Consider a consistent system of three linear...Ch. 4.3 - Prob. 64ECh. 4.3 - Prob. 65ECh. 4.3 - Solve Problems 47–62 using Gauss–Jordan...Ch. 4.3 - Solve Problems 47–62 using Gauss–Jordan...Ch. 4.3 - Prob. 68ECh. 4.3 - Prob. 69ECh. 4.3 - Prob. 70ECh. 4.3 - Find a, b, and c so that the graph of the...Ch. 4.3 - Prob. 72ECh. 4.3 - Construct a mathematical model for each the...Ch. 4.3 - Prob. 74ECh. 4.3 - Construct a mathematical model for each the...Ch. 4.3 - Construct a mathematical model for each the...Ch. 4.3 - Construct a mathematical model for each of the...Ch. 4.3 - Prob. 78ECh. 4.3 - Construct a mathematical model for each the...Ch. 4.3 - Prob. 80ECh. 4.3 - Prob. 81ECh. 4.3 - Taxable income. Repeat Problem 81 if tax law is...Ch. 4.3 - Construct a mathematical model for each the...Ch. 4.3 - Prob. 84ECh. 4.3 - Prob. 85ECh. 4.3 - Prob. 86ECh. 4.3 - Construct a mathematical model for each of the...Ch. 4.3 - Prob. 88ECh. 4.3 - Population growth. The U.S. population was...Ch. 4.3 - Prob. 90ECh. 4.3 - Prob. 91ECh. 4.3 - Prob. 92ECh. 4.3 - Prob. 93ECh. 4.3 - Prob. 94ECh. 4.3 - Sociology. Two sociologists have grant money to...Ch. 4.3 - Prob. 96ECh. 4.3 - Prob. 97ECh. 4.3 - Traffic flow. Refer to Problem 97. Closing...Ch. 4.4 - Add:
Ch. 4.4 - Prob. 2MPCh. 4.4 - Prob. 3MPCh. 4.4 - Prob. 4MPCh. 4.4 - Prob. 5MPCh. 4.4 - Prob. 6MPCh. 4.4 - Prob. 7MPCh. 4.4 - Find each product, if it is...Ch. 4.4 - Prob. 9MPCh. 4.4 - Prob. 10MPCh. 4.4 - Prob. 1EDCh. 4.4 - Prob. 1ECh. 4.4 - Prob. 2ECh. 4.4 - Prob. 3ECh. 4.4 - Prob. 4ECh. 4.4 - Prob. 5ECh. 4.4 - Prob. 6ECh. 4.4 - Prob. 7ECh. 4.4 - Prob. 8ECh. 4.4 - In Problems 1–14, perform the indicated operation,...Ch. 4.4 - Prob. 10ECh. 4.4 - Prob. 11ECh. 4.4 - Prob. 12ECh. 4.4 - In Problems 1–14, perform the indicated operation,...Ch. 4.4 - Prob. 14ECh. 4.4 - Prob. 15ECh. 4.4 - Prob. 16ECh. 4.4 - In Problems 15–22, find the matrix product. Note...Ch. 4.4 - Prob. 18ECh. 4.4 - Prob. 19ECh. 4.4 - Prob. 20ECh. 4.4 - In Problems 15–22, find the matrix product. Note...Ch. 4.4 - Prob. 22ECh. 4.4 - Prob. 23ECh. 4.4 - Prob. 24ECh. 4.4 - B Find the products in Problems 23–30.
25.
Ch. 4.4 - Prob. 26ECh. 4.4 - Prob. 27ECh. 4.4 - Prob. 28ECh. 4.4 -
Find the products in problems 23–30.
29.
Ch. 4.4 - Prob. 30ECh. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Prob. 36ECh. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Prob. 38ECh. 4.4 - Prob. 39ECh. 4.4 - Prob. 40ECh. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Prob. 42ECh. 4.4 - Prob. 43ECh. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Problems 31–48 refer to the following...Ch. 4.4 - Prob. 46ECh. 4.4 - Prob. 47ECh. 4.4 - Prob. 48ECh. 4.4 - If a and b are nonzero real numbers,
find AB and...Ch. 4.4 - Prob. 50ECh. 4.4 - Prob. 51ECh. 4.4 - Prob. 52ECh. 4.4 - Prob. 53ECh. 4.4 - Prob. 54ECh. 4.4 - If a, b, c, and d so that
Ch. 4.4 - Prob. 56ECh. 4.4 - If a, b, c, and d, so that
Ch. 4.4 - Prob. 58ECh. 4.4 - Prob. 59ECh. 4.4 - Prob. 60ECh. 4.4 - Prob. 61ECh. 4.4 - Prob. 62ECh. 4.4 - Prob. 63ECh. 4.4 - Prob. 64ECh. 4.4 - Prob. 65ECh. 4.4 - Prob. 66ECh. 4.4 - Markup. An import car dealer sells three models of...Ch. 4.4 - Prob. 68ECh. 4.4 - Labor costs. A company with manufacturing plants...Ch. 4.4 - Inventory value. A personal computer retail...Ch. 4.4 - Prob. 71ECh. 4.4 - Prob. 72ECh. 4.4 - Prob. 73ECh. 4.4 - Prob. 74ECh. 4.5 - Prob. 1MPCh. 4.5 - Prob. 2MPCh. 4.5 - Prob. 3MPCh. 4.5 - Prob. 4MPCh. 4.5 - Prob. 5MPCh. 4.5 - Prob. 1EDCh. 4.5 - Prob. 2EDCh. 4.5 - Prob. 3EDCh. 4.5 - In Problems 1-4, find the additive inverse and the...Ch. 4.5 - Prob. 2ECh. 4.5 - Prob. 3ECh. 4.5 - Prob. 4ECh. 4.5 - Prob. 5ECh. 4.5 - Prob. 6ECh. 4.5 - Prob. 7ECh. 4.5 - Prob. 8ECh. 4.5 - Prob. 9ECh. 4.5 - Prob. 10ECh. 4.5 - Prob. 11ECh. 4.5 - Prob. 12ECh. 4.5 - Prob. 13ECh. 4.5 - Prob. 14ECh. 4.5 - Prob. 15ECh. 4.5 - Prob. 16ECh. 4.5 - Prob. 17ECh. 4.5 - Prob. 18ECh. 4.5 - Prob. 19ECh. 4.5 - Prob. 20ECh. 4.5 - In Problems 19–28, examine the product of the two...Ch. 4.5 - Prob. 22ECh. 4.5 - In Problems 19–28, examine the product of the two...Ch. 4.5 - Prob. 24ECh. 4.5 - In Problems 19–28, examine the product of the two...Ch. 4.5 - Prob. 26ECh. 4.5 - Prob. 27ECh. 4.5 - Prob. 28ECh. 4.5 - Without performing any row operations, explain why...Ch. 4.5 - Prob. 30ECh. 4.5 - Prob. 31ECh. 4.5 - Prob. 32ECh. 4.5 - Without performing any row operations, explain why...Ch. 4.5 - Prob. 34ECh. 4.5 - Prob. 35ECh. 4.5 - Prob. 36ECh. 4.5 - Without performing any row operations, explain why...Ch. 4.5 - Prob. 38ECh. 4.5 - Prob. 39ECh. 4.5 - Prob. 40ECh. 4.5 - Given M in problems 39–48, find M−1 and show that...Ch. 4.5 - Prob. 42ECh. 4.5 - Prob. 43ECh. 4.5 - Prob. 44ECh. 4.5 - Given M in Problems 39–48, find M–1and show that...Ch. 4.5 - Prob. 46ECh. 4.5 - Prob. 47ECh. 4.5 - Prob. 48ECh. 4.5 - Find the inverse of each matrix in Problems 49–56,...Ch. 4.5 - Prob. 50ECh. 4.5 - Find the inverse of each matrix in problem 49–56,...Ch. 4.5 - Given M in problem 39–48, find M–1 and show that...Ch. 4.5 - Find the inverse of each matrix in problems 49–56,...Ch. 4.5 - Prob. 54ECh. 4.5 - Prob. 55ECh. 4.5 - Prob. 56ECh. 4.5 - In Problems 57–60, find the inverse. Note that...Ch. 4.5 - Prob. 58ECh. 4.5 - Prob. 59ECh. 4.5 - Prob. 60ECh. 4.5 - Find the inverse of each matrix in problems 61–68,...Ch. 4.5 - Find the inverse of each matrix in problems 61–68,...Ch. 4.5 - Find the inverse of each matrix in problems 61–68,...Ch. 4.5 - Prob. 64ECh. 4.5 - Find the inverse of each matrix in problems 61–68,...Ch. 4.5 - Find the inverse of each matrix in problems 61–68,...Ch. 4.5 - Prob. 67ECh. 4.5 - Prob. 68ECh. 4.5 - Show that (A–1)–1 = A for: A =
Ch. 4.5 - Prob. 70ECh. 4.5 - Prob. 71ECh. 4.5 - Prob. 72ECh. 4.5 - Prob. 73ECh. 4.5 - Prob. 74ECh. 4.5 - Prob. 75ECh. 4.5 - Prob. 76ECh. 4.5 - Prob. 77ECh. 4.5 - Prob. 78ECh. 4.5 - Cryptography. The following message was encoded...Ch. 4.5 - Prob. 80ECh. 4.5 - Prob. 81ECh. 4.5 - Prob. 82ECh. 4.5 - Prob. 83ECh. 4.5 - Prob. 84ECh. 4.5 - Prob. 85ECh. 4.5 - Prob. 86ECh. 4.5 - Prob. 87ECh. 4.5 - Prob. 88ECh. 4.6 - Given an n × n matrix A and n × 1 column matrices...Ch. 4.6 - Prob. 2MPCh. 4.6 - Prob. 3MPCh. 4.6 - Prob. 4MPCh. 4.6 - Prob. 1EDCh. 4.6 - Prob. 1ECh. 4.6 - Prob. 2ECh. 4.6 - Prob. 3ECh. 4.6 - Prob. 4ECh. 4.6 - Prob. 5ECh. 4.6 - Prob. 6ECh. 4.6 - Prob. 7ECh. 4.6 - Prob. 8ECh. 4.6 - Write Problems 9–12 as systems of linear equations...Ch. 4.6 - Prob. 10ECh. 4.6 - Write problems 9–12 as system of linear equations...Ch. 4.6 - Prob. 12ECh. 4.6 - Write each system on Problems 13–16 as a matrix...Ch. 4.6 - Prob. 14ECh. 4.6 - Write each system in Problems 13–16 as a matrix...Ch. 4.6 - Prob. 16ECh. 4.6 - Find x1 and x2 in problems 17–20.
Ch. 4.6 - Prob. 18ECh. 4.6 - Prob. 19ECh. 4.6 - Prob. 20ECh. 4.6 - In Problems 21–24, find x1 and x2.
Ch. 4.6 - Prob. 22ECh. 4.6 - Prob. 23ECh. 4.6 - In Problems 21–24, find x1 and x2.
Ch. 4.6 - In Problems 25–30, solve for x1 and x2.
Ch. 4.6 - In Problems 25–30, solve for x1 and x2.
Ch. 4.6 - Prob. 27ECh. 4.6 - Prob. 28ECh. 4.6 - In problems 25–30, solve for x1 and x2.
Ch. 4.6 - Prob. 30ECh. 4.6 - In Problems 31–38, write each system as a matrix...Ch. 4.6 - Prob. 32ECh. 4.6 - Prob. 33ECh. 4.6 - Prob. 34ECh. 4.6 - In Problems 31–38, write each system as a matrix...Ch. 4.6 - Prob. 36ECh. 4.6 - Prob. 37ECh. 4.6 - Prob. 38ECh. 4.6 - Prob. 39ECh. 4.6 - Prob. 40ECh. 4.6 - Prob. 41ECh. 4.6 - Prob. 42ECh. 4.6 - Prob. 43ECh. 4.6 - Prob. 44ECh. 4.6 - In Problems 45–50, explain why the system cannot...Ch. 4.6 - Prob. 46ECh. 4.6 - In Problems 45–50, explain why the system cannot...Ch. 4.6 - Prob. 48ECh. 4.6 - In Problems 45–50, explain why the system cannot...Ch. 4.6 - Prob. 50ECh. 4.6 - Prob. 51ECh. 4.6 - Prob. 52ECh. 4.6 - Prob. 53ECh. 4.6 - Prob. 54ECh. 4.6 - Prob. 55ECh. 4.6 - Prob. 56ECh. 4.6 - Prob. 57ECh. 4.6 - Prob. 58ECh. 4.6 - In Problems 59–62, write each system as a matrix...Ch. 4.6 - Prob. 60ECh. 4.6 - Prob. 61ECh. 4.6 - Prob. 62ECh. 4.6 - Concert tickets. A concert hall has 10,000 seats...Ch. 4.6 - Prob. 64ECh. 4.6 - Production scheduling. A supplier manufactures car...Ch. 4.6 - Prob. 66ECh. 4.6 - Prob. 67ECh. 4.6 - Prob. 68ECh. 4.6 - Prob. 69ECh. 4.6 - Prob. 70ECh. 4.7 - An economy is based on three sectors, coal, oil,...Ch. 4.7 - Prob. 1EDCh. 4.7 - Prob. 1ECh. 4.7 - Prob. 2ECh. 4.7 - Prob. 3ECh. 4.7 - Prob. 4ECh. 4.7 - Prob. 5ECh. 4.7 - Prob. 6ECh. 4.7 - Prob. 7ECh. 4.7 - Prob. 8ECh. 4.7 - Problems 9–14 pertain to the following...Ch. 4.7 - Problems 9–14 pertain to the following input-...Ch. 4.7 - Prob. 11ECh. 4.7 - Prob. 12ECh. 4.7 - Prob. 13ECh. 4.7 - Prob. 14ECh. 4.7 - Prob. 15ECh. 4.7 - Prob. 16ECh. 4.7 - Prob. 17ECh. 4.7 - Prob. 18ECh. 4.7 - Prob. 19ECh. 4.7 - Problems 15–20 pertain to the following input-...Ch. 4.7 - Prob. 21ECh. 4.7 - Prob. 22ECh. 4.7 - Prob. 23ECh. 4.7 - Prob. 24ECh. 4.7 - Prob. 25ECh. 4.7 - Prob. 26ECh. 4.7 - Prob. 27ECh. 4.7 - Prob. 28ECh. 4.7 - Prob. 29ECh. 4.7 - Prob. 30ECh. 4.7 - Prob. 31ECh. 4.7 - Prob. 32ECh. 4.7 - Prob. 33ECh. 4.7 - Prob. 34ECh. 4.7 - Prob. 35ECh. 4.7 - Prob. 36ECh. 4.7 - Prob. 37ECh. 4.7 - Prob. 38ECh. 4.7 - Prob. 39ECh. 4.7 - Prob. 40ECh. 4.7 - Prob. 41ECh. 4.7 - Repeat Problem 41 with the following table:
Four...Ch. 4 - Prob. 1RECh. 4 - Prob. 2RECh. 4 - Prob. 3RECh. 4 - Prob. 4RECh. 4 - Prob. 5RECh. 4 - Prob. 6RECh. 4 - Prob. 7RECh. 4 - Prob. 8RECh. 4 - Prob. 9RECh. 4 - Prob. 10RECh. 4 - Prob. 11RECh. 4 - Prob. 12RECh. 4 - Prob. 13RECh. 4 - Prob. 14RECh. 4 - Prob. 15RECh. 4 - Prob. 16RECh. 4 - Prob. 17RECh. 4 - Prob. 18RECh. 4 - Prob. 19RECh. 4 - Prob. 20RECh. 4 - Prob. 21RECh. 4 - Prob. 22RECh. 4 - Prob. 23RECh. 4 - Prob. 24RECh. 4 - Prob. 25RECh. 4 - Prob. 26RECh. 4 - Prob. 27RECh. 4 - Prob. 28RECh. 4 - Prob. 29RECh. 4 - Prob. 30RECh. 4 - Prob. 31RECh. 4 - Prob. 32RECh. 4 - Prob. 33RECh. 4 - Prob. 34RECh. 4 - Prob. 35RECh. 4 - Prob. 36RECh. 4 - Prob. 37RECh. 4 - Prob. 38RECh. 4 - Prob. 39RECh. 4 - Prob. 40RECh. 4 - Prob. 41RECh. 4 - Prob. 42RECh. 4 - Prob. 43RECh. 4 - Prob. 44RECh. 4 - Prob. 45RECh. 4 - Prob. 46RECh. 4 - Prob. 47RECh. 4 - Prob. 48RECh. 4 - Prob. 49RECh. 4 - Prob. 50RECh. 4 - Prob. 51RECh. 4 - Prob. 52RECh. 4 - Prob. 53RE
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- A marketing professor has surveyed the students at her university to better understand attitudes towards PPT usage for higher education. To be able to make inferences to the entire student body, the sample drawn needs to represent the university’s student population on all key characteristics. The table below shows the five key student demographic variables. The professor found the breakdown of the overall student body in the university’s fact book posted online. A non-parametric chi-square test was used to test the sample demographics against the population percentages shown in the table above. Review the output for the five chi-square tests on the following pages and answer the five questions: Based on the chi-square test, which sample variables adequately represent the university’s student population and which ones do not? Support your answer by providing the p-value of the chi-square test and explaining what it means. Using the results from Question 1, make recommendation for…arrow_forwardQuestion 9 1 5 4 3 2 1 -8 -7 -05 -4 -3 -2 1 1 2 3 4 5 6 7 8 -1 7 -2 -3 -4 -5+ 1-6+ For the graph above, find the function of the form -tan(bx) + c f(x) =arrow_forwardQuestion 8 5 4 3 2 1 -8 -7 -6 -5/-4 -3 -2 -1, 1 2 3 4 5 6 7/8 -1 -2 -3 -4 -5 0/1 pt 3 98 C -6 For the graph above, find the function of the form f(x)=a tan(bx) where a=-1 or +1 only f(x) = = Question Help: Video Submit Question Jump to Answerarrow_forward
- A marketing professor has surveyed the students at her university to better understand attitudes towards PPT usage for higher education. To be able to make inferences to the entire student body, the sample drawn needs to represent the university’s student population on all key characteristics. The table below shows the five key student demographic variables. The professor found the breakdown of the overall student body in the university’s fact book posted online. A non-parametric chi-square test was used to test the sample demographics against the population percentages shown in the table above. Review the output for the five chi-square tests on the following pages and answer the five questions: Based on the chi-square test, which sample variables adequately represent the university’s student population and which ones do not? Support your answer by providing the p-value of the chi-square test and explaining what it means. Using the results from Question 1, make recommendation for…arrow_forwardQuestion 10 6 5 4 3 2 -π/4 π/4 π/2 -1 -2 -3- -4 -5- -6+ For the graph above, find the function of the form f(x)=a tan(bx)+c where a=-1 or +1 only f(x) = Question Help: Videoarrow_forwardMODELING REAL LIFE Your checking account has a constant balance of $500. Let the function $m$ represent the balance of your savings account after $t$ years. The table shows the total balance of the accounts over time. Year, $t$ Total balance 0 1 2 3 4 5 $2500 $2540 $2580.80 $2622.42 $2664.86 $2708.16 a. Write a function $B$ that represents the total balance after $t$ years. Round values to the nearest hundredth, if necessary. $B\left(t\right)=$ Question 2 b. Find $B\left(8\right)$ . About $ a Question 3 Interpret $B\left(8\right)$ . b represents the total balance checking and saving accounts after 8 years the balance would be 16 / 10000 Word Limit16 words written of 10000 allowed Question 4 c. Compare the savings account to the account, You deposit $9000 in a savings account that earns 3.6% annual interest compounded monthly. A = 11998.70 SINCE 9000 is the principal ( 1+0.036/12)12 times 8 gives me aproxtimately 1997 14 / 10000 Word Limit14 words written of 10000 allowed Skip to…arrow_forward
- Listen MODELING REAL LIFE Your checking account has a constant balance of $500. Let the function m represent the balance of your savings account after t years. The table shows the total balance of the accounts over time. Year, t Total balance 0 $2500 1 $2540 2 $2580.80 3 $2622.42 4 $2664.86 5 $2708.16 a. Write a function B that represents the total balance after t years. Round values to the nearest hundredth, if necessary. B(t) = 500 + 2000(1.02)* b. Find B(8). About $2843.32 Interpret B(8). B I U E T² T₂ c. Compare the savings account to the account, You deposit $9000 in a savings account that earns 3.6% annual interest compounded monthly. B I U E E T² T₂ A = 11998.70 SINCE 9000 is the principal (1+0.036/12)12 times 8 gives me aproxtimately 1997arrow_forward14. Show that if a, b, and c are integers such that (a, b) = 1 and c | (a+b), then (c, a) = (c, b) = 1.arrow_forwardA retail chain is interested in determining whether a digital video point-of-purchase (POP) display would stimulate higher sales for a brand advertised compared to the standard cardboard point-of-purchase display. To test this, a one-shot static group design experiment was conducted over a four-week period in 100 different stores. Fifty stores were randomly assigned to the control treatment (standard display) and the other 50 stores were randomly assigned to the experimental treatment (digital display). Compare the sales of the control group (standard POP) to the experimental group (digital POP). What were the average sales for the standard POP display (control group)? What were the sales for the digital display (experimental group)? What is the (mean) difference in sales between the experimental group and control group? List the null hypothesis being tested. Do you reject or retain the null hypothesis based on the results of the independent t-test? Was the difference between the…arrow_forward
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