Intermediate Algebra (8th Edition)
8th Edition
ISBN: 9780134178967
Author: John Tobey Jr., Jeffrey Slater, Jamie Blair, Jenny Crawford
Publisher: PEARSON
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Textbook Question
Chapter 4.4, Problem 29E
Hint: In exercises 29 and 30, it the coordinates of a boundary point contain fractions, it is wise to obtain the point of intersection algebraically rather than graphically.
Hospital Staffing Levels The equation that represents the proper level of medical staffing in the cardiac care unit of a local hospital is
a. Graph the region satisfying all of the medical requirements for the cardiac care unit. Use the following special graph grid, where D is measured on the horizontal axis and N is measured on the vertical axis.
b. If there are three doctors and two nurses on duty in the cardiac care unit, are all of the medical requirements satisfied?
c. If there is one doctor and four nurses on duty in the cardiac care unit, are all of the medical requirements satisfied?
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Question 7. If det d e f
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Question 1. Solve the system
-
x1 x2 + 3x3 + 2x4
-x1 + x22x3 + x4
2x12x2+7x3+7x4
Question 2. Consider the system
= 1
=-2
= 1
3x1 - x2 + ax3
= 1
x1 + 3x2 + 2x3
x12x2+2x3
= -b
= 4
1 For what values of a, b will the system be inconsistent?
2 For what values of a, b will the system have only one solution?
For what values of a, b will the saystem have infinitely many solutions?
Question 5. Let A, B, C ben x n-matrices, S is nonsigular. If A = S-1 BS, show that
det (A) = det (B)
Question 6. For what values of k is the matrix A = (2- k
-1
-1
2) singular?
k
Chapter 4 Solutions
Intermediate Algebra (8th Edition)
Ch. 4.1 - Verbal and Writing Skills, Exercises 1-4 Explain...Ch. 4.1 - Verbal and Writing Skills, Exercises 1-4 Explain...Ch. 4.1 - Verbal and Writing Skills, Exercises 1-4
3. How...Ch. 4.1 - Verbal and Writing Skills, Exercises 1-4 When you...Ch. 4.1 - Determine whether the given ordered pair is a...Ch. 4.1 - Prob. 6ECh. 4.1 - Solve the system of equations by graphing. Check...Ch. 4.1 - Prob. 8ECh. 4.1 - Solve the system of equations by graphing. Check...Ch. 4.1 - Solve the system of equations by graphing Check...
Ch. 4.1 - Solve the system of equations by graphing. Check...Ch. 4.1 - Solve the system of equations by graphing. Check...Ch. 4.1 - Solve the system of equations by graphing. Check...Ch. 4.1 - Solve the system of equations by graphing. Check...Ch. 4.1 - Find the solution to each system by the...Ch. 4.1 - Find the solution to each system by the...Ch. 4.1 - Find the solution to each system by the...Ch. 4.1 - Prob. 18ECh. 4.1 - Find the solution to each system by the...Ch. 4.1 - Prob. 20ECh. 4.1 - Find the solution to each system by the...Ch. 4.1 - Find the solution to each system by the...Ch. 4.1 - Find the solution to each system by the addition...Ch. 4.1 - Prob. 24ECh. 4.1 - Find the solution to each system by the addition...Ch. 4.1 - Prob. 26ECh. 4.1 - Find the solution to each system by the addition...Ch. 4.1 - Find the solution to each system by the addition...Ch. 4.1 - Find the solution to each system by the addition...Ch. 4.1 - Prob. 30ECh. 4.1 - Prob. 31ECh. 4.1 - Prob. 32ECh. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - Prob. 35ECh. 4.1 - Prob. 36ECh. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - Prob. 39ECh. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - If possible, solve each system of equations. Use...Ch. 4.1 - Prob. 45ECh. 4.1 - Prob. 46ECh. 4.1 - Prob. 47ECh. 4.1 - Prob. 48ECh. 4.1 - If possible, solve each system of equations. Use...Ch. 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. 1QQCh. 4.1 - Prob. 2QQCh. 4.1 - Prob. 3QQCh. 4.1 - Prob. 4QQCh. 4.2 - 1. Determine whether (2, 1, —4) is a solution to...Ch. 4.2 - Determine whether ( − 2 , 3 , 0 ) is a solution to...Ch. 4.2 - Prob. 3ECh. 4.2 - Prob. 4ECh. 4.2 - Prob. 5ECh. 4.2 - Prob. 6ECh. 4.2 - Prob. 7ECh. 4.2 - Prob. 8ECh. 4.2 - Prob. 9ECh. 4.2 - Prob. 10ECh. 4.2 - Prob. 11ECh. 4.2 - Prob. 12ECh. 4.2 - Solve each system. 2 x + 2 z = − 7 + 3 y 3 2 x + y...Ch. 4.2 - Prob. 14ECh. 4.2 - Prob. 15ECh. 4.2 - Solve each system. − 0.1 a + 0.2 b + 0.3 c = 0.1...Ch. 4.2 - Prob. 17ECh. 4.2 - Find the solution for each system of equations....Ch. 4.2 - Prob. 19ECh. 4.2 - Prob. 20ECh. 4.2 - Prob. 21ECh. 4.2 - Prob. 22ECh. 4.2 - Prob. 23ECh. 4.2 - Prob. 24ECh. 4.2 - Prob. 25ECh. 4.2 - Prob. 26ECh. 4.2 - Prob. 27ECh. 4.2 - Prob. 28ECh. 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 - Prob. 36ECh. 4.2 - Prob. 1QQCh. 4.2 - Prob. 2QQCh. 4.2 - Prob. 3QQCh. 4.2 - Prob. 4QQCh. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Prob. 8ECh. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Prob. 10ECh. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Prob. 12ECh. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Prob. 16ECh. 4.3 - Prob. 17ECh. 4.3 - Prob. 18ECh. 4.3 - Prob. 19ECh. 4.3 - Prob. 20ECh. 4.3 - Prob. 21ECh. 4.3 - Use a system of two linear equations to solve...Ch. 4.3 - Prob. 23ECh. 4.3 - Prob. 24ECh. 4.3 - Prob. 25ECh. 4.3 - Prob. 26ECh. 4.3 - Prob. 27ECh. 4.3 - Prob. 28ECh. 4.3 - Prob. 29ECh. 4.3 - Prob. 30ECh. 4.3 - Prob. 31ECh. 4.3 - Prob. 32ECh. 4.3 - Prob. 33ECh. 4.3 - Prob. 34ECh. 4.3 - Prob. 35ECh. 4.3 - Prob. 1QQCh. 4.3 - Prob. 2QQCh. 4.3 - Prob. 3QQCh. 4.3 - Prob. 4QQCh. 4.4 - Verbal and Writing Skills, Exercises 1-4 In the...Ch. 4.4 - Prob. 2ECh. 4.4 - Verbal and Writing Skills, Exercises 1-4 Stephanie...Ch. 4.4 - Verbal and Writing Skills, Exercises 1-4 John...Ch. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Prob. 8ECh. 4.4 - Prob. 9ECh. 4.4 - Prob. 10ECh. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Prob. 14ECh. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Prob. 16ECh. 4.4 - Prob. 17ECh. 4.4 - Prob. 18ECh. 4.4 - Graph the solution of each of the following...Ch. 4.4 - Prob. 20ECh. 4.4 - Graph the solution of the following systems of...Ch. 4.4 - Prob. 22ECh. 4.4 - Prob. 23ECh. 4.4 - Graph the solution of the following systems of...Ch. 4.4 - Prob. 25ECh. 4.4 - Graph the solution of the following systems of...Ch. 4.4 - Graph the region determined by each of the...Ch. 4.4 - Prob. 28ECh. 4.4 - Hint: In exercises 29 and 30, it the coordinates...Ch. 4.4 - Prob. 30ECh. 4.4 - Prob. 31ECh. 4.4 - Prob. 32ECh. 4.4 - Prob. 33ECh. 4.4 - Prob. 34ECh. 4.4 - Prob. 1QQCh. 4.4 - Prob. 2QQCh. 4.4 - Prob. 3QQCh. 4.4 - Prob. 4QQCh. 4 - Solve the following systems by graphing.
1.
Ch. 4 - Prob. 2RPCh. 4 - Solve the following systems by substitution.
3.
Ch. 4 - Prob. 4RPCh. 4 - Prob. 5RPCh. 4 - Prob. 6RPCh. 4 - Solve the following systems by addition. 7 x − 4 y...Ch. 4 - Prob. 8RPCh. 4 - Prob. 9RPCh. 4 - Prob. 10RPCh. 4 - Prob. 11RPCh. 4 - Prob. 12RPCh. 4 - Prob. 13RPCh. 4 - Prob. 14RPCh. 4 - Prob. 15RPCh. 4 - Prob. 16RPCh. 4 - Prob. 17RPCh. 4 - Prob. 18RPCh. 4 - Prob. 19RPCh. 4 - Prob. 20RPCh. 4 - Prob. 21RPCh. 4 - Prob. 22RPCh. 4 - Prob. 23RPCh. 4 - Prob. 24RPCh. 4 - Prob. 25RPCh. 4 - Prob. 26RPCh. 4 - Prob. 27RPCh. 4 - Prob. 28RPCh. 4 - Prob. 29RPCh. 4 - Use a system of linear equations to solve each of...Ch. 4 - Solve by any appropriate method. x − y = 1 5 x + y...Ch. 4 - Prob. 32RPCh. 4 - Prob. 33RPCh. 4 - Prob. 34RPCh. 4 - Prob. 35RPCh. 4 - Prob. 36RPCh. 4 - Prob. 37RPCh. 4 - Prob. 38RPCh. 4 - Prob. 39RPCh. 4 - Prob. 40RPCh. 4 - Prob. 41RPCh. 4 - Prob. 42RPCh. 4 - Prob. 43RPCh. 4 - Prob. 44RPCh. 4 - Prob. 1TCh. 4 - Prob. 2TCh. 4 - Prob. 3TCh. 4 - Prob. 4TCh. 4 - Prob. 5TCh. 4 - Prob. 6TCh. 4 - Prob. 7TCh. 4 - Prob. 8TCh. 4 - Prob. 9TCh. 4 - Prob. 10TCh. 4 - Prob. 11TCh. 4 - Prob. 12TCh. 4 - Prob. 13TCh. 4 - Prob. 14T
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