Beginning and Intermediate Algebra
Beginning and Intermediate Algebra
5th Edition
ISBN: 9781259616754
Author: Julie Miller, Molly O'Neill, Nancy Hyde
Publisher: McGraw-Hill Education
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Chapter A.5, Problem 56PE

Concept 3: Cramer’s Rule

For Exercises 49-58, solve the system by using Cramer’s rule, if possible. Otherwise, use another method. If a system does not have a unique solution, determine the number of solutions and whether the system is inconsistent or the equations are dependent. (See Example 8.)

4 x + z = 7 y = 2 x + z = 4

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Chapter A Solutions

Beginning and Intermediate Algebra

Ch. A.1 - Factor completely. 1. Ch. A.1 - Prob. 2SPCh. A.1 - Prob. 3SPCh. A.1 - Prob. 4SPCh. A.1 - Factor completely. x y + 2 y + 3 x z + 6 z − x − 2Ch. A.1 - Vocabulary and Key Concepts 1. Given the...Ch. A.1 - Vocabulary and Key Concepts Given the expression...Ch. A.1 - Prob. 3PECh. A.1 - Prob. 4PECh. A.1 - Prob. 5PE
Ch. A.1 - Prob. 6PECh. A.1 - Concept 1: Factoring by Using Substitution For...Ch. A.1 - Concept 1: Factoring by Using Substitution For...Ch. A.1 - Prob. 9PECh. A.1 - Prob. 10PECh. A.1 - Concept 1: Factoring by Using Substitution For...Ch. A.1 - Prob. 12PECh. A.1 - Prob. 13PECh. A.1 - Prob. 14PECh. A.1 - Prob. 15PECh. A.1 - Prob. 16PECh. A.1 - Prob. 17PECh. A.1 - Concept 1: Factoring by Using Substitution For...Ch. A.1 - Prob. 19PECh. A.1 - Prob. 20PECh. A.1 - Prob. 21PECh. A.1 - Prob. 22PECh. A.1 - Concept 2: Factoring 1 Term with 3 Terms For...Ch. A.1 - Prob. 24PECh. A.1 - Prob. 25PECh. A.1 - Prob. 26PECh. A.1 - Prob. 27PECh. A.1 - Prob. 28PECh. A.1 - Prob. 29PECh. A.1 - Prob. 30PECh. A.1 - Prob. 31PECh. A.1 - Prob. 32PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Prob. 34PECh. A.1 - Prob. 35PECh. A.1 - Prob. 36PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Prob. 39PECh. A.1 - Prob. 40PECh. A.1 - Prob. 41PECh. A.1 - Prob. 42PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Prob. 44PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Prob. 46PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Prob. 48PECh. A.1 - Prob. 49PECh. A.1 - Prob. 50PECh. A.1 - Prob. 51PECh. A.1 - Prob. 52PECh. A.1 - Prob. 53PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Prob. 56PECh. A.1 - Prob. 57PECh. A.1 - Prob. 58PECh. A.1 - Prob. 59PECh. A.1 - Prob. 60PECh. A.1 - Prob. 61PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.1 - Prob. 64PECh. A.1 - Prob. 65PECh. A.1 - Prob. 66PECh. A.1 - Prob. 67PECh. A.1 - Concept 3: Additional Strategies and Mixed...Ch. A.2 - Housing prices for five homes in one neighborhood...Ch. A.2 - Prob. 2SPCh. A.2 - Prob. 3SPCh. A.2 - Prob. 4SPCh. A.2 - Prob. 5SPCh. A.2 - Prob. 6SPCh. A.2 - Prob. 7SPCh. A.2 - Prob. 8SPCh. A.2 - Prob. 9SPCh. A.2 - Prob. 1PECh. A.2 - Prob. 2PECh. A.2 - Prob. 3PECh. A.2 - Prob. 4PECh. A.2 - Concept 1: Mean For Exercises 1-7, find the mean...Ch. A.2 - Prob. 6PECh. A.2 - Concept 1: Mean For Exercises 1-7, find the mean...Ch. A.2 - Prob. 8PECh. A.2 - Prob. 9PECh. A.2 - Prob. 10PECh. A.2 - Prob. 11PECh. A.2 - Prob. 12PECh. A.2 - Prob. 13PECh. A.2 - Prob. 14PECh. A.2 - Prob. 15PECh. A.2 - Prob. 16PECh. A.2 - Prob. 17PECh. A.2 - Prob. 18PECh. A.2 - Prob. 19PECh. A.2 - Prob. 20PECh. A.2 - Prob. 21PECh. A.2 - Prob. 22PECh. A.2 - Prob. 23PECh. A.2 - Prob. 24PECh. A.2 - Prob. 25PECh. A.2 - Prob. 26PECh. A.2 - Prob. 27PECh. A.2 - Prob. 28PECh. A.2 - Prob. 29PECh. A.2 - Prob. 30PECh. A.2 - Prob. 31PECh. A.2 - Prob. 32PECh. A.2 - Prob. 33PECh. A.2 - Prob. 34PECh. A.2 - The unemployment rates for nine countries are...Ch. A.2 - Prob. 36PECh. A.2 - Mixed Exercises Six test scores for Jonathan’s...Ch. A.2 - Prob. 38PECh. A.2 - Prob. 39PECh. A.2 - Prob. 40PECh. A.2 - Prob. 41PECh. A.2 - Prob. 42PECh. A.2 - Concept 4: Weighted Mean For Exercises 43-46, use...Ch. A.2 - Prob. 44PECh. A.2 - Prob. 45PECh. A.2 - Concept 4: Weighted Mean For Exercises 43-46, use...Ch. A.2 - Concept 4: Weighted Mean Refer to the table given...Ch. A.2 - Expanding Your Skills There are 20 students...Ch. A.2 - Prob. 49PECh. A.3 - Prob. 1SPCh. A.3 - Prob. 2SPCh. A.3 - Prob. 3SPCh. A.3 - Prob. 4SPCh. A.3 - Prob. 5SPCh. A.3 - Prob. 6SPCh. A.3 - Prob. 7SPCh. A.3 - Prob. 8SPCh. A.3 - Refer to the figure. Assume that lines L 1 and L 2...Ch. A.3 - Prob. 10SPCh. A.3 - For Exercises 10-14, refer to the figure. Find the...Ch. A.3 - Prob. 12SPCh. A.3 - For Exercises 10-14, refer to the figure. Find the...Ch. A.3 - For Exercises 10-14, refer to the figure. Find the...Ch. A.3 - Prob. 1PECh. A.3 - Prob. 2PECh. A.3 - Prob. 3PECh. A.3 - Prob. 4PECh. A.3 - Prob. 5PECh. A.3 - Prob. 6PECh. A.3 - Prob. 7PECh. A.3 - Prob. 8PECh. A.3 - Prob. 9PECh. A.3 - Prob. 10PECh. A.3 - Prob. 11PECh. A.3 - Prob. 12PECh. A.3 - Prob. 13PECh. A.3 - Prob. 14PECh. A.3 - Prob. 15PECh. A.3 - Prob. 16PECh. A.3 - Prob. 17PECh. A.3 - Prob. 18PECh. A.3 - Prob. 19PECh. A.3 - Prob. 20PECh. A.3 - Prob. 21PECh. A.3 - Prob. 22PECh. A.3 - Prob. 23PECh. A.3 - Prob. 24PECh. A.3 - Prob. 25PECh. A.3 - Concept 2: Area For Exercises 13-26, find the...Ch. A.3 - Prob. 27PECh. A.3 - Prob. 28PECh. A.3 - Prob. 29PECh. A.3 - Prob. 30PECh. A.3 - Prob. 31PECh. A.3 - Prob. 32PECh. A.3 - Prob. 33PECh. A.3 - Prob. 34PECh. A.3 - Prob. 35PECh. A.3 - Prob. 36PECh. A.3 - Prob. 37PECh. A.3 - Prob. 38PECh. A.3 - Concept 3: Volume Find the volume of a snow cone...Ch. A.3 - Concept 3: Volume A landscaping supply company has...Ch. A.3 - Mixed Exercises: Perimeter, Area, and Volume A...Ch. A.3 - Prob. 42PECh. A.3 - Prob. 43PECh. A.3 - Prob. 44PECh. A.3 - Mixed Exercises: Perimeter, Area, and...Ch. A.3 - Prob. 46PECh. A.3 - Mixed Exercises: Perimeter, Area, and Volume a. An...Ch. A.3 - Prob. 48PECh. A.3 - Mixed Exercises: Perimeter, Area, and...Ch. A.3 - Prob. 50PECh. A.3 - Mixed Exercises: Perimeter, Area, and Volume Find...Ch. A.3 - Prob. 52PECh. A.3 - Prob. 53PECh. A.3 - Concept 4: Angles For Exercises 53-58, answer true...Ch. A.3 - Prob. 55PECh. A.3 - Prob. 56PECh. A.3 - Prob. 57PECh. A.3 - Prob. 58PECh. A.3 - Prob. 59PECh. A.3 - Prob. 60PECh. A.3 - Prob. 61PECh. A.3 - Prob. 62PECh. A.3 - Prob. 63PECh. A.3 - Prob. 64PECh. A.3 - Prob. 65PECh. A.3 - Prob. 66PECh. A.3 - Concept 4: Angles For Exercise 67-70, the measure...Ch. A.3 - Prob. 68PECh. A.3 - Prob. 69PECh. A.3 - Concept 4: Angles For Exercise 67-70, the measure...Ch. A.3 - Prob. 71PECh. A.3 - Prob. 72PECh. A.3 - Prob. 73PECh. A.3 - Concept 4: Angles For Exercise 71-74, the measure...Ch. A.3 - Prob. 75PECh. A.3 - Prob. 76PECh. A.3 - Prob. 77PECh. A.3 - Prob. 78PECh. A.3 - Prob. 79PECh. A.3 - Prob. 80PECh. A.3 - Prob. 81PECh. A.3 - Prob. 82PECh. A.3 - Prob. 83PECh. A.3 - Prob. 84PECh. A.3 - Prob. 85PECh. A.3 - Prob. 86PECh. A.3 - Prob. 87PECh. A.3 - Concept 5: Triangles For Exercises 85-88, identify...Ch. A.3 - Prob. 89PECh. A.3 - Concept 5: Triangles 90. True or False? If a...Ch. A.3 - Concept 5: Triangles 91. Can a triangle be both a...Ch. A.3 - Concept 5: Triangles 92. Can a triangle be both a...Ch. A.3 - Prob. 93PECh. A.3 - Prob. 94PECh. A.3 - Prob. 95PECh. A.3 - Prob. 96PECh. A.3 - Prob. 97PECh. A.3 - Prob. 98PECh. A.3 - Concept 5: Triangles 99. Refer to the figure. Find...Ch. A.3 - Concept 5: Triangles 100. Refer to the figure....Ch. A.3 - Prob. 101PECh. A.3 - Prob. 102PECh. A.3 - Prob. 103PECh. A.3 - Prob. 104PECh. A.3 - Prob. 105PECh. A.3 - Expanding Your Skills For Exercises 103-106, find...Ch. A.4 - Determine the order of the matrix. 1. Ch. A.4 - Prob. 2SPCh. A.4 - Prob. 3SPCh. A.4 - Prob. 4SPCh. A.4 - Prob. 5SPCh. A.4 - Prob. 6SPCh. A.4 - Prob. 7SPCh. A.4 - Prob. 8SPCh. A.4 - Prob. 9SPCh. A.4 - Solve by using the Gauss-Jordan method. x − 2 y =...Ch. A.4 - Solve by using the Gauss-Jordan method. x + y + z...Ch. A.4 - Solve by using the Gauss-Jordan method. 4 x − 6 y...Ch. A.4 - Solve by using the Gauss-Jordan method. 13. Ch. A.4 - a. A _______ is a rectangular array of numbers....Ch. A.4 - Review Exercises How much 50% acid solution should...Ch. A.4 - Prob. 3PECh. A.4 - Prob. 4PECh. A.4 - Review Exercises For Exercises 3-5, solve the...Ch. A.4 - Prob. 6PECh. A.4 - Prob. 7PECh. A.4 - Prob. 8PECh. A.4 - Prob. 9PECh. A.4 - Prob. 10PECh. A.4 - Prob. 11PECh. A.4 - Prob. 12PECh. A.4 - Prob. 13PECh. A.4 - Prob. 14PECh. A.4 - Prob. 15PECh. A.4 - Concept 1: Introduction to Matrices For Exercises...Ch. A.4 - Concept 1: Introduction to Matrices For Exercises...Ch. A.4 - Concept 1: Introduction to Matrices For Exercises...Ch. A.4 - Prob. 19PECh. A.4 - Prob. 20PECh. A.4 - Prob. 21PECh. A.4 - Prob. 22PECh. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Prob. 30PECh. A.4 - Prob. 31PECh. A.4 - Prob. 32PECh. A.4 - Prob. 33PECh. A.4 - Prob. 34PECh. A.4 - Prob. 35PECh. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Prob. 37PECh. A.4 - Prob. 38PECh. A.4 - Prob. 39PECh. A.4 - Prob. 40PECh. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Prob. 43PECh. A.4 - Prob. 44PECh. A.4 - Prob. 45PECh. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Prob. 47PECh. A.4 - Prob. 48PECh. A.4 - Prob. 49PECh. A.4 - Prob. 50PECh. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Prob. 52PECh. A.4 - Prob. 53PECh. A.4 - Concept 2: Solving Systems of Linear Equations by...Ch. A.4 - Prob. 55PECh. A.4 - Prob. 56PECh. A.4 - Graphing Calculator Exercises For Exercises 57-62,...Ch. A.4 - Graphing Calculator Exercises For Exercises 57-62,...Ch. A.4 - Graphing Calculator Exercises For Exercises 57-62,...Ch. A.4 - Graphing Calculator Exercises For Exercises 57-62,...Ch. A.4 - Graphing Calculator Exercises For Exercises 57-62,...Ch. A.4 - Graphing Calculator Exercises For Exercises 57-62,...Ch. A.5 - Prob. 1SPCh. A.5 - Prob. 2SPCh. A.5 - Prob. 3SPCh. A.5 - Prob. 4SPCh. A.5 - Prob. 5SPCh. A.5 - Prob. 6SPCh. A.5 - Prob. 7SPCh. A.5 - Prob. 8SPCh. A.5 - Prob. 9SPCh. A.5 - Prob. 1PECh. A.5 - Prob. 2PECh. A.5 - Prob. 3PECh. A.5 - Prob. 4PECh. A.5 - Prob. 5PECh. A.5 - Prob. 6PECh. A.5 - Prob. 7PECh. A.5 - Prob. 8PECh. A.5 - Prob. 9PECh. A.5 - Prob. 10PECh. A.5 - Prob. 11PECh. A.5 - Prob. 12PECh. A.5 - Prob. 13PECh. A.5 - Prob. 14PECh. A.5 - Prob. 15PECh. A.5 - Prob. 16PECh. A.5 - Concept 2: Determinant of a Matrix 17. Evaluate...Ch. A.5 - Concept 2: Determinant of a Matrix 18. Evaluate...Ch. A.5 - Concept 2: Determinant of a Matrix 19. When...Ch. A.5 - Prob. 20PECh. A.5 - Prob. 21PECh. A.5 - Prob. 22PECh. A.5 - Prob. 23PECh. A.5 - Prob. 24PECh. A.5 - Prob. 25PECh. A.5 - Prob. 26PECh. A.5 - Prob. 27PECh. A.5 - Prob. 28PECh. A.5 - Prob. 29PECh. A.5 - Prob. 30PECh. A.5 - Prob. 31PECh. A.5 - Concept 3: Cramer’s Rule For Exercises 32-34,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 32-34,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 32-34,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 35-40,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 35-40,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 35-40,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 35-40,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 35-40,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 35-40,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 41-46,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 41-46,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 41-46,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 41-46,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 41-46,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 41-46,...Ch. A.5 - Concept 3: Cramer’s Rule When does Cramer’s rule...Ch. A.5 - Concept 3: Cramer’s Rule 48. How can a system be...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Concept 3: Cramer’s Rule For Exercises 49-58,...Ch. A.5 - Expanding Your Skills For Exercises 59-62, solve...Ch. A.5 - Prob. 60PECh. A.5 - Prob. 61PECh. A.5 - Prob. 62PECh. A.5 - Expanding Your Skills For Exercise 63-64, evaluate...Ch. A.5 - Expanding Your Skills For Exercise 63-64, evaluate...Ch. A.5 - Expanding Your Skills For Exercises 65-66, refer...Ch. A.5 - Expanding Your Skills For Exercises 65-66, refer...Ch. A.5 - Prob. 67PECh. A.5 - Prob. 68PECh. A.5 - Expanding Your Skills A theater charges $80 per...Ch. A.5 - Expanding Your Skills The measure of the largest...Ch. A.5 - Prob. 71PECh. A.5 - Expanding Your Skills 72. During a 1-hr television...
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