Explanation Given Information: Patrick’s age is 20% of his mother’s age. After twenty years Patrick’s age will be 52% of his mother’s age. Formula used: The elimination method exploits addition principle according to which two terms with same variable in the given equation are made similar in magnitude and opposite in sign by multiplying with a particular number. The equations are then added to eliminate one variable and could be easily solved for another variable. Following are the steps to solve any equation. Step 1: Familiarize Step 2: Translate Step 3: Carry out Step 4: Check the solution Calculation: Familiarize: Let, x be Patrick’s age and y be his mother’s age. Translate: Translate the word problem into equation form. Patrick’s age is 20% of his mother’s age. x = ( 20 % ) ( y ) After twenty years Patrick’s age will be 52% of his mother’s age. x + 20 = ( 20 % ) ( y + 20 ) The systems of equations formed are, x = 20 100 y x + 20 = 52 100 ( y + 20 ) Carry out: Consider the given equations, x = 20 100 y x + 20 = 52 100 ( y + 20 ) The equations can be calculated as follows, Modify the equations by arranging the terms x − 20 100 y = 0 x − 52 100 y = − 48 5 Multiply equation x − 20 100 y = 0 by − 1 . ( − 1 ) ( x − 20 100 y ) = 0 − x + 20 100 y = 0 Add equations − x + 20 100 y = 0 and x − 52 100 y = − 48 5 . − x + 20 100 y = 0 x − 52 100 y = − 48 5 0 x − 32 100 y = − 48 5 ¯ Solving further, − 32 100 y = − 48 5 Divide both sides by − 100 32

Elementary Algebra: Concepts and Applications (10th Edition)

10th Edition

ISBN: 9780134441375

Author: Marvin L. Bittinger, David J. Ellenbogen, Barbara L. Johnson

Publisher: PEARSON

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Question

Chapter 7.3, Problem 72ES

To determine

To calculate: The age of Patrick and his mother if Patrick’s age is 20% of his mother’s age. Twenty years from now, Patrick’s age will be 52% of his mother’s age.

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Chapter 7.3, Problem 71ES

Chapter 7.3, Problem 73ES

Chapter 7 Solutions

Elementary Algebra: Concepts and Applications (10th Edition)

Ch. 7.1 - Prob. 1YT Ch. 7.1 - Prob. 2YT Ch. 7.1 - Prob. 3YT Ch. 7.1 - Prob. 4YT Ch. 7.1 - Prob. 5YT Ch. 7.1 - Prob. 1CYU Ch. 7.1 - Prob. 2CYU Ch. 7.1 - Prob. 3CYU Ch. 7.1 - Prob. 4CYU Ch. 7.1 - Prob. 5CYU

Ch. 7.1 - Prob. 6CYU Ch. 7.1 - Prob. 1ES Ch. 7.1 - Prob. 2ES Ch. 7.1 - Prob. 3ES Ch. 7.1 - Prob. 4ES Ch. 7.1 - Prob. 5ES Ch. 7.1 - Prob. 6ES Ch. 7.1 - Prob. 7ES Ch. 7.1 - Prob. 8ES Ch. 7.1 - Prob. 9ES Ch. 7.1 - Prob. 10ES Ch. 7.1 - Prob. 11ES Ch. 7.1 - Prob. 12ES Ch. 7.1 - Prob. 13ES Ch. 7.1 - Prob. 14ES Ch. 7.1 - Prob. 15ES Ch. 7.1 - Prob. 16ES Ch. 7.1 - Prob. 17ES Ch. 7.1 - Prob. 18ES Ch. 7.1 - Prob. 19ES Ch. 7.1 - Prob. 20ES Ch. 7.1 - Prob. 21ES Ch. 7.1 - Prob. 22ES Ch. 7.1 - Prob. 23ES Ch. 7.1 - Prob. 24ES Ch. 7.1 - Prob. 25ES Ch. 7.1 - Prob. 26ES Ch. 7.1 - Prob. 27ES Ch. 7.1 - Prob. 28ES Ch. 7.1 - Prob. 29ES Ch. 7.1 - Solve each system of equations by graphing. If...Ch. 7.1 - Prob. 31ES Ch. 7.1 - Prob. 32ES Ch. 7.1 - Prob. 33ES Ch. 7.1 - Prob. 34ES Ch. 7.1 - Prob. 35ES Ch. 7.1 - Prob. 36ES Ch. 7.1 - Prob. 37ES Ch. 7.1 - Prob. 38ES Ch. 7.1 - Prob. 39ES Ch. 7.1 - Prob. 40ES Ch. 7.1 - Prob. 41ES Ch. 7.1 - Prob. 42ES Ch. 7.1 - Prob. 43ES Ch. 7.1 - Prob. 44ES Ch. 7.1 - Prob. 45ES Ch. 7.1 - Prob. 46ES Ch. 7.1 - Prob. 47ES Ch. 7.1 - Prob. 48ES Ch. 7.1 - Prob. 49ES Ch. 7.1 - Prob. 50ES Ch. 7.1 - Prob. 51ES Ch. 7.1 - Prob. 52ES Ch. 7.1 - Prob. 53ES Ch. 7.1 - Prob. 54ES Ch. 7.1 - Prob. 55ES Ch. 7.1 - Prob. 56ES Ch. 7.1 - Prob. 57ES Ch. 7.1 - Prob. 58ES Ch. 7.1 - Prob. 59ES Ch. 7.1 - Prob. 60ES Ch. 7.1 - Prob. 61ES Ch. 7.1 - Prob. 62ES Ch. 7.1 - Prob. 64ES Ch. 7.1 - Prob. 65ES Ch. 7.1 - Prob. 1PTMO Ch. 7.1 - Prob. 2PTMO Ch. 7.1 - Prob. 3PTMO Ch. 7.1 - Prob. 4PTMO Ch. 7.1 - Prob. 5PTMO Ch. 7.1 - Prob. 6PTMO Ch. 7.2 - Prob. 1YT Ch. 7.2 - Prob. 2YT Ch. 7.2 - Prob. 3YT Ch. 7.2 - Prob. 4YT Ch. 7.2 - Prob. 5YT Ch. 7.2 - Prob. 1CYU Ch. 7.2 - In the solution of the following system, x=2. What...Ch. 7.2 - Prob. 3CYU Ch. 7.2 - Prob. 4CYU Ch. 7.2 - Prob. 1ES Ch. 7.2 - Prob. 2ES Ch. 7.2 - Prob. 3ES Ch. 7.2 - Classify each of the following statements as...Ch. 7.2 - Prob. 5ES Ch. 7.2 - Prob. 6ES Ch. 7.2 - Prob. 7ES Ch. 7.2 - Prob. 8ES Ch. 7.2 - Prob. 9ES Ch. 7.2 - Prob. 10ES Ch. 7.2 - Prob. 11ES Ch. 7.2 - Prob. 12ES Ch. 7.2 - Prob. 13ES Ch. 7.2 - Prob. 14ES Ch. 7.2 - Prob. 15ES Ch. 7.2 - Prob. 16ES Ch. 7.2 - Prob. 17ES Ch. 7.2 - Prob. 18ES Ch. 7.2 - Prob. 19ES Ch. 7.2 - Prob. 20ES Ch. 7.2 - Prob. 21ES Ch. 7.2 - Prob. 22ES Ch. 7.2 - Prob. 23ES Ch. 7.2 - Prob. 24ES Ch. 7.2 - Prob. 25ES Ch. 7.2 - Prob. 26ES Ch. 7.2 - Prob. 27ES Ch. 7.2 - Prob. 28ES Ch. 7.2 - Prob. 29ES Ch. 7.2 - Prob. 30ES Ch. 7.2 - Prob. 31ES Ch. 7.2 - Prob. 32ES Ch. 7.2 - Prob. 33ES Ch. 7.2 - Prob. 34ES Ch. 7.2 - Prob. 35ES Ch. 7.2 - Prob. 36ES Ch. 7.2 - Prob. 37ES Ch. 7.2 - Prob. 38ES Ch. 7.2 - Prob. 39ES Ch. 7.2 - Prob. 40ES Ch. 7.2 - Prob. 41ES Ch. 7.2 - Prob. 42ES Ch. 7.2 - Prob. 43ES Ch. 7.2 - Prob. 44ES Ch. 7.2 - Prob. 45ES Ch. 7.2 - Prob. 46ES Ch. 7.2 - Prob. 47ES Ch. 7.2 - Prob. 48ES Ch. 7.2 - Prob. 49ES Ch. 7.2 - Prob. 50ES Ch. 7.2 - Prob. 51ES Ch. 7.2 - Prob. 52ES Ch. 7.2 - Prob. 53ES Ch. 7.2 - Prob. 54ES Ch. 7.2 - Prob. 55ES Ch. 7.2 - Music Streaming. The total number of on-demand...Ch. 7.2 - Prob. 57ES Ch. 7.2 - Prob. 58ES Ch. 7.2 - Prob. 59ES Ch. 7.2 - Prob. 60ES Ch. 7.2 - Prob. 61ES Ch. 7.2 - Prob. 62ES Ch. 7.2 - Prob. 63ES Ch. 7.2 - Prob. 64ES Ch. 7.2 - Prob. 65ES Ch. 7.2 - Prob. 66ES Ch. 7.2 - Prob. 67ES Ch. 7.2 - Prob. 68ES Ch. 7.2 - Prob. 69ES Ch. 7.2 - Prob. 70ES Ch. 7.2 - Prob. 71ES Ch. 7.2 - Prob. 72ES Ch. 7.2 - Prob. 73ES Ch. 7.2 - Prob. 74ES Ch. 7.2 - Prob. 75ES Ch. 7.2 - Prob. 76ES Ch. 7.2 - Prob. 1QQ Ch. 7.2 - Prob. 2QQ Ch. 7.2 - Prob. 3QQ Ch. 7.2 - Prob. 4QQ Ch. 7.2 - Prob. 5QQ Ch. 7.2 - Prob. 1PTMO Ch. 7.2 - Prob. 2PTMO Ch. 7.2 - Prob. 3PTMO Ch. 7.2 - Prob. 4PTMO Ch. 7.3 - Prob. 1YT Ch. 7.3 - Prob. 2YT Ch. 7.3 - Prob. 3YT Ch. 7.3 - Prob. 4YT Ch. 7.3 - Prob. 5YT Ch. 7.3 - Prob. 6YT Ch. 7.3 - Prob. 7YT Ch. 7.3 - Prob. 8YT Ch. 7.3 - Prob. 1CYU Ch. 7.3 - Prob. 2CYU Ch. 7.3 - Prob. 3CYU Ch. 7.3 - Prob. 1E Ch. 7.3 - Prob. 2E Ch. 7.3 - Prob. 3E Ch. 7.3 - Prob. 4E Ch. 7.3 - Prob. 5E Ch. 7.3 - Prob. 6E Ch. 7.3 - Prob. 1ES Ch. 7.3 - Prob. 2ES Ch. 7.3 - Prob. 3ES Ch. 7.3 - Prob. 4ES Ch. 7.3 - Prob. 5ES Ch. 7.3 - Prob. 6ES Ch. 7.3 - Prob. 7ES Ch. 7.3 - Prob. 8ES Ch. 7.3 - Prob. 9ES Ch. 7.3 - Prob. 10ES Ch. 7.3 - Prob. 11ES Ch. 7.3 - Prob. 12ES Ch. 7.3 - Prob. 13ES Ch. 7.3 - Prob. 14ES Ch. 7.3 - Prob. 15ES Ch. 7.3 - Prob. 16ES Ch. 7.3 - Prob. 17ES Ch. 7.3 - Prob. 18ES Ch. 7.3 - Prob. 19ES Ch. 7.3 - Prob. 20ES Ch. 7.3 - Prob. 21ES Ch. 7.3 - Prob. 22ES Ch. 7.3 - Prob. 23ES Ch. 7.3 - Prob. 24ES Ch. 7.3 - Prob. 25ES Ch. 7.3 - Prob. 26ES Ch. 7.3 - Prob. 27ES Ch. 7.3 - Prob. 28ES Ch. 7.3 - Prob. 29ES Ch. 7.3 - Prob. 30ES Ch. 7.3 - Prob. 31ES Ch. 7.3 - Prob. 32ES Ch. 7.3 - Prob. 33ES Ch. 7.3 - Prob. 34ES Ch. 7.3 - Prob. 35ES Ch. 7.3 - Prob. 36ES Ch. 7.3 - Prob. 37ES Ch. 7.3 - Prob. 38ES Ch. 7.3 - Prob. 39ES Ch. 7.3 - Prob. 40ES Ch. 7.3 - Solve. 41. Car Rentals. The University of...Ch. 7.3 - Prob. 42ES Ch. 7.3 - Prob. 43ES Ch. 7.3 - Prob. 44ES Ch. 7.3 - Prob. 45ES Ch. 7.3 - Prob. 46ES Ch. 7.3 - Prob. 47ES Ch. 7.3 - Prob. 48ES Ch. 7.3 - Prob. 49ES Ch. 7.3 - Prob. 50ES Ch. 7.3 - Prob. 51ES Ch. 7.3 - Gardening. Patrice has 108 ft of fencing for a...Ch. 7.3 - Prob. 53ES Ch. 7.3 - Prob. 54ES Ch. 7.3 - Prob. 55ES Ch. 7.3 - Prob. 56ES Ch. 7.3 - Prob. 57ES Ch. 7.3 - Prob. 58ES Ch. 7.3 - Prob. 59ES Ch. 7.3 - Prob. 60ES Ch. 7.3 - Prob. 61ES Ch. 7.3 - Prob. 62ES Ch. 7.3 - Prob. 63ES Ch. 7.3 - Prob. 64ES Ch. 7.3 - Prob. 65ES Ch. 7.3 - Prob. 66ES Ch. 7.3 - Prob. 67ES Ch. 7.3 - Prob. 68ES Ch. 7.3 - Prob. 69ES Ch. 7.3 - Prob. 70ES Ch. 7.3 - 71. Caged Rabbits and Pheasants. Several ancient...Ch. 7.3 - Prob. 72ES Ch. 7.3 - Prob. 73ES Ch. 7.3 - Prob. 74ES Ch. 7.3 - Prob. 1QQ Ch. 7.3 - Prob. 2QQ Ch. 7.3 - Prob. 3QQ Ch. 7.3 - Prob. 4QQ Ch. 7.3 - Prob. 5QQ Ch. 7.3 - Prob. 1PTMO Ch. 7.3 - Prob. 2PTMO Ch. 7.3 - Prob. 3PTMO Ch. 7.3 - Prob. 4PTMO Ch. 7.3 - Prob. 5PTMO Ch. 7.3 - Prob. 6PTMO Ch. 7.4 - 1. In a recent game, Kristaps Porzingis of the New...Ch. 7.4 - Prob. 2YT Ch. 7.4 - Refer to Example 3. The Roasted Bean uses the same...Ch. 7.4 - Prob. 4YT Ch. 7.4 - Prob. 1CYU Ch. 7.4 - Prob. 2CYU Ch. 7.4 - Prob. 3CYU Ch. 7.4 - Prob. 4CYU Ch. 7.4 - Prob. 5CYU Ch. 7.4 - Prob. 1ES Ch. 7.4 - Prob. 2ES Ch. 7.4 - Prob. 3ES Ch. 7.4 - Prob. 4ES Ch. 7.4 - Prob. 5ES Ch. 7.4 - Prob. 6ES Ch. 7.4 - Prob. 7ES Ch. 7.4 - Prob. 8ES Ch. 7.4 - Solve. Use the five steps for problem solving....Ch. 7.4 - Prob. 10ES Ch. 7.4 - Prob. 11ES Ch. 7.4 - Prob. 12ES Ch. 7.4 - Prob. 13ES Ch. 7.4 - Prob. 14ES Ch. 7.4 - Prob. 15ES Ch. 7.4 - Prob. 16ES Ch. 7.4 - Prob. 17ES Ch. 7.4 - Zoo Admissions. The Bronx Zoo charges an admission...Ch. 7.4 - Prob. 19ES Ch. 7.4 - Solve. Use the five steps for problem solving....Ch. 7.4 - Prob. 21ES Ch. 7.4 - Prob. 22ES Ch. 7.4 - Prob. 23ES Ch. 7.4 - Prob. 24ES Ch. 7.4 - Prob. 25ES Ch. 7.4 - Prob. 26ES Ch. 7.4 - Prob. 27ES Ch. 7.4 - Prob. 28ES Ch. 7.4 - Prob. 29ES Ch. 7.4 - Prob. 30ES Ch. 7.4 - Prob. 31ES Ch. 7.4 - Prob. 32ES Ch. 7.4 - Prob. 33ES Ch. 7.4 - Prob. 34ES Ch. 7.4 - Prob. 35ES Ch. 7.4 - Prob. 36ES Ch. 7.4 - Aromatherapy. Mallory has a bottle of Calm Morning...Ch. 7.4 - Prob. 38ES Ch. 7.4 - Nutrition. New England Natural Bakers Muesli gets...Ch. 7.4 - Prob. 40ES Ch. 7.4 - Prob. 41ES Ch. 7.4 - Prob. 42ES Ch. 7.4 - Prob. 43ES Ch. 7.4 - Prob. 44ES Ch. 7.4 - Prob. 45ES Ch. 7.4 - Prob. 46ES Ch. 7.4 - Prob. 47ES Ch. 7.4 - Prob. 48ES Ch. 7.4 - Prob. 49ES Ch. 7.4 - Prob. 50ES Ch. 7.4 - Prob. 51ES Ch. 7.4 - Prob. 52ES Ch. 7.4 - Prob. 53ES Ch. 7.4 - Prob. 54ES Ch. 7.4 - Prob. 55ES Ch. 7.4 - Prob. 56ES Ch. 7.4 - Prob. 57ES Ch. 7.4 - Prob. 58ES Ch. 7.4 - Prob. 59ES Ch. 7.4 - Prob. 60ES Ch. 7.4 - Prob. 61ES Ch. 7.4 - Prob. 62ES Ch. 7.4 - Prob. 63ES Ch. 7.4 - Prob. 1QQ Ch. 7.4 - Prob. 2QQ Ch. 7.4 - Prob. 3QQ Ch. 7.4 - Prob. 4QQ Ch. 7.4 - Prob. 5QQ Ch. 7.4 - Prob. 1PTMO Ch. 7.4 - Prob. 2PTMO Ch. 7.4 - Prob. 3PTMO Ch. 7.4 - Prob. 4PTMO Ch. 7.4 - Prob. 1MCR Ch. 7.4 - Prob. 2MCR Ch. 7.4 - Prob. 3MCR Ch. 7.4 - Prob. 4MCR Ch. 7.4 - Prob. 5MCR Ch. 7.4 - Prob. 6MCR Ch. 7.4 - Prob. 7MCR Ch. 7.4 - Prob. 8MCR Ch. 7.4 - Prob. 9MCR Ch. 7.4 - Prob. 10MCR Ch. 7.4 - Prob. 11MCR Ch. 7.4 - Prob. 12MCR Ch. 7.4 - Prob. 13MCR Ch. 7.4 - Prob. 14MCR Ch. 7.4 - Prob. 15MCR Ch. 7.4 - Prob. 16MCR Ch. 7.4 - Prob. 17MCR Ch. 7.4 - Prob. 18MCR Ch. 7.4 - Prob. 19MCR Ch. 7.4 - Prob. 20MCR Ch. 7.5 - 1. Graph: y > 2x – 3. Ch. 7.5 - Prob. 2YT Ch. 7.5 - Prob. 3YT Ch. 7.5 - Prob. 4YT Ch. 7.5 - Prob. 1CYU Ch. 7.5 - Prob. 2CYU Ch. 7.5 - Prob. 3CYU Ch. 7.5 - Prob. 4CYU Ch. 7.5 - Prob. 5CYU Ch. 7.5 - Prob. 6CYU Ch. 7.5 - Prob. 1ES Ch. 7.5 - Prob. 2ES Ch. 7.5 - Prob. 3ES Ch. 7.5 - Prob. 4ES Ch. 7.5 - Prob. 5ES Ch. 7.5 - Prob. 6ES Ch. 7.5 - Prob. 7ES Ch. 7.5 - Prob. 8ES Ch. 7.5 - Prob. 9ES Ch. 7.5 - Prob. 10ES Ch. 7.5 - Prob. 11ES Ch. 7.5 - Prob. 12ES Ch. 7.5 - Prob. 13ES Ch. 7.5 - Prob. 14ES Ch. 7.5 - Prob. 15ES Ch. 7.5 - Prob. 16ES Ch. 7.5 - Prob. 17ES Ch. 7.5 - Graph on a plane. 18. Ch. 7.5 - Prob. 19ES Ch. 7.5 - Prob. 20ES Ch. 7.5 - Prob. 21ES Ch. 7.5 - Prob. 22ES Ch. 7.5 - Prob. 23ES Ch. 7.5 - Prob. 24ES Ch. 7.5 - Prob. 25ES Ch. 7.5 - Prob. 26ES Ch. 7.5 - Prob. 27ES Ch. 7.5 - Prob. 28ES Ch. 7.5 - Prob. 29ES Ch. 7.5 - Prob. 30ES Ch. 7.5 - Prob. 31ES Ch. 7.5 - Prob. 32ES Ch. 7.5 - Prob. 33ES Ch. 7.5 - Prob. 34ES Ch. 7.5 - Prob. 35ES Ch. 7.5 - Prob. 36ES Ch. 7.5 - Prob. 37ES Ch. 7.5 - Prob. 38ES Ch. 7.5 - Prob. 39ES Ch. 7.5 - Prob. 40ES Ch. 7.5 - Prob. 41ES Ch. 7.5 - Prob. 42ES Ch. 7.5 - Prob. 43ES Ch. 7.5 - Prob. 44ES Ch. 7.5 - Prob. 45ES Ch. 7.5 - Prob. 46ES Ch. 7.5 - Prob. 47ES Ch. 7.5 - Prob. 48ES Ch. 7.5 - Prob. 49ES Ch. 7.5 - Prob. 50ES Ch. 7.5 - Prob. 51ES Ch. 7.5 - Prob. 52ES Ch. 7.5 - Prob. 53ES Ch. 7.5 - Prob. 54ES Ch. 7.5 - Prob. 55ES Ch. 7.5 - Prob. 56ES Ch. 7.5 - Prob. 1QQ Ch. 7.5 - Prob. 2QQ Ch. 7.5 - Prob. 3QQ Ch. 7.5 - Prob. 4QQ Ch. 7.5 - Prob. 5QQ Ch. 7.5 - Prob. 1PTMO Ch. 7.5 - Prob. 2PTMO Ch. 7.5 - Prob. 3PTMO Ch. 7.6 - 1. Graph the solutions of the system Ch. 7.6 - Prob. 2YT Ch. 7.6 - Prob. 3YT Ch. 7.6 - Prob. 1CYU Ch. 7.6 - Prob. 2CYU Ch. 7.6 - Prob. 3CYU Ch. 7.6 - Prob. 4CYU Ch. 7.6 - Prob. 5CYU Ch. 7.6 - Prob. 6CYU Ch. 7.6 - Prob. 7CYU Ch. 7.6 - Prob. 8CYU Ch. 7.6 - Prob. 1ES Ch. 7.6 - Prob. 2ES Ch. 7.6 - Prob. 3ES Ch. 7.6 - Prob. 4ES Ch. 7.6 - Prob. 5ES Ch. 7.6 - Prob. 6ES Ch. 7.6 - Prob. 7ES Ch. 7.6 - Prob. 8ES Ch. 7.6 - Prob. 9ES Ch. 7.6 - Prob. 10ES Ch. 7.6 - Prob. 11ES Ch. 7.6 - Prob. 12ES Ch. 7.6 - Prob. 13ES Ch. 7.6 - Prob. 14ES Ch. 7.6 - Prob. 15ES Ch. 7.6 - Prob. 16ES Ch. 7.6 - Prob. 17ES Ch. 7.6 - Graph the solutions of each system. 18. Ch. 7.6 - Prob. 19ES Ch. 7.6 - Prob. 20ES Ch. 7.6 - Prob. 21ES Ch. 7.6 - Prob. 22ES Ch. 7.6 - Prob. 23ES Ch. 7.6 - Prob. 24ES Ch. 7.6 - Prob. 25ES Ch. 7.6 - Prob. 26ES Ch. 7.6 - Prob. 27ES Ch. 7.6 - Prob. 28ES Ch. 7.6 - Prob. 29ES Ch. 7.6 - Prob. 30ES Ch. 7.6 - Prob. 31ES Ch. 7.6 - Prob. 32ES Ch. 7.6 - Prob. 33ES Ch. 7.6 - Prob. 34ES Ch. 7.6 - Prob. 35ES Ch. 7.6 - Prob. 36ES Ch. 7.6 - Prob. 37ES Ch. 7.6 - Prob. 38ES Ch. 7.6 - Prob. 39ES Ch. 7.6 - Prob. 40ES Ch. 7.6 - Prob. 41ES Ch. 7.6 - Prob. 42ES Ch. 7.6 - Prob. 43ES Ch. 7.6 - Prob. 44ES Ch. 7.6 - Prob. 45ES Ch. 7.6 - Prob. 46ES Ch. 7.6 - Prob. 1QQ Ch. 7.6 - Prob. 2QQ Ch. 7.6 - Prob. 3QQ Ch. 7.6 - Prob. 4QQ Ch. 7.6 - Prob. 5QQ Ch. 7.6 - Prob. 1PTMO Ch. 7.6 - Prob. 2PTMO Ch. 7.6 - Prob. 3PTMO Ch. 7.6 - Prob. 4PTMO Ch. 7.6 - Prob. 5PTMO Ch. 7.7 - If y varies directly as x, and y=3 when x=15, find...Ch. 7.7 - Prob. 2YT Ch. 7.7 - Prob. 3YT Ch. 7.7 - Prob. 4YT Ch. 7.7 - Prob. 5YT Ch. 7.7 - Prob. 1CYU Ch. 7.7 - Prob. 2CYU Ch. 7.7 - Prob. 3CYU Ch. 7.7 - Determine whether each equation represents direct...Ch. 7.7 - Prob. 5CYU Ch. 7.7 - Prob. 6CYU Ch. 7.7 - Prob. 1ES Ch. 7.7 - Prob. 2ES Ch. 7.7 - Prob. 3ES Ch. 7.7 - Prob. 4ES Ch. 7.7 - Prob. 5ES Ch. 7.7 - Prob. 6ES Ch. 7.7 - Prob. 7ES Ch. 7.7 - Prob. 8ES Ch. 7.7 - Prob. 9ES Ch. 7.7 - Prob. 10ES Ch. 7.7 - Prob. 11ES Ch. 7.7 - Prob. 12ES Ch. 7.7 - Prob. 13ES Ch. 7.7 - Prob. 14ES Ch. 7.7 - Prob. 15ES Ch. 7.7 - Prob. 16ES Ch. 7.7 - Prob. 17ES Ch. 7.7 - For each of the following, find an equation of...Ch. 7.7 - Prob. 19ES Ch. 7.7 - Prob. 20ES Ch. 7.7 - Prob. 21ES Ch. 7.7 - Prob. 22ES Ch. 7.7 - Prob. 23ES Ch. 7.7 - Prob. 24ES Ch. 7.7 - Prob. 25ES Ch. 7.7 - Prob. 26ES Ch. 7.7 - Prob. 27ES Ch. 7.7 - Prob. 28ES Ch. 7.7 - Prob. 29ES Ch. 7.7 - Prob. 30ES Ch. 7.7 - Prob. 31ES Ch. 7.7 - Prob. 32ES Ch. 7.7 - Prob. 33ES Ch. 7.7 - Prob. 34ES Ch. 7.7 - Prob. 35ES Ch. 7.7 - Prob. 36ES Ch. 7.7 - Prob. 37ES Ch. 7.7 - Prob. 38ES Ch. 7.7 - Prob. 39ES Ch. 7.7 - Prob. 40ES Ch. 7.7 - Prob. 41ES Ch. 7.7 - Prob. 42ES Ch. 7.7 - Prob. 43ES Ch. 7.7 - Prob. 44ES Ch. 7.7 - Prob. 45ES Ch. 7.7 - Prob. 46ES Ch. 7.7 - Prob. 47ES Ch. 7.7 - Prob. 48ES Ch. 7.7 - Prob. 49ES Ch. 7.7 - Prob. 50ES Ch. 7.7 - Prob. 51ES Ch. 7.7 - Prob. 52ES Ch. 7.7 - Prob. 53ES Ch. 7.7 - Prob. 54ES Ch. 7.7 - Prob. 55ES Ch. 7.7 - Prob. 56ES Ch. 7.7 - Prob. 57ES Ch. 7.7 - Prob. 58ES Ch. 7.7 - Prob. 59ES Ch. 7.7 - Research. Find examples that use the phrases...Ch. 7.7 - Prob. 1QQ Ch. 7.7 - Prob. 2QQ Ch. 7.7 - 3. For an office reception, Mariah wants to...Ch. 7.7 - 4. Graph: [7.5] Ch. 7.7 - Prob. 5QQ Ch. 7.7 - Prob. 1PTMO Ch. 7.7 - Prob. 2PTMO Ch. 7.7 - Prob. 3PTMO Ch. 7.7 - Prob. 4PTMO Ch. 7.7 - Prob. 5PTMO Ch. 7.7 - Prob. 6PTMO Ch. 7 - Use after Section 7.6. Match each equation or...Ch. 7 - Prob. 2RVS Ch. 7 - Prob. 3RVS Ch. 7 - Prob. 4RVS Ch. 7 - Prob. 5RVS Ch. 7 - Prob. 6RVS Ch. 7 - Prob. 7RVS Ch. 7 - yx3,3xy1 Ch. 7 - Prob. 9RVS Ch. 7 - Prob. 10RVS Ch. 7 - Prob. 1DMC Ch. 7 - Prob. 2DMC Ch. 7 - Prob. 3DMC Ch. 7 - Complete each statement. The solution of a system...Ch. 7 - Complete each statement. When both equations in a...Ch. 7 - Prob. 3RE Ch. 7 - Prob. 4RE Ch. 7 - Complete each statement. To use the elimination...Ch. 7 - Complete each statement. 6. The graph of an...Ch. 7 - Complete each statement. 7. The graph of the...Ch. 7 - Prob. 8RE Ch. 7 - Prob. 9RE Ch. 7 - Prob. 10RE Ch. 7 - Prob. 11RE Ch. 7 - Prob. 12RE Ch. 7 - Prob. 13RE Ch. 7 - Prob. 14RE Ch. 7 - Prob. 15RE Ch. 7 - Prob. 16RE Ch. 7 - Prob. 17RE Ch. 7 - Solve using the substitution method. If there is...Ch. 7 - Prob. 19RE Ch. 7 - Prob. 20RE Ch. 7 - Prob. 21RE Ch. 7 - Prob. 22RE Ch. 7 - Prob. 23RE Ch. 7 - Prob. 24RE Ch. 7 - Prob. 25RE Ch. 7 - Prob. 26RE Ch. 7 - Prob. 27RE Ch. 7 - Prob. 28RE Ch. 7 - Solve.[7.4] Perimeter of a Garden. Hassam is...Ch. 7 - Basketball. In a recent NBA game, Monta Ellis...Ch. 7 - 31. Business. F3 Sales spent $11,150 to purchase...Ch. 7 - Fat Content. Caf Rich instant flavored coffee gets...Ch. 7 - Graph on a plane.[7.5] xy Ch. 7 - Graph on a plane. [7.5] 34. Ch. 7 - Graph on a plane. [7.5] 35. y > -2 Ch. 7 - Graph on a plane. [7.5] 36. Ch. 7 - Graph on a plane. [7.5] 2x+y1 Ch. 7 - Graph on a plane.[7.5] x 4 Ch. 7 - Graph the solutions of each system. [7.6] 39. Ch. 7 - Graph the solutions of each system.[7.6] xy2,x+y1 Ch. 7 - 41. If y varies directly as x, and y = 81 when x =...Ch. 7 - 42. Cubicle Space. The size of a cubicle c in an...Ch. 7 - Explain why any solution of a system of equations...Ch. 7 - Nigel sketches the boundary lines of a system of...Ch. 7 - Prob. 45RE Ch. 7 - Prob. 46RE Ch. 7 - Prob. 47RE Ch. 7 - 48. For a two-digit number, the sum of the ones...Ch. 7 - An administrative assistant agrees to a...Ch. 7 - 1. Determine whether (3, −2) is a solution of the...Ch. 7 - Solve by graphing. If there is no solution or an...Ch. 7 - Prob. 3T Ch. 7 - Prob. 4T Ch. 7 - Prob. 5T Ch. 7 - Prob. 6T Ch. 7 - Prob. 7T Ch. 7 - Prob. 8T Ch. 7 - Solve using any appropriate method. If there is no...Ch. 7 - Prob. 10T Ch. 7 - Solve. Complementary Angles. Two angles are...Ch. 7 - Solve. Cooking. A chef has one vinaigrette that is...Ch. 7 - Solve. Taxi Fares. A New York City taxi recently...Ch. 7 - Graph on a plane. 14. y > x - 1 Ch. 7 - Graph on a plane. 2xy4 Ch. 7 - Graph on a plane. 16. Ch. 7 - Graph the solutions of each system. 17. Ch. 7 - Graph the solutions of each system. 18. Ch. 7 - If y varies inversely as x, and y = 9 when x = 2,...Ch. 7 - 20. Hospital Costs. A hospital’s linen cost varies...Ch. 7 - You are in line at a ticket window. There are two...Ch. 7 - 22. Graph on a plane: Ch. 7 - Find the numbers C and D such that (-2, 3) is a...Ch. 7 - Evaluate 9t6t3. for t=2 [1.8]Ch. 7 - Prob. 2CR Ch. 7 - Prob. 3CR Ch. 7 - Prob. 4CR Ch. 7 - Prob. 5CR Ch. 7 - Prob. 6CR Ch. 7 - Prob. 7CR Ch. 7 - Prob. 8CR Ch. 7 - Prob. 9CR Ch. 7 - Prob. 10CR Ch. 7 - Prob. 11CR Ch. 7 - Prob. 12CR Ch. 7 - Solve each formula. [2.3] 13. Ch. 7 - Solve each formula. [2.3] 14. Ch. 7 - Prob. 15CR Ch. 7 - Prob. 16CR Ch. 7 - Add or subtract, as indicated, to form an...Ch. 7 - Prob. 18CR Ch. 7 - Prob. 19CR Ch. 7 - Prob. 20CR Ch. 7 - Prob. 21CR Ch. 7 - Prob. 22CR Ch. 7 - Prob. 23CR Ch. 7 - Prob. 24CR Ch. 7 - Prob. 25CR Ch. 7 - Prob. 26CR Ch. 7 - Prob. 27CR Ch. 7 - Prob. 28CR Ch. 7 - Prob. 29CR Ch. 7 - Prob. 30CR Ch. 7 - Prob. 31CR Ch. 7 - Prob. 32CR Ch. 7 - Prob. 33CR Ch. 7 - Prob. 34CR Ch. 7 - Prob. 35CR Ch. 7 - Graph. x2y [7.5]Ch. 7 - Graph. 37. [7.6] Ch. 7 - 38. Find the x-intercept and the y-intercept of...Ch. 7 - Write the slope-intercept equation for the line...Ch. 7 - Prob. 40CR Ch. 7 - Prob. 41CR Ch. 7 - Solve. Each nurse practitioner at the Midway...Ch. 7 - Solve. 43. A snowmobile is traveling 40 mph faster...Ch. 7 - Solve. Tia and Avery live next door to each other...Ch. 7 - Solve. Calls from the United States to Egypt made...Ch. 7 - Solve. 46. A newspaper uses self-employed...Ch. 7 - Solve t=pxqx for x.[2.3]Ch. 7 - Write the slope-intercept equation of the line...Ch. 7 - 49. Graph on a plane: . [7.5]

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The age of Patrick and his mother if Patrick’s age is 20% of his mother’s age. Twenty years from now, Patrick’s age will be 52% of his mother’s age.

Solution Summary: The author explains the elimination method, where two terms with the same variable in the given equation are made similar in magnitude and opposite in sign by multiplying with a particular number.

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To calculate: The age of Patrick and his mother if Patrick’s age is 20% of his mother’s age. Twenty years from now, Patrick’s age will be 52% of his mother’s age.

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Chapter 7 Solutions