Explanation Given Information: The given pair of equations are 3 x − 10 y = − 21 and 5 x + 4 y = 27 . Calculation: Consider the equations 3 x − 10 y = − 21 and 5 x + 4 y = 27 . Multiply the equation 3 x − 10 y = − 21 by 4 on both the sides, we get, 4 ( 3 x − 10 y ) = 4 ( − 21 ) 12 x − 40 y = − 84 Multiply the equation 5 x + 4 y = 27 by 10 on both the sides, we get, 10 ( 5 x + 4 y ) = 10 ( 27 ) 50 x + 40 y = 270 Now add the two equations as, 12 x − 40 y = − 84 50 x + 40 y = 270 _ 62 x = 186 Divide both sides by 62, x = 186 62 x = 3 Put x = 3 in equation 3 x − 10 y = − 21 to get, 3 x − 10 y = − 21 3 ( 3 ) − 10 y = − 21 10 y = 9 + 21 10 y =

Student Solutions Manual For Ewen/nelson's Elementary Technical Mathematics, 11th

11th Edition

ISBN: 9781285199276

Author: Dale Ewen

Publisher: Cengage Learning

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Chapter 9.2, Problem 40E

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To calculate: The solution set for the pair of equations 3x−10y=−215x+4y=27, If there is no solution then determine whether the pair of lines is parallel or coincide.

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Chapter 9.2, Problem 39E

Chapter 9.2, Problem 41E

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Chapter 9 Solutions

Student Solutions Manual For Ewen/nelson's Elementary Technical Mathematics, 11th

Ch. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 2E Ch. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Prob. 4E Ch. 9.1 - Prob. 5E Ch. 9.1 - Prob. 6E Ch. 9.1 - Prob. 7E Ch. 9.1 - Prob. 8E Ch. 9.1 - Draw the graphs of each pair of linear equations....Ch. 9.1 - Draw the graphs of each pair of linear equations....

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The solution set for the pair of equations 3 x − 10 y = − 21 5 x + 4 y = 27 , If there is no solution then determine whether the pair of lines is parallel or coincide.

Solution Summary: The author calculates the solution set for the pair of equations c3x-10y=-21 5x+4y =27end

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To calculate: The solution set for the pair of equations 3x−10y=−215x+4y=27, If there is no solution then determine whether the pair of lines is parallel or coincide.

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Chapter 9 Solutions