Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 13, Trigonometric Ratios and Functions - 13.1 Use Trigonometry with Right Triangles - 13.1 Exercises - Mixed Review - Page 858: 44


$x=5; y=2$

Work Step by Step

Since we are given two equations $2x-y= 8$ and $3x+4y=23$ Now, multiply the equation $2x-y= 8$ by $4$. we have $8x-4y= 32$ and $3x+4y=23$ After solving, we get $11x=55 \implies x=5$ Then, $3(5)+4y=23$ This implies $ 15+4y=23 \implies y=2$ Hence, $x=5; y=2$
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