Answer
See below
Work Step by Step
We are given $xy=a$ where $a$ is a constant.
Finding a, $a=4\times5=20$
The equation becomes $xy=20$
Substituting $x=10$, we have: $y=\frac{20}{10}=2$
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 8 Rational Functions - Mixed Review of Problem Solving - Lessons 8.1-8.3 - Page 572: 5
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