Answer
40 feet
Work Step by Step
$30$, $x$, $x+10$
$30^2+x^2=(x+10)^2$
$900+x^2=x^2+20x+100$
$800 = 20x$
$800/20 = 20x/20$
$40 =x$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 6 - Section 6.7 - Quadratic Equations and Problem Solving - Exercise Set - Page 467: 26
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