Answer
120 ft
Work Step by Step
Pythagorean theorem:
$x^{2}$+$50^{2}$=$(x+10)^{2}$
$x^{2}$+2500=$x^{2}$+20x+100
2400=20x
120=x
Precalculus: Mathematics for Calculus, 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305071751
ISBN 13:
978-1-30507-175-9
Chapter 1 - Section 1.7 - Modeling with Equations - 1.7 Exercises - Page 76: 45
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