Answer
L$\approx$8.1
Work Step by Step
$\frac{5}{L}$=$\frac{L-5}{5}$
L$^2$-5L-25=0
L=$\frac{5+\sqrt {-5^2-4(-25)}}{2}$
L=$\frac{5+\sqrt {125}}{2}$
L$\approx$8.1
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 5 - Section 5.1 - Ratios, Rates, and Proportions - Exercises - Page 229: 39a
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