Answer
4.22 feet
Work Step by Step
$I = 445/x^2$
$25 = 445/x^2$
$25x^2 = 445$
$x^2 = 445/25$
$x^2 = 17.8$
$\sqrt {x^2} = \sqrt {17.8}$
$x = 4.219$
Algebra 1
by Hall, Prentice
Published by
Prentice Hall
ISBN 10:
0133500403
ISBN 13:
978-0-13350-040-0
Chapter 11 - Rational Expressions and Functions - 11-7 Graphing Rational Functions - Practice and Problem-Solving Exercises - Page 699: 31
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