Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 1 - Section 1.5 - Problem Solving and Using Formulas - Exercise Set - Page 68: 72

Answer

$h=\dfrac{A-2lw}{2l+2w}$

Work Step by Step

Subtract $2lw$ from both sides to find: $A-2lw=2lh+2wh$ Factor out $h$ on the right side to find: $A-2lw=h(2l+2w)$ Divide by $2l+2w$ on both sides to find: $\dfrac{A-2lw}{2l+2w} = h \\h=\dfrac{A-2lw}{2l+2w}$
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