Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 3 - Equations and Problem Solving - 3.3 - More on Solving Equations and Problem Solving - Problem Set 3.3 - Page 114: 38

Answer

The width of the rectangle is 16 cm

Work Step by Step

The formula for the perimeter of a rectangle is P = 2w + 2l Substitute 80 for P and 24 for l to obtain: 80 = 2 $\times$ w + 2 $\times$ 24 80 = 2w + 48 Subtract 48 from both sides 32 = 2w Divide both sides by 2 16 = w
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