Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 2 - Section 2.5 - Formulas and Problem Solving - Exercise Set: 36

Answer

Length = 130 m

Work Step by Step

Let width = x Length = 2x – 10 Perimeter = 400 2(length + width) = 400 2(2x-10 + x) = 400 3x – 10 = 200 3x = 210 x = 70 m Length = 2(70) – 10 = 130 m
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