Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 2 - Solving Equations - 2-5 Literal Equations and Formulas - Practice and Problem-Solving Exercises - Page 112: 31

Answer

7 cm

Work Step by Step

Perimeter = 2 times the length + 2 times the width We know the perimeter and the length, but not the width. Let w stand for width. 2(35) + 2(w) = 84 70 + 2w = 84 - Subtract and move 70 to the right side of the equation. 2w = 14 - Divide both sides by 2. w = 7 The width of the fence is 7 cm.
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