Algebra 1

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

Chapter 2 - Solving Equations - 2-8 Proportions and Similar Figures - Practice and Problem-Solving Exercises - Page 134: 17


67.5 ft

Work Step by Step

Write a proportion. $\frac{actual\ fly}{actual\ wingspan}=\frac{model\ fly}{model\ wingspan}\longrightarrow$ substitute given values $\frac{0.2}{0.5}=\frac{27}{w}\longrightarrow$ cross multiply $0.2w=(0.5)(27)\longrightarrow$ multiply $0.2w=13.5\longrightarrow$ divide both sides by 0.2 $0.2w\div0.2=13.5\div0.2\longrightarrow$ divide $w=67.5$
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