Prealgebra (7th Edition)

Published by Pearson
ISBN 10: 0321955048
ISBN 13: 978-0-32195-504-3

Chapter 6 - Review: 51



Work Step by Step

In similar triangles, the ratio of the lengths of corresponding sides is the same. $\frac{20}{30}=\frac{x}{20}$ $30x=20\times20$ $30x\div30=400\div30$ $x=13\frac{1}{3}$
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