Answer
$x=13\frac{1}{3}$
Work Step by Step
In similar triangles, the ratio of the lengths of corresponding sides is the same.
$\frac{20}{30}=\frac{x}{20}$
$30x=20\times20$
$30x\div30=400\div30$
$x=13\frac{1}{3}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 6 - Review - Page 461: 51
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