Algebra: A Combined Approach (4th Edition)

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

Appendix F - Exercise Set: 29

Answer

$4.5$

Work Step by Step

Since the triangles are similar, corresponding sides are in proportion. This means that, $\frac{6}{9}=\frac{3}{x}$ To solve the equation for $x$, we need to cross multiply: $6\times x=3\times9$ $6x=27$ $x=\frac{27}{6}=4.5$ Therefore, the missing length is $4.5$ units.
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