Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 5 - Review Exercises - Page 274: 31a

Answer

DC=16

Work Step by Step

$\frac{DC}{BD}$=$\frac{BD}{AD}$ $\frac{DC}{12}$=$\frac{12}{9}$ 3DC=48 DC=16
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