Elementary Geometry for College Students (6th Edition)

Published by Brooks Cole
ISBN 10:
ISBN 13:

Chapter 5 - Review Exercises - Page 263: 31b

Answer

AD=40

Work Step by Step

$\frac{AD+DC}{BC}$=$\frac{BC}{DC}$ $\frac{AD+5}{15}$=$\frac{15}{5}$ AD+5=45 AD=40
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