Answer
AC=4.5
Work Step by Step
$\frac{AD+DB}{DB}$=$\frac{AC}{DE}$
$\frac{12}{8}$=$\frac{AC}{3}$
8AC=36
AC=4.5
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 5 - Review Exercises - Page 273: 22
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