Answer
DB=16
Work Step by Step
$\frac{DB}{AB}$=$\frac{DE}{AC}$
$\frac{DB}{DB+4}$=$\frac{8}{10}$
10DB=8DB+32
2DB=32
DB=16
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 - Section 5.3 - Proving Triangles Similar - Exercises - Page 242: 25
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