Answer
DC=10.8
Work Step by Step
MN=.5(AB+DC)
9.5=.5(8.2+DC)
9.5=4.1+.5DC
.5DC=5.4
DC=10.8
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 4 - Section 4.4 - The Trapezoid - Exercises - Page 209: 13
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