Answer
AC=2$\sqrt 6$$\approx$4.9
Work Step by Step
$\frac{AD}{AC}$=$\frac{AC}{DB}$
$\frac{4}{AC}$=$\frac{AC}{6}$
AC$^2$=24
AC=2$\sqrt 6$$\approx$4.9
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 5.6 - Segments Divided Proportionally - Exercises - Page 267: 24
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