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meriva
3 years ago
9

What is the length of CD? In this diagram, AABC ~ AEDC. 20-% c * 7 21​

Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
6 0

Answer:

\frac{BC}{DC}=\frac{AC}{EC}

\frac{20-x}{x} =\frac{21}{7}

\frac{20-x}{x} =3

20-x=3x

4x=20

x=5

So, CD=5

<u>OAmalOHopeO</u>

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