Question

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Answer 1

AC = x

CD = 2x

AC + CD = AD

x + 2x = 21

3x = 21

x = 7

Halla CD

2x = 2(7) = 14

Answer 2

Respuesta:

E

Explicación paso a paso:

AC + CD = AD

x + 2x = 21

3x = 21

x = 7

Hallar CD

2x=2(7)=14