Question

What is ED? Sorry I need these for my study guide and I was absent

Answer 1

ED = 8

Explanation:

ΔAED ~ ΔDEC so the corresponding sides are in proportion:

DE/DC = AE/AD

(x+4)/6 = (2x +4)/9

3(x +4) = 2(2x +4) . . . . multiply by 18

3x + 12 = 4x +8 . . . . . . eliminate parentheses

4 = x . . . . . . . . . . . . . . . add -8-3x

ED = x +4 = 4 +4

ED = 8