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Sagot :

Answer:

30 ft

Step-by-step explanation:

Step-by-step explanation:

In ∆'s ABC and CDE

AngleCAB = Angle CED = 90°

Angle ACB = Angle DCE. (vertically opposite angle)

Angle CDE = Angle CBA. (Alternate Interior Angle)

By AAA congruency

∆ ABC congruent ∆ CDE

By CPCT,

AC = EC

4x - 3 = 2x + 6

2x = 9

x = 9/2

AE = 15 + 15

= 30 ft