Answered by AI, Verified by Human Experts

B

E

>

5

D

3x +5

7x +3

F

C

The length of EF is 11EF is the median of the trapezoid ;EF = 1/2(AD + BC)3x + 5 = 1/2(5 + 7x + 3)3x + 5 = 1/2(7x + 8)2(3x + 5) = 7x + 86x + 10 = 7x + 86x - 7x = 8 - 10-x = -2x = 2To find EF :3(2) + 5EF = 6 + 5EF = 11Hence, length of EF is 11...

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