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Isosceles trapezoid ABCD is shown with midsegment EF. If base BC = 17x, base AD = 30x + 12, and EF = 22.5x + 9, what is BC?

A. 34 

B. 51 

C. 68 

D. 85​


Isosceles Trapezoid ABCD Is Shown With Midsegment EF If Base BC 17x Base AD 30x 12 And EF 225x 9 What Is BC A 34 B 51 C 68 D 85 class=

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