Question

Help pls pls pls pls

Answer 1

12

Explanation:

Fill in the given numbers and solve for BE.

... FD/EF = CD/BE

... 12/9 = 16/BE . . . . . the given numbers

... 12·BE = 9·16 . . . . . multiply by 9·BE ("cross multiply")

... BE = 144/12 = 12 . . divide by 12