Question

In the diagram below of triangle BC D, E is the midpoint of B D and F' is the

midpoint of CD.If EF = 47 - 72, and BC = - 14 + 4s, what is the measure
of EF?

Answer 1

5

Explanation:

EF = 47 - 7x = 1/2 BC = 1/2 * (14+4x)

solve for x

x=6

so EF = 47-7*6 = 5