Question

I need to know how to do this and an awnser
15 is the one NEEDED ASP

Answer 1

x = 3

CD = 21

CE = 21

DE = 16

Explanation:

Isosceles triangle is a triangle in which two sides have the same length.

Triangle CDE with ∠D = ∠E so DE is the base

then CD = CE

4x + 9 = 16x - 27

16x - 4x = 9 + 27

12x = 36

x = 3

CD = 4x + 9 = 4(3) + 9 = 21

CE = 16x - 27 = 16(3) - 27 = 21

DE = 7x - 5 = 7(3) - 5 = 16