geometry, not sure if i’m right or wrong, if wrong what is the answer and how?

Geometry Not Sure If Im Right Or Wrong If Wrong What Is The Answer And How class=

Answer :

From the figure we can say that KM/KJ = (2x + 5)/(8x - 18) = 1/2

8x - 18 = 2(2x + 5) = 4x + 10

4x = 10 + 18 = 28

x = 28/4 = 7

x = 7

MN = 2x + 5 = 2(7) + 5 = 14 + 5 = 19

Answer:

MN = 19