Question

Please help I would like step by step explanation so I can try to figure out how to do this so I can get a good grade when I take my test!

Answer 1

4

Explanation:

According to the Triangle Midsegment Theorem, a line segment connecting the midpoints of two sides of a triangle will be half the length of the triangle's third side.

NO = ½ JK

15 = ½ (3x + 18)

30 = 3x + 18

12 = 3x

x = 4