Question

Hi can someone assist me with this question and help me solve it?

Answer 1

40°

Explanation:

Given l \\ m,

m∠13 = m∠7 (alternate interior angles)

m∠13+m∠15 = 180° (Sum of angles in a straight line)

`6x+4+(14x-4)=180\\6x+4+14x-4=180\\20x=180\\x=(180)/(20) \\=9\\\\`

Substitute x to find m∠13

m∠13= 6x+4 = 6(9)+4 = 36 + 4 = 40°