Question 944586
The  m< WYX = 20, and the m< WYZ =70. I got this by:
4x-8 + 10x = 90
14x - 8 =90
  14x =98
     X=7
m<WYX = 4x-8 = 4(7) -8 = 20
m<WYZ = 10x =10(7) = 70