Step-by-step explanation:
( 8x - 7 ) + (3x -11 ) = 180 internal angle between 2 parallel lines
so x = 18
2Y + 23 = 4Y + 8 Alternate angle between 2 parallel lines
so y = 15/2
2y + 23 + 3 sq(z) -5 = 180 supplementary angle
Sub y = 15/2 into the above equation
sq(z) = sqr(152/3)
