.Answer:
A)
y = 60°
B)
x = 11
∡YXW = 82°
∡WXZ = 8°
Explanation:
A)
y, x are complementory angles
then:
x + y = 90
.y = 2x
then:
x + 2x= 90°
3x = 90°
x = 90/3
x = 30
y = 2x
y = 2*30
y = 60°
B)
Angle YXW an angle WXZ are complementory angles:
then:
(7x+5) + (3x-25) = 90°
7x + 3x + 5 - 25 = 90
10x -20 = 90
10x = 90 + 20
10x = 110
x = 110/10
x = 11
then:
7x+5 = 7*11 + 5 = 77 + 5 = 82°
3x - 25 = 3*11 - 25 = 33 - 25 = 8°