The answer is y = 14
Explanation:
AC≅CB, so the triangle is isosceles
So, m∠A = m∠B
m∠A = 50 and m∠A = m∠B, so m∠B = 2x = 50
The sum of all angles in a triangle is 180°
So:
180 = (5y + 10) + 50 + 50
180 = 5y + 10 + 100
180 = 5y + 110
-5y = 110 - 180
-5y = -70
5y = 70
y = 70/5
y = 14
Hope it helps!
