Question

(3x – 15)º (y + 25)º

105°
Find the value of y.
y=50
y = 80
y = 70
y = 25

Answer 1

y = 50.

Explanation:

The line that its on is 180 degrees. So you know from the angle below that the one with x in it is 105 degrees. 180-105 = 75 degrees.

Once you have that you just do the math.

y + 25 = 75

y = 50