Answer:
BAE = 100
Explanation:
BAE and CAD are vertical angles, which means they are equal
4x+20 = 3x+40
Subtract 3x from each side
4x-3x +20 = 3x-3x+40
x+20 = 40
Subtract 20 from each side
x-20=40-20
x = 20
We want to find BAE
BAE = 4x+20
= 4(20)+20
=80+20
= 100