Answer:
a = 94
Step-by-step explanation:
if they're supplementary it means they equal to 180
you write an equation of both angles equaling to 180
180 = 2x + 10 + 2x + 2
add the equal terms
180 = 4x + 12
subtract the 12 from 180
168 = 4x
divide by 4
42 = x
then use x in the problem for angle a
2(42) + 10
84 +10 = 94
