Answer:
50
Step-by-step explanation:
There is 180 degrees in a triangle.
65 + 65 = 130
180 - 130 = 50
If he travels 12km/h for 3 hours then he went 36km in 3hr. The answer is 36km.
Missing check = $412.20 - $331.60 = $80.6
Hope it helps!
The variable a cannot be zero because that would make -9a = zero and 8 divided by zero is indeterminate.