678.987Answer:
Step-by-step explanation:
the right answer is an=5(3)^(n-1)/2
15/8 19/12 5/2 is the answer for this problem
The answer is 130°
Because it is a circle, the angles have to all add up to 360°. So if you add up the two known angles, and subtract that sum from 360, you will get 130°
