Answer:
m angle A=120° and m angle C=45°
Step-by-step explanation:
15x+45°=180°
15(x+3)=180°
x+3=12°
x=9°
I believe X is equal to 2
I assume there's a plus sign missing above...
Convert to polar coordinates, using

Then the Jacobian is

Then

so the integral can be written as

Let

, so that

.
14.50 x .30 = 4.35
14.50 + 4.35 = $18.85 if that is what you are looking for.

The highest common factor is usually reserved for two or more numbers. The HFC of a single number is, trivially, just the number itself.