Question

Two angles are supplementary. If the m<A is five times the sum of the m<B plus 7.2°, what is m<B?​

Answer 1

Step-by-step explanation:

<A=5(<B+7.2)

<A=5<B+36

<A and<B are suplementary.

therefore

<A+<B=180°

5<B+36°+<B=180°

6<B+36°=180°

6<B=180°-36°

6<B=144°

<B=144/6

<B=24°

therefore

<A=5<B+36

=5*24°+36°

=120°+36°

=156°