Two angles are supplementary. if the m∠a is five times the sum of the m∠b plus 7.2°, what is m∠b? need

Definition of supplementary angles:

Two Angles are Supplementary when they add up to 180 degrees. Notice that together they make a straight angle.

m∠A +m∠B =180°(1)

We are given :

m∠A is five times the sum of the m∠B plus 7.2°

m∠A = 5(m∠B +7.2) (2)

Plugging value of angle A from equation (2) in (1),

5(m∠B +7.2) + m∠B =180

5m∠B +36 + m∠B =180

6m∠B =180-36

m∠B = 24°

So angle B is 24 degrees.

14

step-by-step explanation:

14 x 3 = 42