The angles below are supplementary. what is the value of x? a pair of supplementary angles is shown. one angle measures 4x + 20, and the other angle measures 40. answers: 5 7.5 15 30

hi!

because the angles are equal, write the values of the angles as an equation, then solve.

4x + 20 = 40

subtract 20 from both sides.

4x + 20 - 20 = 40 - 20

4x = 20

divide by 4 on both sides.

4x/4 = 20/4

x = 5

the answer is a. 5

hope this ! : )

-peredhel

4x=40-20

4x=20

x=5 hope this

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°