Someone please help I have like 20min left to turn this in!!!

The angle pair is Supplementary

Step-by-step explanation:

As these two angles together will create a line with their bases, they can be called supplementary.

As these angles are supplementary, we know that the sum of them must be 180 degrees.

This means that we can create the following equation for x:

Now we can solve for x

the solution is h=10 because you add 9 to each side of the equation.

i think it would be 42cm