Two supplementary angles have the following
measures: and
. What is the equation to solve for
? (1 point)
m∠ABC = 135°
m∠CBD = 9x°
x
9x° − 135° = 180°
9x° + 135° = 90°
9x° + 135° = 180°
9x° = 180°
The correct equation to solve for x is:
9x° + 135° = 180°