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