Answer:
-10
Step-by-step explanation:
-2.5 times 4
05(9)+20
becasue i know and this was the only way to allow me to give you the answer
4x+11+8x+1=180 (the two angles given is supplementary angles)
11x+12= 180
11x=168
x=168/11
x=15.27
please give brainly if it helps
