Question

the supplement of a certain angle is 3.5 times the angle.what is the measure of the angle

Answer 1

hey there
let the angle be x
its supplement be 180 - x
3.5 x = 180 -x
35/10 x +x = 180
7/2 x +x = 180
7x +2x/2 = 180
9x = 180*2
x = 360/9
x = 40
angle is 40 degree :)