Question

If the degree measure of an angle is 40° less than 3 times the degree measure of its supplementary angle, what is the degree measure of the angle?
A.
50°
B.
55°
C.
125°
D.
130°

Answer 1

Best to know what you're working with.
if A is your missing angle, what is its supplementary angle?

Answer 2

i dont know

Answer 3

Well, if say, B is the supplementary angle of A.
Then
A + B = 180
Now use algebraic manipulation, find B

Answer 4

like angle a + angle b

Answer 5

yes, so what's B?

Answer 6

40

Answer 7

is there a drawing of a angle in your question?

Answer 8

no

Answer 9

If A is the measure of an angle, then the measure of its supplement is *whatever you have to add to it to get 180*