If 15 is 3/8 of x(our number we are trying to find), the we can set up the equation:
15 = x * 3/8
15 * 8 = x * 3 (multiplied both sides by 8)
120 = 3x
120 / 3 = x (divided both sides by 3)
40 = x
Therefore, 15 is 3/8 of 40.
5/4 = 1.25
so
x + 1.25x = 180
2.25x = 180
x = 80
1.25x = 1.25(80) = 100
answer
angle and its supplement measure: 80 and 100
I believe you’re asking 3 divided by 47, but no it does not terminate, it’s a never ending decimal (irrational)