Question

two supplementary angles are in ratio of 4:5 find the angles

Answer 1

4x+5x=180
9x=180
x=180/9
x=20
4*20=80,5*20=100

Answer 2

Hello....

The supplementary angles are that the sum of two angles must be 180°..

Let the two angles be 4x and 5x

So,

5x + 4x = 180 °
9x = 180°
X = 180 / 9
x = 20 °..

So the first angle is 4x = 4* 20 = 80°
The second angle is 5x = 5* 20 = 100°

Hope it helps....

And here CutieBarbie :)