Find the measures of angles of ABC if they have the ratio 4:5:9 respectively

Question

I Dont Know How To Solve It :)

Answer 1

If ABC is a triangle, you would solve it in the following way.

4x + 5x + 9x = 180

18x = 180

x = 10

m∠A = 4(10) = 40º

m∠B = 5(10 = 50º

m∠C = 9(10) = 90º