Question

34th answer please.Math Chapter

Answer 1

Answer:

(a) sum of ratios 3+7+1+9= 20

let the ratios be expression

3x, 7x, x, 9x

angle 1 = 20× 3= 60°

angle 2= 20×7=140°

angle 3= 20×1=20°

angle 4= 20×9= 180°

this is the answer

Step-by-step explanation:

hope it helps you