Question

hola guys......
plz answer these questions in the attachment....

Answer 1

Hola user!!!

Let 3:5:9:13 be 3x, 5x, 9x, 13x

Sum of a quadrilateral = 360°

3x + 5x + 9x + 13x = 360°

30x = 360°

x = 360/30

x = 12°

3x = 3 × 12 = 36°

5x = 5 × 12 = 60°

9x = 9 × 12 = 108°

13x = 13 × 12 = 156°

#be brainly

Answer 2

let angels in ratio 3:5:9:13 be a, b,c,d
let
a=3x, b=5x, c=9x, d=13x
where x is a any number...

as we know that
sum of angels of quardrilateral is 360degree

now,
a+b+c+d=360degree
or,3x+5x+9x+13x=360degree
or,
30x=360degree
or
x=360/30=12degree

so x=12degree....
now you can solve easily
hope you like it