Question

Xam idea Mathematematics-IX
please solve

Answer 1

Angle y
= (30+20)-180
= 50-180
= 140°

Angle x
=180-100
= 80°

Now,

(y+x):(y-x)
=(140+80):(140-80)
=220:60
=22:6
=11:3

Hope it'll Help You......

Answer 2

Answer:

Step-by-step explanation:

30+y+20=180 (linear pair)

50+y=180

y=180-50

y=130

<A +<B=180 (linear pair)

100+x=180

x=180-100

x= 80

x+y : y- x

80+130 : 130-80

210 : 50

21 : 5

Hope you find it helpful.