Question

please explain step by step​

Answer 1

Answer:

x= 20⁰, y= 70⁰

Step-by-step explanation:

let the angles x, y be 2a⁰ and 7a⁰ respectively.

since all angles of rectangle are 90⁰, so angle A is 90⁰

A+2a⁰+7a⁰ = 180⁰ (because sum of angles of triangle is 180⁰)

90⁰+2a⁰+7a⁰=180⁰

9a⁰=180⁰-90⁰

9a⁰=90⁰

a=10

x=2a⁰= 2×10=20⁰

y=7a⁰=7×10=70⁰

Answer 2

Answer:

x=20,y=70

2x+7x +90=180

9x +90=180

x=10

2×10=20

7×10=70