Question

plz answer this q asap friends thanks

Answer 1

Answer:

A1.  1

A2. $20^{0}$

Step-by-step explanation:

a1) Substitute y=-1

you get 1

a2) Sum of angles = 180

40+7x = 180

therefore, x=20

Answer 2

Answer: Q1) b= 1

Q2) x=20

Step-by-step explanation:

Q2) 40° + 4x+3x =180°

40°+ 7x =180°

7x = 140°

x = 20°

This is ur answer mate...