Question

I don’t pay attention in class

Answer 1

Pay attention then lol.

Answer 2

Explanation:

All the angles in a triangle add up to 180 degrees

x-22 + 3x+19 + x-17 = 180

x+3x+x-22+19-17=180

5x - 20=180

5x=180+20

5x=200

5x/5=200/5

x=40

Angle A= x-22

Substitute x in the question

= 40 - 22

=18

Therefore angle A is 18 degrees