Question

What is the measure, in degrees, of ZA?

Answer 1

28

Explanation:

2x + 3x + 40 =180

5x= 180 - 140

5x=140

x= 28

Answer 2

Explanation:

We know that the sum of interior angles of a triangle is 180° so we can say:

40 + 2x + 3x = 180°

40 + 5x = 180°

5x = 140°

x = 28°

Now substitute in 28 for the value of x in Angle A:

=> 2x would become 2(28)

=> 56° = ∠A

Hope this helps!