Question

Find the measure of angle A.

Answer 1

Explanation:

29. x + 60 + 2x + 80 + 40 = 180

3x + 180 = 180

3x = 0

x = 0

m<A= 0 + 60 = 60

30. 2(4x + 5) + 90 = 180

8x + 10 + 90 = 180

8x + 100 = 180

8x = 80

x= 10

m<A= 4(10) + 5 = 40 + 5 = 45

31. 10x + 11x + 6 + 90 = 180

21x + 96 = 180

21x = 84

x = 4

m<A= 10(4)= 40

32. 5x + 5x + 130 = 180

10x + 130 = 180

10x = 50

x = 5

m<A= 5(5)= 25

33. 8x + 2 + 3x + 15 + 75 = 180

11x + 92 = 180

11x = 88

x = 8

m<A= 3(8)+15= 24+15= 39

34. x + 64 + x + 54 + 80 = 180

2x + 118 = 180

2x = 62

x = 31

m<A= 31 + 54= 85