Respuesta :

ricchad

Answer:

a) ∠BAC = 30°

b) ∠B = 120°

c) ∠BAG = 150°

Step-by-step explanation:

2x + 18 = 5x

18 = 5x - 2x

3x = 18

x = 6

a)  find m∠BAC

substitute x=6 to ∠BAC

∠BAC = 2x + 18

          = 2(6) + 18

          = 30°

b)  find m∠B

∠B = 180 - ∠A - ∠C

    = 180 - 30 - 30

     = 120°

c) find m∠BAG

∠BAG = 180 - ∠A

          = 180 - 30

          = 150°