Answer:
Eric, 13, 8th grade, can't call rn but would gladly help another time! :D
Step-by-step explanation:
Answer:ion know
3a) Answer: 84 degrees
3x + 2(x+20)= 180 (total sum of angles in a triangle is 180 degrees)
5x+40 = 180
5x = 140
x= 28
3x= 28 x 3
= 84
it's geometric
8/4=2 16/8=2
d=2