Answer:
x=7
Step-by-step explanation:
80 because the sum of a triangle should be 180 so 180 - 100 is 80
80 KM PER HOUR OR ABOUT 1.3 KM PER MINUTE!
use formula y=mx+c
so the answer is B
20°
x+40=60 (vertically opposite angle)
or, x=60-40
or, x=20°
