21 because you just multiply the 2 numbers.
Answer:
1st and second, unless you have already learned area of trapezoids. If you have, add third
Step-by-step explanation:
It’s going to be B. 50+60+70=180 which is how many degrees are in a triangle.
Answer:
1. (28-2)x
2.(12+6)x
3.(15+1)x
Step-by-step explanation:
Answer:
D. 1,211
Step-by-step explanation:
857 + 354 = 1,211 runners
