Answer:
B.
Step-by-step explanation:

Answer:
the answer is c now mark me brainliest please.
Step-by-step explanation:
all sides are congruent and it is a parallelogram.
Answer:
i don't know
Step-by-step explanation:
so i have 20 the answer i thin
(40+x)/2=60
40 +x = 120
x = 80
check :
40+80 = 120
120/2 = 60
so his second round needs to be 80 mph