Answer:
140 mile
Step-by-step explanation:

While x is the speed of the second train.
Answer:
I believe it's 1.864114 miles.
x + 8x = 9x
(like 1 + 8 but with x's)
Answer:
I just need points I don't know your answer
Step-by-step explanation:
50, 60 , 70 can be three angles in a triangle