Answer:
the first 1 and the last 1 i think
Step-by-step explanation:
55mph.
you can solve it using the equation distance=speed x time
your total distance is 714, and you have 2 trains, one traveling some speed, x, and one traveling x+8, both traveling for 7 hours.
your equation would look like this

and you can then solve for x, which would be 47. this is the speed of the slower train, but 47+8=55 with give you the speed of the faster train.
Answer:
x=14.4
Step-by-step explanation:
x=
x=
x=
x=
x=14.4
Answer:
x=-12
x=10
x=-8
x=-5
Step-by-step explanation: