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:
4 I think
Step-by-step explanation:
hope this help's
Answer:
Percent, Part, whole, I am not sure the rest hope this helped though
Step-by-step explanation:
You can do:
16 - 10 and then + 1 (thats 7)
9+ ? is 16 ? ( 7)
Answer:
A = 27 cm²
Step-by-step explanation:

Putting in the above formula
A = (10.8)(2.5)
A = 27 cm²