Answer:
-3.0
Step-by-step explanation:
The opposite of 2 & 1/2 is the negation, or -2 & 1/2, or -2.5.
The sum of 1.25 (1 & 1/4 or 5/4) and -1 & 3/4 (-1.75 or -7/4) is -2/4 (or -0.5).
So if we add -2.5 to -0.5, we get -3.0.
70 Miles per Hour =112.65408 Kilometers per Hour
There are 1.60934 kilometers in a mile
62.5%. Or, if it is a fraction, then I believe it is in simplest form, Hope it helps!