Question

Please show me how you did it?

Answer 1

Hello there!

Speed has the following formula:
S = $\frac{D}{T}$, or Speed is equivalent to Distance divided by Time.

Let's check out our problems to solve for the speed.

16.)
We have 770 miles, which is a measure of distance.
We have 120 minutes, which is a measure of time.

Let's substitute our variables with these numbers.

S = $\frac{770}{120}$
Simplify.
S = ~6.41 Mi/min

17.)
We have 2.5 mi, which is our measurement of distance.
We have 0.5 h, which is our measurement of time.

S = $\frac{2.5}{0.5}$
Simplify.
S = 5 Mph (When you divide by 0.5 you are multiplying the numerator by 2).

18.)
We have 244 km, our distance.
We have 2.5 h, our time.

S = $\frac{244}{2.5}$
Simplify.
S = 97.6 km/h

I hope this helps!