Nolan rides his bike 63 miles in 270 minutes. what is his average speed in miles per hour?

The average speed is 14 miles/hour.

Step-by-step explanation:

The average speed of a movil is the ratio between displacement and time interval. If we called the displacement as Δx and the interval of time as Δt, then

Average speed = Δx/Δt

Replacing with the indicated values, we have

Average speed = 63 miles / 270 minutes

But we have to express the result in miles per hour so

270 minutes x (1 hour/60 minutes) = 4.5 hour.

⇒ Average speed = 63 miles / 4.5 hours

⇒Average speed = 14 miles/hour.

The average speed is 14 miles/hour.