shayla was late for school. she ran the last half mile in four minutes. what was her average speed in miles per hour

The answer is: average speed is 7.5 miles per hour.

t = 4 min : 60 min/h.

t = 0,067 h; time Shyla ran the last half mile.

d = 0.5 m; distance Shayla run in four minutes.

v = d : t.

v = 0.5 m : 0.067 h.

v = 7.5 mph; average speed in miles per hour.

The speed (scalar quantity) of an object is the magnitude of its velocity.