Answered

Rachel rode her bicycle 18.2 miles in 1.4 hours. She determines that her mean speed was less than 17 miles per hour for this trip. Is she correct?

Sagot :

s = d ÷ t
s = 18.2 miles ÷ 1.4 hrs.
s = 13 mi/hr 

So yes, it was less than 17 miles per hour ...