Question

1. doug entered a canoe race. he rowed 3 ½ miles in ½ hour. what is his average speed in miles per hour?

Explanation:

Step1: Recall speed formula

Speed formula: \( \text{Speed} = \frac{\text{Distance}}{\text{Time}} \)
Distance = \( 3\frac{1}{2} \) miles = \( \frac{7}{2} \) miles, Time = \( \frac{1}{2} \) hour.

Step2: Substitute values into formula

\( \text{Speed} = \frac{\frac{7}{2}}{\frac{1}{2}} \)
Dividing by a fraction: \( \frac{7}{2} \div \frac{1}{2} = \frac{7}{2} \times \frac{2}{1} = 7 \)

Answer:

7 miles per hour