The diagram that represents the information is the third diagram which shows 28 1/2 miles and 3 hours.
What is average speed?
Average speed is the total distance travelled per time.
Average speed = total distance / total time
The biker rode at a speed of 9 1/2 miles per hour. So, the diagram that is correct would have an average speed of 9 1/2 miles per hour.
- First diagram : 4 / 38 = 2/19 miles per hour
- Second diagram : 20 / 10 1/2 = 1 19/21 miles per hour
- Third diagram : 28 1/2 / 3 = 9 1/2 miles per hour
- Fourth diagram: 36 1/2 / 4 = 9 1/8 miles per hour
To learn more about average speed, please check: https://brainly.com/question/21734785
