Final answer:
Abigail's average speed is calculated by dividing the total distance of 58 miles by the total time of 4 hours, which results in an average speed of 14.5 miles per hour.
Step-by-step explanation:
The student is asking how to calculate average speed, which is a basic concept in mathematics that relates to rates of movement over time. To find Abigail's average speed while roller skating, you simply divide the total distance traveled by the total time taken. In this case, Abigail roller skates 58 miles in 4 hours.
To calculate the average speed, the formula used is:
Average Speed = Total Distance ÷ Total Time
Using this formula, we divide 58 miles by 4 hours:
Average Speed = 58 miles ÷ 4 hours = 14.5 miles per hour
This means Abigail's average speed while roller skating is 14.5 miles per hour.