What is the average number of feet per second if an athlete swims 100 yards in 52 seconds, rounded to the nearest tenth?

To determine the average number of feet per second, you first need to convert the distance the athlete swims from yards to feet. Knowing that there are 3 feet in a yard, you can convert 100 yards to feet by multiplying:

100 yards × 3 feet/yard = 300 feet.

Now, with the total distance of 300 feet covered in 52 seconds, you can calculate the average speed in feet per second by dividing the total distance by the total time:

Average speed = Total distance / Total time

Average speed = 300 feet / 52 seconds.

Carrying out the division, you would get:

Average speed ≈ 5.7692 feet per second.

When rounding this value to the nearest tenth, it becomes 5.8 feet per second. Therefore, the average number of feet per second is accurately represented by the choice that indicates this value.