express each rate as a unit rate.
400 yards in 53 seconds
(400/53) yards/second
400/53=7.55
To express a rate as a unit rate, we need to find the value of 1 unit of the given quantity. In this case, we want to express the rate of 400 yards in 53 seconds as a unit rate.
To do this, we divide the quantity by the given value. Here's the calculation:
400 yards ÷ 53 seconds
When we divide 400 yards by 53 seconds, we get approximately 7.547 units.
Therefore, the unit rate for 400 yards in 53 seconds is approximately 7.547 yards per second.