Answer: I think its C
Please mark brainliest
Step-by-step explanation:
How fast did he run each mile, that is to say how fast did he run 1 mile.
We can simply find the time it took him to run 1 mile.
He ran 7 miles in 57 3/4 minutes = 57.75 minutes.
In 1 mile he would run = 57.75/7 minutes = 8.25 minutes.
He ran 1 mile, that is each mile in 8.25 minutes.
I hope this helped.
This is called the Associative Property of Addition.
In short, associative property of addition states that the quantity of an additive expression is going to be the same no matter how the expression is grouped. In this case, it doesn't matter whether 6+3 is added first or 3+21 is added first because they will end up with the same quantity.