Bob roller blades 9 miles each morning. Today, he averaged 10 miles per hour for the first 6 thiles but then slowed to 5 miles per hour for the rest of the trip. How long did the entire trip take?

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d

answer: 5

step-by-step explanation:

ratio is 2 : 9

the answer is three

13.5 : 3