How would I know which ones they are...? plz give a detail explanation

rational

Step-by-step explanation:

this is because it can be expressed as quotient of two integers:77÷1

rational

Step-by-step explanation:

because square root of 77 is not a perfect square so you have to square root it and you'll get a decimal as your answer

the answer is here: : )

:

4+n=5

step-by-step explanation:

this is because the four is four hours and the n represents the 1 extra hour over the weekend.

b= i'm srry i don't know that one.

4+n=5 n=1 because if vernon plays 5 hours a week then 4+1=5 hours.

hope this : )