Ineed some checking my is 6 correct?

You correctly found x such that

... x/14 = 9/21

... x = 14·9/21 = 6

However, BC = x+9, so BC = 15.

The question does not ask for x, so your answer needs to be revised.

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 : )

answer:

what is your question that you ask

step-by-step explanation: