Answer:
I'm not sure but at least i tried
well, we can say that 1 hour is 100%, what is 2/5 hr off of it in percentage?

Answer: I think your answer is B, but I'm not positive
Step-by-step explanation:
12 out of 18. This is because there is 6 red marbles and 18 of them all together. The question states the probability of the red marble NOT being chosen therefore you need to take away 6 from 18 leaving you with 12. I hope this made sense :)
Answer:
Step-by-step explanation:

School band played for 4 hours.