There are 10 boxes in a grab bag boxes are identical except for its at 7 of them contain $20 bills a contest winner gets too pick two boxes from the grab bag which is the probability of getting two $20 bills

46.67% probability of getting two $20 bills

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The order in which the boxes are chosen is not important, so the combinations formula is used to solve this question.

Combinations formula:

is the number of different combinations of x objects from a set of n elements, given by the following formula.

Desired outcomes

There are 7 boxes with $20 bills.

We want to grab two of them. So

Total outcomes

2 boxes, from a set of 10. So

Probability:

46.67% probability of getting two $20 bills

your answer would be b

step-by-step explanation:

v = 1/3 a^2h

step-by-step explanation:

the volume is 1/3 a^2h.