Suppose a bag of marbles has 4 green, 2 red, 5 yellow, 1 brown, and 7 blue marbles. what is the probability of picking a red marble?

Assuming that each marble can be picked with equal probability, we notice that there is a total of

marbles, of which 2 are red.

So, the probability of picking a red marble is

In fact, as in any other case of (finite) equidistribution, we used the formula

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

48 / 6 = x

in this case, x will equal the amount of money in each card!

x therefore will be 8.

trent had $8 in each birthday card.