There is a bag filled with 3 blue, 4 red and 5 green marbles. a marble is taken at random. what is the probability of exactly 1 red?

P 1 red) = 1/3

Step-by-step explanation:

We have 12 marbles (3+4+5)

P(red) = red marbles/ total marbles

          = 4/12 = 1/3

4 / 12 or 1/3

Step-by-step explanation:

The total is 3 blue, 4 red and 5 green marbles which is 12 marbles altogether.

There is exactly 4 marbles out of the 12 marbles that are red so the probability of choosing a red is 4 / 12 or 1/3

answer: it is 1: 47 pm

b. 18

step-by-step explanation:

so the equation for this is:

ab^2=ac⋅ad

ab being the top length of 6 and ac being the length of 2 and ad being the length of x. let's plug into the equation:

6^2 = 2x

now lets just solve for x:

36 = 2x

18 = x

i hope that !