What is the probability of not drawing a green marble for my jar containing seven red, four green, three white, and nine blue marbles

The probability of not drawing a green marble would be 19/23.

If you add together all of the marbles, you get the total number of marbles as 23. This then allows you to write the probability of drawing a green marble as 4/23.

To find the probability of not drawing a green marble, we can then subtract 4/23 from 23/23, as we want the probability of everything except green. 23 - 4 = 19, so 19/23 is the answer.

I hope this helps!