Step-by-step explanation:
add all marbles together:
4 (green) + 3 (red) + 3 (yellow) = 10 marbles total
if we pick a yellow marble out of the bag and do not replace it, then we have 2 yellow marbles left.
we need to add marbles again with one yellow marble subtracted.
4 (green) + 3 (red) + 2 (yellow) =
new Total is 9 marbles.
so then we have 2 yellow marbles out of 9 total marbles.
2:9
or 2/9
or .22 (22%)
is the probability
Answer:
a^4+3a^2-3b^2
Step-by-step explanation:

Answer:
5
Step-by-step explanation:
24 divided by 3 is 8
so 15 divided by 3 is 5
Answer:
i think the answer is -13
Answer:-77
Step-by-step explanation:positive plus a negative equal a negative unless the negative is smaller then the number you subtract it from