You would have to estimate this and a rough estimate would be around 240
Answer:
12-12=21
Step-by-step explanation:
i think it is that
Choosing blue or red: 3 blue + 4 red = 7 marbles
3 blue + 2 green + 4 red + 1 yellow = 10 marbles
Probability blue or red marble: 7/10
Choosing a marble that isn't blue or red: 2 green + 1 yellow = 3 marbles
Total marbles: 3 blue + 2 green + 4 red + 1 yellow = 10 marbles
Probability non-blue or red marble: 3/10
If the last one is supposed to be 7(8+3), it would be equivalent to 56+21
-3x-3x=-24
-6x=-24
x=4
y=3(4)
y=12
