2/5
Since 12 out of 30 marbles were black, you can assume that the percentage of black marbles in the bag is 40% (Ex: 12/30=.4) The probability that the marble you pick is black is equal to the percentage of black marbles in the bag. 40% is equal to 2/5.
It would be -(-31) because a negative and negative is a positive
Answer:
19 in the largest prime number smaller than 20.
52x19=988.
Step-by-step explanation:
the answer to your question is n = -2
Answer:

Step-by-step explanation:
on the picture
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