A bag contains 80 marbles: 40 are red, 20 are blue, and 20 are black. what is the probability of selecting a red or blue marble
at random
1 answer:
40 % out of 80 for red
20% out of 80 for blue
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Answer:
The answer is 35. I took the test and got 35.
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5m = -8 + 3m
2m = -8
m = -4
