bigmac34
10.07.2019 •
Mathematics
Ajar contains black and white marbles, which are drawn with replacement. the probability of selecting a black marble is 0.34. what is the probability of selecting one white marble and one black marble
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Ответ:
Picking white marble 1st = 0.66
Picking black marble 2nd = 0.34
Picking white marble 2nd = 0.66
Probability of one white and one black is 0.34 + 0.66 or 0.66 + 0.34
Ответ:
x^2-4x-96=0
(x-12)(x+8)=0
(x-12)=0 or (x+8)=0
x=12 or x=-8 -> not x=-8 because you can't have a negative x
12x2 + (12-4)x2 =
24 + 16 = 40