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ArbitrLikvidat [17]
3 years ago
8

a bag contains 8 balls. 5 are black 3 are white. a ball is taken out of the bag at random and not replaced. another ball is take

n out of the bag at random. what is the probability that both of the balls are the same colour?

Mathematics
1 answer:
DIA [1.3K]3 years ago
8 0
Here you go .
If you need any explanations , please do ask .

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To find f(5), just look at the table and find the value for x that corresponds with f(5). In this case, this value is -1.

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4 0
2 years ago
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Factor 3x^2y^2 − 2xy^2 − 8y^2. Show your work.
docker41 [41]
<span>3x^2y^2 − 2xy^2 − 8y^2 =
y^2 (3x^2 - 2x - 8) =

factoring with leading coefficient:

for ax2+bx+c find two numbers n,m, that m*n = a*c and m+n = b
</span><span><span>
3x^2 - 2x - 8
a=3, b=-2, c=-8
</span>a*c = 3*(-8) = -24
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replace bx with mx + nx and factor by grouping
</span><span>
3x^2 - 2x - 8 = </span>3x^2 -6x + 4x -8 = 3x(x-2) + 4(x-2) = (3x+4)(x-2)

answer:
<span>3x^2y^2 − 2xy^2 − 8y^2 = y^2(3x+4)(x-2)</span>

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