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3 years ago

How do I find the possible values of x

Mathematics

1 answer:

g100num [7]3 years ago

4 0

The 2 triangles in the big triangle are similar so we can write
3x / 3x - 2 = 5x / 3x

9x^2 = 15x^2 - 10x
6x^2 - 10x = 0
x(6x - 10) = 0
x= 0 or 5/3

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Over [174]

Answer:

There is a 2/3 probability that the other side is also black.

Step-by-step explanation:

Here let B1: Event of picking a card that has a black side

B2: Event of picking a card that has BOTH black side.

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$P(B_2/B_1 ) = \frac{P(B_1\cap B_2)}{P(B_1)}$

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⇒ P (B1 ∩ B2) = 1 /3

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Putting these values in the formula, we get:

$P(B_2/B_1 ) = \frac{P(B_1\cap B_2)}{P(B_1)} = \frac{1}{3} \times\frac{2}{1} = \frac{2}{3}$

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