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Contact [7]
3 years ago
13

When the number is reduced by 15% , the answer is 6154 . What is the original number ?

Mathematics
1 answer:
Vesna [10]3 years ago
4 0

Let's assume the number as x .

15% of x = \dfrac{x \times 15}{100}

→ \dfrac{3x}{20}

So after reducing 15% the number will be 6154 .

→ x - 3x/20 = 6154

→ 17x/20 = 6154

→ 17x = 6154 × 20

→ 17x = 123080

→ x = 123080/17

  • → x = 7240

So the number is 7240

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Answer:

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Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

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In which

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e = 2.71828 is the Euler number

\mu is the mean in the given interval.

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This means that \mu = 3

P(1≤X≤3) ?

P(1 \leq X \leq 3) = P(X = 1) + P(X = 2) + P(X = 3)

So

P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}

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P(X = 2) = \frac{e^{-3}*3^{2}}{(2)!} = 0.2240

P(X = 3) = \frac{e^{-3}*3^{3}}{(3)!} = 0.2240

So

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3 years ago
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Answer:

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Step-by-step explanation:

Given:

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Number of children in each room = c / 3

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