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3 years ago

List common factors of 9 and 18

Mathematics

1 answer:

In-s [12.5K]3 years ago

8 0

9:{1,3 3,9}
18:{1,2,3 6,9,18}

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drek231 [11]

Answer:

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

Step-by-step explanation:

A student that purchases 10 tickets out of 2900 has a probability of winning the cruise that can be calculated as:

$p=10/2900\approx0.00345$

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Then, the expected value of this operation is equal to the expected value of the earnings (probability of winning the prize multiplied by the value of the prize), minus the costs:

$E(X)=p\cdot R-C\\\\E(X)=0.00345\cdot3000-50=10.35-50=-39.65$

The mathematical expectation of a student who purchases 10 tickets is -$39.65.

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3 years ago

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2 years ago

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KatRina [158]

Answer:

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Step-by-step explanation:

104 dollars for 8 hours of work. So how much money per hour?

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3 years ago

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