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USPshnik [31]
2 years ago
5

In a game a player draws and replaces a card from a deck 2 times. The possible outcomes and payouts are shown. What is the

Mathematics
1 answer:
Goshia [24]2 years ago
3 0

<u>Given</u>:

Given that in a game a player draws and replaces a card from a deck 2 times.

The possible outcomes and payouts are given.

We need to determine the expected value for someone playing the game.

<u>Expected value:</u>

The expected value for someone playing the game can be determined by

EV=(\frac{26}{52})(\$ 20)+(\frac{52}{52})(\$4)+(\frac{52}{52})(\$ 0)+(\frac{26}{52})(-\$12)

Simplifying the values, we have;

EV=(\frac{1}{2})(\$ 20)+(1)(\$4)+(1)(\$ 0)+(\frac{1}{2})(-\$12)

Dividing the terms, we get;

EV=\$ 10+\$4+\$ 0+-\$6

Adding, we have;

EV=\$ 8

Thus, the expected value for someone playing the game is $8

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2 years ago
The sum of a number and its square is 182. Find the number.
Mars2501 [29]

Answer:

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Step-by-step explanation:

Let's represent that number as x

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So,

x + x^2 = 182

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x + x^2 - 182 = 182 - 182

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rearrange the quadratic equation

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let's use the quadratic formula

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\frac{-1+\sqrt{1+728} }{2}      or         \frac{-1-\sqrt{1+728} }{2}

\frac{-1+\sqrt{729} }{2}            or    \frac{-1-\sqrt{729} }{2}

\frac{-1+{27} }{2}     or    \frac{-1-{27} }{2}

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3 years ago
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Answer:

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Step-by-step explanation:

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