3 years ago

Helpppp(show work plz thx)

Mathematics

2 answers:

Leni [432]3 years ago

8 0

There could be 6 girls on one team and 6 boys on another.

egoroff_w [7]3 years ago

6 0

6 girls and 6 boys :)

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Answer:

6 : 16, 12 : 32 and 18 : 48.

Step-by-step explanation:

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The length of a rectangle is eight more than twice its width. The perimeter is 96 feet. Find the dimensions of the rectangle

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Step-by-step explanation:

Length = L

Width = W

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2 years ago

Consider a bettering game where you bet $10 and have a probability of 0.45 of getting $20 back ($10 more than you started with)

Marina CMI [18]

Answer:

(a)

$f(x) = P(X=x) = \begin{Bmatrix} 0.45 \,\,\, \text{for} \,\,\, x = 10 \\ 0.55 \,\,\, \text{for} \,\,\, x = -10 \end{matrix}$

(b)

-1

(c)

Step-by-step explanation:

(a)

Your random variable will have two possible values, 30 and 0, one of them with a probability of 0.45 and the other one with a probability of 0.55. Therefore it looks like this.

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(b)

The expected value of this PMF would be

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(c)

For this one, if you play 20 times and your initial amount is 50$ then you have to compute the following expectation.

$E[50+20*X] = 50+20*E[X] = 50-20 = 30$

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3 years ago