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2 years ago

HELPPP FOR BRAINLEST!!!

Mathematics

2 answers:

Alina [70]2 years ago

8 0

Answer:

3/17

Step-by-step explanation:

the number of club members who read about 1 hour per week AND prefer paperback books is 3

Put that over the total amount of club members in the sample which is 17

so 3/17 and that doesn't simplify :)

polet [3.4K]2 years ago

5 0

Answer:

3/17

Step-by-step explanation:

Add together all the readers, and then as the numerator of the fraction put the number of Paperback Books and the 1 hour per week. The fraction is three seventeenths.

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Step-by-step explanation:

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Identify the vertex and the axis of symmetry of the graph of the function y=3(x+2)2-3

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3 years ago

A dolphin is swimming 4 feet below the surface of the water. the number -4 represents the dolphins position relative to the surf

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Answer: option B. 4 feet above water.

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This is an example of the use of the integer numbers.

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3 years ago

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2 years ago

g In American roulette, the wheel has the 38 numbers, 00, 0, 1, 2, ..., 34, 35, and 36, marked on equally spaced slots. If a pla

earnstyle [38]

Answer:

The expected value for the player to play one time is -$0.05.

Step-by-step explanation:

The expected value of a random variable X is given by the formula:

$E(X)=\sum x\cdot P(X)$

The American roulette wheel has the 38 numbers, {i = 00, 0, 1, 2, ..., 34, 35, and 36}, marked on equally spaced slots.

The probability that the ball stops on any of these 38 numbers is same, i.e.

P (X = i) = $\frac{1}{38}$ .

It is provided that a a player bets $1 on a number.

If the player wins, the player keeps the dollar and receives an additional $35.

And if the player losses, the dollar is lost too.

So, the probability distribution is as follows:

X : $35 -$1

P (X) : $\frac{1}{38}$ $\frac{37}{38}$

Compute the expected value of the game as follows:

$E(X)=\sum x\cdot P(X)$

$=[\$35\times \frac{1}{38}]+[-\$1\times \frac{37}{38}]\\\\=\frac{\$35-\$37}{38}\\\\=-\frac{\$2}{38}\\\\=-\frac{1}{19}\\\\=-0.052632\\\\\approx -\$0.05$

Thus, the expected value for the player to play one time is -$0.05.

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3 years ago