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gladu [14]
3 years ago
13

In a class of 7 there are 2 students who forgot their lunch. If the teacher chooses 2 students what is the probability that both

of them forgot their lunch
Mathematics
1 answer:
Reika [66]3 years ago
4 0
It is about a 28% chance.
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When playing roulette at the Venetian casino in Las Vegas, a gambler is trying to decide whether to bet $5 on the number 27 or t
cricket20 [7]

Answer:

Step-by-step explanation:

Given that:

To bet $5 that the outcome is any one of these five possibilities: 0, 00, 1, 2, 3.

Let Y represent the Amount of net profit

Then, Y= {-5, 30}

The probability distribution of Y is:

Y                        -5                        30

P(Y=y)                \dfrac{33}{38}                        \dfrac{5}{38}

a)  The expected value of X is given by:

E[Y] =\sum y P(Y=y)= 30*\dfrac{5}{38}-5*\dfrac{33}{38}

=-0.39

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b)

On a bet of $5 on the number 25 we are expected to loose 24 cents.

While on a $5 bet that the outcome is any one of the numbers 0,00, or 1 we are expected to loose 39 cents.

Hence,  $5 bet on the number 27 is better. Because the expected loss is less in this bet

6 0
3 years ago
A. -5<br> B. 11<br> C. 38 - 8i<br> D. 3+ 8i
siniylev [52]

Answer:

D.

Step-by-step explanation:

5 0
3 years ago
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4. The sum of three consecutive odd integers is 36.
PilotLPTM [1.2K]

Answer:

11, 12, 13

Step-by-step explanation:

n, n + 1, n +2

The sum will add to 36

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Which ordered pair is not in the solution set of
Fed [463]

Answer:

the pair that is not a solution is d

Step-by-step explanation:

5 > 2(2) + 1

5 > 4 + 1

5 > 5

it is equal to and not greater than

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Answer:

D)The equation is f(x)=3x^2−9x+3, and the parabola opens upward.

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