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3 years ago

A bag contains 7 red marbles, 8 blue marbles and 4 green marbles. If three marbles

Mathematics

1 answer:

dybincka [34]3 years ago

6 0

Answer:

Step-by-step explanation:

A bag contains 8 red marbles, 3 blue marbles and 7 green marbles.

Total = 18 marbles.

Probability of drawing three red marbles = probability of drawing one red without replacement + probab of drawing another without reeplacement + probab of drawing a third without replacement.

Probability of drawing three red marbles = 8/18 + 7/17 + 6/16 = 0.4444 + 0.4118 + 0.3750 = 1.2312.

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What is the value of 2^-4

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The answer for 2^-4 is 1/16

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Answer:

1320

Step-by-step explanation:

33000/25 = 1320

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HELP ASAP (50 pts!!) Kaely and Bro share an account on a game and want game bucks. 2,800 bucks cost $25. Kaely adds $15 and Bro

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Answer:

Kaely gets 1,680 and Bro gets 1,120

Step-by-step explanation:

First you need to find how may bucks you will receive with 1$

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3 years ago

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A study was conducted to determine whether there were significant differences between medical students admitted through special

Mekhanik [1.2K]

Answer:

$P(X\geq 9)=P(X=9)+P(X=10)$

And using the probability mass function we got:

$P(X=9)=(10C9)(0.913)^9 (1-0.913)^{10-9}=0.383$

$P(X=10)=(10C10)(0.913)^{10} (1-0.913)^{10-10}=0.402$

And replacing we got:

$P(X \geq 9) = 0.383 +0.402= 0.785$

Step-by-step explanation:

Let X the random variable of interest "number of students graduated", on this case we now that:

$X \sim Binom(n=10, p=0.913)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

We want to find the following probability:

$P(X\geq 9)=P(X=9)+P(X=10)$

And using the probability mass function we got:

$P(X=9)=(10C9)(0.913)^9 (1-0.913)^{10-9}=0.383$

$P(X=10)=(10C10)(0.913)^{10} (1-0.913)^{10-10}=0.402$

And replacing we got:

$P(X \geq 9) = 0.383 +0.402= 0.785$

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4 years ago

A cylinder has a radius of 14 m and a height of 6 m.

oksano4ka [1.4K]

Option D: $1176 \pi \ {m}^{3}$ is the volume of the cylinder

Explanation:

Given that the cylinder has a radius of 14 m and a height of 6 m

We need to find the exact volume of the cylinder.

The formula to determine the volume of the cylinder is given by

$Volume=\pi r^{2} h$

Let us substitute $r=14$ and $h=6$ in the above formula, we have,

$Volume=\pi (14)^{2} (6)$

Squaring the terms, we get,

$Volume=\pi (196)(6)$

Multiplying we have,

$Volume=1176\pi \ m^3$

Thus, the volume of the cylinder is $1176 \pi \ {m}^{3}$

Therefore, Option D is the correct answer.

6 0

3 years ago