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3 years ago

What is the volume of a cylinder with a diameter of 14 cm and a height of 4 cm

Mathematics

1 answer:

natali 33 [55]3 years ago

7 0

Use the formula for a cylinder:

\pi r^2h[/tex]

\pi[/tex] 49•4=
3.14•49•4=615.44

Answer: The volume is 615.44 $cm^2$

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How do i factor s^2+9s=-20

Talja [164]

To factor you have to do this:

s^2 + 9s = -20
+ 20 +20

s^2 + 9s + 20 = 0

now you need to numbers that multiplied give you 20
and then those same 2 numbers have to add to 9

5 x 4 = 20
5+ 4 = 9

(x + 4) (x+ 5)

that means that x= -4, and -5

8 0

3 years ago

a statistics professor finds that when he schedules an office hour at the 10:30a, time slot, an average of three students arrive

Veseljchak [2.6K]

Answer:

The probability that in a randomly selected office hour in the 10:30 am time slot exactly two students will arrive is 0.2241.

Step-by-step explanation:

Let X = number of students arriving at the 10:30 AM time slot.

The average number of students arriving at the 10:30 AM time slot is, λ = 3.

A random variable representing the occurrence of events in a fixed interval of time is known as Poisson random variables. For example, the number of customers visiting the bank in an hour or the number of typographical error is a book every 10 pages.

The random variable X is also a Poisson random variable because it represents the fixed number of students arriving at the 10:30 AM time slot.

The random variable X follows a Poisson distribution with parameter λ = 3.

The probability mass function of X is given by:

$P(X=x)=\frac{e^{-\lambda}\lambda^{x}}{x!};\ x=0,1,2,3...,\ \lambda>0$

Compute the probability of X = 2 as follows:

$P(X=2)=\frac{e^{-3}3^{2}}{2!}=\frac{0.0498\times 9}{2}=0.2241$

Thus, the probability that in a randomly selected office hour in the 10:30 am time slot exactly two students will arrive is 0.2241.

6 0

3 years ago

Read 2 more answers

If you are picking a number between one and 20 what is the probability that you will pick a number greater than 14 or less than

Korvikt [17]

Answer:

5 because that my favorites number no cap

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3 years ago

Mary and Frank combine the marbles into one bag to do an experiment where they pick a marble from a bag and toss a coin. In the

Strike441 [17]

Answer:if We should put it in a decimal it’s 0.1 as a fraction it’s 11/110

Step-by-step explanation: You have to add all the numbers from the table and then add 11 wich makes it 11/110 you also add 11 beacahss it’s how many times yellow has landed on tails hope I am right

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2 years ago

Classify each pair of labeled angles as complementary, supplementary, or neither.

stiv31 [10]

Answer:

Step-by-step explanation:

A) neither since the angles add to 179 deg.

B) neither since 63 + 47 = 110.

C) complementary since 61 + 29 = 90

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2 years ago