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2 years ago

A cylinder has a volume of 45pi and a radius of 3. What is it’s height?

Mathematics

1 answer:

Svetllana [295]2 years ago

8 0

Answer:

<h2> It’s height is <u> 5 </u> units.</h2>

Step-by-step explanation:

$V=\pi R^2\cdot H\\\\V=45\pi\\R=3\\H=??\\\\45\pi=\pi\cdot3^2\cdot H\\\\45=9H\\\\H=5$

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solniwko [45]

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2 years ago

The number of failures of a testing instrument from contamination particles on the product is a Poisson random variable with a m

photoshop1234 [79]

Answer: 0.1353

Step-by-step explanation:

Given : The mean of failures = 0.025 per hour.

Then for 8 hours , the mean of failures = $\lambda=8\times0.25=2$ per eight hours.

Let X be the number of failures.

The formula to calculate the Poisson distribution is given by :_

$P(X=x)=\dfrac{e^{-\lambda}\lambda^x}{x!}$

Now, the probability that the instrument does not fail in an 8-hour shift :-

$P(X=0)=\dfrac{e^{-2}2^0}{0!}=0.1353352\approx0.1353$

Hence, the the probability that the instrument does not fail in an 8-hour shift = 0.1353

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3 years ago

What does an r valuable of -0.89 suggest about two variables?

satela [25.4K]

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2 years ago

Compare the values of each 3 in the number 633,248

ipn [44]

633,248.
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3 years ago

B=3/a+2 make a the subject

katen-ka-za [31]

Answer:

Solve for a

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Step-by-step explanation:

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2 years ago