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3 years ago

Estimate the value of \frac{\sqrt{2\pi }}{\sqrt{5}}

Mathematics

1 answer:

Butoxors [25]3 years ago

3 0

Answer:

the exact answer is 1.98

if we rationalize denominator we get root 0f 10 times pi divided by 5

root of 10 is about 3.1 ( $\pi$ ) so we have $\frac{\pi ^{2} }{5}$ ≈ 9.6/5 = 1.92

Step-by-step explanation:

$\frac{\sqrt{2\pi }}{\sqrt{5}} * \frac{\sqrt{5 }}{\sqrt{5}}$ = $\frac{\sqrt{10} \pi }{5}$

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(W+4)(3w-2) please solveeed

Shkiper50 [21]

Step-by-step explanation:

${:}\longrightarrow$ $\sf (w+4)(3w-2)$

${:}\longrightarrow$ $\sf w(3w-2)+4 (3w-2)$

${:}\longrightarrow$ $\sf 3w^2-2w+12w-8$

${:}\longrightarrow$ $\sf 3w^2+10w-8$

7 0

3 years ago

Read 2 more answers

Solve for a 4/a+4= -1/a+9

Karolina [17]

Answer:

a = -8

Step-by-step explanation:

4/a + 4 = -1/a + 9

-1(a + 4) = 4(a + 9)

-1a - 4 = 4a + 36

-5a - 4 = 36

-5a = 40

a = -8

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3 years ago

Brad can bicycle at a rate of 55km/h. What is his speed in feet per second?

Brrunno [24]

55km/60minuess=0.916km per min. 0.916/60second=0.01527km per sec. convert km to feet. which is 50 feet. your answer is 50 feet per second

3 0

4 years ago

true or false If x represents a random variable with mean 114 and standard deviation 40, then the standard deviation of the samp

Goshia [24]

Answer:

$\mu = 114, \sigma = 40$

We also know that we select a sample size of n =100 and on this case since the sample size is higher than 30 we can apply the central limit theorem and the distribution for the sample mean would be given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And the standard deviation for the sampling distribution would be:

$\sigma_{\bar X}= \frac{40}{\sqrt{100}}= 4$

So then the answer is TRUE

Step-by-step explanation:

Let X the random variable of interest and we know that the true mean and deviation for this case are given by:

$\mu = 114, \sigma = 40$

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And the standard deviation for the sampling distribution would be:

$\sigma_{\bar X}= \frac{40}{\sqrt{100}}= 4$

So then the answer is TRUE

6 0

3 years ago

2 + 2= ?<br><br> Just answer this if ur bored

Galina-37 [17]

Answer:

Step-by-step explanation:

break the first 2 into its components, 1 and 1 because 1 + 1 = 2.
Break the second 2 into its components, 1 and 1 because 1 + 1 = 2.

Combine all the components. Since they're all ones, you just have to count your fingers 4 times!
1 + 1 = 2. 2 + 1 = 3. 3 + 1 = 4!
1 + 1 + 1 + 1 = 4!

4 is the correct answer.

5 0

2 years ago