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2 years ago

Help plz..And No links!! I repeat No links!!

Mathematics

1 answer:

loris [4]2 years ago

3 0

Answer:

The answer is 276.32 square yards.

Step-by-step explanation:

To solve for the surface area of a cylinder, use the surface area of a cylinder formula, which is SA= 2 $\pi$ rh + 2 $\pi$ $r^{2}$ . However, instead of using ( $\pi$ ), 3.14 will be used.

Next, plug in the information from the question into the formula. The formula will look like SA= 2(3.14)(4)(7) + 2(3.14)( $4^{2}$ ). Then, solve the equation, and the final answer will be 276.32 square yards.

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Mile is obsessed with her new book she started. She read 185 pages in 2 days. If she keeps up this pace about how many pages wil

inna [77]

Answer:

462.5 pages

Step-by-step explanation:

You find out how many books she reads in 1 day then you can multiply it by 5 to get 5 days.

If she reads 185 in 2 days. Divide 185 by 2 to get 1 day.

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3 years ago

Find the variance of this probability distribution. Round to two decimal places.

attashe74 [19]

Answer:

Variance = 4.68

Step-by-step explanation:

The formula for the variance is:

$\sigma^{2} =\frac{\Sigma(X- \mu)^{2}}{N} \\or \\ \sigma^{2} =\frac{\Sigma(X)^{2}}{N} -\mu^{2} \\$

Where:

$X: Values \\\mu: Mean \\N: Number\ of\ values$

The mean can be calculated as each value multiplied by its probability

$\mu = 0*0.4 + 1*0.3 + 2*0.1+3*0.15+ 4*0.05=1.15$

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Replacing the mean and the summatory of X:

$\sigma^{2} = \frac{\Sigma(X)^{2}}{N} -\mu^{2} \\= 6 - 1.15^{2}\\= 4.6775$

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3 years ago

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Goshia [24]

Answer:

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Step-by-step explanation:

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zepelin [54]

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Answer:

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