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3 years ago

A drum has a diameter of 10 inches. find the area of the top of the drum. use 3.14 for pi.

Mathematics

2 answers:

pickupchik [31]3 years ago

6 0

Answer: 78.5 inches

Step-by-step explanation:

Area = Pi x r x r

Diameter = 10 in

Radius = 5 in

314/100 x 5 x 5 = 314/4

314/4 = 78.5

= <u>78.5 inches</u>

icang [17]3 years ago

4 0

Answer:

My answer is 78.55

Step-by-step explanation:

I've given the steps. Hope it really helps

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Find all the powers of 3 that are in the range 3 through 1000

Ksivusya [100]

So just use a calculator but here goes
3^1=3
3^2=9
3^3=27
3^4=81
3^5=243
3^6=729

and 3^7 is 2187 which is excluded

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3 years ago

Write an expression to show k less than 3.5

Natalija [7]

Answer: k < 3.5
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3 years ago

If you roll a six sided die three times, how many possible outcomes are there?

Mkey [24]

Answer:

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Step-by-step explanation:

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3 years ago

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Is the part is 75 and the whole is 500 what is the percent

laiz [17]

Answer:

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Step-by-step explanation:

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3 years ago

According to insurance records, a car with a certain protection system will be recovered 95% of the time. If 800 stolen cars are

Lapatulllka [165]

Answer: Mean = 760

Standard deviation = 6.16

Step-by-step explanation:

Given : The number of trials: $n=800$

The probability that a certain protection system will be recovered : $p=0.95$

We know that the mean and standard deviation of binomial distribution is given by :_

$\text{Mean}=np$

$\text{Standard deviation}=\sqrt{np(1-p)}$ , where n is the number of trials and p is the probability of success.

Now, the mean and standard deviation of the number of cars recovered after being stolen is given by :-

$\text{Mean}=800\times0.95=760$

$\text{Standard deviation}=\sqrt{800\times0.95(1-0.95)}\\\\=6.164414002\approx6.16$

Hence, the mean is 760 and standard deviation is 6.16 .

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3 years ago