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Yuliya22 [10]
3 years ago
14

Please help me I really don't understand

Mathematics
2 answers:
sveticcg [70]3 years ago
6 0

Answer:

Step-by-step explanation:

goblinko [34]3 years ago
5 0
The answer to the problem is 255
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What is 113.097335529 in terms of pi
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36\pi
You would take 113.087335529 and divide by pi
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Find the square root of 1.21
OleMash [197]
11/10 or 1.1 is the correct answer.
8 0
3 years ago
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For a population, the mean is 19.4 and the standard deviation is 5.8. Compare the mean and standard deviation of the following r
Ksivusya [100]

Answer:

The mean of sample (21.6) is greater than population mean and the standard deviation of sample (8.4) is also greater than population standard deviation.

Both values, mean and std are greater than corresponding population values. This means, that our sample overestimates or is skewed to the right in the values of population. Also each specific value is farther apart from the mean so variation is much bigger in our sample than in our population.

Step-by-step explanation:

To calculate the mean, we estimate the avergage of the data as

Mean = Sum(data)/n

Where n is the number of observations of sample. We have;

(25 + 32 +  16 + 12 + 11 + 38 + 22 + 21  + 19 + 20)/10 = 21.6

The standard deviation is the square root of variance. Variance is sum of the deviation of each data point to the sample mean.

Variance = sum i= 1 to n (Xi-xmean)/(n-1)

Where n = 10 the # of observations and xi is each specific data point.

If you calculate it in Excel or or by hand you obtain:

Variance = sum i= 1 to n (Xi-21.6)/(10-1) = 8.4

Both values, mean and std are greater than corresponding population values. This means, that our sample overestimates or is skewed to the right in the values of population. Also each specific value is farther apart from the mean so variation is much bigger in our sample than in our population.

5 0
3 years ago
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An airplane is flying from New York City to Los Angeles. The distance it travels in miles, d, is related to the time in seconds,
gavmur [86]
We have been given an equation that represents the distance an airplane travels in Miles (d) is related to the time in seconds (t).

A. Upon substituting t=1 in our equation we will get,





We can see that our plane is travelling at rate of 0.15 miles per second.



Therefore, plane is flying at the rate of 0.15 miles per second.

B. To find distance traveled by airplane in 30 seconds we will substitute t=30 in our given equation.



 

Therefore, plane will travel 4.5 miles in 30 seconds.

C. To find time it will take to travel 12.75 miles we will substitute d=12.75 in our given equation.







Therefore, plane will take 85 seconds to travel 12.75 miles.

Read more on Brainly.com - brainly.com/question/11521321#readmore
8 0
3 years ago
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