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Anarel [89]
3 years ago
15

when a boy complete 5 rounds around circular pond, he covers a distance of 1100 m. i)Find the perimeter of the pond.​

Mathematics
2 answers:
Law Incorporation [45]3 years ago
8 0
I think it’s 220m. Since 5 rounds are equal to 1100m then you divide by 5 to see how much he covers in one
Ludmilka [50]3 years ago
8 0

The perimeter of circular pond is 1100 m

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Answer:

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Answer:

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And we can find this probability with the complement rule:  

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Step-by-step explanation:

Previous concepts  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem  

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Where \mu=10 and \sigma=2  

We are interested on this probability  

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And the best way to solve this problem is using the normal standard distribution and the z score given by:  

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If we apply this formula to our probability we got this:  

P(X>8)=P(\frac{X-\mu}{\sigma}>\frac{8-\mu}{\sigma})=P(Z>\frac{8-10}{2})=P(Z>-1)  

And we can find this probability with the complement rule:  

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Step-by-step explanation:

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