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a_sh-v [17]
3 years ago
14

What is the circumference of a circle with a diameter of 12 m

Mathematics
1 answer:
Angelina_Jolie [31]3 years ago
6 0

Answer:

C = 37.68 (using 3.14)

if you use a calculator you would get 37.69911184

Step-by-step explanation:

C = 2\pi r

C = 2(3.14)r

C = 6.28(6)

C = 37.68 (aprox)

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Find the slope of the line containing the pair of the points. (-10,9) and (-6,-9)
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Answer:

-9/4

Step-by-step explanation:

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3 years ago
Fast-food restaurants spend quite a bit of time studying the amount of time cars spend in their drive-throughs. Certainly, the f
melisa1 [442]

Answer:

For the 99th percentile, we have X = 206 seconds.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 138.5, \sigma = 29

99th percentile:

Value of X when Z has a pvalue of 0.99. So we use Z = 2.325

Z = \frac{X - \mu}{\sigma}

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For the 99th percentile, we have X = 206 seconds.

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2 years ago
20 POINTS!!!!!
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D'accord. Ainsi, la flèche ou le pointeur doit pointer dessus. Si ne pointe pas, que. Découvrez-le

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2 years ago
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