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Mnenie [13.5K]
3 years ago
12

What is the approximation for the area of this circle? Use 3.14 to approximate pi. 12.6m 25.1m 50.2m 158.0m

Mathematics
2 answers:
Semenov [28]3 years ago
8 0

Answer:

You times pi by the diameter

first set of answers are

1. 5.1

2 56.5

3 25.1

4 34.5

5 9.4

You times pi by r^2

second set of answers are

1 28.3

2 254.3

3 78.5

4 50.2

5 30.2

erma4kov [3.2K]3 years ago
5 0

Answer:

Hoi icey, its rukaiya

Step-by-step explanation:

Im bord... lol

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Step-by-step explanation:

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8 0
2 years ago
A data set is shown below. { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 } Which of the following best represents a measure of ce
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Step-by-step explanation:

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2 years ago
In order to estimate the average time spent on the computer terminals per student at a local university, data were collected fro
VladimirAG [237]

Answer:

Margin of error  for a 95% of confidence intervals is 0.261

Step-by-step explanation:

<u>Step1:-</u>

 Sample n = 81 business students over a one-week period.

 Given the population standard deviation is 1.2 hours

 Confidence level of significance = 0.95

 Zₐ = 1.96

Margin of error (M.E) = \frac{Z_{\alpha  }S.D }{\sqrt{n} }

Given n=81 , σ =1.2 and  Zₐ = 1.96

<u>Step2:-</u>

<u />Margin of error (M.E) = \frac{Z_{\alpha  }S.D }{\sqrt{n} }<u />

<u />Margin of error (M.E) = \frac{1.96(1.2) }{\sqrt{81} }<u />

On calculating , we get

Margin of error = 0.261

<u>Conclusion:-</u>

Margin of error  for a 95% of confidence intervals is 0.261

<u />

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3 years ago
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7 0
3 years ago
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Finding the missing angle measure
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