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Sav [38]
3 years ago
14

A central angle of a circle is an angle whose vertex is anywhere inside the circle. True or False

Mathematics
2 answers:
zlopas [31]3 years ago
8 0
The answer is false - Apex
svlad2 [7]3 years ago
5 0
The answer is false because there is 360 degrees inside a circle and any part of that is an arc
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t is known that the population variance equals 484. With a 0.95 probability, the sample size that needs to be taken if the desir
PtichkaEL [24]

Answer:

The sample size needed to be taken is approximately 74.

Step-by-step explanation:

To get alpha; we have 1 - 0.95 = 0.05

Therefore, z_{\frac{a}{2} }  = \frac{0.05}{2}  = 0.025

The we look up z* in a Standard Normal table where α = 0.025 area in each tail.

From the table, z* = 1.96

From the question variance is 484, then the standard deviation is 22

Standard deviation = \sqrt{Var(x)}  = \sqrt{484}  = 22

And margin of error is 5 or less

The formula for margin of error is given as:

margin of error = \frac{(z^{*}) (SD)}{\sqrt{n} }

5 = \frac{1.96  * 22}{\sqrt{n} } \\5 = \frac{43.12}{\sqrt{n} } \\5 * \sqrt{n}  = 43.12\\(5)^{2}  * (\sqrt{n} )^{2} = (43.12)^2\\25 * n = 1859.3344\\25n =  1859.3344\\\frac{25n}{25}  = \frac{1859.3344}{25} \\n = 74.373376\\n = 74

The approximate value of n is 74.

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3 years ago
What is the total area of the garden?
Schach [20]
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Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

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Step-by-step explanation:

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1.≤

2.≤

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Step-by-step explanation:

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1. Find two whole odd numbers that 2.<br> add to give 4878
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2441 and 2437

Step-by-step explanation:

The two whole numbers are

2441 and 2437

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4 years ago
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