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Amiraneli [1.4K]
3 years ago
13

Each of a regular polygon is 140°,find the number of the sides that ghe polygon has​

Mathematics
2 answers:
Sloan [31]3 years ago
5 0

Answer:

the answer should be 360/36=10 sides

Step-by-step explanation:

A regular polygon is 144 deg the exterior angle is 36 deg.

Troyanec [42]3 years ago
4 0

Answer:

9 sides

Step-by-step explanation:

Internal angles of the regular polygon have a property, sum of interior angles is equal to:

  • sum = (n-2)*180°

n sides each interior angle equal to 140°, then

  • sum = 140°n

Comparing the two equations:

  • (n-2)*180= 140n
  • 180n - 360 = 140n
  • 40n = 360
  • n = 360/40
  • n = 9

The polygon has 9 sides

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2 years ago
what is the critical f-value when the sample size for the numerator is six and the sample size for the denominator is four? use
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The critical f-value when the sample size for the numerator and the  denominator is given using a two-tailed test will be 0.12 and 14.88.

We have,

The sample size for the numerator = 6,

i.e.

Numerator degree of freedom = 6 - 1 = 5,

And,

The sample size for the denominator = 4,

i.e.

Denominator degree of freedom = 4 - 1 = 3

And,

We have to use a two-tailed test,

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The significance level = \frac{0.10}{2} = 0.05

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Now,

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Using the F-table at significance level 0.05 and check for given degrees of freedom,

We get,

Critical f-values : 0.12 and 14.88

Hence, we can say that the critical f-value when the sample size for the numerator and the  denominator is given using a two-tailed test will be 0.12 and 14.88.

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