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givi [52]
2 years ago
9

Please answer the 2 question l will mark as brainiest

Mathematics
2 answers:
Rama09 [41]2 years ago
7 0

Answer:

1. 66.48

2. 12.57

Step-by-step explanation:

Formula is A = ㅠr^2

The radius is that half line :))

N76 [4]2 years ago
3 0

Answer:

1. A=πr2=π·4.62≈66.4761

A≈66.48

2. A=πr2=π·22≈12.56637

A≈12.57

please mark as brainiest

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If each interior angle of a regular polygon measures ​120 , how many sides does the polygon​ have?
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If f(t)=3t^2+11 find f(7)
tamaranim1 [39]

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f(7) = 158

Step-by-step explanation:

To evaluate f(7) substitute t = 7 into f(t)

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3 years ago
Describe the sampling distribution of p(hat). Assume the size of the population is 30,000.
Naya [18.7K]

Answer:

a) \mathbf{\mu_ \hat p = 0.6}

b) \mathbf{\sigma_p =0.01732}

Step-by-step explanation:

Given that:

population mean \mu = 30,000

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population proportion p = 0.6

a)

The mean of the the sampling distribution is equal to the population proportion.

\mu_ \hat p =  p

\mathbf{\mu_ \hat p = 0.6}

b)

The standard deviation of the sampling distribution can be estimated by using the formula:

\sigma_p = \sqrt{\dfrac{p(1-p)}{n}}

\sigma_p = \sqrt{\dfrac{0.6(1-0.6)}{800}}

\sigma_p = \sqrt{\dfrac{0.6(0.4)}{800}}

\sigma_p = \sqrt{\dfrac{0.24}{800}}

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7 0
2 years ago
Multiply and simplify<br><br><img src="https://tex.z-dn.net/?f=35%20%5Ctimes%20%20%5Cfrac%7B7%7D%7B10%7D%20" id="TexFormula1" ti
Kobotan [32]

We can convert 7/10 to a decimal first.

7/10 = 0.7

Now we can multiply this problem easier.

35 x 0.7 = 24.5

6 0
3 years ago
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