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Firdavs [7]
2 years ago
11

Find the circumference of a circle with diameter,

Mathematics
1 answer:
Elena L [17]2 years ago
3 0

Answer:

Step-by-step explanation:

The circumference of the circle is 2\pi r or \pi d

Where r is the radius and d is the diameter. The diameter is 24cm and the radius being half the length of the diameter is 12cm.

So the circumference = 2*\pi*r = \pi*24 = 24\pi

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Suppose that a study of elementary school students reports that the mean age at which children begin reading is 5.9 years with a
Bas_tet [7]

Answer:

5.9 years.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In this question:

Mean of the population is \mu = 5.9

If a sampling distribution is created using samples of the ages at which 69 children begin reading, what would be the mean of the sampling distribution of sample means?

By the Central Limit Theorem, the same population mean, of 5.9 years.

3 0
3 years ago
Write the algebraic expression for 5 groups of x
Nadusha1986 [10]

Answer:

5x

Step-by-step explanation:

8 0
3 years ago
Help me plz! Thank you!
saw5 [17]

Answer:

the vertical line test proves that it is not a function because there are two y values for 1 x value

Step-by-step explanation:

5 0
3 years ago
45 points If you help me with these please ?????ASAP
Nata [24]

Answer:

Step-by-step explanation:

the first graph has points (-1, -1) and (2, -2)

slope m = (y2-y1) / (x2-x1) = (-1+2)/ (-1-2) = 1/-3 = -1/3

the second graph has points (0, -3) and (2, 0)

slope m = (y2-y1) / (x2-x1) = (-3-0)/ (0-2) = -3/-2 = 3/2

for the table

x.         y

-3.        4

0.        1

slope m = dierence in y /diference in x = 4-1 / -3-0 = 3/-3= -1

5 0
3 years ago
What is a external factor
LenaWriter [7]

Answer:

External factors that affect an organization may be political, economic, social or technological. The same internal factors that lead to an organization's success inevitably characterize that organization's relationship to the external environment in these broad areas.

Step-by-step explanation:

4 0
3 years ago
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