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NeTakaya
3 years ago
13

The formula for the circumference of a circle is C = 2πr, where r is the radius. Rearrange the formula to solve for r and select

the correct option below. . . .
1.) r = C over 2 pi.
2.) r = 2πC.
3.) r = C − 2π.
4.) r = 2 pi over C
Mathematics
2 answers:
ladessa [460]3 years ago
7 0

Answer: 1) r = C over 2 pi

mamaluj [8]3 years ago
6 0
The circumference of a circle is:
C = 2 π r   /: 2 π  ( we will divide both sides of an equation by 2 π )
C / 2π = r
Answer: 1) r = C over 2 pi
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mixas84 [53]

Answer:

No instead of doing multiplication u did division

Step-by-step explanation:

This equation is called distributive property where u multiply the answer from the outside by the inside number

4 0
3 years ago
A health research institute collects information from 20 individuals on the number of years they have spent smoking cigarettes,
olga55 [171]

The correlation coefficient of the health research institute data measures the relationship between the age and the years of the smokers

The correlation coefficient is 0.53

<h3>How to calculate the correlation coefficient</h3>

The correlation coefficient (r) is calculated as:

r = \frac{n(\sum xy) - \sum x \sum y}{\sqrt{[n \sum x^2 - (\sum x)^2][n\sum y^2 - (\sum y)^2}}

Using the given parameters, we have:

r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1257^2][20 * 836 - 116^2}}

Evaluate the exponents

r = \frac{20 *8249 - 1257* 116}{\sqrt{[20 * 98823 - 1580049][20 * 836 - 13456}}

Evaluate the products

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Evaluate the differences

r = \frac{19168}{\sqrt{[396411*3264}}

Evaluate the product

r = \frac{19168}{\sqrt{1293885504}}

Evaluate the root

r = \frac{19168}{35970.6}

Evaluate the quotient

r = 0.53

Hence, the correlation coefficient is 0.53

Read more about correlation coefficient at:

brainly.com/question/1564293

8 0
2 years ago
4x² = 32 What does x equal
babymother [125]

So here is what you would do:

lets just pretend that there is no x in the equation

so this is what the equation would look like:

first, is 4 to the power of 2=16 and now we are going to put the x back into the equation so: 4x to the power of 2, but we did the exponents so, now x is the missing number. We can use the 32 because it is the solution to the equation. So we would do 32-16=16 so the missing number is 16 so x=16

Answer: x=16

4 0
3 years ago
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Arte-miy333 [17]

Answer:1526.81

Step-by-step explanation:

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tensa zangetsu [6.8K]

What’s your question?

6 0
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