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Len [333]
2 years ago
6

How do you find the circumference of a circle??​

Mathematics
2 answers:
Phoenix [80]2 years ago
4 0

Answer:

how do you find the circumference of a circle??

C=2πr

C=2πr

Alexxx [7]2 years ago
4 0

Answer:C=2πr

Step-by-step explanation: yww

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AARP reported on a study conducted to learn how long it takes individuals to prepare their federal income tax return (AARP Bulle
Crank

Answer:

Confidence interval: (30.1,36.9)

Step-by-step explanation:

We are given the following data set:

35.3,30.5,37.4,26.5,13.0,49.9,28.8,44.0,61.6,0.5,40.5,34.9,47.9,36.6,24.1,39.8,47.8,18.5,36.6,39.2,14.5,37.3,40.5,49.3,45.5,28.3,19.5,5.6,52.6,41.4,45.3,39.0,33.7,29.4,14.5,40.1,33.7,36.9,5.6,33.7

Formula:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n-1}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.  

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean =\displaystyle\frac{1339.9}{40} = 33.5

S.D = 11(given)

n = 40

Confidence interval:

\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}

Putting the values, we get,

z_{critical}\text{ at}~\alpha_{0.05} = 1.96

33.5 \pm 1.96(\frac{11}{\sqrt{40}} ) = 6.34 \pm 3.4 = (30.1,36.9)

6 0
3 years ago
Complete the solution of the equation. find the value of y when x equals to 1<br><br> 9x-5y=29
aksik [14]

Answer:

9x - 5y = 29

9*1 - 5y = 29

-5y = 20

y = -4


8 0
3 years ago
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Solve for W.<br> 2=LW<br> Nnnnnnnnnnnnnnnnn
Anna11 [10]

Answer: W = 2/L

Isolate the variable by dividing each side by factors that don't contain the variable.

7 0
3 years ago
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Michelle will be 72 years old in eighteen years. How old is Michelle now? A. 90 years old B. 54 years old C. 36 years old D. 49
Katen [24]
Subtract 18 from 72 to get Michelle's current age.

72 - 18 = 54
5 0
3 years ago
Read 2 more answers
25% = degrees of 360
s2008m [1.1K]

Answer:

90^o

Step-by-step explanation:

<u>Step 1:  Multiply </u>

<u />0.25 * 360^o

90^o

Answer:  90^o

4 0
3 years ago
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