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andreyandreev [35.5K]
2 years ago
5

How to calculate the mean in statistics?​

Mathematics
2 answers:
Ann [662]2 years ago
8 0

to calculate mean in statistics you should have to found by adding all the numbers together and dividing by the number of items of sets .

example = 10+10+20+40+70/5 = 30

or

  1. you can use this formula=

OlgaM077 [116]2 years ago
7 0

I think the answer is ....

add together all of the number in a set and then divide the sum by the total count of number

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Point B has coordinates ​(1​,2​). The​ x-coordinate of point A is negative 8. The distance between point A and point B is 15 uni
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Answer:

The point A will be  (-8,14) or (-8,-10).

Step-by-step explanation:

Point B has coordinates (1,2) and the x-coordinate of point A is - 8.

Let us assume that the coordinates of point A are (-8,k).

Now, given that the point A is 15 units apart from point B.

Therefore, from the distance formula, we can write that  

\sqrt{(1 - ( -8))^{2} + (2 - k)^{2}} = 15

Now,squaring both sides, we get  

(1 - ( -8))^{2} + (2 - k)^{2} = 225

⇒ (2 - k)^{2} = 225 - 9^{2} = 144

⇒ 2 - k = ± 12

⇒ k = 14 or -10.

Therefore, the point A will be  (-8,14) or (-8,-10). (Answer)

We know that the distance between two points on the coordinate plane (x_{1}, y_{1}) and (x_{2}, y_{2}) is given by  

\sqrt{(x_{1} - x_{2})^{2} + (y_{1} - y_{2})^{2}}.

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3 years ago
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gulaghasi [49]
The answer is A!

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Answer:

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Step-by-step explanation:

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Vlada [557]
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nirvana33 [79]

Answer:

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Step-by-step explanation:

Step 1:

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54 Stars

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3 years ago
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