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melanis52
30.06.2019 •
Mathematics
What is the average of these numbers 23 33 31?
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Ответ:
29
Step-by-step explanation:
It is important to know the definition.
The average of a set of number is defined as the sum of all these numbers divided by the total numbers that are in this set.
So, knowing this, we know that if we have a set of three numbers:"a", "b" and "c" , we can calculate the average of them with this procedure:
Therefore, we can calculate the average of the numbers 23, 33 and 31. This is:
Ответ:
r = 4.1231055
Step-by-step explanation:
So to do this, you need to find the distance between the two points:
(-7,1) and (1,3).
To do this, the distance or diameter (d) is equal to:
d = sqrt ((x2-x1)^2 + (y2-y1)^2)
In this case:
d = sqrt( (1 - (-7))^2 + (3 - 1)^2 )
d = sqrt( 8^2 + 2^2)
d = sqrt( 64 + 4)
d = sqrt( 68 )
The radius is half of the diameter, so:
r = 1/2 * d
r = 1/2 * sqrt( 68 )
r~ 4.1231055