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joy8348
22.06.2021 •
Mathematics
Determine the distance between points (x1, y1) and point (x2, y2), and assign the result to point Distance. The calculation is:
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Ответ:
Given:
The two points are
and
.
To find:
The distance between given points.
Solution:
Plot the two points
and
randomly randomly on a coordinate plane, then form a right angle triangle as shown in the below figure.
Now, the hypotenuse is the distance between the two points.
Using Pythagoras theorem,
Taking square root on both sides, we get
Therefore, the distance between the two points is
. It is also known as distance formula.
Ответ:
The empirical rule states that approximately 68% of a normal distribution falls within one standard deviation of the mean, or
Now, since the distribution is symmetric about the mean, you have
So,
More precisely, this probability is around