Olve the system of linear equations by graphing. =3+3 - 2x - 3
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We have been given that the standard deviation of a group of 20 scores is 15 and we are asked to find variance.
Since we know variance is square of standard deviation. In order to find out the variance of the given data we have to take the square of 15.
Therefore, our variance is 225.
If the triangle is a right triangle, the pythagorean theorem would work
since it doesn’t, the triangle is NOT A RIGHT TRIANGLE
(see attached pic for work :))
since it doesn’t, the triangle is NOT A RIGHT TRIANGLE
(see attached pic for work :))