True or false? the sum of the differences 2 (x r) is never zero for any distribution consisting of n observations.

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

What is always true when two whole numbers are subtracted?

The value of cos 30° is the same as which of the following?