which of the following are true statements? 1. the standard deviation is the square root of variance 2. the standard deviation is zero only when all values are the same 3. the standard deviation is strongly affected by outliers

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

Which equation matches the graph shown ?

What is the solution to this system of equations? y= 2x - 3.5 x - 2y = -14