State the vertex of (x+4) (x-2) = 0

The mean of a set of data is -3.82 and its standard deviation is 2.31. find the z score for a value of 3.99.

The coordinate grid shows points a through k. which points are solutions to the system of inequalities listed below? 2x+ ys 10 2x 4y < 8 oa c, d, k o e, f. g, j oa, c, d, h, k oe, f. g, h, j

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent ?