A doctor believes that the variance in muscle mass of a person who does not binge drink is greater than that of a person who binge drinks. Let oſ represent the population
variance in muscle mass of a person who does not binge drink.
State the null and alternative hypotheses for the test.

Which of the following is a justification used while proving the similarity of triangles lom and mon

Mary beth used the mapping rule to find the coordinates of a point that had been rotated 90° counterclockwise around the origin. examine the steps to determine whether she made an error. m (3, –6) is rotated 90° counterclockwise. (x, y) → (–y, x) 1. switch the x- and y-coordinates: (6, –3) 2. multiply the new x-coordinate by –1: (6(–1), –3) 3. simplify: (–6, –3) .

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2