Answer all of these question for brain who will answer first? lets

1. whats 2/3 plus 1/9 2. 5/7 plus 1/2 3.7/15 plus 2/15

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) .

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.