9 (4x-3y - 2 )= 36x-274-18
True or False ?

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) .

Proving the congruent supplements theorem

Kate has 50 quarters and dimes. she has a total of $9.80. how many dimes that she have?