Find the square root of 248 by long division method

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) .

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?