If you know the pythagorean theorem, then you can always find the distance between two points in the plane.

What is the value of the expression below? (81^2)^1/8

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) .

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120