What is completely factored form of 25x4-16y2

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) .

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Identify the number as a rational or irrational.explain. 127