Use the formula for tan(a + b) to prove that: tan(45° +B) =1+tanB÷1-tanB​

Name the most appropriate metric unit for each measurement like a length of an carrot

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) .

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package