Find the general real-valued solution to the following differential equations. you should do one of them using complexification (you may pick (you do not have to give the sinusoidal portion of your answer as a single sine function, although you will be asked to do so on the exam) a. y" + 8y 5. ,, + 15v = cost b. y"-3y' = 2e, sin(21)

Amonument at a park is in the shape of a right square pyramid. a diagram of the pyramid and its net are shown. what is the surface area of the monument? enter the answer in the box. m²

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) .

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal