-5x +4 - 4x = 40 please help me answer it

An eight-sided die, which may or may not be a fair die, has four colors on it; you have been tossing the die for an hour and have recorded the color rolled for each toss. what is the probability you will roll a brown on your next toss of the die? express your answer as a simplified fraction or a decimal rounded to four decimal places.

Sketch one cycle if the cosine function y=2cos2theta

The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?