Let's check.
x = 5π/24
4x = 5π/6
cos 4x = cos(5π/6) = cos 150° = -√3/2
cos² 4x = (-√3/2)^2 = 3/4
4 cos² 4x -3 = 4 (3/4) - 3 = 0
Answer: TRUE
Answer:
x and y are the variables
4/8 = 1/2 so it is four eigths in one half. 4/8 simplified is 1/2
Y = 4/7x - 30/7
This is the equation you can obtain by using the slope and the point and solving y = mx + b for b. Then sub the slope and intercept into the equation.
