Solve each equation for (0º 2 cos2x+ 3 cos x - 2 = 0
a. 60°, 120
b. 30°, 150
C. 30, 330
d. 60°, 300
Please select the best answer from the choices provided

Given a normal distribution with µ =50 and σ =4, what is the probability that 5% of the values are less than what x values? between what two x values (symmetrically distributed around the mean) are 95 % of the values? instructions: show all your work as to how you have reached your answer. don’t simply state the results. show graphs where necessary.