The grades in a particular class are normally distributed so that 99.7% of grades fall into a certain range. The class has a mean grade of 77% and a standard deviation of 3%. Select all grades that fall into this range.

There may be more than one correct answer. Select all that apply.

a. 90
b. 70
c. 68
d. 66
e. 85
f. 88
g. 60

If 90° < θ < 180° and cotθ = -1/3, then cscθ =

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. release your mouse button when the item is place. if you change your mind, drag the item to the trashcan. click the trashcan to clear all your answers. solve this quadratic equation using the quadratic formula. 2x2 - 2x=1 need asap