You own 24 CDs. You want to randomly arrange 5 of them in a CD rack. What is the probability that the rack ends up in alphabetical order

What is the smallest integer n such that n\sqrt{2} is greater than 20

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?