Astudent purchases 6 different colored folders for her classes (red, blue, yellow, green, purple, and black). she randomly chooses two folders to use for her first two classes. what is the probability that her first choice is red and her second choice is blue?

Asquare has a side that measures 11 units. what is the area of a circle with a circumference that equals the perimeter of the square? use 3.14 for π, and round your answer to the nearest hundredth. 1519.76 units2 379.94 units2 616.56 units2 154.14 units2

Find the dimensions of the circle. area = 64π in.² r= in.

You just purchased two coins at a price of $670 each. because one of the coins is more collectible, you believe that its value will increase at a rate of 7.1 percent per year, while you believe the second coin will only increase at 6.5 percent per year. if you are correct, how much more will the first coin be worth in 15 years?