Given a circle with a diameter of 4, which equation expresses π as the ratio of the circumference of a circle to its diameter?

Ten times the square of a non-zero number is eqaul to ninety times the number

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3

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?