The diameter of a music cd is 12 centimeters find the circumference of a cd to the nearest tenth

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

The area of a circle is equal to 1 dm². find the radius of the circle.