Asecret code must consist of three capital letters followed by a digit. letters cannot be repeated. how many secret codes are possible?

A80-foot piece of siding is cut into three pieces so that the second piece is four times four times as long as the first piece and the third piece is five times as long as the first piece. if x represents the length of the first piece, find the lengths of all three pieces.

To prove p is equal to q using an indirect proof what would your starting assumption be?

What is the solution set of the quadratic inequality x^2-5< or equal to 0