What is the decimal value of the 2 in the hexadecimal number f42ac16?

Statement: if two points are given, then exactly one line can be drawn through those two points. which geometry term does the statement represent? defined term postulate theorem undefined term

The length of each stair is 11 inches. what is the rise, r, for each stair? round to the nearest inch. 2 inches 7 inches 17 inches 24 inches

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.