Subtract: 3x + 7y − 3z from 5x − 7y + 6z

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?