If A = 2x – y + 3xy, B = x + 2xy and C = 3y + xy, find the value of A + B + C

An angle that measures between 90 and 180° is called a(,

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers