Select all equations that can result from adding these two equations or subtracting one from the other.
x + y = 12
3x - 5y = 4
-2x - 4y - 8
-2x+6y=
4x - 4y = 16
4x + 4y - 16
2x-by-8

Add or subtract polynomial : –12qr? +13rq?

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

Find the solution on the interval [0, 2pi)