Simplify the imaginary number square root -8

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

How can you tell when x and y are not directly proportional?

Another type of subtraction equation is 16-b=7. explain how you would sole this equation then solve it.