Determine whether ab and cd are parallel, perpendicular, or neither. a (6,2) b(2,-2) c(-1,-4) d(5,2)

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Which value of c would make he following expression completely factored? 8x+cy

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