Abag has 6 yellow marbles and 6 brown marbles. half of the brown marbles are made of plastic. a marble is selected at random from a bag. what is the probability that is is a brown, plastic marble! write your answer as a fraction is simplest form

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

What describes horizontal cross section of the right rectangle 6m 8m 5m

X2 + y 2 = 36 x + y = 6 solve the system of equations.