Element x decays radioactively with a half life of 11 minutes. if there are 220 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 32 grams? y=a(.5)t/h ?

Point a is located at (0, 4), and point c is located at (−3, 5). find the x value for the point b that is located one fourth the distance from point a to point c. −0.25 −0.5 −0.75 −1

Solve the equation - 2(m -30) = -6m a-15 b-13 c-8 d8

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.