Here are Xavier's bowling scores: Skip
135, 140, 130, 190, 112, 200, 185, 172, 163, 151,
149
What is the standard deviation rounded to the
nearest tenth?

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

A(t)=728(1+0.04)^t how much money did aditya originally invest

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?