The probability distribution of a random variable x is given below. x 2 4 6 8 9 p(x = x) 5⁄27 1⁄9 10⁄27 2⁄27 7⁄27 given the mean find the variance (var(x)) and the standard deviation, respectively.

Me. drysdale earned 906.25 in interest in one year on money that he had deposited in his local bank if the bank paid an interest rate of 6.25% how much money did mr. drysdale deposit

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

How many grams the dog will eat in 3 days?