Easton earned a grade of 75% on his multiple choice science final that had a total of 200 problems

Determine the mean and variance of the random variable with the following probability mass function. f(x)=( 729divided by 91) (1 divided by 9) superscript x baseline comma x equals 1,2,3 round your answers to three decimal places (e.g. 98.765).

The following division is being performed using multiplication by the reciprocal find the missing numbers is 5/12 divided by x/3 equals 5/12 times x/10 equals 1/x

How long does it take natsumi to clean up after she is done? table: .area time30. 245. 2.7560. 3.5