John bow 27 packets of paper plates, costing £52.65, for a dinner party that he was hosting. his wife reminded him that he should have bought 35 packets to cater everyone who was coming. how much would this have cost?

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).

Which of the following is the shape of a cross section of the figure shown below

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.