Septimus has a seven-sided coin. he turns it over from right to left in front of him, rotates it 3/7 turn clockwise, turns it over again in the same way, and then turns 1/7 anticlockwise. this is the same as a clockwise turn by which of the following? A. 2/7
B. 3/7
C. 4/7
D. 5/7

27 is what percent of 108? 27 is % of 108

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

An electrician cuts a 136 foot long piece of cable. one piece is 16 feet less than 3 times the length of the other piece. find the length of each piece