Six people are standing in line for concert tickets. their average age is 27. the average age of the first four people in line is 23. the average age of the 3 people is 34. how old is the fourth person in line.

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

Which of these numbers of simulations of an event would be most likely to produce results that are closest to those predicted by probability theory? 15, 20, 5, 10