What is the sum of the first five terms of a geometric series with a1 = 10 and r = 1/5? express your answer as an improper fraction in lowest terms without using spaces.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Which of the following contains a variable?

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height