Write an expression that can be used to solve the problem.

during practice, it took shawn 27 min to swim 81 laps.

if shawn swam at a constant rate, how long did it take him to complete each lap?

a. 27 x 81

b. 27+81

c. 81/27

d. 27/81

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.

Prove that 16^4-2^13-4^5 is divisible by 11.

Find the center of the circle that can be circumscribed about efg with e(4,4) f(4,2) g(8,2)