In a bag, a child has 325 coins worth $19.50. there were three types of coins: pennies, nickels, and dimes. if the bag
contained the same number of nickels as dimes, how many of each type of coin was in the bag?

In the diagram of circle o, what is the measure of zabc?

Aschool allots ? 1500 to spend on a trip to the theatre. theatre tickets have a regular cost of ? 55 each and are on offer for 1 5 off. a train ticket for the day will cost ? 12 each. if 2 teachers and the maximum number of students attend, how much money will the school have left over?

Find the area of the surface obtained by rotating the curve z=4e^2y from y = 0 to y =1 about the y-axis. the area is square units