If nine people are in a room and every person shakes hands exactly once with each of the other people, how many handshakes will occur

Isabella constructed a cylindrical vase that has a volume of 63 cubic centimeters. Jasonbconstructed a cone that had the same height and the same radius as Isabella cylinder. what is the volume

The admission at an ice hockey game is 8$ for adults and 5$ for children. A total of 330 tickets were sold. How many tickets were sold to children and how many to adults if a total of 2244$ was collected?

If you stand on a ship in a calm sea, then your height x (in feet) above sea level is related to the farthest distance y (in miles) that you can see by the equation: y=sqrt (1.5x + (x/5280) ^2) how high up do you have to be to be able to see 10mi?

In the game, "Rock, Paper, Scissors", what is the probability that your opponent will choose "Rock"?

Finf the exact value of sin A and cos A where a = 9 and b = 10 and

I have two consecutive odd integers. Their sum is 16. What is the smaller integer?

How do you evaluate lim (x->0) sin (9x) / 6x?

What are the values of x and y? 2x+3y=15.5 x+y=6

Kevin can travel 22 1/2 miles in 1/3 hours. What is the average speed in miles per hour

Two equal ratios are called a