C+6. * At a party 28 handshakes were
exchanged. Each person shook hands
exactly once with each of the others.
How many people were at the party?

If i have a 24 in loaf of bread and i cut it into two pieces one 9 in how long was the other

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Gravel is being dumped from a conveyor belt at a rate of 25 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. how fast is the height of the pile increasing when the pile is 14 ft high? (round your answer to two decimal places.) ft/min