Show that the sum, over the set of people at a party, of the number of people a person has shaken hands with, is even. assume that no one shake his or her own hand.

Which is better? $5 off a $28 dollar item or 20% off a $28 item?

What is the least common denominator of 5/2 and 3/5

The highest spending for food occurred in

Simplify 6 - 3 (4 - 3x) 0 - 3x - 6 09x - 6 0 9x + 18

Vince learned a total of 12 appetizer recipes over the course of 6 weeks of culinary school. After 10 weeks of culinary school, how many total appetizer recipes will Vince know? Assume the relationship is directly proportional.

Describe the house around 678 to the nearest hundred

Find the volume of a pyramid with a square base, where the perimeter of the base is 12.8 m and the height of the pyramid is 17 m. Round your answer to the nearest tenth of a cubic meter.

The area of a trapezium shaped field is 480m^2, the distance between two parallel Sides 15 m and one of the parallel sides is 20m. Find the other parallel side I will mark as brain lies

Chemists measure the acidity of an aqueous solution using pH. The pH is pH=-log-10[H^+] where pH is a measure of hydrogen ion concentration [H^+] measured in moles of hydrogen per liter of a solution. Find the pH of a solution if [H^+]=5.5x10^-12.

I think of a number, multiply it by 2, subtract 5 and multiply the result by 3 Write it as a algebraic question and any number being x