if there are 39 people in a room and everyone has to shake hands with everyone exactly once, how many handshakes are there?

The area of a triangular sign is 48 ft. If the base of the sign is 16 feet, what is the height of the sign? The height of the sign is feet.

The stem and leaf plot shows the monthly average wind speeds for a city

Nikki works as a cashier at the ABC grocery store. One day she checked out 36 people. Of the 36 people 9 were men. What percent of the people checked out were men?

Evaluate the exponential function f (x) = 8^x+1 Which value completes the table? A. 0 B. 3 C. 9 D. 25

James borrowed $140 at a simple interest rate of 12%. What did he pay the loan company at end of 9 months? What was the interest?

a truck traveled 8 hours at an average speed of 55 mph. how far did the truck travel? (distance = rate x time)

Darla drives at a constant speed of 45 miles per hour. a. If she drives for y miles and it takes her x hours, write the two-variable equation to represent the number of miles Darla can drive in x hours b.

Substitute x=5 and y = 7 for the algebraic expression 24x-3) + 6 (3y-5) and evaluate the expression

In a region there is a. 95 probability chance that a randomly-selected person of the population has brown eyes assume 12 people are randomly selected

4b - 5 = - t, solve for b