Six people met at a dinner party, and each person shook hands once with everyone there. which expression represents the total number of handshakes?

How many rectangular prisms can be made with 18 unit cubes?

How do you write (3/4) as a fraction

Tomas works as an underwater photographer. He starts at a position that is 13 feet below sea level. He rises 6 feet, then descends 15 feet to take a photo of a coral reef.

Estimate the sum or the product. 1. 1.52 (98) 2. 2.04 (3.97) 3. 4.42+5.91

Evaluate n2+5 when n=3.

In 2 hours a candymaker can produce 80 boxes that each contain 10 pieces of candy. How many pieces of candy does the candymaker produce in 6 hours?

What is the answer to 3 3/8 - 1 5/6=

Solve for x. 6 (x+1) - 2x-1 = (x+15) + (x+16) ?

3*3 - 3 - 3:3 - 3 - =

A bicyclist travels at a rate of 13 miles an hour. If the bicyclist continues at this rate, how many miles can the bicyclist travel in 0.5 hour?