Four people in a room. Each shakes hands with each other once. How many handshakes are there?

This week, conrad will work 1 3/4 times longer than last week. giovanni will work 1 1/3 times longer than last week. sally will work 2/3 the number of hours she worked last week. match each employee's name to the number of hours he or she will work this week

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.