There are 7 people at a party. if each person shakes the hand of everyone exactly once, how many handshakes will take place show your work

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

Choose the more precise measurement. 26.4 cm or 8.39 cm

According to the 2008 u.s. census, california had a population of approximately 4 × 10^7 people and florida had a population of approximately 2 × 10^7 people. which of the following is true? a. the population of california was approximately two times the population of florida. b. the population of florida was approximately twenty times the population of california. c. the population of florida was approximately two times the population of california. d. the population of california was approximately twenty times the population of florida.