What is the common ratio of the following geometric sequence?
7/12,-1/4,3/28,-9/196,27/1372

Xto the second power plus 14x plus 48. what are the factors? we are doing factoring trinomials with a=1

Which is greater, 7 p 5 or 7 c 5? 7p5 7c5

In a singing competition, there are 150 participants. at the end of each round, 40% of the participants are eliminated. how many participants are left after n rounds?