50 POINTS! WILL MARK BRAINLIST | What advice would you give other players to help promote positive Xbox Live interactions? (minimum 250 charecters)

And what else can Xbox do to help reduce negative online behavior?
(minimum 250 charecters)
please help!

Designing a mobile web page is a little different from designing a regular web page. name at least three features that should be considered when designing a website that is mobile phone-friendly, and briefly explain why they are important.

If you combine two cells into one, what action are you performing? a.  adding a new row or column      b.  splitting the cells      c.  removing a new row or column      d.  merging the cells

1. define independent-set as the problem that takes a graph g and an integer k and asks whether g contains an independent set of vertices of size k. that is, g contains a set i of vertices of size k such that, for any v and w in i, there is no edge (v,w) in g. show that independent-set is np-complete.