If you mean the answers given on WikiAnswers website, yes, they are free. If you are referring to another site, I don't know.
Mathhelper.com homeworkhelper.com or just look up the word " Math help " on google.com
Their is no cheats for 21 questions I personally just do the offers (free ones) just so I can see the answers.
Yes, the Answers Androip app is free for users to download and use.
Yahoo answers
Yes, registration is free. Use is free.
some tutoring websites give a couple free math answers
Admission to the Answers Summit is free.
No WikiAnswers is a very free community. Wiki Answers i think is with Affilation of WIKIPEDIA as its a free contrib. It just the community looks at you better
certifiediqtest.com for adults
Answers and Wikianswers are free. They do not charge you to ask questions or get answers.
Free acls question and answers
for free