How do you order the following from least to greatest −√49,−√7,0,−√51,−6.8?

1 Answer
Scott F.
Apr 21, 2017

-√51,-√49,-6.8,-√7,0

Explanation:

If x>y then √x>√y. If x>y then -x<-y.

We know that 0 is the greatest because everything else is negative, thus less than zero. We also know that -√51<-√49<-√7 because of the rules above.

Finally, since -√9<-√7<-√4 because of the rules above, -√7 is between -3 and -2, so -√7<-6.8<-√49 because -√49=-7.

Thus, -√51<-√49<-6.8<-√7<0

Related questions
See all questions in Order of Real Numbers
Impact of this question
1940 views around the world
You can reuse this answer
Creative Commons License