58,927 in scientific notation

How do you use the elimination method for this question? explain, because i really want to understand!

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab