Some helpful math hints.
Basic Algebra 1. Since we know m , n , and x we can now calculate y c. divide both sides by m , the m 's on the left cancel. The point is, anything you do to one side you must balance by doing the same thing to the other side. Scientific notation is very helpful when doing math in astronomy because we are often dealing with a combination of very large numbers and very small numbers. Any number raised to the zeroeth power is 1.0.