Updated: 03/31/2016 - by Philip Reed, Senior Consumer Advice Editor. 1  Inspected by Factory-Trained Technicians Before being put in a manufacturer's certified pre-owned program, technicians inspect the vehicles for a number of factors, including tire tread depth and brake pad thickness. The Benefits of Buying CPO Nearly all manufacturers now have certified pre-owned cars for sale.
The sum of a rational number and an irrational number is irrational.. By definition, an irrational number in decimal form goes on forever without repeating (a non-repeating, non-terminating decimal). By definition, a rational number in decimal form either terminates or repeats. If you add a non-repeating, non-terminating decimal to a terminating decimal, you still have a non-repeating, non-terminating decimal.
So let's say I have the number 1.2 repeating. So this is the same thing as 1.2222 on and on and on. Whatever the bar is on top of, that's the part that repeats on and on forever. So just like we did over here, let's set this equal to x. And then let's say 10x.