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.
1 Some decimal fractions are solely a collection of digits that repeat from the beginning, such as 0.3 which is just 3 repeating for ever and 1/7 which is 142857 endlessly repeated.