7.832198653 . . is: rational irrational

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Factor this polynomial completely x^2-64

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .