Find the messing angle

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.

Which expression gives you the distance between the points (5,1)and(9,-6)

Solve x+3y=6 and 4x-6y=6 by elimination . show work !