name each polygon by its number of sides and then classify it as convex or concave and regular or irregular

Find the sum to the equation 3+6+9+

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.

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?