Which expression is equivalent to 1/4y−1/2? ( ignore the highlighted answer i don’t know if it’s right or not)

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.

5(-9w) put expression in distributive property

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?