For a contest, dominique is stacking 3 super long pen lengthwise on top of each other. each pen is 2 feet long. if she succeed, how many inches tall will her stacks of pen be?

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.

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?

Collin did the work to see if 10 is a solution to the equation r/4=2.4