At the craft store, Martina bought a bag of yellow and orange marbles. She received 15 marbles in all. 6 of the marbles were yellow. What percentage of the marbles were yellow? Write your answer using a percent sign (%).

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.

It says factor each expression 49x-28?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !