5 machine of a noodle factory complete the required production of noodle in 15 days if 2 machines are shut down then in how many days would the remaining number of machines complete the required production of noodle?

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

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

Which number line represents the solution set for the inequality - x 24?