The units of the subway map below are in miles. Suppose the routes between stations are straight. Find the approximate distance a passenger would travel between stations J and K.
The distance from Station 3 to Station K is approximately __ miles.
(Round to the nearest tenth as needed.)

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?

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5