A system of equations has 1 solution. If 4x - y = 5 is one of the equations, which could be the other equation? y=-4x + 5 y = 4x-5 2y = 8x - 10 -2y = -8x – 10

Find the solution of system of equation y= x-4 y=4x+2

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?

The ratio of wooden bats to metal bats in the baseball coach’s bag is 2 to 1. if there are 20 wooden bats, how many metal bats are in the bag?