What is the solution of the system of equations? ⎧ ⎪ ⎨ ⎪ ⎩ 3 x + 2 y + z = 7 5 x + 5 y + 4 z = 3 3 x + 2 y + 3 z = 1

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?

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

Which ordered pair is the best estimate for the solution of the system of equations? the graph of the system of equations : y = 3/2x +6 and y=1/4x - 2 , -3) .5, -3.5) , -4) , -3.5)