If y varies jointly as x and z and y = 24 when x = 2 and z = 1, find y when x is 12 and z is 2. A. 288
B. 48
C. 576
D. 144​

Franco wants to double the volume of the cone. what should he do?

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?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?