3. If A and B are two matrices of size 4 x 4 such that Det(A): = -3 and Det(B) = , then Det((24) ?(4B")) is:
a
b.
d. None of these

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?

One integer is 5 more than another. their product is 104. find the integers

For what value of (y) is 3^3/3^y =1/9