What is the common ratio for this geometric sequence 3,12,48,192

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?

Find the greatest common factor of the followig monomials 46g^2h and 34g^6h^6

Collin did the work to see if 10 is a solution to the equation r/4=2.4