How do you simplify using scientific notation? (8.76 x 109)(6.52 x 10-3)/13.27 x 105

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?

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b

Find the distance between c and d on the number line c=3 and d=11