A number plus the sum of the number
and seven.

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?

Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10