(4m2−m+2)−(−3m2+10m+4) find the difference

How do i solve using pythagorean theorem?

What is the multiplicative rate of change of the exponential function shown on the graph?

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?