Describe how you can find the roots for any quadratic function written in factored form by looking at just the equation.

Which of the following properties can be used to show

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?

Complete the equation of the line through (−10,3) and (−8,−8). use exact numbers.