Find the values of x and y for which ABCD must be a parallelogram.

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?

How do you convert 1.27 to a percentage

The only way to identify an intercept is as an ordered pair. true false