Make the greatest and the smallest 4 digit numbers using any four different digits with conditions are given digit 8 is always at ones place

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

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 ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10