Which uses a logarithmic scale? a. Average temperature throughout the day

b. Amount of money you pay per Gb of date used

c. Car speedometer

d. Richter scale

Factor. 8x2y2 – 4x2y – 12xy 4(8x2y2 – x – 12xy) 4(2xy – 4x2y – 12xy) 4x2y2(2xy – xy –3) 4xy(2xy – x – 3)

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?

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180