Which property of multiplication is shown? 5•1=5
associative
identity
distributive
commutative
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Which equation represents the partial sum of the geometric series?

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 of the following points is collinear with (-2,1) and (0,3)