Find the radius of the circle. Round your answer to the nearest tenth. circumference = 25.1 in ​

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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?

The vertices of a triangle are a(7,5), b(4,2), c(9,2). what is m