Find an explicit formula for the arithmetic sequence 170,85,0,-85,...170,85,0,−85,...170 , comma, 85, comma, 0, comma, minus, 85, comma, point, point, point.

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?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

Divide. –4.2 ÷ 6 = a –0.7 b 0.7 c –7 d 7 me