Writing during a thurdestorm yesterday. 600 millimeters of rain fell in 30 minutes ?
1.what is the unit rate for millimeters per minute ?
2. describe a situation in which it would be useful to know this unit rate ?
3. explain why the unit rate would be useful ?

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?

Just tell me how to set up the equation.

Two angles are complementary. the large angle is 36 more than the smaller angle. what is the measure of the large angle?