Nathan is buying a cell phon for his business. thr regular price of the cell phone is $179. if he buys the phone in the next 2 weeks, he will get a 20% discount. what will be the sale price if he buys the phone tomorrow?

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?

5/6+7/8what is the answer sealsdbdbshd

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).