Find the area of the figure. Round to the nearest tenth if necessary. Please explain how if you can, this is due tomorrow morning at 9:00

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?

40 describe the outliers from the scatter plot.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.