URGENT 15 PNTS! Which of the following is correct based on this picture?
A. cosY=3863
B. none of these are correct
C. tanY=3863
D. sinY=3863

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?

How do i do this activity, is appreciated

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?