First answer gets brainliiest Worth 40 points

This is not a question this is a gaining point questions

Answer by saying: 21

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

The annual snowfall in a town has a mean of 38 inches and a standard deviation of 10 inches. last year there were 63 inches of snow. find the number of standard deviations from the mean that is, rounded to two decimal places. 0.44 standard deviations below the mean 2.50 standard deviations below the mean 0.44 standard deviations above the mean 2.50 standard deviations above the mean