Rafael counted a total of 40 white cars and yellow cars there are nine times as many white cars as yellow cars how many white cars did rafael count

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