What is the value of tan157.5°

Which equation represents a line that is parallel to the line whose equation is 3x-2y=7( show all work)

What is the relationship between all triangles that can be drawn given the same three angles

Carl's candies has determined that a candy bar measuring 3 inches long has a z-score of +1 and a candy bar measuring 3.75 inches long has a z-score of +2. what is the standard deviation of the length of candy bars produced at carl's candies?