In the United States, a CD reaches gold status once 500 copies are sold. A CD reaches platinum once 1 million or more copies are sold.

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)