If two lines have the same slope and y-intercept, what is true of the lines? a. the lines are perpendicular. b. the lines intersect at the y-intercept. c. the lines are parallel, and do not intersect. d. the lines are the same.

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost