If you are using algebra tiles to factor a trinomial of the
form ar? + bx + c, when would you need to bring in zero
pairs? Why?

Simplify the expression. -2/5(10+15m-20n)

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.

If two parallel lines are cut by a transversal, interior angles on the same side of the transversal are supplementary. a. always b. sometimes c. never