Maggie's class bought three books at the book fair. the books cost $15, $9 and $12. use parentheses to write two different expressions and find how much the class spent in all.

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

Because of your favorite lemonade it is $3.84 for 3 gallons. write this as an unit rate

Explain how you can use the associative property to evaluate (7x50)x4.