Write the expression -3x ^2 + 2y ^2 + 5xy - 2y + 5x ^2 - 3y ^2 in simplest form.  how many terms are in the simplified expression? how many of the terms in the simplified expression are negative?

Find the value of x for which the lines are parallel.

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.