Solve the system of linear equations without using multiplication.

7x + 8y = 20
7x - y = 29

Parabolas y=−2x^2 and y=2x^2 +k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Which expression and diagram represent “renee biked four times as far this month as last month”?