In △abc, ∠a ≅ ∠c. if ab = 4x + 25, bc = 2x + 45, and ac = 3x − 15, determine the length of side ab.

When the solutions to each of the two equations below are graphed in the xy-coordinate plane, the graphs of the solutions intersect at two places. write the y-cordninates of the points of intersection in the boxes below in order from smallest to largest. y=2x y=x^2-3

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

Don't know how to find x given these segment lengths