X+5.5+8=5x-13.5-4x what does x equal

Collin did the work to see if 10 is a solution to the equation r/4=2.4

Ethan is proving that the slope between any two points on a straight line is the same. he has already proved that triangles 1 and 2 are similar. drag statements and reasons to complete the proof.

Drag the tiles to the boxes to form correct pairs. not all tiles will be used. match the circle equations in general form with their corresponding equations