Given: ac and bd bisect each other. What is the reason for step 3 of this proof

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

What is the quotient of 3x^4+22x^3+37x^2-7x+10

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.