How can i adjust a quotient to solve a division problem

Negative 5 1/12 + negative 4 1/4 + 6 3/4

For the inequality |c| < |d| to be true, which of the following must be true?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.