Frank fitness found a correlation coefficient of -0.74 between hours of strenuous exercise each week and a standard measure of body mass. he interprets this to mean that there is a and relationship between hours of strenuous exercise and body mass. a. strong; positive b. strong; negative c. weak; positive d. weak; negative

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.