A construction worker bought47 13/16poundsofnails. When those nails were all used, she bought2 1/2timesas many nails as she had bought the first time. How many pounds of nails did she buy the second time? Express your numerical answer only (no units) as a fully simplified mixed number.

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.