1. Which statement requires additional information to prove that a quadrilateral is a parallelogram? A). The diagonals of the quadrilateral bisect each other.

B). One pair of opposite sides of the quadrilateral is both parallel and congruent.

C). Both pairs of opposite angles of the quadrilateral are congruent.

D). One pair of opposite sides of the quadrilateral is parallel.

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

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step-by-step explanation:

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step-by-step explanation:

y-y1=m(x-x1)

y-1=1(x-8)