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.

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Atextile fiber manufacturer is investigating a new drapery yarn, which the company claims has a mean thread elongation of 12 kilograms with a standard deviation of 0.5 kilograms. the company wishes to test the hypothesis upper h subscript 0 baseline colon mu equals 12 against upper h subscript 1 baseline colon mu less-than 12 using a random sample of n equals 4 specimens. calculate the p-value if the observed statistic is x overbar equals 11.8. round your final answer to five decimal places (e.g. 98.76543).

Triangle knm is what is true about the sides of knm