Suppose that 5 invitations to a graduation party are written and 5 envelopes are addressed. accidentally the invitations are randomly inserted into the envelopes and mailed without checking the addresses. what is the probability that all the invitations will be inserted into the correct envelopes ?

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Which type of graph would allow us to compare the median number of teeth for mammals and reptiles easily

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.