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What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?

Circle d circumscribes abc and abe. which statements about the triangles are true? statement i: the perpendicular bisectors of abc intersect at the same point as those of abe. statement ii: the distance from c to d is the same as the distance from d to e. statement iii: bisects cde. statement iv: the angle bisectors of abc intersect at the same point as those of abe. a. i only b. i and ii c. ii and iv d. i and iii e. iii and iv