Element X decays radioactively with a half life of 11 minutes. If there are 300 grams of Element X, how long, to the nearest tenth of a minute, would it take the element to decay to 99 grams?

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