When 9x^2-100 is factored, it is equivalent to (3x-b)(3x+b) what is a value for b 50, 10, 3 or 100

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

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

Prove that 16^4-2^13-4^5 is divisible by 11.