There is a composite figure by four rectangles, sides length is 3 by 5 by 7, find the volume of the composite figure

What is the vertex form of f(x) = x2 + 6x + 3

What is sin 7x/4 ? i need on this urgent trig

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