What happens to the volume of a cylinder if the height doubles

Consider the proof. given: segment ab is parallel to line de. prove: what is the missing statement in step 5?

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15