How many cups are in 20 gallons? AND how do I show my work for that?

correct=brainliest

Which of the following is a justification used while proving the similarity of triangles lom and mon

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

Solve: 3x+y=6 4x-2y=18 show all work !