exam Maths Puzzle Numerical Ability

What is the answer to x=4 and 2x-3y=-19

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exam Other Question

A board 20 feet long is cut into two pieces such that the lenght of one piece is two-thirds of the lenght of the other piece. find the lenght of the shorter piece of board. I need to find the volume of a right circular cylinder the height is 5 inches and radius is 2 inches.