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a nickle is approximately 20mm in diameter and a quarter is about 25 mm in diameter. if the nickle is enlarges to a diameter of 128mm, what would be the diameter of the quarter using the same scale?

  • Algebra - , Sunday, January 9, 2011 at 7:50pm

    128 * (25/20) = 128 * 5/4 = 32*5 = 160

  • Algebra - , Wednesday, November 28, 2012 at 7:20pm

    The electrical resistance of a wire varies directly as its length and inversely as the square of its diameter. a wire with length of 200 inches and a diameter of one- quarter of an inch has a resistance of 20 ohms. find the electrical resistance in a 500 inch wire withe the same diameter

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