The wattage rating of an appliance, W, varies jointly as the square of the current, I, and

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The wattage rating of an appliance, W, varies jointly as the square of the current, I, and the resistance, R. If the wattage is 6 watts when the current is 0.2 ampere and the resistance is 150 ohms, determine the wattage when the current is 0.3 ampere and the resistance is 100 ohms.


(a) Write the variation equation.

(b) Determine the quantity indicated.

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A Survey of Mathematics with Applications

ISBN: 978-0134112107

10th edition

Authors: Allen R. Angel, Christine D. Abbott, Dennis Runde

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