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Mathematics, 22.07.2019 07:00 perrintaylor01
What is the total r value for a wall made of 4 inches of wood, 2 inches of fiberglass, and 3 inches of foam? assume that the r values for a 1-inch thickness of these materials is given by: r(1" wood) = 2, r(1" fiberglass) = 4, and r(1" foam) = 5?
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What is the total r value for a wall made of 4 inches of wood, 2 inches of fiberglass, and 3 inches...
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