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A polyhedron has 9 faces and 21 edges. how many vertices does it have
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Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y
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What is the solution to the system of equations? y=1.5-3 y=-x
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A polyhedron has 9 faces and 21 edges. how many vertices does it have...
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