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A wooden building has the shape of a rectangular pyramid. the buildings base is 100 meters long and 50 meters wide the height of each triangular face is 40 meters how much wood was used to make the entire building?
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Two customers went to a post office. first customer paid $12 for 14 and 5 envelopes the second paid 24.80 for 10 postcards and 15 envelopes. what is cost of each envelope?
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Write the expression 7x^3-28xy^2 as the product of 3 factors
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