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Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?
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Mathematics, 21.06.2019 22:30
Factor the polynomial by its greatest common monomial factor.
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If 0.05x=1.5 then 2x=?...
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