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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 23:00
Joey is asked to name a quadrilateral that is also a rhombus and has 2 pairs of parallel sides.should be his answer
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In the figure, what is the appropriate name for line DE?
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