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Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.
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Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?
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The trigonometric ratios sine and secant are reciprocals of each other
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In DEF , C is the centroid. If DM = 57, find dc and cm...
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