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I am reading about waves.What does the word "note" mean ? If 5 coins are tossed, what is the probability that at most 4 will be a tails? If the the oxidation number of ni at first is +2 and after the reaction is -3 how many electrons were gained? #5 please? Don't understand how to get it with the steps? The volume of a right circular cone is 2512cm^2 and its radius and height are in the ratio 5:12.find its radius and slant height.?