Which of these groups is in descending order? A) - 21, - 19, - 17, - 15, - 13 B) - 13, - 15, - 17, - 19, - 21 C) - 13, - 17, - 15, - 21, - 19 D) 13, 15, 17, 19, 21

50 inch board is to be cut into three pieces so that the second piece is four times as long as the first piece on the third piece is five times as long as the first piece if X represents the length of the first piece find the links of all three

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Trevor, Robert, and Maurice made some paper airplanes and want to see how far they will fly. The distance from Trevor to Robert is 13.5 feet. The distance from Robert to Maurice is 14.2 feet. The distance from Maurice to Trevor is 6.6 feet.

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