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14 September, 15:37

Which set of three numbers could be the side lengths of a triangle?

А. 3, 5, 7

В. 2, 4, 8

с. 2, 4, 6

D. 3, 5, 9

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Answers (1)
  1. 14 September, 15:42
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    А. 3, 5, 7

    Step-by-step explanation:

    Because

    7 - 3 = 4

    7 + 3 = 10

    then

    7 - 3 < 5 < 7 + 3

    the 3 other cases don't fit with this rule.
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