Determine if three side lengths make a triangle

Question: DETERMINE IF SIDES MAKE A TRIANGLE HELP
Part A: Determine if the three sides could make a triangle21, 18, 17:     because  ›  is  (true or false)3, 12, 8:  because  ›  is  (true or false)

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Answered By:

John C.
Experienced tutor in trigonometry, precal, and calculus

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Written Explanation:

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