chrisbikesalot chrisbikesalot

22-03-2018
Mathematics

contestada

An acute triangle has side lengths 21 cm, x cm, and 2x cm. If 21 is one of the shorter sides of the triangle, what is the greatest possible length of the longest side, rounded to the nearest tenth?

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sqdancefan sqdancefan

22-03-2018

The triangle inequality requires the sum of the two short sides be at least as long as the longest side.
.. 21 +x ≥ 2x
.. 21 ≥ x
.. 42 ≥ 2x

The largest possible length of the longest side is 42 cm.

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eldermedinajr eldermedinajr

28-04-2020

Answer: C. 42.0 cm

Step-by-step explanation: I just took the test

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