»first put the three numbers in order from smallest to largest:
[tex] \tt a = 4.6, \: \: b = 9.3 \: \: and \: \: c = 9.9.[/tex]
»Now check whether a + b > c. since 4.6 + 9.3 = 13.9 it is true that 4.6 + 9.3 > 9.9 so these are the side lengths of a triangle.
[tex] \\ [/tex]
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