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OpenStudy (anonymous):
A triangle has a perimeter of 72 units, and two of its sides measure x units and 3x units, respectively. Which inequality represents all possible values of x?
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OpenStudy (anonymous):
9<x<12
OpenStudy (anonymous):
The third side is 72-4x and must be > 3x-x (difference of the other two) so 72-4x>2x so 6x<72 and x<12 also 72-4x must be < 4x (sum of the other two) so 72<8x and x >9 \[9<x <12\] try that?
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