Question 937448

Please help me with a math problem: Write an inequality that expresses the reason the lengths 5 feet, 10 feet, and 20 feet could not be used to make a triangle. Explain how the inequality demonstrates that fact. 
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<pre><font face = "Tohoma" size = 4 color = "indigo"><b>With T being the 3rd side, we get the inequality: {{{10 - 5 < T < 10 + 5}}}, or {{{highlight_green(5 < T < 15)}}}      
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