Mathematics
kvtya
29

PLEASE HELP!!! The lengths of two sides of a triangle are 12 inches and 4 inches. Which of the following dimensions is the third side of this triangle? 6 inches 8 inches 7 inches 9 inches

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(1) Answers
nutella

There is this theorem for triangles that the sum of the lengths of any two sides must be greater than the third side. So, we apply this theorem: (let x be the third side) 12 + x > 4x > -8 12+4 > x16 > x x + 4 > 12x > 8 The first inequality is not valid since the third side must not be negative.The answer should be agree with this inequality 8< x<16. Thus, the answer is 9 inches.

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