The sum of the lengths of two sides of a triangle must be greater than the third side. the sides of a triangle measure x cm, 12 cm, and 10 cm. which inequality can be used to represent the possible values of x?

The smallest x can be is 3, because 10 + x must be greater than 12. The largest x can be is 21 because 12 + 10 = 22 must be greater than the third side x. Therefore, the inequality is:

3 < x < 21

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