What is the length of the hypotenuse, x , if open paren 12 comma 35 comma x close paren is a Pythagorean triple?

For a Pythagorean triple, the hypotenuse satisfies x² = 12² + 35². This gives x² = 144 + 1,225 = 1,369, so x = 37. The correct choice is 37.

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