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Mathematics 7 Online
OpenStudy (anonymous):

what The length of the hypotenuse of a right triangle is 137 units. The length of one leg of the triangle is 105. Gina wrote the following step to find the length of the unknown leg: Length of the unknown leg = 137^2 − 105^2 = 18,769 − 11,025 = 7,744 units Which statement best explains whether Gina's step is correct or incorrect?

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