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19-06-2018
Mathematics

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Dave knows the two largest numbers in a Pythagorean Triple, which are 13 and 12. What number, a, does Dave need to complete the triple?

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mathstudent55 mathstudent55

19-06-2018

a^2 + b^2 = c^2

a^2 + 12^2 = 13^2

a^2 + 144 = 169

a^2 = 25

a = 5

Answer: The number he needs, a, is 5

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