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NikAS [45]
4 years ago
8

An someone please help.

Mathematics
2 answers:
Kruka [31]4 years ago
5 0
I believe the answer is 6
Svetllana [295]4 years ago
5 0

This is a special right triangle with 3 sides that are 5, 12, 13. You should remember this triangle.

{13}^{2} =  {x}^{2}  +  {12}^{2}  \\  {x}^{2}  =  {13}^{2}  -  {12}^{2}  \\ x =  \sqrt{ {13}^{2} -  {12}^{2}  }  =  \sqrt{169 - 144}  =  \sqrt{25}  = 5

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