Respuesta :

TSO
[tex]\text{Distance } = \sqrt{ (x_2 -x_1)^2 + (y_2 - y_1)^2}[/tex]

[tex]\sqrt{ \left( 15 - 3\right)^2 + \left( 12 - 7\right)^2}\\\\\sqrt{\left( 12\right)^2 + \left( 5\right)^2}\\\\\sqrt{ 144 + 25 }\\\\\\ \sqrt{ 169 } = \boxed{\bf{ 13}}[/tex]

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good job