Respuesta :

this would be:-

square root [ (5-0)^2 + (-9 -3)^2) ]

= square root (  25 + 144)

= sqrt 169

= 13 Answer

Stiaen
Hi !

To calculate a distance between two points A and B of a coordinate plan, we use this specific fomula : [tex]\boxed{\boxed{AB=\sqrt{\left(x_B-x_A\right)^2+\left(y_B-y_A\right)^2}}}[/tex]

So lets say we have two points : A(0, 3) and B (5, -9)

[tex]AB=\sqrt{\left(5-0\right)^2+\left(-9-3\right)^2}\\\\AB=\sqrt{5^2+(-12)^2}\\\\AB=\sqrt{25+144}\\\\AB=\sqrt{169}\\\\\boxed{AB=13}[/tex]

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