Respuesta :

The answer is 5

Wait let me explain please

Using pythagoras rule

The horizontal 9-5=4

The vertical is 3-0=3

[tex]\begin{gathered} AB^2=3^2+4^2 \\ AB^2=9+16 \\ AB^2=25 \\ AB=\sqrt[]{25} \\ AB=5\text{ units} \end{gathered}[/tex]

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