Respuesta :

Answer:

16

Step-by-step explanation:

[tex]12^{2} +x^{2} =20^{2}[/tex]

[tex]144+x^{2} =400[/tex]

-144          -144

[tex]x^{2} =256[/tex]

[tex]\sqrt{x^{2}[/tex]=[tex]\sqrt{256}[/tex]

x=16

helpinghand104

Answer:

it would be 16 :)

Step-by-step explanation:

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good job