Respuesta :

stuf2013010299

Answer:

a = 6.7

Step-by-step explanation:

[tex]a^{2} + b^{2} = c^{2} \\\\a^{2} + 9.3^{2} = 6.4^{2} \\\\a^{2} + 86.49=40.96\\= 45.53\\\\\sqrt{45.53} \\= 6.7\\a= 6.7[/tex]

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