Respuesta :

mojix99

Answer:

12

Step-by-step explanation:

a2 +b2 = c2

a2 + 9 2 = 15 2

a2 + 81 = 225

     - 81    - 81

a2 = 144

 a = 12

colebrianna690
A=12 I hope this helps and this is definitely correct

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