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Answer :

Answer:

[tex]\boxed{\boxed{\sf{a=5}}}[/tex]

Solution Steps:

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1.) Fill in the formula:

  • F = [tex]B^2-C^2=A^2[/tex]
  • F = [tex]12^2-13^2=A^2[/tex]
  • F = [tex]144-169=A^2[/tex]

2.) Subtract:

  • [tex]169-144=25[/tex]

3.) Find the square root of 25:

  • [tex]\sqrt{25} =5[/tex]

So your answer would be C, [tex]\bold{a=5}[/tex].

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