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:
3.) Find the square root of 25:
So your answer would be C, [tex]\bold{a=5}[/tex].
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