What is the length of the missing side?

The missing side is 12.

Step-by-step explanation: Following the equation a² + b² = c², b=5 and c=13, which leaves A. 5² is 25, and 13² is 169. Subtract 25 from 169 and your left with 144, of which the square root is 12. so A=12.

Inserting these numbers into a² + b² = c² would make 5² + 12² = 13², which would then make 25 + 144 = 169, which would make 169=169. Sorry if the process doesn't make sense, but the answer is 12.

i will pick c put check it over to be sure

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