Question

holaaaaaa buenas noches ayudaaaa xfavor​

Answer 1

${13}^{2} = {a}^{2} + {12}^{2} \\ 169 = 144 + {a}^{2} \\ {a}^{2} = 25 \\ a = 5$

$\frac{ca}{co} + \frac{h}{co} \\ \frac{12}{5} + \frac{13}{5} \\ \frac{25}{5} \\ 5$

la respuesta es 5