Question

¿Cuánto mide x? en el ejercicio ​

Answer 1

Explicación paso a paso:

${h}^{2} = c {1}^{2} + c {2}^{2} \\ {13}^{2} = {5}^{2} + {x}^{2} \\ 169 = 25 + {x}^{2} \\ {x {}^{2} = 169 }^{} - 25 \\ {x }^{2} = 144 \\ \sqrt{ {x}^{2} } = \sqrt{144} \\ |x| = 12 \\ x = + - 12 \\ coge \: la \: positiva \\ \\ {13}^{2} = {5}^{2} + {12}^{2} \\ 169 = 25 + 144$