Explicación paso a paso:
pitagoras :)
[tex] {x}^{2} + {(7 \times 10 \times {10}^{ - 2} )}^{2} = {3}^{2} \\ {x}^{2} + 49 \times {10}^{ - 2} = 9 \\ {x}^{2} + 0.49 = 9 \\ {x}^{2} = 8.41 \\ \sqrt{ {x}^{2} } = \sqrt{8.41} \\ x = 2.9[/tex]
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Explicación paso a paso:
pitagoras :)
[tex] {x}^{2} + {(7 \times 10 \times {10}^{ - 2} )}^{2} = {3}^{2} \\ {x}^{2} + 49 \times {10}^{ - 2} = 9 \\ {x}^{2} + 0.49 = 9 \\ {x}^{2} = 8.41 \\ \sqrt{ {x}^{2} } = \sqrt{8.41} \\ x = 2.9[/tex]