Answer:
[tex] {x}^{2} = {90}^{2} + {120}^{2} (pythagoras) \\ {x}^{2} = 8100 + 14400 \\ {x}^{2} = 22500 \\ \sqrt{ {x}^{2} } = \sqrt{22500} \\ x = 150[/tex]
Step-by-step explanation:
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