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Mathematics, 06.07.2019 00:00 bagofmud8339

∠c and ∠d are vertical angles with m∠c=−2x+90 and m∠d=x−30 . what is m∠d ?

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∠c and ∠d are vertical angles with m∠c=−2x+90 and m∠d=x−30 . what is m∠d ?...
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