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Mathematics, 12.03.2021 01:20 CorsoGod

Do u know how to calculate a grade i got a 66% on a test and if it's 70% of my grade added to 89% I wanna know how much it would lower

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Do u know how to calculate a grade i got a 66% on a test and if it's 70% of my grade added to 89% I...
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