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question 7biii2- january 12 g482 ocr physics

I know the answer is obviously not 9 but if it was why do you have to put it as 9.0
Original post by runny4
I know the answer is obviously not 9 but if it was why do you have to put it as 9.0


Quoting the answer as '9' implies a lower accuracy than you'd have actually calculated to, or should have been able to calculate to, and they wanted you to answer to the correct number of sf for the context.

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