Not sure if question is asking for var(x+y) or var(xy). If it's the latter, I do

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junior college 2 | H3 Maths
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junior college 2 H3 Maths Singapore

Not sure if question is asking for var(x+y) or var(xy). If it's the latter, I don't know how to solve. If it's the former, it doesn't make use of the 30% and 70% which is kinda weird.

Date Posted: 3 years ago

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