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LDP
Lv 6
LDP asked in Science & MathematicsMathematics · 10 years ago

Find n (secondary school maths)?

I am currently stuck on this question. Could anyone help? Please show/explain the working out if possible. Thanks!

http://i724.photobucket.com/albums/ww244/dark_phan...

Update:

Just an incentive: first person to answer gets 10 points. ;D

1 Answer

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  • ?
    Lv 7
    10 years ago
    Favorite Answer

    4n^(3/2) = 8^(-1/3) = 1/(8^(1/3)) = 1/2

    so n^(3/2) = 1/8

    so n^3 = 1/64

    n = cbrt(1/64) = 1/4

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