If \( x \) varies inversely with \( y \) and varies directly with \( z \), and if \( y \) and \( z \) are both 12 when \( x=3 \), express \( z \) in terms of \( y \) when \( x=5 \).
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This can be expressed as \( x = \frac{kz}{y} \), where \( k \) is the constant of variation. Show more…
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