zazzles5077 zazzles5077

14-11-2017
Mathematics

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If z varies inversely as w, and z=7 when w=8, find z when w=14

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dannielle dannielle

14-11-2017

z varies inversely as w ⇒ z*w=k
when z=7 and w=8 ⇒ 7*8=56=k

when w=14 ⇒ z*14=56
⇒z=56/14
⇒ z=4

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