23-11-2014
Mathematics

Answered

Y varies inversely as x and y=5 when x=3

Answer :

paulcox paulcox

23-11-2014

xy=k

3*5=k

k=15

xy=15 or y=15/x

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apologiabiology apologiabiology

23-11-2014

so if somthing varies inversely then when one value goes up, the other value goes down so xy=z and z has to be the same so lets say that z=16
when x=2 y=8
when x=4 y=4
when x=8 y=2
when x=16 y=1
so xy=z
subtitute
(3)(5)=15
so if x=5 y=3
x=1 y=15
x=15 y=1

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