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If \(j\) and \(k\) are inversely proportional and \(j=42\) when \(k=56\) , what is the value of \(j\) when \(k=32\) ? Express your answer as a decimal rounded to the nearest tenth.

tertre  Dec 3, 2017
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 #1
avatar+79846 
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j   =   a / k         where "a"  is the proportionality constant   ....so we have that

 

42  = a  / 56      multiply both sides by 56

 

2352  =  a

 

And    when k = 32, we have that

 

j   =  2352 / 32

 

j = 73.5

 

 

cool cool cool

CPhill  Dec 3, 2017
 #2
avatar+1227 
+1

Thanks so much, CPhill! It's correct!

tertre  Dec 3, 2017

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