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Which of the following relations is true

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  1. 3 Y equals K left parenthesis 1 minus sigma right parenthesis    
  2. K equals fraction numerator 9 eta Y over denominator Y plus eta end fraction    
  3. sigma equals open parentheses 6 K plus eta close parentheses Y    
  4. sigma equals fraction numerator 0.5 Y minus eta over denominator eta end fraction    

    Answer:The correct answer is: sigma equals fraction numerator 0.5 Y minus eta over denominator eta end fractionY equals 2 eta open parentheses 1 plus sigma close parentheses rightwards double arrow sigma equals fraction numerator 0.5 Y minus eta over denominator eta end fraction

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