Homework Help: Algebra

Posted by Lizzie on Sunday, August 5, 2012 at 2:06am.

A machine has a work output of 28ax^5 joules and a work input of 7a^2x^6 joules. What is the efficiency of the machine?

Algebra - Henry, Monday, August 6, 2012 at 10:05pm
Eff. = Output/Input.
Eff.=28ax^5 / 7a^2x^6 =4a^-1x^-1=4/ax

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