Mathematics Algebra Graphs and Functions 581825
The Quadratic Equation and Cost/Profit Calculation
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This solution offers detailed step-by step calculations and graph plotting related to two quadratic equation problems.
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Solution provided by:
Tania Dey, PhD
Education Recent Feedback
"Thankyou for the feedback.
I have a few question though;
With the first statistic about cost below...
“According to Sigma-Aldrich catalog, cost of 1L octane is AUD $ 392.00, whereas the cost of 1L ethanol is AUD $196.00. Moreover, if ethanol is obtained from sugar industry as a by-product, it may cost even less. Source of oxygen is ambient atmosphere, so it costs nothing. So ethanol is much cheaper than petrol, in fact it is half-priced: AUD $ (392-196) = $ 196.”
I didn't think it made sense because the cost of petrol per litre is normally a dollar something or even less than a dollar not a couple of hundred of dollars. For example, a statistic that I found in america was:
"U.S. ethanol production costs are about $1.20 per gallon of ethanol, or $1.82 per gallon on a gasoline-equivalent basis."
However, I was wondering whether you could find an Australian statistic.
Also, you mentioned that H20 is not a greenhouse gas. However, in the combustion equations it is actually carbon dioxide and water vapour which are produced and they are both greenhouse gases.
Finally, how do I calculate the energy efficiency of ethanol and petrol?
" "Thank you!" "Didnt really answer my questions but gave me a start at least." "Once again this is tremendous help I can't thank you enough for not only working the problem but explaining in detail how and why!!
KR" "Awesome thank you so much for the help!!!"
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