(I chose one of the three options, because when I asked how many where there; I got no answer)
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I believe the answer is <span><em>public schools start at 9 AM every day</em></span>.
<em>Option 1</em><em> RIGHT</em>
I think the answer is the first one because I went to public schools and I noticed that.
<em>
Option 2 </em><em>WRONG</em><em />
I think the second option isn't right because public schools' basic subjects are studied in english.
<em>
Option 3 </em><em>WRONG</em>
It's wrong because most people live near the school that they can go by walking and/or biking.
Answer:
- <u>Translated from Portuguese language:</u>
"The gaseous coal is then burned in a gas turbine cycle and part of the residual heat from the exhaust gases is recovered to generate steam for the steam turbine. Currently, the construction of such plants costs about $ 1500 per kW, but their efficiency is about 45%. The average calorific value of coal is about 28,000,000 k J per ton (that is, 28,000,000 k J of heat released when 1 ton of coal is burned). If the mill is to recover its cost difference in five years from fuel savings, determine what the price of coal should be in $ per ton?"
Explanation:
- The price of coal will be around 37 $ per ton. As, a source of energy the coal is more involved in the different industrial and mechanical processes and increases the level of efficiency of different machines by providing a more unique way to obtain greater results.
