Friday, July 31, 2009

Works all done, just need a second opinion, am i right?

First of all, I appologize for posting this a few times. But I think I have finally gotten it!





An airplane cruises at 120 km/h in still air. one day, when the wind was blowing steady from the west, the airplane travelled west (flying into the wind) and landed at its destination after 1.5 g. The airplanes return trip (flying with the wind) was only 1.0h long. On both legs, the airplane travelled at its cruising speed (measured with respect to the air surrounding the airplane)





a)Write a system of equations that would allow you to determine the speed of the wind blowing that day and the distance travelled each way.


d= 1.5 (120-x)


d= 1(120+x)





b) When solving the system of equations graphically, what equations would you enter into the equation editor? Fill in the blank calculator display.


y1=(120-x)1.5


y2= (120+x)1





c) Indicate what the variable X and Y represent.


x represents the windspeed, and y(d) represents the distance (y=)

Works all done, just need a second opinion, am i right?
Sorry, I can't answer your question but I have to tell you how much I admire you for keeping on till you feel satisfied. You will do well in whatever you do if you keep up such a good work habit.

purple flowers

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