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Albert0898
 one year ago
A fan is running at 10 revolutions per second. After it is turned off, it's speed decreases at a rate of 75% per second. Determine the number of revolutions completed by the fan after it is turned off.
Albert0898
 one year ago
A fan is running at 10 revolutions per second. After it is turned off, it's speed decreases at a rate of 75% per second. Determine the number of revolutions completed by the fan after it is turned off.

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amistre64
 one year ago
Best ResponseYou've already chosen the best response.1what sequence do you think we should apply?

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0Infinite Geometric?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1sounds good to me, and how to apply it?

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0\[S \infty = \frac{ a }{ 1  r }\]

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0r = .75 a = first term = 10

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0I was wondering it that was the correct approach and answer? Or do I use a different formula?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1i dont think r=.75, i could be mistaken tho if it decreases at a rate of k, then it retains 1k of its speed, right?

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0So if it decreases .75, then it retains .25

amistre64
 one year ago
Best ResponseYou've already chosen the best response.110 + 10(.25) + 10(.25)(.25) + ...

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0How did you get that though, 40/3?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.110/(1.25) = 10/(3/4) = 10*4/3

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0R is the common ratio, so r = .25?

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1i would say so. we want to determine how much of the rotations we are retaining. in order to count them.

Albert0898
 one year ago
Best ResponseYou've already chosen the best response.0This type of problem just happened to be the one I got incorrect on my exam. Thank you for your help!

amistre64
 one year ago
Best ResponseYou've already chosen the best response.1accursed exams!! good luck :)
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