midajah99
midajah99
27-12-2016
Physics
contestada
n is 3 but how did they get there?
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diene
diene
27-12-2016
12.5 = 100 * (1/2)^n
divide by 100:
0.125 = (0.5)^n
this is equivalent to:
[tex]n= \log_{0.5} 0.125[/tex], which equals 3.
(since 0.5 cubed = 0.125)
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AL2006
AL2006
27-12-2016
The bottom line is saying:. How many times do you have to cut 100 in half to get 12.5 ? ... 100 ==> 50 ==> 25 ==> 12.5 . Three times.
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