trojan2015
Write 2120 in scientific notation.



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LordHades
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2.1 X 10^3

abdul_shabeer
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2.12*10^3

LordHades
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*assuming 1 sig fig

LordHades
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sorry 2

chelbell409
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21.2*10^2

trojan2015
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0_o

LordHades
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The first 2 are correct. 'chelbell409' is not.

trojan2015
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ohh ok loool

chelbell409
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im sorry it 21.2x10^2

LordHades
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scientific notation means only numbers between 1 and 10.
Correct me if I'm wrong, but you go to school in Canada, possible ontario?

LordHades
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possibly*

chelbell409
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y don`t you get your calculator out and check because the decimal can`t be 2 digits and i checked my work on a calculator

chelbell409
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and no i go to school i the usa

LordHades
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"Any given number can be written in the form of a×10b in many ways; for example 350 can be written as 3.5×102 or 35×101 or 350×100."
*from wikipedia.

LordHades
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thats 10^2 and 10^1 and 10^0

LordHades
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In scientific notation, the exponent b is chosen such that the absolute value of a remains at least one but less than ten (1 ≤ a < 10).

chelbell409
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did u check my answer on ur calculator


chelbell409
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ok watch
2120
212.0 *10
21.2*10^2
10 times 2 equals 100
21.2 times 100 equals 2120 which just so happens to be the number i started out with