Posted by Devon on Tuesday, December 16, 2008 at 1:19am.
In scientific notation, the decimal place is always after the first significant figure, in this case the 9
count the number of places you would have to move the decimal, that becomes your exponent of 10
so 9.0 x 10^10
90,000,000,000
You move decimal place after first significant figure and number of places you move does become your exponent but when you move right, exponent is negative and when you move left exponent is positive. Since in this case we are moving decimal to right by 10 places the exponent will be -10. Hence scientific notation would be 9.0*10^-10
is this correct?
90,000,000,000??
seems right
gr has it right
9 * 10^-10
Thanks to both of you for correcting my blatant typing error.
Perhaps I shouldn't attempt to answer questions at 1:30 A.M. anymore, lol
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