anonymous
  • anonymous
ScientificNotation Helppppp
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
|dw:1352247570190:dw|
anonymous
  • anonymous
and that would equal 9.944 x 10to the negative 6 power right???
phi
  • phi
what is 1.08 * 9.3 ?

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anonymous
  • anonymous
9944
phi
  • phi
are you doing the multiplication by hand?
anonymous
  • anonymous
cyes
phi
  • phi
When you get time, this might help http://www.khanacademy.org/math/arithmetic/decimals/v/mulitplication-8--multiplying-decimals--old-video but 1.08 * 9.3 is not 9.944
anonymous
  • anonymous
ok wait let me retry this
anonymous
  • anonymous
ok i to 10.044 x 10 to the -6 but the real answer is 1.0044 x10 to the -5...
phi
  • phi
10.044 x 10^-6 that is correct. but you want it in "standard" form. 10 is too big so divide 10.044 by 10 (make it smaller) to compensate, make 10^-6 bigger by 10 (multiply by 10 which means add 1 to its exponent)
anonymous
  • anonymous
so you have to add one or am i correct?
phi
  • phi
Did what I wrote not make sense? think about this: you have 10.044 x 10^-6 we can multiply by 10/10 (ten divided by 10 is just 1) 10.044/10 x 10 x 10^-6 10.044/10 is 1.0044 10^1 x 10^-6 is 10^(1-6) or 10^-5 so the final answer is 1.0044 x 10^-5
anonymous
  • anonymous
so you can't have a number less than 1 or greater than 10???
phi
  • phi
you could, but it would not be in "standard form" if you had 0.001 you would multiply by 1000 (or just count 1,2,3 how many spots you move the decimal point). then you would compensate by multiplying by 10^-3 1.000 x 10^-3
anonymous
  • anonymous
ok i new that i am just learning that .0001..you would go to the right 4 times and you would get 1 x 10 to the -3
phi
  • phi
you mean 0.0001 is 1 x 10^-4
anonymous
  • anonymous
ooo
phi
  • phi
0.0001 x 10000 /10000 or with exponents 0.0001 x 10^4 * 10^-4 (0.0001 x 10^4) * 10^-4 (0.0001 x 10000) * 10^-4 1.0 * 10^-4
anonymous
  • anonymous
ok got it
phi
  • phi
good. otherwise you won't understand the national debt, which needs scientific notation...
anonymous
  • anonymous
yup! thxx
anonymous
  • anonymous
ooo haha i just realize that 0 is bigger than -1 so when you have to compensate you would just add 1 that also goes with positive exponents right?
phi
  • phi
yes, 0 is bigger than -1. but 0 is neither positive nor negative. and of course 10^0 is the same as 1, so people generally don't use scientific notation when the exponent is 0 who would want to write 2 x 10^0 when 2 is all you have to write?

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