anonymous
  • anonymous
https://gyazo.com/3eefb3027a5c180805855592bfb28d97 Thats the question
Mathematics
katieb
  • katieb
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jim_thompson5910
  • jim_thompson5910
Have you tried expanding out each expression? example: \[\Large 2.7 \times 10^3 = 2,700\]
anonymous
  • anonymous
i tryed that...
jim_thompson5910
  • jim_thompson5910
what did you get

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anonymous
  • anonymous
let me look at the question again
anonymous
  • anonymous
its b
jim_thompson5910
  • jim_thompson5910
why?
anonymous
  • anonymous
you know scientific notation?
jim_thompson5910
  • jim_thompson5910
yes I do
jim_thompson5910
  • jim_thompson5910
what did you get when you converted from scientific notation to the full expanded number?
anonymous
  • anonymous
100000000
jim_thompson5910
  • jim_thompson5910
which one is that?
anonymous
  • anonymous
10^8
jim_thompson5910
  • jim_thompson5910
so what would 7.8 times 10^8 be equal to?
anonymous
  • anonymous
xD i forgot how to convert .'s
jim_thompson5910
  • jim_thompson5910
start with 7.8 then move the decimal point 8 times to the right (since the exponent over the 10 is 8)
anonymous
  • anonymous
mhm
jim_thompson5910
  • jim_thompson5910
do the same with the answer choices
jim_thompson5910
  • jim_thompson5910
then see which is greater
anonymous
  • anonymous
B.....
jim_thompson5910
  • jim_thompson5910
Can you show me the expanded forms for each?
anonymous
  • anonymous
-___- i know the answer is B
jim_thompson5910
  • jim_thompson5910
I just want to make sure that it's not a complete guess
anonymous
  • anonymous
its not :P

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