richgall____
  • richgall____
The mass of the Rock of Gibraltar is 1.78 ⋅ 10^12 kilograms. The mass of the Antarctic iceberg is 4.55 ⋅ 10^13 kilograms. Approximately how many more kilograms is the mass of the Antarctic iceberg than the mass of the Rock of Gibraltar? Show your work and write your answer in scientific notation.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
scientific notation is the form of writing a number: \[a*10^n\], where 0
anonymous
  • anonymous
you already have masses written in scientific notation. So you just need to solve \[4.55*10^{13} - 1.78*10^{12}\]
richgall____
  • richgall____
Thanks @ksanka

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anonymous
  • anonymous
you can do this way: \[4.55∗10^{13}−1.78∗10^{12}=10^{12}*(4.55*10-1.78)\] then solve for the number in brackets
richgall____
  • richgall____
The numbers in the brackets equal 43.72
anonymous
  • anonymous
in brackets you get 43.72. But the a must be less than 10, so the answer will be \[4.372*10^{12}*10=4.372*10^{13}\]
anonymous
  • anonymous
let me check on calculator, for if I made a mistake.
richgall____
  • richgall____
Okay
anonymous
  • anonymous
yep, that's right!

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