Write in scientific notation:
(a) 72,000
(b) 8,040,000,000
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hey..
scientific notation.. the number shd always.. shd we less than.. 1..
so... 72000=0.72×10^5
b. 8040000000..=0.804×10^9..
and also.. trick.. if the number is greater than.. 1..
just.. make the number less than 1 and multiply that into.. 10 power of the number of digits... simple...
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