How do you write $28,000,000,000$ in scientific notation?

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Answer 1 · 2016-03-01T18:08:47

$= 2.8 xx 10^10$

$28, 000,000,000$

$= 28 xx 1000,000,000$

$= 28 xx 10^9$

$= 2.8 xx 10 xx 10^9$

$= 2.8 xx 10^10$

How do you write 28,000,000,000 28,000,000,000 in scientific notation?