Answer:
2.7 * 10^-7
Explanation:
You count the number of digits after the decimal point until you come to a number > 0. So here we have 6 0's and a 2 , total 7 .
So the exponent is -7 (negative because the number is < 1).
0.00000027 = 2.7 *10^-7.
2.7 x 10-7
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