Answer:
3.12 * [tex]10^-^7[/tex]
Step-by-step explanation:
Scientific notation requires a decimal with only a ones digit and decimal digits with a power of 10.
0.000000312 can be written as 3.12 times a power of 10.
Since you would have to move the decimal point of '3.12' 7 times to the left in order to get '0.000000312', the power of ten should be -7.
Your answer should be 3.12 * [tex]10^-^7[/tex].
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