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Write the following value in scientific notation: 0.00000021

2.1 x 10^6

2.1 x 10 ^-6

2.1 x 10^5

2.1 x 10^ -7

User Idoshamun
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2 Answers

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the last one is the answer..
User JohnRC
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10 to the power of negative 6
User Ulentini
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