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an average mattress contains 2,000,000 dust mites. dust mites are 0.0042 mm in length. what is the scientific notation for each of these numbers?

an average mattress contains 2 000 000 dust mites dust mites are 0 0042 mm in length what is the scientific notation for each of

Answer :

An average mattress contains 2,000,000 dust mites,

To write the scientific notation of the figure, we must move the decimal point to the left to give

[tex]2,000,000\Rightarrow2\times10^6\text{ dust mites}[/tex]

Dust mites are 0.0042mm in length

To write the scientific notation of the figure, we must move the decimal point to the right until we get a significant figure, which gives

[tex]0.0042\Rightarrow4.2\times10^{-3}\operatorname{mm}[/tex]

Hence, the right option is C

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