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A scientist observed a bacterium in a microscope. It measured about 0.0000029 meter in diameter. Which of the following is closest to 0.0000029?

A.
2×10−6
B.
2×10−5
C.
3×10−5
D.
3×10−6

Respuesta :

JeanaShupp

Answer: A. [tex]2\times10^{-6}[/tex].

Step-by-step explanation:

Given: The diameter of bacterium = 0.0000029 meter

≈  0.000002 meter  [ with 6 decimal places]

[tex]=\dfrac{2}{1000000}=\dfrac{2}{10^6}[/tex]

[tex]=2\times10^{-6}[/tex] meters    [[tex]\dfrac{1}{a^n}=a^{-n}[/tex]]

i.e. [tex]2\times10^{-6}[/tex] closest to 0.0000029.

Hence, the correct option is A. [tex]2\times10^{-6}[/tex].

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