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Answer:

8 : 2.5

Step-by-step explanation:

3√512:  Convert the decimal into an equivalent fraction You can also use a calculate to divide 1 by the fraction.

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Answer:

3.2 : 1

Step-by-step explanation:

Given

[tex]\sqrt[3]{512}[/tex] : [tex]\frac{1}{0.4}[/tex]

= 8 : 2.5 ( divide both parts by 2.5 )

= 3.2 : 1