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Select all of the expressions that are equal to the product of [tex]$10x^9$[/tex] and [tex]$(60x–6)^{-1}$[/tex].

1. [tex]\frac{10x^9}{60x–6}[/tex]
2. [tex]10x^9 \cdot (60x–6)[/tex]
3. [tex]10x^9 \cdot (60x–6)^{-1}[/tex]
4. [tex]\frac{10x^9}{(60x–6)^{-1}}[/tex]

Answer :

The correct expressions equivalent to the product of 10x9 and (60x–6)−1 are 10x9/(60x–6) and 10x9*(60x–6)−1.

The question asks which expressions are equal to the product of 10x9 and (60x–6)−1. To understand which expressions are equivalent, it's crucial to recall how negative exponents and division operations work in algebra.

Negative exponents denote a division, therefore, an expression like a−n is equivalent to 1/an. Thus, (60x–6)−1 is the same as 1/(60x–6). Multiplying this by 10x9 gives us 10x9/(60x–6).

Comparing the given options:

10x9/(60x–6) is correct since it represents the division as described.

10x9*(60x–6) shows direct multiplication without consideration of the negative exponent, therefore incorrect.

10x9*(60x–6)−1 is another way to write the original expression, making it correct.

10x9/(60x–6)−1 is incorrect because it suggests subtracting 1 after the division, which alters the meaning.

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