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babymother [125]
2 years ago
5

(9⋅10

Mathematics
1 answer:
cestrela7 [59]2 years ago
8 0

Answer:

  A. -18·10^6

Step-by-step explanation:

The rules of exponents apply to powers of 10 used in scientific notation. The associative and commutative properties of multiplication also apply.

<h3>Application</h3>

  (a^b)(a^c) = a^(b+c)

The numerical product is ...

  (9\cdot10^9)\cdot(-2\cdot10^{-3})=(9)(-2)(10^{9-3})=\boxed{-18\cdot10^6}

__

<em>Additional comment</em>

Expressed in scientific notation, the result would be ...

  -1.8\cdot10^7

Your calculator can perform this multiplication for you.

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