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Lorico [155]
3 years ago
12

37. Two years ago, Bob flew 6 x 105 miles in an airplane. This was 15 times as many

Mathematics
1 answer:
gogolik [260]3 years ago
3 0

Answer:

  A.  4·10⁴

Step-by-step explanation:

The problem statement tells you ...

  6×10⁵ miles = 15 × (last year's mileage)

Dividing by 15 gives ...

  (60×10⁴ miles)/15 = (last year's mileage) = 4×10⁴ miles

_____

<em>Further explanation</em>

An exponent is an indication of repeated multiplication.

  10⁵ = 10·10·10·10·10 = 100,000

We can use the associative property of multiplication to rewrite the number of miles:

  6×10⁵ = 6·(10·10·10·10·10) = 600,000 = (6·10)·(10·10·10·10) = 60×10⁴

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Step-by-step explanation:

we have

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<em>Example</em>

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