Question

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The distance from the Earth to the moon is about 240,000 miles. Rewrite the distance in scientific notation.

24 x 104
2.4 x 105
24 x 10−4
2.4 x 10−5

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Answer 1

2.4 × 10 ^ 5 - Option 2

Explanation:

Scientific notation is in the form :

a × 10^b

Where 1≤a<10

and b can be positive or negative .

For the letter a, the number 2.4 fits the criteria. (This leaves us with Option 2 or 4 )

Since positive values of b make big numbers and negative values of b make small numbers the answer must be :

2.4 × 10 ^ 5

Option 2

Hope this helped and have a good day