Answer:

1.thousands

Explanation:

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1. (nasa pic)

2. 2479 in scientific notation

2.479 × 103

explaination :

All numbers in scientific notation or standard form are written in the form m × 10n, where m is a number between 1 and 10 ( 1 ≤ |m| < 10 ) and the exponent n is a positive or negative integer.

To convert 2479 into scientific notation, follow these steps:

1. Move the decimal 3 times to left in the number so that the resulting number, m = 2.479, is greater than or equal to 1 but less than 10

2. Since we moved the decimal to the left the exponent n is positive

n = 3

3. Write in the scientific notation form, m × 10n

= 2.479 × 103

Therefore, the decimal number 2479 written in scientific notation is 2.479 × 103 and it has 4 significant figures.

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3. 0.0047

explanation :

Since the exponent of the scientific notation is negative , move the decimal point 3 places to the left.

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