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What is the correct way to write [tex]$1,550,000,000$[/tex] in scientific notation?

A. [tex]$1.55 \times 10^9$[/tex]
B. [tex]$1.55 \times 10^{10}$[/tex]
C. [tex]$15.5 \times 10^8$[/tex]
D. [tex]$15.5 \times 10^9$[/tex]

Answer :

To write the number [tex]$1,550,000,000$[/tex] in scientific notation, follow these steps:

1. Identify the significant digits: The significant digits in [tex]$1,550,000,000$[/tex] are [tex]$1.55$[/tex].

2. Determine the power of 10: We need to express the number in the form of [tex]\( \text{significant digits} \times 10^n \)[/tex], where [tex]\( n \)[/tex] is the power of 10 that adjusts the decimal point placement to its original position.

3. Count the decimal places: Move the decimal point 9 places to the right to change [tex]$1.55$[/tex] to [tex]$1,550,000,000$[/tex].

Therefore, the correct scientific notation for [tex]$1,550,000,000$[/tex] is:
[tex]\[ 1.55 \times 10^9 \][/tex]

The correct choice from the options given is:
[tex]\( 1.55 \times 10^9 \)[/tex]

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