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Write [tex]$100,800,000,000$[/tex] in scientific notation.

A. [tex]$1.008 \times 10^{11}$[/tex]

B. [tex]$1.8 \times 10^{11}$[/tex]

C. [tex]$1008 \times 10^8$[/tex]

D. [tex]$100.8 \times 10^9$[/tex]

Answer :

Sure! Let's convert the number [tex]\(100,800,000,000\)[/tex] into scientific notation step by step.

1. Understand what scientific notation means: Scientific notation is a way to express very large or very small numbers. It's written as the product of a number between 1 and 10 and a power of 10.

2. Identify the significant figures: In [tex]\(100,800,000,000\)[/tex], the significant figures we are primarily concerned with are the non-zero digits at the beginning of the number. Here, they are 1, 0, 0, and 8.

3. Place the decimal point: Position the decimal point after the first non-zero digit to create a number between 1 and 10. This gives us 1.008.

4. Determine the exponent: Count how many places you move the original decimal point to get this scientific form. Starting from the original number [tex]\(100,800,000,000\)[/tex], you move the decimal 11 places to the left to position it just after the 1 (from the end of the number all the way to right after the first digit 1).

5. Write in scientific notation: Combining the number and the power of 10, you get:

[tex]\[
1.008 \times 10^{11}
\][/tex]

So, the number [tex]\(100,800,000,000\)[/tex] is correctly represented in scientific notation as [tex]\(1.008 \times 10^{11}\)[/tex].

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