To simplify the expression \( \frac{4.6 \times 10^5}{2,300,000} \), we can rewrite \( 2,300,000 \) in scientific notation.
First, we note that:
\[ 2,300,000 = 2.3 \times 10^6 \]
Now, we can write the quotient as:
\[ \frac{4.6 \times 10^5}{2.3 \times 10^6} \]
When dividing numbers in scientific notation, we divide the coefficients and subtract the exponents:
\[ \frac{4.6}{2.3} \times 10^{5 - 6} \]
Calculating the coefficients:
\[ \frac{4.6}{2.3} = 2 \]
Subtracting the exponents:
\[ 5 - 6 = -1 \]
Putting it all together, we have:
\[ 2 \times 10^{-1} \]
This can also be expressed in decimal form as:
\[ 0.2 \]
So, the expression that represents the quotient \( \frac{4.6 \times 10^5}{2,300,000} \) is:
\[ 2 \times 10^{-1} \text{ or } 0.2 \]
If you have multiple-choice answers (A, B, C, D), please provide those options for clarity. Otherwise, the final answer is \( 2 \times 10^{-1} \) or \( 0.2 \).