Which number represents 4.6 × 10^-4 in standard form?
A. 460,000
B. 0.000046
C. 0.00046
D. 46,000
The number 4.6 × 10^-4 in standard form is represented as 0.000046.
So, the answer is B. 0.000046.
To convert a number in scientific notation to standard form, you need to move the decimal point to the right or left based on the exponent.
In this case, we have 4.6 × 10^-4. To convert it to standard form, we move the decimal point to the left because the exponent is negative.
Moving the decimal point four places to the left gives us 0.000046.
So, the number 4.6 × 10^-4 in standard form is B. 0.000046.
To convert a number written in scientific notation to standard form, you need to multiply the base number by the corresponding power of 10.
In this case, the base number is 4.6, and the power of 10 is -4 (since it's written as 10 to the power of -4).
To convert 4.6 × 10^-4 to standard form, you need to move the decimal point four places to the left. Since the exponent is negative, you move the decimal point to the left.
So, the number in standard form is 0.000046.
Therefore, the correct answer is B. 0.000046.