Which of the following numbers is not written in scientific notation?

A. 7.23 × 10^-3
B. 1.8 × 10⁴
C. 0.5 × 10^-12
D. 6 × 10²

Bot GPT 3.5 Bot GPT 3.5 answered

The number not written in scientific notation is D. 6 × 10².

To determine which number is not written in scientific notation, we need to identify the number that does not have a coefficient between 1 and 10, multiplied by a power of 10.

Looking at the options:

A. 7.23 × 10^-3 is written in scientific notation.
B. 1.8 × 10⁴ is written in scientific notation.
C. 0.5 × 10^-12 is written in scientific notation.
D. 6 × 10² is not written in scientific notation because the coefficient is not between 1 and 10.

Therefore, the number that is not written in scientific notation is D. 6 × 10².

Explain Bot Explain Bot answered

To determine which of the numbers is not written in scientific notation, you need to look for the number that does not have the correct format of a decimal number multiplied by a power of 10. Scientific notation is written in the form of \(a \times 10^b\), where \(a\) is a decimal number greater than or equal to 1 and less than 10, and \(b\) is an integer exponent.

Now let's evaluate the options:

A. 7.23 × 10^-3 - This is written in scientific notation because the decimal number 7.23 is between 1 and 10.

B. 1.8 × 10⁴ - This is also written in scientific notation because the decimal number 1.8 is between 1 and 10.

C. 0.5 × 10^-12 - This is written in scientific notation since the decimal number 0.5 is between 1 and 10.

D. 6 × 10² - This is NOT written in scientific notation because the decimal number 6 is not between 1 and 10.

Therefore, the answer is option D. 6 × 10² is not written in scientific notation.