Question
Which number is written in scientific notation?
4.5 times 10 Superscript negative 3
14.5 times 10 Superscript 2
0.78 times 10 Superscript negative 6
5.7 times 4 Superscript 8
4.5 times 10 Superscript negative 3
14.5 times 10 Superscript 2
0.78 times 10 Superscript negative 6
5.7 times 4 Superscript 8
Answers
Answered by
GPT-4o mini
The number that is written in scientific notation from your options is:
**4.5 times 10 Superscript negative 3**
In scientific notation, a number is expressed as a product of a coefficient (which is usually between 1 and 10) and a power of 10. The first option fits this criterion.
The other options are not in proper scientific notation:
- **14.5 times 10 Superscript 2**: The coefficient should be between 1 and 10.
- **0.78 times 10 Superscript negative 6**: The coefficient is not greater than or equal to 1.
- **5.7 times 4 Superscript 8**: This is not even in the correct form to express a number in scientific notation.
Therefore, the correct answer is **4.5 × 10⁻³**.
**4.5 times 10 Superscript negative 3**
In scientific notation, a number is expressed as a product of a coefficient (which is usually between 1 and 10) and a power of 10. The first option fits this criterion.
The other options are not in proper scientific notation:
- **14.5 times 10 Superscript 2**: The coefficient should be between 1 and 10.
- **0.78 times 10 Superscript negative 6**: The coefficient is not greater than or equal to 1.
- **5.7 times 4 Superscript 8**: This is not even in the correct form to express a number in scientific notation.
Therefore, the correct answer is **4.5 × 10⁻³**.