Which number is correctly written in scientific notation?(1 point)

Question

Responses

10 × 103
10 × 103 - incorrect

0.2520 × 10−3
0.2520 × 10−3 - no response given

2.520 × 103
2.520 × 103 - no response given

25.20 × 10^3

Answer 1

In scientific notation, the number must be in the format \( a \times 10^n \), where \( 1 \leq a < 10 \) and \( n \) is an integer.

Let's evaluate each option:

1. 10 × 10³: This is incorrect because the coefficient (10) is not between 1 and 10.

2. 0.2520 × 10⁻³: This is also incorrect because the coefficient (0.2520) is less than 1.

3. 2.520 × 10³: This is correctly written in scientific notation since the coefficient (2.520) is between 1 and 10.

4. 25.20 × 10³: This is incorrect because the coefficient (25.20) is greater than 10.

Therefore, the only number written in correct scientific notation is 2.520 × 10³.