Answer:
4 x 10⁻⁷
Explanation:
- To divide ( 7.2 x 10⁻⁴ ) by ( 1.8 x 10³ ), you can use the rules of exponentiation and division with numbers in scientific notation.
1. Divide the coefficients (the numbers outside of the exponent.
7.2 ÷ 1.8 = 4
2. Subtract the exponent of the divisor from the exponent of the dividend.
10⁻⁴ / 10³ = 10⁻⁴⁻³ = 10⁻⁷
3. Now, combine the coefficient and the exponent.
4 x 10⁻⁷