Question

solve the following.
(6.49 × 10⁻⁷) ÷ (2.13 × 10⁵)
a 3.0469 × 10⁻³⁵
b 3.0469 × 10⁻¹²
c 3.0469 × 10²
d 3.0469 × 10⁻²

Explanation:

Step1: Split into two divisions

$\frac{6.49}{2.13} \times \frac{10^{-7}}{10^{5}}$

Step2: Calculate coefficient division

$3.0469 \times \frac{10^{-7}}{10^{5}}$

Step3: Divide the powers of 10

$3.0469 \times 10^{-7-5} = 3.0469 \times 10^{-12}$

Answer:

b. $3.0469 \times 10^{-12}$