9.5 * 10^6 = 9,500,000
4.0 * 10^2 = 400
9,500,000 * 400 = 3,800,000,000 = 3.8 * 10^9
(9.5 × 10⁶) × (4.0 × 10²) in scientific notation
(9.5 × 10⁶) × (4.0 × 10²) = (9.5 × 4) × (10⁶ × 10²) =
= 38 × 10⁶⁺² = 3.8 × 10 × 10⁸ = 3.8 × 10¹⁺⁸ = 3.8 × 10⁹ in scientific notation
Answer : 3.8 × 10⁹ in scientific notation
Hope this helps!
[tex]\textit{\textbf{Spymore}}[/tex]