Respuesta :

Answer:

Scientific notation: 4 x 10^10

Expanded form: 40,000,000,000

Step-by-step explanation:

(4 x 10^6) x (1 x 10^4)

(4 x 1,000,000) x (1 x 10,000)

(4,000,000) x (10,000)

40,000,000,000