Respuesta :

Step-by-step explanation:

a. 900= 9 × 10²

b. 18,900 = 1.89 × 10⁴

[tex]c. 0.000064 = 6.4 \times {10}^{ - 5} [/tex]

Answer:

A. 9 * 10^2

B. 1.89 * 10^4

C. 6.4 * 10^-5

Step-by-step explanation: