Respuesta :

Answer:

See below in bold.

Step-by-step explanation:

1. 0.00000402

= 4.02 * 10^-6  (Counting the digits after the decimal point until we get to the 4 gives us the -6).

2.  1,900,000

= 1.9 * 10^6    ( counting the number of digits after the 1 gives us 6).

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