Respuesta :

Salutations!

[tex](8.4 * 10^7)/ (3*10^3)[/tex]

Divide 8.4 by 8

[tex]8.4/3=2.8[/tex]

Now, we have to work out the powers ---

The power have 2 positive signs, but in division we would always subtract.

[tex]10^7^-(^+^3) = 10^{4}[/tex]

Lets form it into standard form ---

[tex]2.8*10^{4}[/tex]

Hope I helped (:

Have a great day!
it should be 2.8 x 10^4 i took ze test