06-01-2015
Mathematics

contestada

What is (4x10 to the Eighth power subtracted by 9×10 to the seventh powers

Respuesta :

06-01-2015

Rewrite 9x10^7 as 0.9x10^8.

Then you can simply subtract.
4x10^8 - 0.9x10^8 = 3.1x10^8

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