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What is 4,2*10^8 / 2*10^4 ?

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2 Answers

Hi Fredrick,
 
4.2 x 10^8 = 4.2 x 108-4 = 2.1 x 104
2    x 10^4     2
 
I just divided the numbers 4.2 and 2.1 and then I used a law of exponents to subtract the exponents dividing by the same base.
 
 
Best of luck,
Shannon
2*108/2*104 = 10(8-4) = 104