Algebra

If you are 20 years old,you have been alive for more than 630,000 seconds,write the last number in scientific notation?

630,000,000

I said it was 630,*10^7
idk how its wrong!

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  1. in scientific notation , we use a single digit followed by a decimal x a power of 10

    so you want the decimal to be after the 6

    6.2 x 10^8

    that is,
    assume that the decimal is at the end of
    630,000,000.
    Now count how many places I moved it to get to be after the 6

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  2. so the answer would be
    630,*10^9?
    or 630,*10^8
    becuase 6.2x 10^8 it is saying its wrong.

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  3. It’s 6.3 x 10^8

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