math ALG 2!scientific notations helpp

Write the following value in scientific notation.
23,000,000

Write the following value in scientific notation.
7,400,000

Write the following value in scientific notation.
0.00000021

Write the following value in scientific notation.
0.00003165

Which value below is not equivalent to the others?

7.27 x 101
72.7
727 x 100
7.27 x 10

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  1. 23,000,000
    = 2.3 x 10^7 (count how many decimal places I moved the decimal

    use the same method to express the others.

    I don't understand your last one, why are you multiplying by 101 ?

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    posted by Reiny

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