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Math

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Which expression represents the larger number?

A. 40.1 x 10 to the -6 power
B. 4.1 x 10 to the -7 power
C. 0.411 x 10 to the -6 power
D. 0.04001 x 10 to the -5 power

I got A, but I'm not quite sure if it's the right answer :/

  • Math -

    A --- 40.1 x 10^-6 = 4.01 x 10^-5
    B ---------------- 4.1 x 10^-7
    C ------ .411 x 10^-6 = 4.11 x 10^-7
    D .04001 x 10^-5 = 4.001 x 10^-7

    The largest number is the one with the largest exponent
    since -5 > either -6 or -7
    your choice of A is correct

  • Math -

    Yeah that's what I thought. But I wasn't sure which was greater, the larger exponent or the smaller one. It's kinda confusing when your dealing with decimals and negative exponents. But thankss :)

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