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    qwertyuioop's Avatar
    qwertyuioop Posts: 87, Reputation: 1
    Junior Member
     
    #1

    Jun 14, 2012, 07:48 AM
    scientific notation
    ik no how 2 do the whole thing besides part of the last step
    (7.82 x 10^4)(3.4 x 10-9)
    26.588 x 10^-5
    2.6588 x 10^-4
    2.7 x 10-9
    I don't know if the last part is correct??
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
     
    #2

    Jun 14, 2012, 07:59 AM
    Quote Originally Posted by qwertyuioop View Post
    ik no how 2 do the whole thing besides part of the last step
    (7.82 x 10^4)(3.4 x 10-9)
    26.588 x 10^-5
    2.6588 x 10^-4
    So far so good...

    Quote Originally Posted by qwertyuioop View Post
    2.7 x 10-9
    When you rounded the value of 2.6588 to 2.7 why did you change the exponent from -4 to -9? Just leave it as -4.
    qwertyuioop's Avatar
    qwertyuioop Posts: 87, Reputation: 1
    Junior Member
     
    #3

    Jun 14, 2012, 08:01 AM
    Oh you duh!! Thanks!

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