Please help me REALLY REALLY quick.

Discussion in 'Community Discussion' started by gregdrummeraz, Jun 10, 2008.

  1. gregdrummeraz macrumors 6502

    Joined:
    Jun 7, 2007
    Location:
    Glendale, az
    #1
    Each square root is between two integers. Name the two integers.

    Which do you think?

    5 and 6
    6 and 7
    4 and 5
    7 and 8


    I am seriously confused.. :confused:


    "brain fart"!!!
     
  2. gregdrummeraz thread starter macrumors 6502

    Joined:
    Jun 7, 2007
    Location:
    Glendale, az
    #2
    I POSTED IT WRONG.. HERES THE PROBLEM.


    Each square root is between two integers. Name the two integers.

    √27

    5 and 6
    6 and 7
    4 and 5
    7 and 8
     
  3. richard.mac macrumors 603

    richard.mac

    Joined:
    Feb 2, 2007
    Location:
    51.50024, -0.12662
    #3
    yeh i thought the first question was posted wrong, it made no sense.

    well sqrt(27) = 5.20 (3sf) so thats between 5 and 6… easy! :)
     
  4. swiftaw macrumors 603

    swiftaw

    Joined:
    Jan 31, 2005
    Location:
    Omaha, NE, USA
    #4
    If you don't have a calculator, realize that 25 < 27 < 36, so sqrt(25) < sqrt(27) < sqrt(36)

    Therefore

    5 < sqrt(27) < 6
     
  5. prostuff1 macrumors 65816

    prostuff1

    Joined:
    Jul 29, 2005
    Location:
    Don't step into the kawoosh...
    #5
    um, yeah, this is easy

    5^2 = 25 and 6^2 = 36

    since 27 is between 25 and 36 then the sqrt(27) must be between 5 and 6.
     
  6. gregdrummeraz thread starter macrumors 6502

    Joined:
    Jun 7, 2007
    Location:
    Glendale, az
  7. prostuff1 macrumors 65816

    prostuff1

    Joined:
    Jul 29, 2005
    Location:
    Don't step into the kawoosh...
    #7
    depend on were the negative in -9 is.

    example:

    9^2 = 81
    (-9)^2 = 81
    -(9)^2 = -81

    understand?

    Edit: for your question though the answer is yes. 9 and -9 are the squares of 81
     
  8. richard.mac macrumors 603

    richard.mac

    Joined:
    Feb 2, 2007
    Location:
    51.50024, -0.12662
    #8
    ^ and the sqrt(-81) = 9i

    though that doesnt really apply here :)
     
  9. gregdrummeraz thread starter macrumors 6502

    Joined:
    Jun 7, 2007
    Location:
    Glendale, az
    #9
    What do I press on a calculator to find simplest form of a fraction?

    I am def on my macbook... using leopard. so what would it be?
     

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