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Math Help - Pre-Alg questions.

  1. #1
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    Pre-Alg questions.

    I received a pre-alg worksheet in class a while back, but have forgotten/never learned two of the problem methods. They are both because i forgot what the symbol means...

    I don't know how to write these questions, so i scanned them. i don't understand what the 3 means on the right one, and i think i got the left one right... that check-mark symbol just means to find the square root, right?


    And this one. What does the / part mean?



    Thanks in advance.
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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Nightfire View Post
    I received a pre-alg worksheet in class a while back, but have forgotten/never learned two of the problem methods. They are both because i forgot what the symbol means...

    I don't know how to write these questions, so i scanned them. i don't understand what the 3 means on the right one, and i think i got the left one right... that check-mark symbol just means to find the square root, right?


    And this one. What does the / part mean?



    Thanks in advance.
    I'm not clear on what problem a) is.

    For problem b) \sqrt[3]{n} indicates the "cube root" of n. You problem is asking you "What number, when cubed, gives 27?" Note that:
    \sqrt[3]{27} = \sqrt[3]{3^3} = 3

    -Dan
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  3. #3
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    on problem a), i just added the .25 . if i was right in the check mark thing wanting the square root of the given number, then .25 would be it.
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  4. #4
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Nightfire View Post
    on problem a), i just added the .25 . if i was right in the check mark thing wanting the square root of the given number, then .25 would be it.
    The square root of 1 is not 0.25, if that is what you are trying to say.

    -Dan
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  5. #5
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    i see what i did wrong.
    i was thinking of the original mistakes i made when i was first learning square roots, because it's been so long...
    i was thinking along the lines of "Square = four sides, four corners. The center of the square is the number i want, and the corners must have all the numbers that add up to it."
    it was because of a diagram the teacher made that i misinterpreted. ok, i see now. thanks.
    Last edited by ThePerfectHacker; March 27th 2008 at 06:23 PM.
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