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Math Help - Can someone please help me

  1. #1
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    Question Can someone please help me

    ok firstly its algebra:
    It says think of a number, then add 6, now add the number you were first thinking of, divide by 2, subtract 3
    i need this all in algebra
    It started off with:
    think of a number = n
    add 6 = n+6
    but i need to know the rest, so what would the rest of it be?
    add the number you were first thinking of = ?
    divide by 2 =?
    subtract 3 = ?

    and the answer is the number we were first thinking of, so can you please help?
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  2. #2
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    ?

    does anybody know?
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  3. #3
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    Quote Originally Posted by Manjot9999 View Post
    ok firstly its algebra:
    It says think of a number, then add 6, now add the number you were first thinking of, divide by 2, subtract 3
    i need this all in algebra
    It started off with:
    think of a number = n
    add 6 = n+6
    but i need to know the rest, so what would the rest of it be?
    add the number you were first thinking of = ?
    divide by 2 =?
    subtract 3 = ?

    and the answer is the number we were first thinking of, so can you please help?
    x --> x + 6 --> x + 6 + x = 2x + 6 --> (2x + 6)/2 --> x + 3 --> x + 3 - 3 = x.
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  4. #4
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    Quote Originally Posted by Manjot9999 View Post
    does anybody know?
    A bit of patience, please.

    You posted the question only three minutes earlier!!

    As it happens, you got lucky on this occassion and posted the question just as I was passing.

    However, it is more often than not the case that it might take several hours (or longer) before you get a reply ......
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  5. #5
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    thanks but

    thanks for that but it said it was wrong, do yuo know why it might have said that?
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  6. #6
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    hi

    can you go on :

    MyMaths.co.uk - MyMathsBooster6Test

    type in what you told me and it says its wrong, can you go and try please?
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  7. #7
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    Quote Originally Posted by Manjot9999 View Post
    thanks for that but it said it was wrong, do yuo know why it might have said that?
    What is the "it" that said the answer is wrong? The answer I have given is NOT wrong.
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  8. #8
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    ...

    the it is the website that checks it
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  9. #9
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    oh

    sorry you were right, i was doing something else, im really sorry
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  10. #10
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    Quote Originally Posted by Manjot9999 View Post
    can you go on :

    MyMaths.co.uk - MyMathsBooster6Test

    type in what you told me and it says its wrong, can you go and try please?
    Well, the answer I gave:

    x --> x + 6 --> x + 6 + x = 2x + 6 --> (2x + 6)/2 --> x + 3 --> x + 3 - 3 = x.

    was to help you see how to do it!!

    If you'd thought about what I posted, you would have quickly realised that the overall expression is

    (x + 6 + x)/2 - 3.
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  11. #11
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    thanks

    thank you!!!!
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  12. #12
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    can you help with this question now please?

    a trundle wheel is used to measure distances, a person makes a trundle wheel, of diameter 40cm

    what is the circumfrence of the trundle wheel (in cms)?

    The person uses the trundle wheel to measure the length of the school car park, the trundle wheel rotates 46 times, what is the length of the car park to the nearest metre?
    and it says to use pi in all calculations
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  13. #13
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    Forum Rules:

    15)Create a new thread for each new problem. Do not add new problems to existing threads especially when they are not your own thread.
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  14. #14
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    ok

    sorry, i didn't know that
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