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    Help with vector diagrams

    Hi. Two vehicles each travelling at 20ms^-1, approach an intersection. Car A approaches from south, car b from east, what is the velocity of b relative to a. The answer is 28ms^-1 SW. I can get the 28ms^-1, but i cant get the south west, the only rule i know is head to tail. Thanks, if...
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    Question Using Sine rule

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    Economics?

    When price goes up, the demand goes down, when price goes down, demand goes up but flip it. if demand goes down, price should go down, and when the demand goes up, the price will go up. how does this make any sense?
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    Plz help

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    Please help with these questions????? THANKS SO MUCH

    Hey guys!:awesome: I am having some troubles : a) Find x in terms of a and b if: (a^2 b)/x^2 + (1+b/x)a = 2b + (a^2)/x b) Simplify (2^(2n) - 2^(n-1))/(2^n - 2^-1) c) Find smallest integers such that 12 < 2^m/n < 13 THANKS!!!!!
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    Can someone read my story? Thanks :)

    As above? Ill pm it to u :D
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    Can somebody read my short story? Thanks

    As above? I'll PM it to you. Thanks
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