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  1. u = -b + 21 u = -2b + 30 Check it out - both equations are ...u" already. Thus, -b + 21 = -2b + 30 -b + 2b = 30 - 21 b = 9. u = -b + 21 = -(9) + 21 = 12 u = -2b + 30 = -2(9) + 30 = 12 So, the ...

    2 Answers · Science & Mathematics · 01/06/2010

  2. u will feel it all in u r heart...love is not all butterflies all day long. love...sad....so if u are able to be with someone through good or bad, then u know it is real love. there are alot of other things...

    8 Answers · Family & Relationships · 05/07/2009

  3. firstly you should expand that (u+3)^3 into (u+3)(u+3)(u+3) *remember that foil means first, outer...out using foil method (u+3)(u+3) u^2 +3u +3u + 9 combine like terms u^2 +6u + 9 and finally multiply this by the remaining (u+3) using foil...

    5 Answers · Science & Mathematics · 16/07/2010

  4. | u | = sqrt(3^2 + (-4)^2) | u | = sqrt(9+16) |u| = sqrt(25) |u| = 5

    2 Answers · Science & Mathematics · 07/12/2008

  5. sin(u / 2) = sqrt( (1 - cos(u)) / 2) cos(u / 2) = sqrt( (1 + cos(u)) / 2) tan(u / 2) = sin(u/2) / cos(u/2) = sqrt...sqrt( (8/5) / 2) = sqrt( 4/5 ) = 2 / sqrt(5) = 2 * sqrt(5) / 5 sin(u/2) = 2 * sqrt(5) / 5 sqrt( (1 - 3/5) / 2) = sqrt( (2/5) / 2...

    3 Answers · Science & Mathematics · 06/08/2010

  6. u+12/u^2 + u+2/3u u^3 + 12 + u^3 +2u/3 2u^3 + 2u/3 + 12 6u^3 +2u + 36

    3 Answers · Science & Mathematics · 26/10/2007

  7. u du/(16 + u^2) Let w = 16 + u^2 then dw = 2u du so (1/2) dw = u du We now have (1/2) ∫ dw/w = (1/2) ln w = (1/2) ln (16 + u^2) + C

    3 Answers · Science & Mathematics · 09/04/2011

  8. (u+7)^2 = 2u^2 +8u +42 u^2+14u+49=2u^2+8u+42 0=u^2-6u-7 0=(u-7)(u+1) u-7=0 or u+1=0 u=7 or -1

    7 Answers · Science & Mathematics · 02/11/2008

  9. u = <3, -2, 1 > and v = <2, -3, 1 II u II = √(9+4+1) = √14 II v II = √(4+9+1) = √14 θ = cos...

    3 Answers · Science & Mathematics · 22/10/2010

  10. do u have a sense of humor?what kind is dry, black, or how would u describe your self are u confident was school hard for u what...

    1 Answers · Arts & Humanities · 15/04/2010

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