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  1. ...by cross multiplication)_ or 6x-2x=-60+24 or 4x=-36 or x=-9 ans 3) 0 .2x + 4 ( 0 .1x- 0 .3)= 1 . 2 or 0 .2x+ 0 .4x- 1 . 2 = 1 . 2 or 0 .6x= 1 . 2 + 1 . 2 = 2 . 4 0r x= 2 . 4 / 0 .6= 4 ans...

    4 Answers · Science & Mathematics · 19/05/2008

  2. John , since sin x = - 1 / 2 and sin x refers to y-coordinate in circular function, it follows that it is in 3rd or 4th quadrant. What angle that will give us 30 degrees as our...

    2 Answers · Science & Mathematics · 11/05/2013

  3. 2x + y + xy' + 2yy' = 0 . y' = (-y - 2x)/(x + 2y). Evaulated at ( 0 , 1 ), we have... - 1 / 2 . Hope this helps. - John

    2 Answers · Science & Mathematics · 14/05/2008

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    2 Answers · Consumer Electronics · 16/03/2008

  5. ...hr John paints 0 .167 houses/hr together... in an hour (sally s rate + John s rate). to paint a whole house... combined rate: 1 / (5/12) = 12/5 = 2 . 4 hrs = 2 hours, 24...

    2 Answers · Science & Mathematics · 07/10/2008

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    3 Answers · Consumer Electronics · 21/10/2012

  7. ...sally painting speed + john painting speed) now...the above equation.. time = 1 house / ( 1 house/ 4 hours + 1 house/6... time = 24/10 time = 2 , 4 hours <-- your answer 0 , 4 hours = 0 , 4 * 60...

    2 Answers · Education & Reference · 25/01/2011

  8. Do these as rates: Sally can paint 1 / 4 of the house per hour John can paint 1 /6 of the house per...common denominator of 12: (3/12 + 2 /12)T = 1 (5/12)T... (Remember 0 . 4 x 60 = 24 minutes...

    3 Answers · Science & Mathematics · 25/03/2009

  9. ... can paint 1 / 4 of the house John can paint 1 /6 of the house Together they can paint 1 / 4 + 1 /6 = 5/12 of the house...they require 12/5 hours or 2 . 4 hours 0 . 4 hours = 0 . 4 &...

    7 Answers · Science & Mathematics · 01/05/2009

  10. ... can do it ALONE in 4 hours, with... the last 2 . Shortcut... 2 hours + 0 . 4 hours = 2 ... paints 1 / 4 of the house per hour John paints 1 /6...

    4 Answers · Education & Reference · 23/10/2009

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