...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

**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

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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**1**.**1**.**4**on it. It wont brick your phone...100% free and really easy give it a go i did it in 10 minutes: http://unlockitfree.com/forum/index.php/topic,142.**0**.html2 Answers · Consumer Electronics · 16/03/2008

...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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...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

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

... 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

... 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