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Math
Find the value of x. The area of a rectangle = 105 The length is 2x+1 Width is x __________________________________ I tried solving it : Arec = l x w 105 = (2x+1)x 105 = 2x^2 + x 0= 2x^2 + x  105 This is where I get stuck on...
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Calculus
The cost (in dollars) of producing x units of a certain commodity is c(x)=5000+10x+0.05x^2 Find A=100 to x=105 so far i got yy/xx= C(105)C(100)/105105 i don't understand how it comes out to be 101.25/5 please help me
asked by THU on October 27, 2007 
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A new car is sold for its sticker value of $19,400. Three years later, the customer returns to the car dealership to trade the car in. She is told that her car now has a value of $12,105. What is the rate of decline in the value
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asked by Tom on November 13, 2012 
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Im so confused with these questions: which of the following numbers are composite? 0,1,15,19,23,31,49,55,59,87,91,97,103,105 A. 1,23,31,59,91 B. 15,49,55,87,91,105 c. 0,1,19,23,31,105
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I don;t know how to solve the following equation. 9+6x=6x+105 I have 6x +6x 105 105 96=12x 12 12 x=8
asked by Josh on October 21, 2010 
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I don;t know how to solve the following equation. 9+6x=6x+105 I have 6x +6x 105 105 96=12x 12 12 x=8
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PreCalc
Could someone please check theseI had tried one last night but it was really wrong so I'm been workinghopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x10 =0 2x^2 +
asked by Sheila on September 7, 2011 
PreCalcPlease check my answerI think I have it
Could someone please check theseI had tried one last night but it was really wrong so I'm been workinghopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x10 =0 2x^2 +
asked by Sheila on September 7, 2011 
PreCalcPlease check my answerI think I have it
Could someone please check theseI had tried one last night but it was really wrong so I'm been workinghopefully these are correct. What are the roots of the equation and answers have to be simplified 2x^2 + 5x10 =0 2x^2 +
asked by Sheila on September 7, 2011 
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1 2/5 divided by 21 Which is correct? A. 21/1 x 5/7 = 105/7 =15 or B. 1/21 x 7/5 = 7/105 / 7/7 = 1/15 Neither is correct. The answer is (2/5)/21 = 2/(5*21) = 2/105. Are you sure you copied the problem correctly? 1 2/5 divided by
asked by Alisha on February 22, 2007