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Category:  Algebra Sort By:  
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Richard J. Raridon  
U.S.
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I can answer questions in physics, chemistry, algebra, trigonometryAvailable
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Socrates  
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Any questions on High School Algebra, College Algebra, Abstract Algebra. I can help with word problems, solving equations, trigonometry, inequalities, Gaussian Elimination, Linear Algebra, groups, fields, you name it!On Vacation
returns 10/20/2008
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VOLUNTEER TO BE AN EXPERT IN THIS CATEGORY

Recent Answers
2008-10-09  algrebra!!!:   multiply the 1st eq. by 3 to get 0.9x+2.4y = 10.8 multiply the 2nd eq. by 8 to get 5.6x+2.4y = -45.6 subtract the 1st from the 2nd to get 4.7x = -56.4 so x = -12 and then y = 9 multiply the 1st eq....
2008-10-03  algebra-linear equations:   1. I presume you mean y=2x+3 and y=4x+7 so 2x+3 = 4x+7 giving you x = -2 and y = -1 2. multiply the 1st eq. by 3 to get 15x-21y = -138 and multiply the 2nd eq. by 5 to get -15x-20y = 15 add those...
2008-09-29  Percentages:   You can either use substitution or addition and subtraction. In this case, I multiplied the 1st eq. by 2 to get 2x+2y = 2000 and the 2nd eq. by 100 to get 5x+2y = 4400 Now if you subtract 2x+2y = 2000...
2008-09-28  solving by substitution/algebra:   when you write 1/5x it looks like you could be dividing 1 by 5x. for clarity, you should write them (1/5)x-(3/8)y = 2 and (-5/6)y+4 = (1/3)x multiply the 2nd eq. by 3 to get x = (-5/2)y+4 substitute...
2008-09-24  College Algebra 116:   1. a. 44m, b. 19m 2. a. 36, b. 54 3. If your equation is correct, t has to be between 1 and 9 minutes. 4. a. 9, b. 6 5. m > 2 6. x=-5, y=1 7. I can't graph it for you. Simply draw the line 5y-6c=30...
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