# Questions on Algebra: Systems of equations that are not linear answered by real tutors!

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 Question 309474: Solve each system of equations. 1. 5x + 4y - z = 1 2x - 2y + z = 1 -x - y +z =2 2. x + y + z = 0 2x +3y + 2z = -1 x - y + z = 2 3. x + 2y = 0 4x - z = 4 5y + z = -1 Click here to see answer by JBarnum(2088)

 Question 309731: i need help solving each system of equations: 1) 2x-y=20 3x+2y=-19 2) x+y=12 2x+y=6 3)y=x+3 -2x+y=-4 4) 4x+y=10 -2x-y=4 5) 2x+y=8 3x+5y=5 Click here to see answer by sayanchakroborty@ymail.com(1)

 Question 310426: f(x) = sqrt(3x-14)-8 how do you find the zeros and graph the results?? Click here to see answer by Fombitz(13828)

 Question 310707: find the value of y when x=-2 for the equation -2x+9y+-5=0. write y as a rational number Click here to see answer by Fombitz(13828)

 Question 310893: Hi, If you could please show me the steps on how to get the answer to this. I am not sure where to start. i really appreciate any help 4x+y+z=3 -x+y-2z=-11 x+2y+2z=-1 Click here to see answer by mollukutti(30)

 Question 311090: Please help with title: solving systems by elimination A chemist has a beaker of a 3% acid solution and a beaker of a 7% acid solution. He needs to make 75ml of a 4% acid solution. complete the table. 3% solutiom + 7% solution = 4% solution Amt of solution x + y = Amt of acid (ml) ____x + ____y = Click here to see answer by checkley77(12569)

 Question 311617: x pounds of candy valued at \$3.50 Per pounds is mixed with y pounds of candy valued at \$4.30 per pound to produce 10 pounds of a mixture selling for \$4 per pound. Fin x and y, the number of pounds of each type Click here to see answer by mananth(13127)

 Question 311834: I need help solving these system of equations: x^2+y^2=9 y=x+3 AND x^2-y^2=9 2x-y=6 Click here to see answer by Alan3354(34674)

 Question 313834: solve the systems of equations by the substitution method: 5x-4y+=30-5x 3x+6=x+5y+15 I added 5x to both sides to get all variables on one side and got 10x-4y=30 now I not sure where to go from here to solve for y....Please help! lilchikcadee@msn.com Click here to see answer by unlockmath(1657)

 Question 314398: Please explain to me the steps in this equation. I am so lost and really would like to be able to do equations like this. Credit goes to http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut7_factor.htm#pst 9x^2-30xy+25y= 3x^2(3x)(5y)+(5y)^2= (3x-5y)^2 Click here to see answer by stanbon(60771)

 Question 314792: Find the solution to the system of equations. 2x+4y+2z=16 3x+2y+2z=13 -4x+5y+3z=15 Click here to see answer by Edwin McCravy(9716)

 Question 314781: Mrs Gonzalez bought centerpieces to put on each table at a graduation party. She spent \$31.50. There are 8 tables each requiring either a candle or vase. Candles cost \$3 and vases cost \$4.25. How many of each type did she buy? Click here to see answer by Fombitz(13828)

 Question 314889: I have a word problem that am having trouble figuring out how to work it out to come up with the answer. Randy invested his inheritance in an account that paid 6.1% interest, compounded continuously. After 5 yrs. he found he now had 51,426.94. what was the original amount of his inheritance? Possible answers: 38,908; 36,908; 23,123.88;37,908 please show work...this is very hard for me as I have never been good at math. Thanks in advance. Click here to see answer by solver91311(18785)

 Question 314890: this word problem uses a formula that the book talked about very briefly and I did not understand it...N=Iekt,where n = number of items in terms of the initial population, I, at time t, and k is the growth constant equal to the % of growth per unit of time an artifact is found at a certain site. If it has 65% of the carbon-14 it originally contained, what is the approximate age of the artifact? (carbon-14 decays at the rate of 0.0125% annually) please show work so I can understand this formula better and how to do the problem. THANKS IN ADVANCE Click here to see answer by nerdybill(7090)

 Question 316438: In the system of equations {2x+6y=5 {x-3y=8, one coordinate of the solution is??? Click here to see answer by Fombitz(13828)

 Question 316592: Use the Gauss - Jordan method to solve the following system of equations. 2x + y - z = -1 x - 2y + 2z = 7 3x + y + z = 4 Click here to see answer by CharlesG2(828)

 Question 316627: Can you show me how to solve for this non-linear equation and how it is graphed? Thank you, LBF TN Click here to see answer by Fombitz(13828)

 Question 316629: Can you show me how to solve for this nonlinear equation and how to graph it? y = x^2 Thank you, Leola Gatlinburg, TN Click here to see answer by Fombitz(13828)

 Question 316637: What is the solution to the following system of equations? -8x + 8y = -16 2x + 6y = -28 Click here to see answer by Fombitz(13828)

 Question 317305: Find the values of and that solve the following system of equations: 3x-4y=20 -8x-5y=25 Click here to see answer by checkley77(12569)