# Questions on Algebra: Systems of Linear Equations answered by real tutors!

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 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 252392: A 31-inch-square TV is on sale at the local electronics store. If 31 inches measure of the diagonal of the screen, use the Pythagorem to find the legnth of the side of the screen. Click here to see answer by edjones(7569)

 Question 252498: Solve the following system of equations algebraically and check: 4x - 5y = 18 3x - 2y = 10 Click here to see answer by jim_thompson5910(28598)

 Question 252576: I am trying to find out two symmetrical points from the equation y= -1/3(x-5)^2 -8 the vertex is 5,-8 and the symmetry axis is x=5 the parabola is concave down as -1/3 is a negative. I am sruggling to find the two points so i can do a graph. Click here to see answer by Edwin McCravy(8909)

 Question 252597: Solve the following system of equations algebraically: 3x+2y=4 4x+3y=7 Click here to see answer by jim_thompson5910(28598)

 Question 252604: There are 35 tickets to be sold for the dance. The number of tickets sold to seniors must be four times the number of tickets sold to juniors. please give me 2 linear equations and a solution. A diamond today costs 10\$ more than twice what it cost last year. The sum of the cost (last year and this year) is 2500\$. What is the cost of last years diamond? i need 2 linear equations and a solution for this question also. THANK U SO MUCH! Click here to see answer by drk(1908)
 Question 252604: There are 35 tickets to be sold for the dance. The number of tickets sold to seniors must be four times the number of tickets sold to juniors. please give me 2 linear equations and a solution. A diamond today costs 10\$ more than twice what it cost last year. The sum of the cost (last year and this year) is 2500\$. What is the cost of last years diamond? i need 2 linear equations and a solution for this question also. THANK U SO MUCH! Click here to see answer by jim_thompson5910(28598)

 Question 252579: how can you figure out two symmetrical points from these two equations. y=5(x+6)^2 and y= -3/5(x-3)^2 I need to have the work done so i can learn from this and figure out other equations. I am not understanding. thank you. Click here to see answer by stanbon(57387)
 Question 252579: how can you figure out two symmetrical points from these two equations. y=5(x+6)^2 and y= -3/5(x-3)^2 I need to have the work done so i can learn from this and figure out other equations. I am not understanding. thank you. Click here to see answer by dabanfield(803)

 Question 250702: The sum of two numbers is -64. Twice the first number is 1 more than the second. Find the two numbers Click here to see answer by drk(1908)

 Question 250700: A 50 foot pipe is is cut into two pieces. The length of 1 piece is 9 times the length of the other. What is the length of the longer piece? Click here to see answer by drk(1908)

 Question 252709: Trying to develop a linear equation for: Gas used: 5, 8, 12, 15, 18, 20, 22, 25 Miles driven, 80, 100, 180, 225, 280, 290, 320, 375 Click here to see answer by drk(1908)

 Question 252777: question 1:joe and janna leave home at the same time traveling in opposite directions. joe drives 45 miles per hour and janna drives 40 miles per hour. in how many hours will they be 510 miles apart? Click here to see answer by richwmiller(9143)

 Question 252849: y= 5/6x + 1/6 y= 7/6x + 11/6 Click here to see answer by richwmiller(9143)

 Question 252907: If p = 2ak^2, find p when a = -1 and k = 3 Click here to see answer by drk(1908)

 Question 252948: Here is the problem. Find the missing co-efficient and write the completed equation Ax + 3y = 5 (2,1). We have answers from the teacher and our answer doesn't match Click here to see answer by hokies(65)
 Question 252948: Here is the problem. Find the missing co-efficient and write the completed equation Ax + 3y = 5 (2,1). We have answers from the teacher and our answer doesn't match Click here to see answer by drk(1908)

 Question 253075: Solve the system: x + y - z = 2 2x + y + z = 3 3x + y + z = 5 Click here to see answer by Alan3354(30993)

 Question 253107: I need some help with a math question. solve the linear system. 3x-2y= -19,2y= 2x+16 Click here to see answer by palanisamy(496)
 Question 253107: I need some help with a math question. solve the linear system. 3x-2y= -19,2y= 2x+16 Click here to see answer by jim_thompson5910(28598)

 Question 253239: I have these two equations: 1/3x+y=1 and -4x+y=1 I have to solve it using elimination. What do I do to isolate a single variable? Click here to see answer by edjones(7569)

 Question 253240: I have an equation that has x over 2, like this: y=x/2 Is it the same as 1/2x? Click here to see answer by drk(1908)
 Question 253240: I have an equation that has x over 2, like this: y=x/2 Is it the same as 1/2x? Click here to see answer by edjones(7569)
 Question 253240: I have an equation that has x over 2, like this: y=x/2 Is it the same as 1/2x? Click here to see answer by unlockmath(1603)

 Question 253245: I am trying to solve these equations. We are to graph the system and estimate the solution then check the solution algebraically: 2x-3y = -2 x+y = -6 This is what I have done so far and it isn't coming out correctly: 2x-3y = -2 2x+2=3y 2/3x + 2/3 = y x+y= -6 x+6= -y I plotted the line at (0,2/3) (3, 2 2/3) and at (-3, -1 1/3) The book says I am wrong and I don't understand why. Please help! ANy help you can give would be greatly appreciated. Thank you. Click here to see answer by jim_thompson5910(28598)

 Question 253256: Please help me solve this linear system equation: x+y=10 2x=y-13 Need to find x and y also could you please give step by step how you solved the equation... Thank you! Click here to see answer by jim_thompson5910(28598)
 Question 253256: Please help me solve this linear system equation: x+y=10 2x=y-13 Need to find x and y also could you please give step by step how you solved the equation... Thank you! Click here to see answer by richwmiller(9143)

 Question 253260: Please help me solve this linear system equation: x+y=10 2x=y-13 Need to find x and y also could you please give step by step how you solved the equation... Thank you! Click here to see answer by jim_thompson5910(28598)