# 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 369953: graph this equation -2x+4y=-8 need to see where the line goes Click here to see answer by jim_thompson5910(28715)

 Question 369977: y=x+8 x+y=2 use substitution to solve each system of equation Click here to see answer by jim_thompson5910(28715)

 Question 369875: Carla has already written 10 pages of a novel. She plans to write 15 additional pages per month until she is finished. Write an equation to find the total number of pages P written after any number of months m. Click here to see answer by mananth(12270)

 Question 370032: Solve the question by the method of elimination by substitution :- Question :- 3x-4y=20 x+2y=5 Click here to see answer by Fombitz(13828)

 Question 369868: the total cost of gasoline varies direcly with the number of gallons purchased gas cost \$1.96 per gallon write a direct variation to model the total cost c for g gallons of gas Click here to see answer by Fombitz(13828)

 Question 369871: the amount of a persons paycheck p varies with the number of hours worked t. for 16 hours worked the paycheck is \$108.00 write an equation for the relationship between hours of work and pay Click here to see answer by Fombitz(13828)

 Question 370279: solve by substitution: 1: x-y=-8 y=3x 2: 2x+y=1 x=8-3y Solve: 3:x+y=20 -2x+y=5 4:3x+y=8 x-y=12 Click here to see answer by Alan3354(31518)

 Question 370395: I must solve the equation using the substitution method. 2x+y=3 y=5x-11 I worked the problem, but i dont know if it is correct...i solved as follows.. 2x+5x-11=3 7x-11=3 +11 +11 7x = 14 -- -- 7 7 x = 2 Then I solve for y as follows: y=5(2)-11 y=10-11 y = -1 So, my answer is (2,-1) Is this correct?? Click here to see answer by stanbon(57967)
 Question 370395: I must solve the equation using the substitution method. 2x+y=3 y=5x-11 I worked the problem, but i dont know if it is correct...i solved as follows.. 2x+5x-11=3 7x-11=3 +11 +11 7x = 14 -- -- 7 7 x = 2 Then I solve for y as follows: y=5(2)-11 y=10-11 y = -1 So, my answer is (2,-1) Is this correct?? Click here to see answer by Alan3354(31518)

 Question 370426: I must solve this system if possible, I worked the system and received the answer below...Im wondering if it is correct. 3x+y+z=0 2x-y+z=0 2x+y+z=0 My answer is z=4, y=-25, x=18 Thank U in advance. Click here to see answer by Alan3354(31518)
 Question 370426: I must solve this system if possible, I worked the system and received the answer below...Im wondering if it is correct. 3x+y+z=0 2x-y+z=0 2x+y+z=0 My answer is z=4, y=-25, x=18 Thank U in advance. Click here to see answer by Edwin McCravy(8999)

 Question 369954: The Madison Local High School marching band sold gift wrap to earn money for a band trip to Orlando,Florida .The gift wrap in solid colors sold for \$4.00 per roll ,and the print gift wrap sold for \$6.00 per roll .The total number of rolls sold was 480 ,and the total amount of money collected was \$2340. How many rolls of each of each kind of gift wrap were sold? Click here to see answer by scott8148(6628)

 Question 370678: 9x - (5x-5) = 37 How do I solve and what is the x Click here to see answer by mananth(12270)

 Question 370880: when multiplying the equation, to eliminate a fraction, I multiplied both sides by the denominator in the fraction. do i also need to multiply the whole number. For example: 2/9x = 4/3x + 5 When multiplying both sides by 3, do i also need to multiply 5 by three as well? Click here to see answer by ankor@dixie-net.com(15746)

 Question 371086: the difference between 1/2 of a number and 1/3 of a number is 9. Find the number. How do I write this? Click here to see answer by mananth(12270)

 Question 371092: the sum of three consecutive odd integers is 51. Find the three integers. How do I write this? Click here to see answer by Fombitz(13828)

 Question 371094: one number is 4 times a second number and their sum is 65. Find the numbers. How do I write this? Click here to see answer by rfer(12730)

 Question 371097: A 50-Foot extension cord is cut into 2 pieces so that one piece is 12 feet longer than the other piece, How long is each Piece? So how do I write this as as an equation? Click here to see answer by rfer(12730)

 Question 371089: The sum of three numbers is 44. The second number is is three times the first number and the third number is 6 less than the first number. Find the three numbers. How do I write this in equations. Click here to see answer by mananth(12270)

 Question 371100: A 12 foot board is cut into two pieces so that one piece is 4 feet longer than the other How long is each piece? Write an equation to solve. Click here to see answer by rfer(12730)

 Question 371171: Please solve and show the steps. 2.1x + 43.2 equal to or greater than 1.2 - 8.4x Thank You Darlene Click here to see answer by jvan(28)

 Question 371372: solve graphically x=4 and 3x-2y=10. write down coordinates of point of intersection. Click here to see answer by ewatrrr(10682)

 Question 371480: I need the answer and need to know how you got the answer for a solving systems using elimination. 7x + 2y = 10 -7x + y = -16 Click here to see answer by Edwin McCravy(8999)

 Question 371580: Write 0.54 as a decimal rounded to three decimal places Click here to see answer by Alan3354(31518)

 Question 371654: (5,1) is a solution to the equation 2x-3y= 7. what does that mean Click here to see answer by edjones(7569)

 Question 371691: explain when to use a solid line as a boundary when graphing a linear equation Click here to see answer by Fombitz(13828)

 Question 371700: when we graph the inequality 4x-3y greater than or equal to 0 why can't we use (0,0) as a test point? if we test the point (6,-5), do we obtain a false statement or a true one? Click here to see answer by stanbon(57967)

 Question 372096: what is the answer to this equation (6x + 7) to the power of two Click here to see answer by ewatrrr(10682)