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

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations -> Questions on Algebra: Systems of Linear Equations answered by real tutors!      Log On

 Ad: You enter your algebra equation or inequality - Algebrator solves it step-by-step while providing clear explanations. Free on-line demo . Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Linear Solvers Practice Answers archive Word Problems Lessons In depth

 Question 274595: 2x - 12y Click here to see answer by Alan3354(30993)

 Question 274733: how do i solve the linear equation 3x+y=20 2x+2y=24 Click here to see answer by checkley77(12569)

 Question 274750: 7. How do you solve this equation?What happens to the graph of the line y = 2x - 5 when the equation is changed to y = 5x + 6? Click here to see answer by checkley77(12569)

 Question 274749: 6. I need help solving this equation.What happens to the graph of the line y = 3x -2 when the equation is changed to y = 3x +6? Click here to see answer by checkley77(12569)

 Question 274747: I need help solving this problem.You are sliding a big cabinet down a truck ramp for a customer. You must maintain control of the cabinet because it is very heavy. There are 2 ramps in the building. The equation of ramp 1 is y = 2x + 7 and the equation of ramp 2 is y = 3 x + 7. Which is the safest ramp to slide the cabinet down without losing control and why? Click here to see answer by ankor@dixie-net.com(15649)

 Question 274864: Solve by elimination method 9/2x-4y=-3 4/3x-1/2y=7/6 Click here to see answer by ankor@dixie-net.com(15649)

 Question 274912: solve by substitution method 3x + 8y = 4 12y +6x = -1 Click here to see answer by JBarnum(2044)

 Question 274925: Solve using the elimination method: y=2/5 x-7, y=2/5 x+4 Click here to see answer by JBarnum(2044)

 Question 274922: solve using the substitution method: 2(x-y)=3+x, x=3y+4 Click here to see answer by user_dude2008(1861)

 Question 274930: A goldsmith has two alloys that are different purities of gold. The first is three-fourths pure gold and the second is five-twelfths pure gold. How many ounces of each should be melted and mixed in order to obtain a 6-oz mixture that is two-thirds pure gold? Click here to see answer by checkley77(12569)

 Question 274919: y=1.2x-32.7, y=-0.7x+46.15 Click here to see answer by edjones(7569)
 Question 274919: y=1.2x-32.7, y=-0.7x+46.15 Click here to see answer by checkley77(12569)

 Question 274940: A car travels from one town to another at a speed of 32 mph. If it had gone 4 mph faster, it could have made the trip in 1/2 hr less time. How far apart are the towns?. Click here to see answer by josmiceli(9671)
 Question 274940: A car travels from one town to another at a speed of 32 mph. If it had gone 4 mph faster, it could have made the trip in 1/2 hr less time. How far apart are the towns?. Click here to see answer by dabanfield(803)

 Question 275008: Using the addition method 7x-4y=14 -7x+6y=11 Click here to see answer by jim_thompson5910(28593)

 Question 274981: What is the slope-intercept equation for the line below? (4,1) (0,-4) Click here to see answer by jim_thompson5910(28593)

 Question 275255: Andrew and Joseph took a trip to Vintage Vinyl Record Store at the store Andrew bought 6 records and 3 CDs for a total of \$85.23. Joseph bought 4 records and 3 CDs for a total of \$67.81 please help me write and solve a system of linear equations to find the cost of an individual record and an individual CD? thank you! Click here to see answer by stanbon(57323)

 Question 275278: in your pocket you have a total of \$3.55 in both quarters and dimes. you have a total of 22 coins in your pocket, only quarters and dimes. Write and solve a system of linear equations to find how many quarters and how many dimes you have in your pocket. i don't see that there is enough information,so i don't know what to do with the numbers...can you please help me? Click here to see answer by Greenfinch(383)

 Question 275277: Andrew and Joseph took a trip to Vintage Vinyl Record Store at the store Andrew bought 6 records and 3 CDs for a total of \$85.23. Joseph bought 4 records and 3 CDs for a total of \$67.81 please help me write and solve a system of linear equations to find the cost of an individual record and an individual CD? thank you! Click here to see answer by Greenfinch(383)

 Question 275301: A goldsmith has 2 alloys that are different purities of gold. the first is three-fourths pure gold and the second is five-twelfths pure gold. how many ounces of each should be melted and mixed in order to obtain a 6 oz. mixture that is two-thirds pure gold? Click here to see answer by stanbon(57323)

 Question 275305: An isosceles triangle in which angles B and C have the same measure. Find the measure of each angle whose degree is represented with variables. A= 4x + 2y B= 9y - 2 C= 10x + 10 The assignment calls for setting it up as a system of equations and solving the problem. I have no idea where to even begin. I tried something like 4x + 2y = 180- 9y -2 + 10x + 10 that definately was not right! Lol! I would appreciate any help. Click here to see answer by Greenfinch(383)

 Question 275331: On a bus trip Frank is flying from new york to london,which are 3600 miles apart. With the wind current the flight there only takes 6 hours. On the return trip the flight takes 8 hours against the wind. Write and solve a system of linear equations to determine the airspeed and the wind speed. please help me solve this word problem thank you very much! (in advance) Click here to see answer by stanbon(57323)
 Question 275331: On a bus trip Frank is flying from new york to london,which are 3600 miles apart. With the wind current the flight there only takes 6 hours. On the return trip the flight takes 8 hours against the wind. Write and solve a system of linear equations to determine the airspeed and the wind speed. please help me solve this word problem thank you very much! (in advance) Click here to see answer by Greenfinch(383)
 Question 275331: On a bus trip Frank is flying from new york to london,which are 3600 miles apart. With the wind current the flight there only takes 6 hours. On the return trip the flight takes 8 hours against the wind. Write and solve a system of linear equations to determine the airspeed and the wind speed. please help me solve this word problem thank you very much! (in advance) Click here to see answer by dabanfield(803)

 Question 275222: How to Solve 2/3x- y+-4 -5x+y= -9 Click here to see answer by dabanfield(803)

 Question 275521: if x is an integer and -17/3 < x < 20/3, how many integers are there in the interval? Click here to see answer by Theo(3460)

 Question 275482: -9 + 4x < 2x - 3 Solve using the addition and multiplication principles. Click here to see answer by checkley77(12569)

 Question 275993: can you please answer my question? Graph the system of linear equations. Does the system have exactly one solution no solution or infinitely many solutions? Click here to see answer by richwmiller(9135)

 Question 276171: Write an equation for the line described. Write the equation in the form specified. Parallel to y=-2, though (8'4) Would the answer be y=4 Click here to see answer by scott8148(6628)

 Question 270496: Please explain this linear equation: If x + y = 15 and x -y = -19 then xy = ? Thanks, Jesse Evans jesseevans@hughes.net Click here to see answer by Alan3354(30993)

 Question 276359: Four times the difference of a number and one is equal to six times the sum of the number and three. Find the number. Thank you! Click here to see answer by ankor@dixie-net.com(15649)

 Question 276460: can someone please breakdown the process of elimination in algerbra???? here is an example the teacher gave me please help me break this down so I can understand how the teacher got this answer 5x+3y =_11 and 7x-2y=19 the teacher says that this is the answer ( 35/31 -172/31) how did he get this? Click here to see answer by checkley77(12569)

 Question 276169: What is the range and domain of the linear regression line y=3.8x+4.5 Click here to see answer by user_dude2008(1861)

 Question 276659: System of Linear Equations and Problem Solving: Can someone show me how to set with this word problem please? An airplane traveled 645 mph with the wind and 575 mph against the wind. Find the speed of the plane in still air and the speed of the wind. Click here to see answer by richwmiller(9135)

 Question 276676: Systems of Linear Equations word problem: Can someone tell me how I set up this word problem please? A boat traveled 27.5 mph with the current and 12.5 mph against the current. Find the speed of the boat in (still) water and the speed of the current? Click here to see answer by richwmiller(9135)

 Question 276604: I wasn’t sure if you would be able to help me with this because you cant see the diagram that I have, but I will try to explain it the best that I can. The diagram represents weights on a see-saw. The weight labeled 10 is on the left side, the weight labeled 4 is on the right side, the variable y is on the left side and the variable x is on the right side. The distance between the weights is 21. a) Write a system of equations for the diagram. b) Solve the system to find x and y. I know this is asking a lot, but I appreciate any help/advice you can give me. Thank you so much. Click here to see answer by scott8148(6628)

 Question 276706: Systems of Linear Equations word problems: Find how many ml of 3% acid solution and 7% acid solution should be mixed to yield 120ml of 5% acid solution. My answer is 60ml of each solution. Is this correct? Click here to see answer by scott8148(6628)

 Question 276812: hello? Click here to see answer by Alan3354(30993)

 Question 276908: what are the slope and the y-intercept of the graph of the equation 4x-2y=5? Click here to see answer by solver91311(16877)

 Question 277132: solve by the substitution method 9x+4y= -24 x=20-8y Click here to see answer by CharlesG2(828)

 Question 277201: qhT IS THE EQUATION LINE THAT PASSES THROUGH (-4,4) AND (8,8) Click here to see answer by JBarnum(2044)

 Question 277245: The perimeter of a rectangle is 12 meters. Its length is twice its width. Find the dimensions of the rectangle. Click here to see answer by checkley77(12569)

 Question 277287: the sum of 3 times one number and twice a second is -1. the ratio of twice the first to 3 times the second is -4:3. what are the numbers? so i know the first equation is 3x+2y=-1 and i can get multiple solutions, but none of them fit the second part what do i do? Click here to see answer by jim_thompson5910(28593)

 Question 276088: I'm having trouble figuring out this lesson in my algebra class, I am taking an online course, and it isn't giving me clear enough information. If you could please help me I would really appreciate it, thank you. Click here to see answer by Alan3354(30993)

 Question 277802: For The Equation y=2(x)+15,and y=4x+7. Find an x-value that gives the same y-value for both equations Click here to see answer by checkley77(12569)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845