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

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Question 1059203: How can you find the parallel lines for
3X+5y=-1
Click here to see answer by Boreal(15235)

Question 1059326: How do I solve this system using elimination?
-2x+2y+3z=0
-2x-y+z=-3
2x+3y+3z=5
Click here to see answer by josgarithmetic(39618)

Question 1059574: The second of two numbers is 5 more than twice the first. The sum of the numbers is 44
Click here to see answer by Cromlix(4381)

Question 1059668: Y=5x-8 linear or nonlinear

Click here to see answer by rfer(16322)

Question 1059716: y=-3x+x, y=2x-4

Click here to see answer by josgarithmetic(39618)

Question 1059720: A rectangle with it dimensions in centimetres Length up(3y+2)cm and down(x+7)cm and breadth left 2xcm and right (x+y+1)cm
(a) find the value of x and y
(b) the dimension of the rectangle
Click here to see answer by josgarithmetic(39618)

Question 1059728: 4f-2g=3
12f-6g=9
Click here to see answer by Alan3354(69443)

Question 1059727: y=2x
4x-y=8
Click here to see answer by Fombitz(32388)

Question 1059871: in the standard (x,y) coordinate plane, what is the slope of the line 11x +6y =3
Click here to see answer by algebrahouse.com(1659)

Question 1059869: -4x+4=4y
Y=2x
Click here to see answer by algebrahouse.com(1659)

Question 1060075: Solve the exercise by solving a system of equations.
Find the center and radius of the circle whose graph passes through the points
(−5, −1),

(−11, −9),
and
(−4, −8).
(Hint: Use the equation
x2 + y2 + ax + by + c = 0.)
Click here to see answer by josgarithmetic(39618)

Question 1060073: Solve the system of equations. (If the system is dependent, enter a general solution in terms of c. If there is no solution, enter NO SOLUTION.)
2x − y + z = 12
2y − 3z = −16
3y + 2z = 2

Click here to see answer by ikleyn(52794)

Question 1060139: y=3x+2
3x+y=1
Click here to see answer by math_helper(2461)

Question 1060140: 2x+y=8
y=1/2x+1/2
Click here to see answer by Cromlix(4381)

Question 1060138: y=3x+5
x+y=-3
Click here to see answer by Alan3354(69443)

Question 1060138: y=3x+5
x+y=-3
Click here to see answer by Cromlix(4381)

Question 1060155: Find all zeros of f(x)=x^3-x^2+x-21 and write a complete linear factorization of f (x)
Click here to see answer by ikleyn(52794)

Question 1060221: The admission fee at the steamboat springs hot air balloon festival is 1.50 for children and 4.00 for adults. On a certain day 1130 people enter the festival and 2520 is collected. How many children and adults attended? cant figure out a systemically equation for this been stuck for an hour.
Click here to see answer by jorel555(1290)

Question 1060645: Could you please help me. How can I solve this system of equation using the substitution method.
-5x+y=-3
3x-8y=24
Click here to see answer by jim_thompson5910(35256)

Question 1060629: Find the equation of the line through (3,8) and parallel to y=2x-8
Click here to see answer by Fombitz(32388)

Question 1060859: solve the system of equations

3x−4y=8
18x−5y=10

Click here to see answer by Boreal(15235)

Question 1060923: The sum of two numbers is 4. Their difference is 12. What are the two numbers? Write a system of equations for this situation and find its solution. What is 15 more than the smaller of these two numbers?

Click here to see answer by josgarithmetic(39618)

Question 1060924: Keana�s piggy bank contains $4.30 in nickels and dimes only. If she has 59 coins in her bank, then what is the sum of the digits in the number of nickels in Keana�s bank? Write a system of equations for this situation and find its solution.

Click here to see answer by ikleyn(52794)

Question 1060915: The profit per kiloliter from the AP cleaner is $100 and the profit per kiloliter from the IP cleaner is $85. The inventory of
the company shows 480 liters of surfactants, 180 liters of enzymes, and 720 liters of solvents available. Assuming the
company can sell all the cleaner it produces, find the number of kiloliters of each cleanser the company should produce to
maximize profit. What is the maximum profit?
Click here to see answer by ikleyn(52794)

Question 1060927: The x-intercept of a line has a value of and a y-intercept of 7. Another line has a slope that is twice the slope of the first line and has a y-intercept that is 15 more than the first line�s y-intercept. What is the product of the coordinates in the solution to this system? Write a system of equations for this situation and find its solution.

Click here to see answer by ankor@dixie-net.com(22740)

Question 1060979: 4x-12y=24
Click here to see answer by Alan3354(69443)

Question 1060974: Alexa and Brittney are sisters whose current ages have a sum of 43. Three times Alexa�s current age subtracted by four times Brittney�s current age equals the current age of their three-year-old sister, Cheryl. How old is their other sister Denise, who is 5 years younger than Brittney? Write a system of equations this situation and find its solution.
Click here to see answer by josmiceli(19441)

Question 1060925: A high school biology class has 38 students. The number of boys in the class is six less than three times the number of girls in the class. What is the product of the digits in the number of boys in this class? Write a system of equations for this situation and find its solution.

Click here to see answer by KMST(5328)

Question 1060973: The length of a rectangle is 91 less than six times the width of the rectangle. If the perimeter of the rectangle is 84 centimeters, what is the length of the rectangle? Write a system of equations for this situation and find its solution
Click here to see answer by josgarithmetic(39618)

Question 1061087: I have a final tomorrow and I need help. It says to use the substitution method on the equation y/2 -x=1 and the other equation (cause it's in systems of equations) is x+y+7=0. What do I do?
Click here to see answer by josgarithmetic(39618)

Question 1060926: During a twenty-minute period, a total of 77 vehicles (cars and trucks) passed through a toll booth. The number of cars that came through is five more than twice the number of trucks that came through. What is the difference between the tens digit in the number of cars and the ones digit in the number of trucks? Write a system of equations for this situation and find its solution.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1061234:

Which equations represent the data in the table? Check all that apply.

y � 6 = (x + 2)

y � 2 = �(x � 1)

y + 2 = (x � 6)

y � 1 = �(x � 2)

y � 3.5 = �1.25x
Click here to see answer by Edwin McCravy(20056)

Question 1061281: Solve the system using any method.
5x+9y=1125x+9y=112
3x-2y=8
Click here to see answer by Edwin McCravy(20056)

Question 1061407: Solving linear equations with fractional coefficients
3/4x +1/2y=-14
-1/3x+1/6y=7

Click here to see answer by Alan3354(69443)

Question 1061483: Write the equation of a line with a slope of 2 and passing through the point (1,-5).
Click here to see answer by stanbon(75887)

Question 1061487: Write the equation of a line that passes through the points (-3,7) and (3,1).
Click here to see answer by stanbon(75887)

Question 1061487: Write the equation of a line that passes through the points (-3,7) and (3,1).
Click here to see answer by solver91311(24713)

Question 1061475: Write the equation of a line with a slope of -2/3 and a y-intercept of (0,4)
Click here to see answer by josgarithmetic(39618)

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, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515