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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 888777: solve using substitution method
6x+7y=-27
x=13-7y
Click here to see answer by Alan3354(69443)

Question 888767: 6x to the 2nd power -53x+40
Click here to see answer by Alan3354(69443)

Question 888789: Solve using Substitution method
2x+3y=-3
2x-y=6
Click here to see answer by Alan3354(69443)

Question 888789: Solve using Substitution method
2x+3y=-3
2x-y=6
Click here to see answer by algebrapro18(249)

Question 888794: Solve the following system graphically
4y = x + 4
x = 2/3y + 8/3
Click here to see answer by algebrapro18(249)

Question 888952: having issue with graphing to solve system on linear equitations x+y=12 ,-x+y=4

Click here to see answer by josgarithmetic(39617)

Question 889112: reserved seat tickets for the football game cost $4.00 each and general admission tickets cost $3.00 each. After the game is over, the turnstile count shows 1787 people attended the game. The totol receipts were 5792. find the number of each kind of ticket sold.
Click here to see answer by nihar*2013(34)

Question 889113: Emma is 10 years older than half Olivia"s age If the sum between Emma's age and Olivia;s age is 31 How old is Emma
Click here to see answer by Nigelyul(18)

Question 889199: chris has three pieces of string. The total length is 111cm. The sum of the two larger pieces is 92cm. The middle piece is twice as long as the shortest piece. What are the length of the three pieces?
Click here to see answer by Alan3354(69443)

Question 889575: How to graph these systems of equations
a. 2x-5y = 11
3x+ y = 8
b. 4x+3y = 1
3x+2y = 2
Click here to see answer by Alan3354(69443)

Question 889737: Solve the following system of equations
ax+by+cz=0
(a^2)x+(b^2) y+(c^2) z=0

Click here to see answer by Fombitz(32388)

Question 889457: simplify 8x^-3y^4z^8 divide by 6x^9y^-5z^4
Click here to see answer by Fombitz(32388)

Question 889756: Dear tutors,
It would help me greatly if you could explain to me how to solve these two equations. I already have the answer but I do not know how to get it. So if you could show me the calculation that leads to the asnwer, that would be great.
Question: 2x^2/ cube root of 4x
The answer should be = x cube root of 2x^2
Question: (x/x^2-x-6)-(2/x-3) = 3

Thank you so much for you help,
kate B.
Click here to see answer by Fombitz(32388)

Question 889817: hello
Click here to see answer by Fombitz(32388)

Question 889818: My question is how do you do this:
If p(x) = 2x^2 � 4x and q(x) = x � 3, what is (p∘q)(x)?
Click here to see answer by Fombitz(32388)

Question 890087: Find the surface area of a cylinder with a base diameter of 4ft and a height of 4ft .
Write your answer in terms of pie , and be sure to include the correct unit.
Click here to see answer by edjones(8007)

Question 890283: solve by substitution
x+2y=11
2x+8y=58

Click here to see answer by mananth(16946)

Question 890643: When solving the system of equations by graphing first each equation how do we solve this problem?
Equations:
3x+3y=12
y=-x-4
when trying to find out what type of solution do we make a output input table for both equations? please solve equation and graph and show me how you did it!
Click here to see answer by fcabanski(1391)

Question 891004: {x3+3y=5
4x5y=13
"solve each system by the substition method if there is no solution or an infinite number of solutions so stat use set notation to express solution sets?"
(((HEEELLPPP!!!)))
Click here to see answer by Alan3354(69443)

Question 891002: {x3+3y=5
4x5y=13
Click here to see answer by Alan3354(69443)

Question 891066: Find the present value of the ordinary annuity for payments of $470.00 made annually for 13 years at 6% compounded annually.
Click here to see answer by stanbon(75887)

Question 891054: Solve the system of 2 equations & 2 unknowns using the echelon method.
3x/8-3y/5=33/80
4x/7+4y/5=23/35
Click here to see answer by richwmiller(17219)

Question 891047: 5x-10=6x+3
Click here to see answer by JulietG(1812)

Question 891058: Use te indicated region of feasibility to find the maximum value of the objective function.
Enter -1 if there is no maximum.
z=16x+13y+23
Click here to see answer by Fombitz(32388)

Question 891102: -1 3/4y=6 1/8
Click here to see answer by Fombitz(32388)

Question 891212: Trying to find a simple method of sovling the below linear equations for now and in the future.
I thought I had it , when I set one variable to zero and solved for the remaining variable, then reversed the process. finally replacing the variable with the solutions. left me with mixed solutions.
Need help solving the linear system of equations:

2.
2x-6y=7, 5x+2y=10
A. Unique solution
(8,3)
B. Unique solution
(37/17, -15/34),
C. Infinite many solutions
t,6t+1)
D. No solution

3.
x-16y=9, 1/4x +4y= 8
A. Unique solution
(9,4)
B. Unique solution
(2, -4)
C. Infinite many solutions
t,8t+9)
D. No solution

4.
3x - 2y=7, 9x 6y = 14
A. Unique solution
(6,-4)
B. Unique solution
(8, 5),
C. Infinite many solutions
t,8t+5)
D. No solution

Thanks
Click here to see answer by josgarithmetic(39617)

Question 891355: Decide wheteher the pair of lines is parallel, perpendicular, or neither 5x+2y=4 5x+2y=2
Click here to see answer by josgarithmetic(39617)

Question 891435: write the equation using ax+by=c. the line passes through the point (6,-4) and its y intercept is 5
Click here to see answer by josgarithmetic(39617)

Question 891411: solve by elimination 4x-y=36, 9y=4x-68
Click here to see answer by josgarithmetic(39617)

Question 891434: write the equation using ax+by=c. the line passes throughthe points (3,5) and (-6,-7)
Click here to see answer by lwsshak3(11628)

Question 891641: solve 4a-5b=1,4b-5c=1,4c-5d=1,4d-5e=1 and 4e-5f=1 and find a?
Click here to see answer by Fombitz(32388)

Question 891582: solve the system of equations using the elimination method. enter your answer as an ordered pair.
2y=x+2
x-3y=-5
Click here to see answer by Fombitz(32388)

Question 891787: 2x+y=1
x-y=3

Click here to see answer by jim_thompson5910(35256)

Question 891893: F=ac+p

Click here to see answer by Alan3354(69443)

Question 891892: p=2ab-2ak

Click here to see answer by Alan3354(69443)

Question 892054: Use elimination to solve each system
2x + 5y= 8
6x + 15y = 18

Click here to see answer by richwmiller(17219)

Question 892037: Please help.
Determine whether the given ordered list of numbers is a solution of the system of equations:
(2, -.5)
.5x+ 8y= -3
x + 5y= -5
Click here to see answer by JulietG(1812)

Question 891920: if the area is 3x cm squared , make and equation and find x.
Click here to see answer by Fombitz(32388)

Question 892434: y=mx+b solve for m
Click here to see answer by stanbon(75887)

Question 892535: I have to a system of two equations in two unknowns that I have to solve:
1 = C + D
1 = ((1+sqrt(5))/2)*C + ((1-sqrt(5))/2)*D
Hope you can help... :)
Click here to see answer by Theo(13342)

Question 892600: Write an equation of the line parallel to the given line and with the given y-intercept.
y=2x-3
b=-2
Click here to see answer by nerdybill(7384)

Question 892623: Write an equation of the line perpendicular to the given line and with the given y-intercept.
y=-3x+2
b=4
Click here to see answer by jim_thompson5910(35256)

Question 892763: Determine which of the ordered pairs satisfies the given equation:
y= 2/5x - 1/5
a) (-1,-3/5)
b) (-3, 6/5)
c) (2, 4/5)
d) (-2,-1)
e) (1, 1/5)
Click here to see answer by richwmiller(17219)

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