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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 1096822: The sum of a certain even no.and the fourth even no. After it is 48 find the number.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1096868: Find the maximum value of the objective function and the values of x and y for which it occurs.
F= 2x+y
3x + 5y *less than or equal to* 45
2x + 4y *less than or equal to* 32
x*greater than or equal to* 0 and y*greater than or equal to*0
Click here to see answer by Fombitz(32388)

Question 1097007: 3x + y = 10
6x + y = 17
using the system of equations above, what is the value of (xy)^2?
Click here to see answer by Alan3354(69443)

Question 1097059: 4x - 2y= 2 +x
8y -7x = -2y -2x
using the system of equations above, what is the average of x and y?
Click here to see answer by amalm06(224)

Question 1097059: 4x - 2y= 2 +x
8y -7x = -2y -2x
using the system of equations above, what is the average of x and y?
Click here to see answer by josh_jordan(263)

Question 1097062: 1/2x + 3y = 2
ax -12y = -8
in this system of equations a is a constant.If the system has infinite solutions, what is the value of a?
Click here to see answer by ikleyn(52786)

Question 1097061: 2/3y + 1/4x = 2
8y + 3x = a
in this system of equations a is a constant.If the system has infinite solutions, what is the value of a?
Click here to see answer by ikleyn(52786)

Question 1097061: 2/3y + 1/4x = 2
8y + 3x = a
in this system of equations a is a constant.If the system has infinite solutions, what is the value of a?
Click here to see answer by josh_jordan(263)

Question 1097061: 2/3y + 1/4x = 2
8y + 3x = a
in this system of equations a is a constant.If the system has infinite solutions, what is the value of a?
Click here to see answer by greenestamps(13200)

Question 1097060: 1/3x - 3/2y = 4
2x -by = 20
in this system of equations b is a constant. If the system has no solution, what is the value of b?
Click here to see answer by josgarithmetic(39617)

Question 1097060: 1/3x - 3/2y = 4
2x -by = 20
in this system of equations b is a constant. If the system has no solution, what is the value of b?
Click here to see answer by MathTherapy(10552)

Question 1097060: 1/3x - 3/2y = 4
2x -by = 20
in this system of equations b is a constant. If the system has no solution, what is the value of b?
Click here to see answer by ikleyn(52786)

Question 1097006: 4y - 3x = 12

Click here to see answer by richwmiller(17219)

Question 1097005: 3x + 5y = 7x +2

Click here to see answer by richwmiller(17219)

Question 1097058: 9x + 2y = 0
7/3y - 2x - 25/6 = 0
the lines represented by the equations above intersect at what point?
Click here to see answer by josgarithmetic(39617)

Question 1097464: I need to solve the 4x4 equation:
w+3x-2y+z=11
2w-3x+3y-4z=-29
5w+x-2y+3z=5
-3w-2x+5y-5z=-20
Click here to see answer by richwmiller(17219)

Question 1097568: Apple sold about 53 million iPods in 2008, but as iPhones became more popular, the sales of iPods began to decrease. The number of iPods sold in 2014 was about 11 million. Write a linear equation in slope-intercept form to model this decrease in sales. Let x stand for the number of years after 2008 and let y stand for the number of iPods sold, in millions.

Click here to see answer by Boreal(15235)

Question 1097711: A farmer bought 100 ha of land, part at $1850 per hectare and part at $2250

paying for the whole $213000. How much land was there in each part?
Do not round intermediate results. Round only final answers. Round to the whole.
Click here to see answer by ikleyn(52786)

Question 1097685: A certain concrete mixture contains 5.00% cement and 7.00% sand .How many kilograms of this mixture and how many kilograms of sand should be combined with 255 kg of cement to make a batch that is 16.0% cement and 18.0% sand? Carry out all calculations exactly and round to three significant digits final answers only.

Click here to see answer by ikleyn(52786)

Question 1097709: How many kilograms of this mixture and how many kilograms of sand should be combined with 255 kg of cement to make a batch that is 16.0% cement and 18.0% sand? Carry out all calculations exactly and round to three significant digits final answers only.A certain concrete mixture contains 5.00% cement and 7.00% sand.

Click here to see answer by ikleyn(52786)

Question 1097674: calculate adult dose of 40 kg child if child dose is 8ml

Click here to see answer by ikleyn(52786)

Question 1097690: Solve the following system of equations by any method.
x/6 +y/2+ z/6 =1/2
x+y+z=5
x/3 +y/2 +z/6= 1
Click here to see answer by greenestamps(13200)

Question 1097690: Solve the following system of equations by any method.
x/6 +y/2+ z/6 =1/2
x+y+z=5
x/3 +y/2 +z/6= 1
Click here to see answer by Jeetbhatt10th(11)

Question 1097816: on the number line
Click here to see answer by richwmiller(17219)

Question 1097851: substitute
3.4x+1.3y=15.2
1.7x-0.3x=11.4

Click here to see answer by greenestamps(13200)

Question 1097851: substitute
3.4x+1.3y=15.2
1.7x-0.3x=11.4

Click here to see answer by MathTherapy(10552)

Question 1097967: What are the ordered pairs of both solutions of the given equation 4x-3y=1
Click here to see answer by Boreal(15235)

Question 1097960: Solve the system using elimination.

2x − y + 3z = −2 [1]
−x + 2y − 3z = 10[2]
y + 5z = −6[3]

The solution to the system of three linear equations is the ordered triple____.

Click here to see answer by Boreal(15235)

Question 1097959: Solve the system using substitution.
3x + 4y − z = 14
x − 5y + 2z = 26
5x + y − 2z = 40

The solution to the system of three linear equations is the ordered triple____.

Click here to see answer by Alan3354(69443)

Question 1097957: Solve the system of linear equations using your method of choice.
2x − y + 3z=13
−6x + 3y + 9z=−39
4x + 2y + 6z=26
The system has...
a. One solution
b. No solution
c. Infinite many solutions

Click here to see answer by Alan3354(69443)

Question 1097949: y = x2 + 6x + 10
y = 2x − 6
The only way to solve this system is by graphing.
A Yes B No
There is only one solution to the system, (−4, 2).
A Yes B No

Click here to see answer by Alan3354(69443)

Question 1098225: Does (0, 0) make the equation y = 76x true?
yes or no

Click here to see answer by math_helper(2461)

Question 1098301: HELPPP!!!! DUE TOMORROW!!:
Given that $-3 \le 7x + 2y \le 3$ and $-4 \le y - x \le 4$, what is the maximum possible value of $x + y$?
Click here to see answer by richwmiller(17219)

Question 1098301: HELPPP!!!! DUE TOMORROW!!:
Given that $-3 \le 7x + 2y \le 3$ and $-4 \le y - x \le 4$, what is the maximum possible value of $x + y$?
Click here to see answer by ikleyn(52786)

Question 1098301: HELPPP!!!! DUE TOMORROW!!:
Given that $-3 \le 7x + 2y \le 3$ and $-4 \le y - x \le 4$, what is the maximum possible value of $x + y$?
Click here to see answer by MathTherapy(10552)

Question 1098510: Use algebraic substitution to solve the following systems of equations
-2x+3y+5z=-21
-4z=20
6x-3y=0
Click here to see answer by Alan3354(69443)

Question 1098734: X+3y=0
2x+5y=3
Click here to see answer by Fombitz(32388)

Question 1098837: The circus is coming. cindy is selling tickets. she sold 8 adults tickets and 5 children's tickets for a total of $177.50 in sales. The second day she received $255.00 for 12 adult tickets and 6 children tickets. What is the price of a child's ticket? What is the price of an adult ticket?
Click here to see answer by Fombitz(32388)

Question 1098840: Please help me solve this equations
The circus is coming. Cindy is selling tickets. she sold 8 adults tickets and 5 children's tickets for a total of $177.50 in sales. The second day she received $255.00 for 12 adult tickets and 6 children tickets. What is the price of a child's ticket? What is the price of an adult ticket?
Write two algebraic equations that model this circus ticket scenario.
Show how you solved the problem by using elimination method, the substitution method, or the graphical method
Click here to see answer by ankor@dixie-net.com(22740)

Question 1098865: The no. Of solution of (x,y,z)to the system of equations x+2y+4z=9, 4yz+2xz+xy=13,xyz=13, such that at least two of x,y,z are integers is...
A)3
B)5
C)6
D)4
Click here to see answer by ikleyn(52786)

Question 1098994: Solve the following system of equations:
y = 3x + 15
2x − 3y = −17

What is the y-coordinate of the solution?
Click here to see answer by Fombitz(32388)

Question 1098994: Solve the following system of equations:
y = 3x + 15
2x − 3y = −17

What is the y-coordinate of the solution?
Click here to see answer by ikleyn(52786)

Question 1099054: 9x+8y-4x-5y
Click here to see answer by josgarithmetic(39617)

Question 1099060: 5x+8x-3
Click here to see answer by Fombitz(32388)

Question 1099058: 2p+1-4pt5
Click here to see answer by Alan3354(69443)

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