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

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Question 999539: It says to solve each system by substitution and elimination but I don't understand on how to do it.
Y=-3x+4
Y=3x-2
Click here to see answer by mananth(16946)

Question 999539: It says to solve each system by substitution and elimination but I don't understand on how to do it.
Y=-3x+4
Y=3x-2
Click here to see answer by MathTherapy(10552)

Question 999545: solve each system of equations by substitution method
3x+6y=9
4x+8y=16
Click here to see answer by ikleyn(52785)

Question 999542: solve each equations by the substitution method
3x+y=-14
4x+3y=-22
Click here to see answer by ikleyn(52785)

Question 999517: solve each system of equations by the substitution method
3y-x=6
4x+12y=0
Click here to see answer by MathTherapy(10552)

Question 999516: solve each system of equations by the substitution method
y=5x-3
y=8x+4
Click here to see answer by Fombitz(32388)

Question 999733: How do you solve this math problem 15x + 5y = 20

Click here to see answer by addingup(3677)

Question 999733: How do you solve this math problem 15x + 5y = 20

Click here to see answer by Alan3354(69443)

Question 999731: Write an equation for a linear function f that has the given values: f(-5) = 9 and f(11) = -39.

Click here to see answer by josgarithmetic(39617)

Question 999863: if your trying to go 552 miles using the equation f(x)=55x+0 i dont understand how this works for hours
Click here to see answer by Edwin McCravy(20056)

Question 999911: The Outdoor Shop buy tents for $264 less 25% for buying more than 20 tents. The store operates on a markup of 33 1/3% of the sale price and advertises that all merchandise sold at a discount of 20% of the regular selling price. What is the regular selling price of the tents?
Do not understand how to break this down.
Click here to see answer by stanbon(75887)

Question 999990: Find the length of one side of the sguare area=196in2

Click here to see answer by macston(5194)

Question 1000044: Find unknown x value in the following equation:
1/2:2x=-1/3
P/S: No explanation from teacher.
Click here to see answer by josgarithmetic(39617)

Question 1000656: 2x+12y=0
3x+17y=2

Click here to see answer by Alan3354(69443)

Question 1000727: Write a linear system. Let x be the number of adult tickets sold and let y be the number of student tickets sold.
Click here to see answer by fractalier(6550)

Question 1000956: 1. Given f(x)=2x+5 and g(x)=8x+2
then what is (f+g)(−9)) ?
2. Given f(x)=10x+8 and g(x)=1x+4
then what is f(g(3)) ?
3. Given f(x)=5x+5 and g(x)=6x+1
then what is (f−g)(−8)) ?

Click here to see answer by Boreal(15235)

Question 1001004: How do you write y=-3/2x+14 in standard form
Click here to see answer by Boreal(15235)

Question 1001102: James has some $5 bills and some $20 bills. He has a total of 28 bills, and their total value is $350. Label the steps of the problem-solving process, and determine how many $5 bills James has.

Click here to see answer by addingup(3677)

Question 1001166: Simultaneous equation help! The answer at the back is (2,1) to this question:
2x-3y=7
3x+y=7
??
Click here to see answer by Cromlix(4381)

Question 1001288: What is
X - 3y = -3
-2x + 7y = 10

Click here to see answer by Alan3354(69443)

Question 1001298: What is the problem 7-x(4-x)+14x in simplest form?
Click here to see answer by addingup(3677)

Question 1001298: What is the problem 7-x(4-x)+14x in simplest form?
Click here to see answer by MathTherapy(10552)

Question 1001300: Find the solution set of 2x+5y=4 and 2x+5y=8 using elimination,substitution, and graphical method.
Click here to see answer by addingup(3677)

Question 1001571: Circle the equation whose line has the steepest slope. y=-2x-5 , y=2x , y=1/3x , y=-9/2x , y= -3+4x
Click here to see answer by fractalier(6550)

Question 1001592: Solve using elimination method or any method
9x+8y=7
3/2x+8y=7/6
Click here to see answer by Alan3354(69443)

Question 1001650: What does the x stand for in the equation 7/6-x/3=1/6
Click here to see answer by rfer(16322)

Question 1001650: What does the x stand for in the equation 7/6-x/3=1/6
Click here to see answer by macston(5194)

Question 1001677: Please help me with this problem and show all work. The tutor that did the problem confused me even more.
A movie theater has a seating capacity of 333. The theater charges $5.00 for children, $7.00 for students, and $12.00 of adults. There are half as many adults as there are children. If the total ticket sales was $ 2422, How many children, students, and adults attended?

Click here to see answer by macston(5194)

Question 1001676: Please help me I never understood how to do graphs. Thanks
Graph: {y<2x+1
y>−1/4x+2

Click here to see answer by MathLover1(20850)

Question 1001675: Please help and show all steps and work.Thanks
A chemist has three different acid solutions. The first acid solution contains 20% acid, the second contains 30% and the third contains 75%. He wants to use all three solutions to obtain a mixture of 64 liters containing 50% acid, using 2 times as much of the 75% solution as the 30% solution. How many liters of each solution should be used?

My answers I came up with is 34,65,29.2
Click here to see answer by josgarithmetic(39617)

Question 1001636: what is x in the question solve for x in the problem 3/7(42 x+28)=-5/8(16 x+48)+4
Click here to see answer by Cromlix(4381)

Question 1001653: What happens to the graph from y= -2x-5 to y= -3x-6?
Click here to see answer by Fombitz(32388)

Question 1001775: Tony misplaced 7 stamps from his collection. He knows that each stamp of his is worth $0.15 and that the total value of them is now only $5.55.
Write an equation to determine the number of stamps (s)(s)left parenthesis, s, right parenthesis that Tony originally had.
Click here to see answer by fractalier(6550)

Question 1002012: Determine whether (-2,3)is a solution of the equation x+3y=11
Click here to see answer by jim_thompson5910(35256)

Question 1002012: Determine whether (-2,3)is a solution of the equation x+3y=11
Click here to see answer by harpazo(655)

Question 1002085: The sum of five consecutive integers is 0. Find the integers.
Click here to see answer by ikleyn(52785)

Question 1002035: An amount of money was divided between some people in such a way that if there had been 4 more people,everyone would have got Tk.16 less. But if there had been 4 less people, everyone would have got Tk.24 more. How many people were in group.
Click here to see answer by ankor@dixie-net.com(22740)

Question 1002185: Show that the X solutions of the simultaneous equations
Y = X - 2
xy = 3
Are solutions of the equation
X(squared) - 2x - 3 = 0
Click here to see answer by jim_thompson5910(35256)

Question 1001917: Maximize P=3x+y+3z
Subject to 2x+y+z≦2
x+2y+3z≦5
2x+2y+z≦6
x,y,z≧0
Use simplex method
Click here to see answer by Edwin McCravy(20056)

Question 1002405: Is 3/x + 6y = 2 linear?
Click here to see answer by MathLover1(20850)

Question 1002460: Solve the equation by completing the square. The equation has real number solutions. 3x^2+5x=2
Click here to see answer by josgarithmetic(39617)

Question 1002496: I need to show the solution for 4x^2-16<0 on a number line and using interval notation. Thanks
Click here to see answer by MathLover1(20850)

Question 1002534: Use the method of substitution to solve the system of linear equations. 3a=7-b and 3a= 5-b. There is one solution. What is the solution?
Click here to see answer by stanbon(75887)

Question 1002536: Solve the system of equations by the substitution method. {y=2x+1 and 4y-6x=10. What is the solution and what is the ordered pair?
Click here to see answer by josgarithmetic(39617)

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