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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 66433: Please help me solve this equation. 13x-5y=8
3x+5y=8
Click here to see answer by ankor@dixie-net.com(22740)

Question 66612: What is a real-life situation that follows a linear equation,with the independent ariables being years. What would the slope say about the future years.
Click here to see answer by funmath(2933)

Question 66638: Find the slope of the line passing through the points (2, 2) and (4, 2).
a)0
b)1
c)2
d)Undefined
When working this problem I came up with b)as the answer for this question. Is this correct? If not could you help me with this? Thanks
Click here to see answer by funmath(2933)

Question 66745: Given the following system of equations, which statement is true?
y=1/4x+2
x=8y-12
Answer Choices:
A) y=8y-12+2
B) y=2y-1
C) x=1/4x+2
D) y=8y-12
Click here to see answer by rapaljer(4671)

Question 66675: 3y = 4x =0

Click here to see answer by rapaljer(4671)

Question 66833: Can you show me differenet ways of converting metric units into other metric units or web site thank you
Click here to see answer by stanbon(75887)

Question 66881: Solve linear equation and find the value of X.
22. 12 + X 5X-7
________ = _______ + 2
-4 3

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

Question 66916: 5(2x-7)+3(4x-7)-(x+2)=-142
I need help on how to solve this problem??
Click here to see answer by Edwin McCravy(20056)

Question 67070: A student walks and jogs to college each day. The student averages 5 km/h walking and 9 km/h jogging. The distance from home to college is 8 km, and the student makes the trip in 1 hour. How far does the student jog?
THANK YOU!!!
Click here to see answer by ankor@dixie-net.com(22740)

Question 67113: I would just like to double check something I done. The value of k for which x=4 is a solution to te equation 3x+k=23 the answer i got was 11
Click here to see answer by chitra(359)

Question 67112: How would I find the solutions to the equation x^2+2x+5=0
Click here to see answer by chitra(359)

Question 67071: Against a head wind, Jeff computes his flight time for a trip of 2900 miles at 5 hours. The flight would take 4 hours and 50 minutes if the head wind were half as much. Find the head wind and the plane's air speed.
THANK YOU!!!
Click here to see answer by ankor@dixie-net.com(22740)

Question 67184: EXPRESS 3+i/1+2i in the form a+bi where a and b are real numbers.

Click here to see answer by Edwin McCravy(20056)

Question 67182: In 1927 Charles Lindbergh flew the Spirit of St. Louis from New York to Paris at an average speed of 107.4 mi/h. Eleven years later, Howard Hughes flew the same route, averaged 217.1 mi/h, and took 16 hours, 57 minutes less time. Find the length of their route.
THANK YOU!!!
Click here to see answer by josmiceli(19441)

Question 67178: FIND THE SOLUTIONS TO THE EQUATION [2X-14]=6 THE ANSWER I GOT WAS X=4,10 IS THIS CORRECT.
Click here to see answer by Zoop(21)

Question 67189: Ok, my algebra teacher gave us this worksheet today and he explained it, and I know what I'm trying to do, but the answer I'm getting dosen't match the equations. We have to write out our own word problem and solve for what we indicated in the problem, like this one, "A theatre sold 200 tickets to a play. The adult tickets cost $3.00 and the student tickets cost $2.50, the number of adult tickets sold was 6 more than 2 times the number of student tickets sold. How many adult tickets were sold?" I f yall can help me I'd really appreciate it. Thank Yall!
Click here to see answer by ankor@dixie-net.com(22740)

Question 67179: It took 3 hours to row a boat 18 km against the current, The return trip with the current took 1 1/2 hours. Find the speed of the rowboat in still water.
THANK YOU!
Click here to see answer by ankor@dixie-net.com(22740)

Question 67396: Solve the systems by graphing the following equations:
2x - y = 4
2x - y = 6
I am having trouble with these problems, could someone please help me with this. Thanks
Click here to see answer by stanbon(75887)

Question 67398: Graph the following systems:
3x - 6y = 9
x - 2y = 3
I am trying to figure out what I am doing wrong. Can someone get me on the right track. Thanks.
Click here to see answer by stanbon(75887)

Question 67397: Graph the following equations:
x - 2y = 8
3x - 2y = 12
I am having difficulty with these problems, I am not sure what I am doing wrong but I end up with a fraction as the answer. I think I have confussed myself to the point I cannot get back on track now. Any help would be greatful. Thanks
Click here to see answer by stanbon(75887)

Question 67399: Find the values for m and b in the following system so that the solution to the system is (-3, 4).
5x + 7y = b
mx + y = 22
Ok, I need some help here. This one has me confussed and frustrated at the same time. Thanks I appreciate any help you could give me.

Click here to see answer by Earlsdon(6294)

Question 67457: A sprinter runs the 100-meter dash, with the wind behind him, in 9.96 seconds. He then runs the same distance in the other direction in 11.79 seconds. About how fast is the wind blowing? About how fast does the sprinter run when there is no wind?
Click here to see answer by ankor@dixie-net.com(22740)

Question 67481: Solve each of the systems by addition. If a unique solution does not exist, state whether the system is inconsistent or dependent.
x + 5y = 10
-2x - 10y = -20
Thanks for any help you can provide.

Click here to see answer by stanbon(75887)

Question 67619: Solve each of the system by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.
10x + 2y = 7
y = -5x + 3
Any help is appreciated. Thanks

Click here to see answer by checkley71(8403)

Question 67614: Solve the system by system:
8x - 4y = 16
y = 2y - 4
This substitutions have gotten me confused, any help would be appreciated. Thanks
Click here to see answer by checkley71(8403)

Question 67732: Hello,
I have recently started learning about the systems of linear equations. I understand how to solve by graphing, substitution, and elimination but I have a question about a math problem.
I need to solve this system of linear equations algebraically using elimination:
3x-2y=9
-6x+4y=1
PLEASE HELP ME WITH THIS PROBLEM AS SOON AS POSSIBLE.I always work really hard in school but am confused on how to solve this problem and figure out what special system it is. PLEASE HELP ME!
Confused Algebra 1 student
Click here to see answer by Earlsdon(6294)

Question 67729: im having problems with this equation 7t/2-3=3t-2/3 i alot of different ways but for some reason when i check my answer i never get the same thing on both sides?
Click here to see answer by ptaylor(2198)

Question 67740: Solve the system by substitution:
4x - 12y = 5
-x + 3y = -1
Thanks for any help you can give me.

Click here to see answer by ptaylor(2198)

Question 67784: please help to solve
x + 3y = 7
xy = 2
Click here to see answer by adamchapman(301)

Question 67784: please help to solve
x + 3y = 7
xy = 2
Click here to see answer by ankor@dixie-net.com(22740)

Question 68056: The sum of $127 was didvided among 3 people so that the second received $5 less than twice as much as the first, and the third received $2 more than the second. How much did each person receive?
Click here to see answer by stanbon(75887)

Question 68082: Determine which two equations represent parallel lines.
a)y = 3x - 5
b)y = -3x + 5
c)y = 3x + 3
d)y = -1/3x -5
Any help would be greatful.
Click here to see answer by checkley71(8403)

Question 68085: Find the slope of any line perpendicular to the line through points(3, 2) and (5, 6).
a)4
b)-4
c)1/4
d)-1/4
Any help would be great, thanks.
Click here to see answer by checkley71(8403)

Question 68108: 5x-2y=4
3x+y=9
Click here to see answer by Edwin McCravy(20056)

Question 68019: If the lines passing through the points (1,a) and (4,-2) is parallel to the line passing through the points (2,8) and (-7,a+4), what is the value of a?
Click here to see answer by ankor@dixie-net.com(22740)

Question 68063: I need to solve the equation for x
z=4X+3Y
Click here to see answer by funmath(2933)

Question 68141: how do you graph a solution that says:
y=-3/2-3
Click here to see answer by checkley71(8403)

Question 68023: how to find 5(2x-6)+2=2x+x
Click here to see answer by checkley71(8403)

Question 68023: how to find 5(2x-6)+2=2x+x
Click here to see answer by whatsmath?(5)

Question 68286: Solve the system by graphing.
x+2y=4
x+2y=-2

Click here to see answer by funmath(2933)

Question 68349: Mr.Thompson invests a principal of $8000; part at 8% per annum and the rest at 10% per annum. After one year, the total interest was $724. How much did Mr. Thompson invest at each rate?
Click here to see answer by checkley71(8403)

Question 68346: Would somebody please help me solve this equation: -3(3x + 15)-(10 + x)=35
Thank You, Patrick
Click here to see answer by checkley71(8403)

Question 68370: please help to solve :
x^2 + y^2 = 25
2x - y = 5
Click here to see answer by rmromero(383)

Question 68388: A 30kg mixture contains pretzels and cheezies. Pretzels are priced at $2.00/kg and cheezies are priced at $5.00/kg. If the mixture is priced at $4.00/kg, how many kgs of each does it contain?
Click here to see answer by checkley71(8403)

Question 68411: $10,000 in two mutual funds, one rose 6% in one year and one rose 9% in one year. It rose a total of $684 in one year. How much was invested in each mutual fund?
Click here to see answer by rmromero(383)

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