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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 1033576: Solve by addition method
3x+ y=1 and 5x + y=2
Click here to see answer by josgarithmetic(39617)

Question 1033575: Solve by substitution
Y=x-3 and x +y=5
Click here to see answer by ikleyn(52786)

Question 1033591:
Click here to see answer by Alan3354(69443)

Question 1033680: Can someone please help me make a systems of equations using this problem:
Your local cable television company offers two plans: basic service with one movie channel for $35 per month, or basic service with two movie channels for $45 per month. What is the charge for the basic service and the charge for each movie channel?
Click here to see answer by FrankM(1040)

Question 1033682: Write a system of equations to model each situation. Then use your system to solve.

1) A writing workshop enrolls novelists and poets in a ration of 5 to 3. There are 24 people at the workshop. How many novelists are there? How many poets?
2) You have 15 coins in your pocket that are either quarters or nickels. They total $2.75. How many of each coin do you have?
Click here to see answer by stanbon(75887)

Question 1033696: I need help in knowing how many solutions does this system have, exactly one, many solutions, or no solutions.
x+3y=0
12y=-4x
Click here to see answer by stanbon(75887)

Question 1033954: X+y=1
X-2y=4
Click here to see answer by josmiceli(19441)

Question 1034034: How do i solve systems of equations? Im confused about it.
Click here to see answer by fractalier(6550)

Question 1034044: Im not sure how to do this I keep getting a decimal but It shows to be a fraction?
0.15x+0.9(x-1)=0.01(3x-4)
x=?
Click here to see answer by fractalier(6550)

Question 1034140: 125a ^ 3 + 27b ^ 3
Click here to see answer by fractalier(6550)

Question 1034173: Write a word problem that can be solved using a system of two linear equations. Solve the problem and give the meaning of the answer.
Click here to see answer by fractalier(6550)

Question 1034308: V=4/3 pi r^3
Could I have the steps for solving for r^3? I need to get r^3 alone.
Click here to see answer by stanbon(75887)

Question 1034315: V=4/3*pi*r^3
Could I have the steps for solving for r^3? I need to get r^3 alone. And sorry, but I am a returning student, my algebra is all but forgotten, and really need the answer spelled out step-by-step.

Click here to see answer by stanbon(75887)

Question 1034323: 0.12x+0.7(x-2)=0.01(3x-4)
Trying to solve this in fraction form stuck at what to do? I know i need to get rid of the decimals..
Click here to see answer by fractalier(6550)

Question 1034496: Find the measurements for the angle � in radians, where the ratio r=3/5 yds, and the length of the arc is s=15 yds. Help??
Click here to see answer by Alan3354(69443)

Question 1034657: using substituting method, solve 3x+3y=10 and 2x-y=2
Click here to see answer by addingup(3677)

Question 1034691: Could you please tell me if I'm on the right track with this equation? This is how I solved it but I'm not sure. Thank you
3x+y-4=0
x=-1/3y+7/3
3(-1/3y+7/3)+y-4=0
-1y+7+1y-4=0
3=0
No solution
Click here to see answer by fractalier(6550)

Question 1034870: In simultaneous equation, uing substitutional method, solve 3x+3y=10 and 2x-y=2
Click here to see answer by ankor@dixie-net.com(22740)

Question 1034870: In simultaneous equation, uing substitutional method, solve 3x+3y=10 and 2x-y=2
Click here to see answer by ikleyn(52786)

Question 1034943: Which situation could best be represented by this linear equation?
24x + 38y = 520
A. If x represents the number of bracelets and y represents the number of rings, there were 24 more bracelets sold than rings. The total sales were $520.

b. If x represents the number of bracelets and y represents the number of rings, there were 38 more bracelets sold than rings. The total sales were $520.

c. If x represents the number of bracelets sold at $24 each and y represents the number of rings sold at $38 each, the total sales were $520.

d. If x represents the number of bracelets and y represents the number of rings, there were 520 bracelets and rings sold. Bracelets were $24, and rings were $38.
Click here to see answer by ikleyn(52786)

Question 1035052: Solve Using Substitution
2x+4=4
(x+1)^2 + (y-2)^2 = 4

Click here to see answer by josgarithmetic(39617)

Question 1035128: A wire 26 cm long is cut into two pieces, one of length x and the other of length 26 − x. Each piece is bent into the shape of a square.
(a) Find a function that models the total area A enclosed by the two squares in terms of x.
(b) Find the value of x that minimizes the total area of the two squares.
Click here to see answer by fractalier(6550)

Question 1035244: Solve the following equation for x and y:
(2)^2+x +(3)^3+y=275
(2)^3+x +(3)^2+y=145
Click here to see answer by ikleyn(52786)

Question 1035366: Show that the following system is consistent if and only if c=2a-3b and solve the system in this case
2x-y+3z=a
3x+y-5z=b
-5x-5y+21z=c

Click here to see answer by Edwin McCravy(20056)

Question 1035425: Can someone please solve this problem using system of linear equations?
Mr. White ordered pizza for the party. Medium pizzas have 8 slices and large pizzas have 10. If there are 13 pizzas and 108 slices, how many medium pizzas are there?
Any help would be appreciated.
Click here to see answer by jorel555(1290)

Question 1035490: Two numbers p and q have a sum of 27 Two numbers p and q have a sum of 27. Find the numbers
Click here to see answer by Cromlix(4381)

Question 1035486: What are the solutions of the system shown below?
Copy link below to see please!!
Link : http://prntscr.com/b72isw
Click here to see answer by Alan3354(69443)

Question 1035485: What are the solutions of the system
I am going to screenshot the system, it is hard to type it on here.
Copy and paste the link below to see please, thank you!!
Link ; http://prntscr.com/b72fa6
Thank you :)
Click here to see answer by ikleyn(52786)

Question 1035611: The point (3,-4) is on the terminal side of 0 in standard position. Which is the sine of 0?
A). -3/5?
B). 3/5?
C). -4/5?
D). 4/5?
thank you :)
Click here to see answer by fractalier(6550)

Question 1035618: please copy and paste the link below to see the question, it is hard to type it on here!!
Thank you :)
Link :
http://prntscr.com/b7i6jr
Click here to see answer by fractalier(6550)

Question 1035661: evaluate expression.write results in decimal form: (4 x 10^2) / (2 x 10^3)
Click here to see answer by Alan3354(69443)

Question 1035759: One angle measures 54 more degrees than 3 times another angle. The angles are supplementary. What are their measures?
Click here to see answer by fractalier(6550)

Question 1035906: Find the value of x�-8y�-36xy-216 when x=2y+6
Click here to see answer by robertb(5830)

Question 1035963: What is true about the graph of the line y = -3x + 4?
Click here to see answer by ikleyn(52786)

Question 1036012: A model rocket is launched from the roof of a building. It's flight path is b modeled by h=5t^2+40t+100 where h is the height of the rocket above the ground in meters and t is the time after the launch in seconds. At what time did the rocket reach its maximum height?
Click here to see answer by Boreal(15235)

Question 1036130: Does(1, 3)makethe in equality2x + 5y > 17true?
yes
or
no

Click here to see answer by rfer(16322)

Question 1036156: the sum of the digits of a two-digit number is 17. When the digits are reversed, the new number is 9 more than the original number. What is the original number?
Click here to see answer by josgarithmetic(39617)

Question 1036179: The problem is f (x)=3x+2 find f (5) and give the ordered pair. I'm doing this on the computer and the box says under it "follow this format: (2,2) I thought it would be (0,10) but it says I'm wrong help please??
Click here to see answer by Theo(13342)

Question 1036309: The problem in the book says. A portion of $100,000 (x) was invested with a return of 3 percent after one year. The remainder if the investment (y) was invested with a return of 1 percent. The total return on the investment was $1800. It wants to know how much money was invested at a 3 percent rate of return... I don't understand how to figure it out
Click here to see answer by stanbon(75887)

Question 1036335: Question is: Find the the gradient of a line 3x + 2y-3=0
Click here to see answer by Edwin McCravy(20056)

Question 1036399: Write the equation of the line which has a slope of eight ninths
8
9 and passes through (9,2). Write the answer in slope-intercept form.
Click here to see answer by macston(5194)

Question 1036648: Write the point-slope form of an equation for a line that passes through the point with the given slope.

(-6, -2), m = -2
Select one:
a. y + 2 = -2(x + 6)
b. y - 2 = -2(x + 6)
c. y + 2 = 2(x + 6)
d. y + 2 = -2(x - 6)
Click here to see answer by Boreal(15235)

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