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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 436651: 16 dived 2 = X plus 1
Click here to see answer by stanbon(75887)

Question 436698: 2x-3y=6
4x+y=1
the question is solve the system of equations i believe this is where i can do elimination or substitution but im kind of confused
thank you in advance
Click here to see answer by scott8148(6628)

Question 436787: Find the zeros of f(x)=x2+x-12. The zeros of f(x) are and
Click here to see answer by robertb(5830)

Question 436865: I know Im in the wrong section, but can anyone help me fill in the blank?!
Velocity of an object, also known as instantaneous velocity, gives a rate of motion and ____________ of an object.
I thought the answer might be time or speed, but unsure. Thank you for your time and assistance!! =]

Click here to see answer by stanbon(75887)

Question 436916: Solve the system:
x^2+y^2=63
x^2-3y^2=27
Click here to see answer by Alan3354(69443)

Question 436988: What is the y-intercept in the equation y=9x?
Click here to see answer by Alan3354(69443)

Question 437164: 5(3y+6)+4(2-y)
Click here to see answer by oberobic(2304)

Question 437190: AFTER SOLVING A SYSTEM OF LINEAR EQUATIONS, HOW CAN YOU CHECK YOUR ANSWER TO DETERMINE WHETHER IT IS CORRECT? please demonstrate the process by checking an answer for a set of equations (that you have created)
THANK YOU !

Click here to see answer by mananth(16946)

Question 437302: I need to figure out how to find solution pairs so that I can turn them into points so I can graph them.
Here is an example: y=-3x
I tried the method substitute 0 for x and solve for y then substitute 0 for y and solve for x.
I don't understand this though
Click here to see answer by richard1234(7193)

Question 437456: Which system has no solution?
A)y=2x+3, y=3x+2
(B) y=4x+3, y=4x-3
(C) y=1/2x, y=1/20x

(D) y is greater than 3, x is less than 2
Click here to see answer by rwm(914)

Question 437769: How do you work this problem: 8a-3-5a=15
Click here to see answer by laurien(6)

Question 437768: How do you work this problem: 10-5x=1x+18
Click here to see answer by laurien(6)

Question 437873: Solve the system of equations then classify the system.
y=-x-11
3x-2y=-18
Click here to see answer by ewatrrr(24785)

Question 438059: determine if any of the ordered pairs are solutions to the equation given: y= -3x (-5,15) (27,-9)

Click here to see answer by solver91311(24713)

Question 438549: For this problem i just need to know the last equation.

A minor league baseball park has 7000 seats. Box seats cost $6,grandstand seats cost $4, and bleachers seats cost $2. When all seats are sold, the revenue is $26400. If the number of box seats is one-third the number of bleachers seats, how many seats of each type are there?

My 2 equations are

x + y + z = 7000
6x + 4y +2z = 26400

What is the last equation?
Click here to see answer by solver91311(24713)

Question 438564: Finding out an equation from a word problem?
Kate borrows $10000. Some is from her friend at %8 annual interest, twice as much as that from her bank at %9 , and the remained from her insurance company at %5. She pays a total of $830 in interest for the first year.

x + y + z = 10000
.08x + .09y +.05z=830

What is the 3rd equation? Im not sure how to se up the twice as much as from her bank?
Click here to see answer by stanbon(75887)

Question 438586: You are trying to decide whether to install a satellite dish or purchase a DVD player and rent DVD's. The satellite is a one time installation of $45. plus $34./month. To purchase the DVD player it is $185 and rent 8 DVD's per month at $2.50 each. At six months the satellite is a better deal and at 12 months the DVD is a better deal. What is the "Break even point"? or At how many months and at what cost will the two options be equal? Explain your answer.
Click here to see answer by jorel1380(3719)

Question 438991: Solve the linear system by using elimination
x+4y=9
-x-2y=3
Click here to see answer by Alan3354(69443)

Question 438991: Solve the linear system by using elimination
x+4y=9
-x-2y=3
Click here to see answer by rwm(914)

Question 439276: the perimeter of a rectangle is 204 inches. The length exceeds the width by 30 inches. What is the length and width?
Click here to see answer by jorel1380(3719)

Question 439384: Please show me step by step how to figure this 3 variable system question out:
Then maybe I can understand it and do the rest of the questions. THANKS!
2m-4=6
m+2p=4
3p-n=5
Click here to see answer by Alan3354(69443)

Question 439406: f(6) = 3,f(9) = 15
Click here to see answer by stanbon(75887)

Question 439467: Could someone please show me how to solve this? A cellular phone company offers a contract for which the C, in dollars, of the t minutes of telephoning is given by C=0.25(+-300)+42.95. Where it is assumed that t is less than or equal to 300 minutes. What time will keep the costs between $84.95 and $114.45 the telephoning time must be between _ and _ minutes
Click here to see answer by stanbon(75887)

Question 439471: Could someone please show me how to solve this? A cellular phone company offers a contract for which the C, in dollars, of the t minutes of telephoning is given by C=0.25(t-300)+42.95. Where it is assumed that t is less than or equal to 300 minutes. What time will keep the costs between $84.95 and $114.45 the telephoning time must be between _ and _ minutes
Click here to see answer by stanbon(75887)

Question 439430: Solve the inequality and represent your answer in set builder notation.
7z + 3 < 6z � 5
Click here to see answer by nerdybill(7384)

Question 439524: hi my math problem says.
the drama club sells 200 lb of fruit to raise money. the fruit is sold in 5-lb bags and 10-ib bags.
a. write an equation to find the number of each type of bag that the club should sell.
b. graph your equation
c. use your graph to find two different combinations of types of bags.
Thank you sooo much and please show your work!!!
Click here to see answer by stanbon(75887)

Question 439528: My math problem says
Jessica goes to a store to buy $70 worth of flour and sugar for her bakery. A bag of flour costs $5, and a bag of sugar costs $7.
a. Write an equation to find the number of bags of each type Jessica can buy.
b. Graph your equation.
Thank you so much. Can you please show your work thank you!
Click here to see answer by rwm(914)

Question 439525: My math problem says
The student council is sponsoring a carnival to raise money. Tickets cost $5 for adults and $3 for students.The student council wants to raise $450.
a. write an equation to find the number of each type of ticket they should sell.
b. graph your equation
c. use your graph to find two different combinations of tickets sold.
thank you so much and please show your work.
Click here to see answer by rwm(914)

Question 439507: in a parallelogram one angle is 4/5th of the adjacent angle. Determine the angles of the parallelogram
Click here to see answer by rwm(914)

Question 439696: How do you set up the following equation:
6z-5=z+5. I've tried
6z-5=z+5
5 5
6 -6
_______________
-5
However that is not correct. Then I tried:
6z-5=z+5
6z-5+5-z
6z-10-z
5
__________
2
but I can't figure out what to do with the 6z and z.
Thank you.
Click here to see answer by solver91311(24713)

Question 439843: if you algebraically solve a system of two equations and get 6=10, how many solutions do they have?
Click here to see answer by Gogonati(855)

Question 440021: What is the value of x in the solution to the system if equations.
x + 2y + 4z = 12
y + 2z = 8
5y = 10
Click here to see answer by josmiceli(19441)

Question 440105: Malome is presently half his brother's age. Five years ago his age and his brother's age added up to 26. What is Malome's present age.?
Click here to see answer by stanbon(75887)

Question 440317: i need help solving a chapter problem.
its a word problem that many students have trouble with.
So far i have gotten most of it until it said to find a number to make to solution exist.
this is what i have.
x+y=45
11x+10y= ?
i have tried 100, 80, & 81 but none of them worked , it was all no solution.
i know how to graph the problems & solve them alebraically . Its just finding a number to make it a solution is what i am having trouble with .
please help D:
if you need more info about the problem please email me.

Click here to see answer by rwm(914)

Question 440320: i sent the wrong email by accident
my problem was
x+y=45
11x+10y= ?
i've already tried 100, 80, & 81. all of them were no solution.
i already know how to graph it & solving it algebraically .
i just need help finding a number to make it a solution.
Click here to see answer by MathLover1(20850)

Question 440918: Please help me solve this question
Which of the following will be part of the solution to the system
x >= y+1
y >= -x+2
A.(4,2)
B.(2,4)
C.(0,2)
D.(-3,1)
The answer I came up with was A but was told it was C
Click here to see answer by scott8148(6628)

Question 440885: Solve by elimination
5x + 5y = -7
7x - 2y = 19
If all work could be shown (even the simplest) it would be very appreciated.
I am having trouble figuring out how to simplify 80/10 down to 16/5.
Thank you!
Click here to see answer by jorel1380(3719)

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