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Question 136195: SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD

PROBLEM: x+3y= 6
-4x-9y= 3
CAN YOU SHOW ME THE CORRECT STEPS TO SOLVE THIS PROBLEM... I KNOW THE FORMULA HAS TO BE 1 0..
0 1..
AND I ALSO KNOW HOW TO FIRST SET IT UP...
1 3..6
-4 -9..3 THANK YOU FOR TAKING TIME OUT OF YOUR DAY TO HELP ME :)
Click here to see answer by stanbon(57984)

Question 136182: SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD
PROBLEM: x-3y= 3
2x-5y= 4
I NEED STEP BY STEP HELP ON HOW TO SOLVE THIS PROBLEM... SO FAR I KNOW THAT MY ANSWER HAS TO LOOK LIKE THIS ( IN MATRIX FOR OF COURSE )
1 0...
0 1...
AND I ALSO KNOW HOW TO SET IT UP AT FIRST BUT THEN IT BECOMES VERY TRICKY
[ 1 -3.. 3 ]
[ 2 -5.. 4 ] THANK YOU SO MUCH FOR YOUR TIME :)
Click here to see answer by stanbon(57984)

Question 136221: SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD
PROBLEM: x-2y= -1
2x+y= -7
PLEASE HELP SOLVE.. I UNDERSTAND THE FORMULA COMPLETLY AND HOW IT SHOULD COME OUT TO LOOK LIKE [ 1 0.. AND BENEATH THAT 0 1..] YET JUST THE PROCESS OF SOLVING IT LOSES ME.. I DO UNDERSTAND HOW TO SET IT UP THOUGH
[ 1 -2..-1]
[2 1..-7] THANK YOU FOR YOUR TIME... lj23kfuller@yahoo.com
Click here to see answer by dolly(163)

Question 136242: Hi could you help me solve this rational equation?
y-3/5 = y+1/7
thanks
Click here to see answer by solver91311(17077)

Question 136220: SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD
PROBLEM: 2x-y= 0
x+y= 3
I'M STILL VERY CONFUSED BY THE SOLVING PROCESS.. I DO UNDERSTAND THE BASIC FORMULA [ 1 0.. AND BENEATH THAT IS 0 1..] AND I DO UNDERSTAND HOW TO FIRST SET IT UP... [ 2 -1..0]
[ 1 1..3]
YET FROM HERE I JUST GET FRUSTRATED AND IT SEEMS LIKE NO MATTER HOW MANY TIMES I TRY, I GET NOWHERE.. PLEASE HELP.. THANK YOU SO MUCH, lj23kfuller@yahoo.com
Click here to see answer by solver91311(17077)

Question 136244: Hi could you help me solve this rational equation?
Solve each eqaution. Check each solution.
x/2=2x-3
thanks!
Click here to see answer by MathLover1(6815)

Question 136219: SOLVE THE SYSTEM USING THE GAUSS-JORDAN METHOD
PROBLEM: x-y= 4
2x+y= 5
MY PROBLEM AGAIN IS JUST GOING THROUGH AND UNDERSTANDING THE CORRECT WAY ON SOLVING THIS PROBLEM... I UNDERSTAND THE FORMULA FINE [ 1 O.. AND BENEATH THAT IS 0 1..] IS GET THAT AND I ALSO KNOW HOW TO SET IT UP SUCH AS
[ 1 -1...4]
[ 2 1...5] BUT FROM HILL IT IS STILL CONFUSING... PLEASE HELP AND THANK YOU ljkfuller@yahoo.com
Click here to see answer by MathLover1(6815)

Question 136258: + =
Click here to see answer by ankor@dixie-net.com(15747)

Question 136410: Please help me solve the equation for g.
p=squarerootkl/g
Click here to see answer by stanbon(57984)

Question 136409: Please help me solve this equation:
15/x=2x-1
Click here to see answer by wvgirl64(4)

Question 136408: Please help me solve this problem:
Use the discriminant to predict how many and what type of solutions there are to the equation. x^2+5x+2=0
Click here to see answer by solver91311(17077)

Question 136582: Hi could you help me solve this rational equation?
x/3 + x/2 = 10

thanks
Click here to see answer by vleith(2825)

Question 136589: hi could you help me solve this rational equation?
(2x-4)/(x-5)=0
Thanks a lot
Click here to see answer by josmiceli(9819)

Question 136612: solve the equation for y
2y^2+y+8=(y-2)^2
Click here to see answer by solver91311(17077)

Question 136590: Hey i need help solving this rational equation
-x/4 = 2x/3
thanks
Click here to see answer by scott8148(6628)

Question 136585: hey i need help solving this rational equation.
Here it is:
1/x - 1/6 = 4/3x^2
Thank you!!
Click here to see answer by ankor@dixie-net.com(15747)

Question 136656: Please help me solve this equation:
15/x=2x-1
Click here to see answer by vleith(2825)

Question 136799: BETSY HAS A JAR CONTAINING 80 COINS, ALL OF WHICH ARE EITHER QUARTERS OR NICKLES. THE TOTAL VALUE OF THE COINS IS $ 14.60. HOW MANY OF EACH TYPE OF COIN DOES SHE HAVE?
CAN YOU PLEASE SHOW ME A SIMPLE FORMAT TO FOLLOW TO SOLVE MY PROBLEM AND HOW TO COME OUT WITH THE CORRECT ANSWER?

THANK,
lj23kfuller@yahoo.com
Click here to see answer by jojo14344(1512)

Question 136803: Hi could you help me solve this rational equation?
Solve each equation. Check each solution.
-x/4=2x/3
Thank you
Click here to see answer by solver91311(17077)

Question 136843: IF g(x)= 2x^2-2x-4, find the following...
PROBLEM: g(x-2)
how do solve this i understand that i plug (x-2) into all of the x places, yet i do not understand how to go from there?
this is as far as i can get..
2(x-2)^2-2(x-2)-4
DOES THE x-2 THAT IS SQUARED LOOK LIKE (x-2)(x-2) OR SHOULD I DO SOMETHING DIFFERENT? PLEASE HELP
Click here to see answer by vleith(2825)

Question 136864: PROBLEM:
DAVE IS FLYING FROM PHILADELPHIA TO CHICAGO. ON THE FLIGHT, FLYING AGAINST THE WIND, THE 780 MILE TRIP TAKES 2 HOURS. THE RETURN TRIP, WITH THE WIND TAKES 1.5 HOURS. FIND THE SPEED OF THE WIND AND FIND THE SPEED OF THE PLANE IN STILL AIR.
PLEASE HELP I DONT EVEN KNOW WHERE TO BEGIN THANKS!!
Click here to see answer by checkley77(12569)

Question 136861: PROBLEM:
DAVE IS FLYING FROM PHILADELPHIA TO CHICAGO. ON THE FLIGHT, FLYING AGAINST THE WIND, THE 780 MILE TRIP TAKES 2 HOURS. THE RETURN TRIP, WITH THE WIND TAKES 1.5 HOURS. FIND THE SPEED OF THE WIND AND FIND THE SPEED OF THE PLANE IN STILL AIR.
PLEASE HELP I DONT EVEN KNOW WHERE TO BEGIN THANKS!!
Click here to see answer by checkley77(12569)

Question 136832: A triangular sail has two sides the same length. The thir side is 9 feet shorter than either of the equal sides. The perimeter of the sail is 63 feet. how long is the shortest side?
I don't know how to set this problem up
I can get the answers - 24, 24 and 15
but how do i set it up in an equation.
Click here to see answer by scott8148(6628)

Question 136947: solve by substitution method. A.) y=-X+6 B.) y=-2x+7
Y=-x-3 -2x+y=-3

C.) y=x-5 D.) 2x+3y=-1
4x+y=15 3x-3y=-4

I solved C. I think so: X=4 Y=-1 the others I tried but can't get anywhere.
This is a homework test-not in book, instructor gave these on a sheet
Click here to see answer by vleith(2825)

Question 136988: 4z+12=7z-9
Click here to see answer by checkley77(12569)

Question 136980: PLEASE !!!!!!!!!!!HELP !!!!!!!!!!!!!!!1
If a+b+c+d=45 and a+2=b-2=2c=d/2
FIND the values of a b c d PLEASEEEEEEEEEEEEEEEEE !!!!!!!!!! GOD BLESS YOU !!!!!!!
Click here to see answer by ptaylor(2052)

Question 137054: Factor the expression completely.
9a^4 + 11a^3b + 2a^2b^2
Click here to see answer by stanbon(57984)

Question 137118: (4x+6)to the 2nd power=25
Click here to see answer by oscargut(900)

Question 137125: solve the equation
x+7/3 = 37/15 - x-2/5
Click here to see answer by MORUPHOSUOLALE(24)

Question 137130: Solve the equation by the method of your choice.
(4x+6)squared = 25
Click here to see answer by MORUPHOSUOLALE(24)

Question 137139: Determine whether the equation is an identity, a conditional equation or an inconsistent equation.

-7x+2/3 + 4/3 = -7x/2
Click here to see answer by stanbon(57984)

Question 137123: solve the equation
x+7 divided by 3 = 37 divided by 15 - x-2 divided by 5

or

x+7/3 = 37/15 - x-2/5
Click here to see answer by stanbon(57984)

Question 137135: Determine whether the equation is an identity, a conditional equation or an inconsistent equation.
-4(x+6)+6=2x-6(x+7)
Click here to see answer by Fombitz(13828)

Question 137132: Solve the eqaution by the squared root property.
(4x+4) squared = 64
Click here to see answer by checkley77(12569)

Question 137129: Solve the equation using the quadratic formula
x squared - 10x + 34 =0
Click here to see answer by checkley77(12569)

Question 137121: solve the equations by factoring.
20x to the 2nd power + 33x + 10 = 0
Click here to see answer by checkley77(12569)

Question 137137: Determine whether the equation is an identity, a conditional equation, or inconsistent equation.
2x-3+9x-4=3x+8x-10
Click here to see answer by vleith(2825)

Question 137554: subtract:
6/x^2 - 8/x
Click here to see answer by oscargut(900)

Question 137637: How do you solve 1/x=5/4
Click here to see answer by scott8148(6628)

Question 137659: I came across a problem in my sisters college math book and being a math major i cant figure it out and really just want to know how for my own personal knowldege!

solve for y:
xy-5=y
Click here to see answer by scott8148(6628)

Question 137687: 5x+3<2x+15
Click here to see answer by wvgirl64(4)

Question 137961: Please Help If the sum r+s is 2 less than the difference r-s,then s= my answer is -2
Click here to see answer by solver91311(17077)

Question 137960: A certain company makes a total of 96 ski vests each day in sizes small, meduim and large. If the number of vests made daily in the small and large sizes combined is equal to the number of vests made daily in the meduim size, what is the daily production of vests in the meduim size. my answer is 48. Can you please help me. thanks william.
Click here to see answer by ankor@dixie-net.com(15747)

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, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965