Questions on Algebra: Equations answered by real tutors!

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 Algebra: Equations Solvers Lessons Answers archive Quiz In Depth

 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 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 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 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 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 solver91311(17077)

 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 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 137125: solve the equation x+7/3 = 37/15 - x-2/5 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)