Questions on Algebra: Systems of equations that are not linear answered by real tutors!

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Algebra: Systems of equations that are not linear

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Question 89343:
Click here to see answer by malakumar_kos@yahoo.com(315)

Question 89547: -3x+2y-z= -14
What does z =?
Click here to see answer by checkley75(3666)

Question 89543: 4x-4y-z=38
What does x =?
Click here to see answer by checkley75(3666)

Question 89548: Sheri drove southeast from Alberquerque to Roswell and then south to Carlsbad. She averaged 75 mph along the route from Alberquerque to Roswell and averaged 70 mph from Roswell to Carlsbad. She covered the entire 220 miles in 3 hours. How long did she take to drive from Alburquerque to Roswell?
Click here to see answer by scott8148(3385)

Question 89878: When my professor explains this I understand. When I get home, it is like written in Hebrew or something. Can you please explain to me (in detail) how to solve a problem like this? I am trying to solve for (x,y,z). My final in is tomorrow and I need to know this stuff. Thanks in advance.
x+y+2z=11
x+y+3z=14
x+2y-z=5
Click here to see answer by checkley75(3666)

Question 91547: PLEASE HELP! I am not good with story problems and i am stump with this story equation. Here it is...
Steve, Theresa, and Christine play a round of golf together. Their combined score is 223. Steves score was 3 more than Christine's, and Theresa's score was 7 more than Steve's. What was each persons score?
Steve's score...
Theresa's score...
Christine's score...
Please help me on how to write the story problem to an equation.
THANK YOU for your help!
Click here to see answer by stanbon(26297)

Question 91631: The first of three numbers exceeds twice the second number by 4, while the third number is twice the first. If the sum of the three numbers is 54, find the number.
thanks to the person who will help me solve this question
Click here to see answer by ankor@dixie-net.com(6693)

Question 91693: how do i solve this system of equations

Click here to see answer by psbhowmick(456)

Question 92298: Solve the nonlinear system by substitution:

Click here to see answer by jim_thompson5910(13794)

Question 92524: please help me to solve the systems of equations

3/2X-1/3Y=1/2
2X-1/2Y=-1/2
Click here to see answer by jim_thompson5910(13794)

Question 92678: x squared - y squared = 39
x - y = 3

I don't know how to set up this problem to find a solution.
Thanks!
Click here to see answer by Nate(3495)

Question 93474: (4x^8)(4x^-3)
Click here to see answer by checkley75(3666)

Question 93712: please help to solve this one I now have grey hair
given f(x)=5x to the 2nd-3x+1, find f(-2). thank you
Click here to see answer by Earlsdon(4900)

Question 94749: I'm trying to solve this simultaneous equation, but I can't get "x" on its own. Can you help me please?
3x + 2y = 17
2x - y = 2
Click here to see answer by edjones(3299)

Question 95035: -13+4W=-37
Click here to see answer by checkley71(8405)

Question 95323: Lucia's aunt is now three times as old as Lucia. Fifteen years ago, her aunt was five times as old as Lucia. How old are Lucia and her aunt?

Click here to see answer by ankor@dixie-net.com(6693)

Question 96121: Two angles add up to 90 degrees. If their masures are in a ratio of 2:7, find the smaller angle.
Click here to see answer by checkley71(8405)

Question 96275: Please Help
y=3x
x+y=4
Click here to see answer by checkley71(8405)

Question 96280: Help me please
2x+5y=3
-x+3y=-7
Click here to see answer by checkley71(8405)

Question 96284: Hello I am being asked a question that I do not understand, It asks to Solve a system of equations to find the two numbers described.
The sum of two numbers is 17 and their difference is 29
Click here to see answer by checkley71(8405)

Question 96285: Hello I am being asked a question that I do not understand, It asks to Solve a system of equations to find the two numbers described.
The sum of a number and twice a greater number is 8. The sum of the greater number and twice the lesser number is -6
Click here to see answer by checkley71(8405)

Question 96281: Help me please i dont understand
2x+2/3y=-8
1/2x-1/3y=1
Click here to see answer by jim_thompson5910(13794)

Question 96283: Help please I don't understand
0.5x + 0.4y = -1
0.3x + 0.6y = -0.6
Click here to see answer by checkley71(8405)

Question 96279: Please Help
x+4y=-8
x-4y=-8
Click here to see answer by scott8148(3385)

Question 96278: Please Help
x-5y=10
2x-10y=20

Click here to see answer by scott8148(3385)

Question 96596: im not sure where this would go under topics.
but.
we need to factor a problem.
i know how to factor the problem.
but i don't know what to numbers to use.
the numbers have to multiply together to get postive 84
and add together to get negitive 31
thanks.
C:
Click here to see answer by stanbon(26297)

Question 96657: Scientific notation
Divide. Write answer in scientific notation
59.5x10^-16/8.5x10^-6
Click here to see answer by checkley71(8405)

Question 96659: Multiply
(x +2)(x+1)(x-2)
Click here to see answer by checkley71(8405)

Question 97299: Please help me to solve this problem: 12-4k=-18+11k
Can you show me the steps to help me know how to do the problem.
Click here to see answer by stanbon(26297)

Question 97493: x=8+3y
2x-5y=8
Click here to see answer by edjones(3299)

Question 97526: Solve the system of equation by the substitution method.
y=3x+8
x=y
Click here to see answer by checkley71(8405)

Question 97575: Please help i do not understand how to solve this equation??
x-5y=10
2x-10y=20
Click here to see answer by checkley71(8405)

Question 97576: Help me please, I do not know how to solve these types of equations,
0.5x+0.4y=-1
0.3x+0.6y=-0.6
Click here to see answer by checkley71(8405)

Question 97584:

Click here to see answer by stanbon(26297)

Question 97584:

Click here to see answer by edjones(3299)

Question 97531: what are the steps for solving x+y=4
Click here to see answer by checkley71(8405)

Question 97630:

Help me please!!! Explain??
Click here to see answer by checkley71(8405)

Question 97574: How do you solve this equation?
x-6y=4
3x-18y=4
Click here to see answer by Msgenes(10)

Question 97573: How do you solve this equation??
5x-y=10
7x-2y=11
Click here to see answer by Msgenes(10)

Question 97837: 2 times a number, increased by 28, is less than or equal to 6 times that number.
Click here to see answer by mathslover(126)

Question 97837: 2 times a number, increased by 28, is less than or equal to 6 times that number.
Click here to see answer by checkley71(8405)

Question 97839: 2 times a number, increased by 28, is less than or equal to 6 times that number.

Click here to see answer by Kayla843(1)

Question 97919: xy+xz=2
yx+yz=2
xz+yz=2
Click here to see answer by aaaaaaaa(138)

Question 98029: I looked for this one, but could not find it.
3/x+1 + 2/x-1
Perform the indicated operation.
Click here to see answer by kiljoy(51)

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