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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 212035: If 4x + 2z = 8+5y what does "Y" equal?
Click here to see answer by ankor@dixie-net.com(15622)

Question 212086: Katie has a collection of nickels, dimes, and quarters with a total value of $4.35. There are 3 more dimes than nickels. How many of each coin is in her collection?
Could you help me as well as give me some tips when dealing with word problems in math?
Click here to see answer by stanbon(57203)

Question 212154: 13 - (3m + 27)/3 = -2m - 12
Click here to see answer by drj(1380)

Question 212241: my equation is f(x)= 4x i have to input f(6) and f(0) please help
Click here to see answer by stanbon(57203)

Question 212241: my equation is f(x)= 4x i have to input f(6) and f(0) please help
Click here to see answer by ichudov(499)

Question 212244: f(x)=2x+14
input: f(7), and f(-2)
Click here to see answer by ichudov(499)

Question 212244: f(x)=2x+14
input: f(7), and f(-2)
Click here to see answer by stanbon(57203)

Question 209884: how to eliminate variables by using the addition method?.
3x-4y+4z=7
x-y-2z=2
2x-3y+6z=5
Click here to see answer by stanbon(57203)

Question 212515: 0.2(x+3)- 4(2x-3)= 3.4
Click here to see answer by stanbon(57203)

Question 212446: 3x-2y=-7
x+y=1
Click here to see answer by drj(1380)

Question 212408: 3x+y=44
2x+y=31
Click here to see answer by drj(1380)

Question 212409: 3x+y=44
2x+y=31
Click here to see answer by drj(1380)

Question 212606: solve by subsitution
x+4y=3
2x+3y=-4
Click here to see answer by drj(1380)

Question 212630: 6x=2x-11 dont understand how to solve!
Click here to see answer by vleith(2825)

Question 212668: Write the equation in standard form using intergers.
y=-3/4x-4
Click here to see answer by rapaljer(4667)

Question 212668: Write the equation in standard form using intergers.
y=-3/4x-4
Click here to see answer by stanbon(57203)

Question 212519: Solve each equation
3/x-2 + 1/x+2 =12/x2 - 4
I know that I need to find a common denominator and to reduce the x squared would be:
3/X-2 + 1/X+2 = 12/(x+2)(x-2)

This is where I get confused.
The common denominator is x + 2
3 (x+2) + 1 (x-2) = 12
3x + 6 + 1x - 2 = 12
4x - 4 - 12 = 0
(2x - 3) (2x +4) = 0
Click here to see answer by stanbon(57203)

Question 212338: help me solve this problem. I have to make a linear equation to solve this problem NHL player got a total of 215 points he obtained 111 more assists than goals. How many goals did the player have that year
Click here to see answer by Theo(3458)

Question 212278: how do u right 5x+3y=z+2 in standard form
Click here to see answer by drj(1380)

Question 212969: find the vertex of the parabola
y= x^2-2x-1
vertex (?,?)
Click here to see answer by drj(1380)

Question 212998: Need help in graphing the following compound inequality
x+y>_ 2 and y<_ 2
and shading help please
Thanks
Click here to see answer by drj(1380)

Question 212996: solve the system by substitution for the following problem:
x+8y=-7
8x+9y=7
also need to see what ths looks like on a graph?
Thank you
Click here to see answer by drj(1380)

Question 212996: solve the system by substitution for the following problem:
x+8y=-7
8x+9y=7
also need to see what ths looks like on a graph?
Thank you
Click here to see answer by Earlsdon(6287)

Question 212995: solve the system of equations graphically, If the system does not have a single ordered pair as a solution, state whether the system is inconsistent or dependent for the following problem
2x+y=-1
2x+y=-7
Click here to see answer by drj(1380)

Question 213292: How many gallons of a 4% acid solution should be mixed with 30 gallons of a 13% acid solution to obtain a mixture that is 7% acid?
Click here to see answer by checkley77(12569)

Question 213292: How many gallons of a 4% acid solution should be mixed with 30 gallons of a 13% acid solution to obtain a mixture that is 7% acid?
Click here to see answer by josmiceli(9645)

Question 213292: How many gallons of a 4% acid solution should be mixed with 30 gallons of a 13% acid solution to obtain a mixture that is 7% acid?
Click here to see answer by stanbon(57203)

Question 213290: solve the system of equations by graphing. Then classify the system as consistent or inconsistent and as dependent or independent.
7x-8y=40
8y-7x=-40
Click here to see answer by Alan3354(30924)

Question 213471: How to solve out 3/5t-1/10t=t-5/2
Click here to see answer by drj(1380)

Question 213501: x+5/2+x-1/2=x-1/3
Click here to see answer by drj(1380)

Question 213529: Use the substitution method to solve the system of equations. Enter your answer as an ordered pair.
3x - y = 7
2x - 2y = 2
Click here to see answer by checkley77(12569)

Question 213529: Use the substitution method to solve the system of equations. Enter your answer as an ordered pair.
3x - y = 7
2x - 2y = 2
Click here to see answer by rfer(12644)

Question 213715: Solve by elimination. Check each solution.
21. 6x-5y=-3
2y-9x=-1
Please help me out ive been stuck on this one for a while!
Click here to see answer by rapaljer(4667)

Question 213715: Solve by elimination. Check each solution.
21. 6x-5y=-3
2y-9x=-1
Please help me out ive been stuck on this one for a while!
Click here to see answer by drj(1380)

Question 213737: use an algebraic approach to solve the problem.
The difference of two numbers is 127. The larger number is three less than six times the smaller number. find the larger and smaller numbers.
Click here to see answer by jim_thompson5910(28476)

Question 211966: please help me solve F(x) = 3x2 - 2x +8 the 3 x is squared.
F(x)=4
F(x)=-1

Click here to see answer by algebrapro18(206)

Question 213819: Hello we are doing substitution and i am having trouble doing it with fractions. i will use this for my fraction sign /. please help.
x/2+y/3=7/6
x/4-3y/2=9/4
Click here to see answer by stanbon(57203)

Question 213820: Hello again im having trouble with this one too. help please.
/ (fraction sign)
1/2x-1/8y=-1/4
-4x+y=2
Click here to see answer by RAY100(1637)

Question 213820: Hello again im having trouble with this one too. help please.
/ (fraction sign)
1/2x-1/8y=-1/4
-4x+y=2
Click here to see answer by stanbon(57203)

Question 213834: x/2=3+(x-30/5)
this is the only question i dont understand too well on my homework please help
Click here to see answer by drj(1380)

Question 213833: x/2=3+(x-30/5)
this is the only question i dont understand too well on my homework please help
Click here to see answer by drj(1380)

Question 213838: Please help me solve this equation: Three times a first number decreased by a second number is 1. The first number increased by twice the second number is 12. Find the numbers

I tried: Let x equal 1st number
Let y equal 2nd number
3x-y=1
3x+2y=12

Click here to see answer by checkley77(12569)

Question 213849: What is the answer to this equation: 5x=+10-6x+3=6-2x-2 and can you tell me how you solved it please and thank you
Click here to see answer by drj(1380)

Question 213899: how to solve linear systems algebraically
problem: 6x-y=-2
-18x+3y=4
Click here to see answer by drj(1380)

Question 213996: Please help me solve the substituation x+y=12 and x-y=-4. I can't figure out how to solve these
Click here to see answer by Alan3354(30924)

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