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

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Question 458410: what is 5overx =2 over 21

Click here to see answer by lili130(1)

Question 458660: solve by substitution/elemination
{x-2y+3z=2} {-x-5y+2z=-11} {2x-y-4z=0}

Click here to see answer by mananth(16946)

Question 458879: My basic thought is this;
x - x(y) = z
Where x represents my gross pay, y represents an unknown percentage and z represents my net pay.
For example: I make $15.00 per hour and work 40 hours per week, so my gross pay is $600.00. However, my net pay is $531.00. How do I find what percentage comes out of my gross pay to give me my net pay? (Hint: y = 11.5%)
In the past I have found it by trial and error. What I'm looking for is the formula that determines this. Can you help me?
Thank you,
David Iannarelli
thegiantslayer@gmail.com
Click here to see answer by nerdybill(7384)

Question 459066: which two lines are paralel ?
I. 5y = -3x-5
II. 5y = -1-3x
III. 3y-2x = -1
Click here to see answer by josmiceli(19441)

Question 459364: whats the equation in the form of Y=mx+b through(3,-5) parallel to y=4x+3

Click here to see answer by MathLover1(20850)

Question 459380: what is m and n if 9m-4n=-18
Click here to see answer by MathLover1(20850)

Question 459427: still stuck, please help
Find the quadratic equation that fits the following set of data points
((-5,124),(4,25),(-3,60))
A classmate of mine had a question similar to this and got this answer:
8x^2 + 8x-7, could that be correct?
Thanks
Click here to see answer by Edwin McCravy(20056)

Question 459556: Write the equation of the line thathas a slope of - 3/4 and passes throught the point (12,-5)
Click here to see answer by solver91311(24713)

Question 459557: Solve the linear system:
5x-y=7
x=-4y+16
Click here to see answer by Alan3354(69443)

Question 459798: Please help me with the linear equation y=-4/3x+1
by finding the y coordinates of the points (-6) (-3) and (6)
Click here to see answer by rfer(16322)

Question 459913: solve dy/dx=(2y-x-4)/(y-3x+3)
plz write me solutoin..
Click here to see answer by stanbon(75887)

Question 459981: Find f(g(-1)), given the following functions:
f(x)=x^2+x-3
f(x)=9x+9
Click here to see answer by Gogonati(855)

Question 460260: i fogot the steps to eliminations.
0.3x - 0.2y = 4
0.5x + 0.3y = - 7/17
can someone help me
Click here to see answer by ilana(307)

Question 460558: Is 2x+3y a linear equation?
Is y=2-5x^3 a linear equation?
Click here to see answer by rfer(16322)

Question 460562: Can someone please help me solve using the elimination method?
5x - 15y = 5
5x - 15y = 6
Click here to see answer by sudhanshu_kmr(1152)

Question 460572: Part 1:
Solve the following system of equations. Please show your work to receive full credit.
x - y = 19
2x + y = 2
Part 2:
Explain which method you chose to solve the system and why you felt it was the best choice.
Click here to see answer by richwmiller(17219)

Question 460634: It's a word problem, which I have no idea how to setup. I'm thinking it's a system of equations.
There were 44000 people at a ball game in Los Angeles. The day's receipts were $369,000. How many people paid $13.00 for a reserved seat and how many paid $6.00 for general admission?
Thank you
Chris
Click here to see answer by JimboP1977(311)

Question 460641: Can someone help me solve this by elemination? What is the solution?
x + 5y = 24
-x+ 5y = 6
Click here to see answer by rwm(914)

Question 460641: Can someone help me solve this by elemination? What is the solution?
x + 5y = 24
-x+ 5y = 6
Click here to see answer by sudhanshu_kmr(1152)

Question 460643: x + 3y = 32
-3x + 2y = 3
When I try to solve for either x or y variable i get a fraction and/or mixed number and I cant solve it.
Thank you for your help
Chris
Click here to see answer by sudhanshu_kmr(1152)

Question 460646: What is the solution of the system?
5x - y = 27
5x +6y = 13
Is the system consistent or inconsistent?
Are the equations dependent or independent?
Click here to see answer by sudhanshu_kmr(1152)

Question 460654: I believe this word problem has 3 variables?
The tigers played 52 games. They won 12 more games than they lost. How many games did they win last season?
Thank you for your help
Chris
Click here to see answer by sudhanshu_kmr(1152)

Question 460867: Find the value of k so that the line has slope m:
6x + ky = 10 and m = -2

Click here to see answer by nerdybill(7384)

Question 461052: solve for x and y.
ax+by=m
{
bx-ay=c
Click here to see answer by MathLover1(20850)

Question 461227: a temp agency offers two payment options for administrative help,option 1-$25 daily plus $10 an hour,option 2-no daily cost but $15 an hour.let x=total hours worked. write a mathematical model reprenting the total temp cost(c),for a four-day temp job in terms of x
Click here to see answer by greek-eng(2)

Question 461204: 0.7(6 − 0.3n) = −2.1
whats the answer
Click here to see answer by rfer(16322)

Question 461454: g(x)= -4x+5, find g(-4)
Click here to see answer by MathLover1(20850)

Question 461793: -5m+6n=-8
-m+3n=-7
how would you solve this using elimatiob by addition?
Click here to see answer by MathLover1(20850)

Question 461811: i need help with the following questions PLEASE!!!!
Solve using the multiplication principle,
1) -2x> 1/9....the solution set x/x ___
2) graph the equation and identify the y-intercept X+Y=-9
4) solve by elimination 4x+5y=5...8x+10y=10
5) solve by substitution 4x+5y=-3...x=4-6y
6)solve 8x-(3x+5)=5 X=__
7) simplify -3[-69-(52-70)]
8) solve the compound inequalities 6>-3x+5 or 9<= -5x+3
9) graph the system of inequalities y>= -3 x>= 5
Click here to see answer by solver91311(24713)

Question 461823: solve by elimination
4x+5y=5
8x+10y=10
Am i suppose to put this into y=mx+b form ?
Click here to see answer by rwm(914)

Question 461825: simplify

what are the steps for this?
Click here to see answer by math-vortex(648)

Question 461824: solve the compound inequalities
6>-3x+5 or 9<= -5x+3
I dont understand this system
Click here to see answer by bucky(2189)

Question 461951: simplify 9t- (3-2t)
Click here to see answer by robertb(5830)

Question 462114: How to solve systems of linear equations such as this one.
4x - y = -4
12 - 3y = 24
Click here to see answer by math-vortex(648)

Question 462094: 6+(-3n+5)=5(7n-3)-9

Click here to see answer by rfer(16322)

Question 462344: Can someone help me solve by the elimination method.
5r � 4s =2
4r +5s = 18
What is the solution?
Click here to see answer by MathLover1(20850)

Question 462679: find the y and x intercepts for -4x+y=11

Click here to see answer by mananth(16946)

Question 462695: solve the systems equations by the substitution method
1. x-5y=14
3x-15y=15
2. 9x+9y=-54
5x-9y=72
3. x-8=y
3x-3y=24
4.x-5y=14
3x-3y=24

Click here to see answer by rwm(914)

Question 462859:
Click here to see answer by pratibha(5)

Question 462853: { 4x-5y=-18
3x+2y=-2
Click here to see answer by Edwin McCravy(20056)

Question 462921: Solve for x and y:
8x+5y=5
7x+10y=-1
Click here to see answer by stanbon(75887)

Question 462921: Solve for x and y:
8x+5y=5
7x+10y=-1
Click here to see answer by MathLover1(20850)

Question 462988: 5x+y=-17
7x-3y=-37
Use the elimination method to solve the system of equations
Click here to see answer by algebrahouse.com(1659)

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