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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 330557: -2x + 3y=0
2x + 6y=3
Click here to see answer by Fombitz(13828)

Question 330485: Need help with the problem below.Thanks in advance.
Systems of Equations
Solve the following problems for X and Y in these two system equations, and for X and Y and Z, in these three system equations.
X+10Y+Z=52.....5X+Y+4Z=15.....X+2y-3Z=12..... X=? Y=? Z=?

Click here to see answer by Fombitz(13828)

Question 330688: How does (2,0); (3,0) equial 3x+2y=6
can you explain so I can help my daugther
Click here to see answer by rfer(12660)

Question 330688: How does (2,0); (3,0) equial 3x+2y=6
can you explain so I can help my daugther
Click here to see answer by solver91311(16885)

Question 330818: substitution:
2x+y=5
x-2y=3
Click here to see answer by Fombitz(13828)

Question 330858: Solve the system of equations:
y = x^2 - 4^x + 4 and y = -x^2 + 6x - 8

Click here to see answer by privani(34)

Question 330858: Solve the system of equations:
y = x^2 - 4^x + 4 and y = -x^2 + 6x - 8

Click here to see answer by Fombitz(13828)

Question 330737: f(x) = 2x + 5 when f(7) and f(8)
Click here to see answer by privani(34)

Question 329888: Solve the system by substitution
x + 7y = -2
3x + y =34
Click here to see answer by privani(34)

Question 329869: How would you solve -4x(squared) + 6xy when x = -2 and y = 5
Click here to see answer by privani(34)

Question 330856: Solve the system of equations:
y = x2 + 3x + 5 and y = x2 - 2x - 5

Click here to see answer by Fombitz(13828)

Question 329842: Wireless phone company A charges $20 per month plus $0.12 per minute. Wireless phone company B charges $50 per month plus $0.06 per minute. For how many minutes of calls will the monthly bills be the same?
(A) 80 minutes
(B) 100 minutes
(C) 160 minutes
(D) 250 minutes
(E) 500 minutes
Click here to see answer by privani(34)

Question 330495: If the lengths of a pair of opposite sides of a rectangle were doubled and the other pair of opposite sides were each decreased by 14 m, the new rectangle would be a square with a perimeter of 84 m. Find the rectangle's original dimensions. ........
Click here to see answer by privani(34)

Question 330868: How do I determine if these are consistent or inconsistent?
2x + y = 7
x - 2y = 7
Click here to see answer by Fombitz(13828)

Question 330867: I'm some problems with my algebra lesson. It's systems of equations. I am suppose to figure out if the ordered pair of (8,-1) is a solution to the systems: 2x + 3y = 13 and x - y = 19. I know how to do this, just not with this problem. On the second equation I am confused as to what the x and the y are supposed to be, number wise. What do I do with the x and y when there is no other number?
Click here to see answer by Alan3354(30993)

Question 329663: Solve this system with three linear equations....
4x+3y-5z=-29
3x-7y-z=-19
2x+5y+2z=-10
Thanks!!!
Click here to see answer by Fombitz(13828)

Question 330909: how do you know if its above or below the line

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Question 331164: How can i solve this equation;
7x+5y=9
4x+5y=6
Click here to see answer by AAfter.Com(18)

Question 331163: solve by substitution method (linear equation) x-5y=4 and 3x-4y=12

Click here to see answer by AAfter.Com(18)

Question 331341: How many liters of a 30% alcohol solution must be mixed with 90 liters of a 60% solution to get 40% solution?
Click here to see answer by checkley77(12569)

Question 331850: (0,7);9x+8y=3
i have no clue how to do this
Click here to see answer by Alan3354(30993)

Question 331849: 3x-6y=6

How do i find what
x-intercept is
and the i need y intercept
can any one help me

thanks
Click here to see answer by rfer(12660)

Question 331849: 3x-6y=6

How do i find what
x-intercept is
and the i need y intercept
can any one help me

thanks
Click here to see answer by checkley77(12569)

Question 331794: The perimeter of a rectangular is 26m. The length is 7m more than twice the width. Find the dimensions.
Click here to see answer by rfer(12660)

Question 332044: 2x+5y=9
4x-7y=-16
Click here to see answer by user_dude2008(1861)

Question 332066: I need help. Solve the system of equations.
4x-6y=-26
-2x+3y=13
x=?
Click here to see answer by jim_thompson5910(28595)

Question 332067: I need help. Find the equation of a line that is perpendicular to y=-x + 3 and passes through the point(-1, 2).
Click here to see answer by jim_thompson5910(28595)

Question 332232: Determine whether (-4,-7) is a solution of 2x+4y=16
Click here to see answer by Alan3354(30993)

Question 332285: I am really having a problem figuring out how I do this system of equations. The whole quesrion is: Solve the system of equatons by graphing. Then classify the system as conistentm inconsistent or independent.
What is the solution of the system of equations. (a) apoint (b) no solution (c) infinitly many solutions.
7x - 4y = 8
4y - 7x = -8
Click here to see answer by Alan3354(30993)

Question 332374: I would appreciate help for this problem! I have tried everything!!
To replace a set of brakes, an auto mechanic charges $60 for parts plus $40 per hour for labor.
The total cost, y, is given by the equation y = 40x + 60, where x is the number of hours of labor.
(a) Identify and (b) interpret the meaning of both the slope and the y-intercept.

Click here to see answer by Alan3354(30993)

Question 332408: a cubic packing box has dimensions of 1.2 feet on each side. What is the volume of the box?
Click here to see answer by rfer(12660)

Question 332375: Hello. Can you please help me with this problem?
I need to write these equations in standard form:
a. y= 3x -8
b. y= -x + 8
Standard form is Ax + By= C, correct?
Click here to see answer by rfer(12660)

Question 332612: I am having some trouble with this one.
Solve the system of equations. Let z be the parameter.
x+2y+3z=11
2x-y+z=2
Click here to see answer by Edwin McCravy(8909)

Question 332842: ok im not understanding this.
i thought i had it but the graphs throw me off. please help
Click here to see answer by checkley77(12569)

Question 333176: Solve each system by substitution:
5x+y=10
3x-3y=6

Click here to see answer by checkley77(12569)

Question 333306: The fudge factory sells their new fudge, fabulous fudge, for $6.90 per pound and their popular rocky road fudge for $4.30 per pound. How much of each type should be used to make a delicious duo sell for $9.00.
Click here to see answer by solver91311(16885)

Question 333457: (2x-3)/(4)-(x-5)/(6)=1
Click here to see answer by stanbon(57347)

Question 333521: POST A 50 WORD RESPONSE TO THE FOLLOWING; WHEN SOLVING A RATIONAL EQUATION, WHY IS IT NECESSARY TO PERFORM A CHECK
Click here to see answer by Edwin McCravy(8909)

Question 333566: Solve x^2 + 6x + 9 = 0

Click here to see answer by stanbon(57347)

Question 333679: rewrite the fraction so that the numerator and denominator have the same units. then solve.
simplify:7mins/400sec
Click here to see answer by jim_thompson5910(28595)

Question 333679: rewrite the fraction so that the numerator and denominator have the same units. then solve.
simplify:7mins/400sec
Click here to see answer by stanbon(57347)

Question 333703: What is the answer to the system of equation below?
2x+3z=2
3x+6y=6
x-2z=8
Click here to see answer by Edwin McCravy(8909)

Question 333692: y=2x 3x-4y=10 how would u use the substitution method with these two equations
Click here to see answer by solver91311(16885)

Question 333676: 4x-y-2=0 write in slope intercept form.and sketch the line
Click here to see answer by rfer(12660)

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