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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 158969: how do i solve this equation 1/m + w = c/m?
Click here to see answer by checkley77(12844)

Question 158997: 3y+z=am-4y for y This is chapter 3 section 8
Click here to see answer by checkley77(12844)

Question 159011: km + 5x = 6y, for y This is chapter 3 section 8
Click here to see answer by midwood_trail(310)

Question 159029: 6y+2/3 = c for y Can you please show me step by step formula for the variable specified
Click here to see answer by nerdybill(7384)

Question 159062: i dont get Y=x-4
4x+y=26

Click here to see answer by checkley77(12844)

Question 159005: km+5x=6y, for m solve the equation for the variable specified

Click here to see answer by RegWill(1)

Question 159097: K takes less time than M to travel a distance of 30 miles. K travels 1/3 mile per hour faster than M. If x is K's rate of speed in miles per hour then find K's time for the distance in terms of x
Click here to see answer by nerdybill(7384)

Question 153660: 3x - 2y = 8
-12 + 8y = 32
Click here to see answer by Alan3354(69443)

Question 159202: x + y + z = 6
2x - y + 3z = 9
-x + 2y +2z = 9
Click here to see answer by midwood_trail(310)

Question 159200: 3a - 2b + 7c = 13
a + 8b - 6c = -47
7a - 9b - 9c = -3
Click here to see answer by midwood_trail(310)

Question 159199: 2x-3y+z=5
x+3y+8z=22
3x-y+2z=12
Click here to see answer by midwood_trail(310)

Question 159294: 7. Solve the following system of equations using substitution, elimination, or graphing. Please and Thank you.
y=2x+6
2y+3x=5
Click here to see answer by jim_thompson5910(35256)

Question 159294: 7. Solve the following system of equations using substitution, elimination, or graphing. Please and Thank you.
y=2x+6
2y+3x=5
Click here to see answer by jojo14344(1513)

Question 159381: [C= 60 + .6Y], how do I solve for y?
Click here to see answer by stanbon(75887)

Question 159381: [C= 60 + .6Y], how do I solve for y?
Click here to see answer by KnightOwlTutor(293)

Question 159303: will you help me solve this problem:
9a+7b=-30
8b+5c=11
-3a+10c=73
Click here to see answer by stanbon(75887)

Question 159428: Hi. I need help solving this problem for my physics class. I am a bit rusty on solving systems.
I need to solve for x and y.
47-x=17y
23y+81=-3x
Click here to see answer by jojo14344(1513)

Question 159484: 2-5x>13
Click here to see answer by checkley77(12844)

Question 159585: My problem asks me this:
Solve each system of linear equations.
y=x+2
y=2x
Do I use the xy chart to help work this problem and where do I go from there?
The problem has 2 variables and I don't know how to bring it down to one variable.
Please help me!!
Click here to see answer by ankor@dixie-net.com(22740)

Question 159624: At a club play, 117 ticets were sold. Adults' tickets cost $1.25, and children's tickets cost $0.75. In all, $129.75 was taken in. How many of each kind of ticket was sold?
Click here to see answer by checkley77(12844)

Question 159661: i need help on this problem: 3n-2=10
5
Click here to see answer by oscargut(2103)

Question 159632: is 3x=5y a linear equation
Click here to see answer by Alan3354(69443)

Question 159784: how do you do... substitution on this problem 4p+2q=8
q=2p+1
Click here to see answer by KnightOwlTutor(293)

Question 159964: Linear Equation from slope and point: Suppose that f is a linear function with slope 2.6 and that f(5)=-3. What value of x gives f(x)=0?
2nd Question: Linear Equation from two points: Suppose f is a linear function such that f(3)=5 anf f(7)=-4. Find the equation for f.

Thank you, Andie

Click here to see answer by stanbon(75887)

Question 159921: For what values of k will the system of equations be inconsistent?
x=6y+6
kx-3y=6

work shown needed please.

Click here to see answer by Fombitz(32388)

Question 160162: Can you help me with the folowing two questions? Suppose that f is a linear function with slope 4 and that f(3)=5. Find the equation for f. The answer I got was b=-7. Is that right? Do I right the equation f(x)=4(3)-7?
The 2nd question is: Suppose that f is a linear function such that f(3)=5 and f(7)=-4. Find the equation for f. My answer is I think the slope should be -9/4 but what do I do now?

Click here to see answer by vleith(2983)

Question 160343: -11x = 395 + y
14y = -634 - 10x

I need to solve this system of linear equations using any method. I'd like to see the steps and the correct answer. I'm not sure which method would be the easiest and I'm just stuck. Thank you for all your help.
Click here to see answer by scott8148(6628)

Question 160344: -11x - 3y - 10z = 17
-12x - 5y + 2z = 84
3x - 6y + 3z = 51
I need to solve this system of linear equations using any method. I'd like to see the steps and the correct answer. I'm not sure which method would be the easiest and I'm just stuck. Thank you for all your help.
Click here to see answer by scott8148(6628)

Question 160345: -3x + y + 11z = -410
-4x - 6y + 5z = -214
-2x - 2y + 6z = -244
I need to solve this using any method, but id like to see the steps and the correct answer. I'm not sure where to start with this one, im just lost. Thank you so much for all your help.
Click here to see answer by scott8148(6628)

Question 160365: -4x - 5y - 8z = 268
-10x + 7y + 6z = -786
-12x + 9y - 2z = -548

I need to solve this using any method, but id like to see the steps and the correct answer. I'm not sure where to start with this one, im just lost. Thank you so much for all your help.
I tried to do this on my own, i thought i should multiply the first equation by 3 and add to the 3rd equation,but im not sure what to do next, or if that was even where to start.
Click here to see answer by scott8148(6628)

Question 160409: hi,I have a problem solving this equation: 3p+q=11
p+q=7
santelle
Click here to see answer by Earlsdon(6294)

Question 160358: 3x - 1/2y = 5
1/3x + 1/4y = 3
Solve by elimination
Answer's are X=3 and Y=8
Click here to see answer by checkley77(12844)

Question 160484: How would I write a formula for this and how would I complete it?
"A rectangle is to be drawn with perimeter 64 cm. If the length is to be 14 cm more than the width, determine the area of the rectangle."
Help Please?
Click here to see answer by checkley77(12844)

Question 160537:
I need to solve this using any method. Id like to see the steps and the correct
answer. I think maybe I should start by multiplying the 3rd equation by 2 and
then subtract it from the 1st equation? I'm trying to make sense of this but I
just cant figure it out. I really appreciate your time. Thank you.
Click here to see answer by vleith(2983)

Question 160597: solve for z, then y, then x
-z=3xy+2xz-1
Click here to see answer by checkley77(12844)

Question 160518: -5x - 4y + 12z = -140
9x - 8y + z = -649
3x - 2y + 6z = -290

I need to solve this using any method. Id like to see the steps and the correct answer. I think mabye i should start by multiplying the 3rd equation by 3 and then subtract it from the 2nd equation? I'm trying to make sence of this but i just cant figure it out. I really appericiate your time, thank you.
Click here to see answer by Fombitz(32388)

Question 160694: im in great need on how to solve this equation i dont know how to do any of it could you please help me!?!?!?!!?

4(m+3)-2m=3(m-3)
Click here to see answer by nerdybill(7384)

Question 160708: Assume that the sales of a certain appliance dealer are approximated by a linear function. Suppose that sales were $6500 in 1982 and $64,500 in 1987. Let x =0 represent 1982. Find the equation giving yearly sales S(x).
Available choices:
S(x)= 11,600x + 6,500
S(x)= 58,000x + 64,500
S(x) = 58,000x + 6,500
S(x)= 11,600x + 64,500
Click here to see answer by gonzo(654)

Question 160783: A High school class wants to raise money by recycling news papers. The class decides to rent a truck at the cost of $150 for the week. The market price for recycled news papers is $15 per ton. Write an equation represent the amount of money the class will make based on the number of tons of news papers collected. Explain.
Click here to see answer by KnightOwlTutor(293)

Question 160784: Complete the ordered pair ( ,4) so that it is the solution for x+2y=9.

Click here to see answer by KnightOwlTutor(293)

Question 160785: A man walks at the pace of 3 miles per hour. After 2 hours he stops for a rest. Let t be time after the rest when he continues to walk . Let d be the total distance traveled since he started. Write an equation linking d and t.
Click here to see answer by KnightOwlTutor(293)

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