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Tutors Answer Your Questions about Systems-of-equations (FREE)
Question 167813: Solve each system by the substitution method. Determine whether the equations are independent, dependent or inconsistent
x = 2y -7
3x + 2y = -5
x – y = 5
2x = 2y + 14
: Solve each system by the substitution method. Determine whether the equations are independent, dependent or inconsistent
x = 2y -7
3x + 2y = -5
x – y = 5
2x = 2y + 14
Click here to see answer by midwood_trail(231)  |
Question 167734: i have some problems with this system ? can you tell me how to solution sytem
sytem is x^3 + y^3 = 1
x^2y + 2xy^2 + Y^3 = 2
please contact with me as soon as you can: i have some problems with this system ? can you tell me how to solution sytem
sytem is x^3 + y^3 = 1
x^2y + 2xy^2 + Y^3 = 2
please contact with me as soon as you can
Click here to see answer by Edwin McCravy(2043) |
Question 167621This question is from textbook intermediate algebra
: I just finished my math homework and I have a few that I am not sure if they are correct or not. Here are the problems, along with the answers i came up with. Please let me know if they are correct, or if they aren't correct, what I need to be doing instead.
(from Intermediate Algebra by McKeague Ch 6, secion 2)
2.) (6x^3+12x^2-9x)/(3x)
answer: 2x^2+4x-3
6.) (6y^4-3y^3+18y^2)/(9y^2)
answer: 2y^2-y+2
14.) (x^2-x-6)/(x+2)
answer: x+3
20.) (x^3+8)/(x+2)
answer: x-2
28.) (3x^3-5x^2+2x-1)/(x-2)
answer: [x^2(3+5)+2x+1]/(x-2)
32.) (9y^3-6Y^2+8)/3Y-3)
answer: 3y^2y[(8-3y)/(3y-2)]
thanks!This question is from textbook intermediate algebra
: I just finished my math homework and I have a few that I am not sure if they are correct or not. Here are the problems, along with the answers i came up with. Please let me know if they are correct, or if they aren't correct, what I need to be doing instead.
(from Intermediate Algebra by McKeague Ch 6, secion 2)
2.) (6x^3+12x^2-9x)/(3x)
answer: 2x^2+4x-3
6.) (6y^4-3y^3+18y^2)/(9y^2)
answer: 2y^2-y+2
14.) (x^2-x-6)/(x+2)
answer: x+3
20.) (x^3+8)/(x+2)
answer: x-2
28.) (3x^3-5x^2+2x-1)/(x-2)
answer: [x^2(3+5)+2x+1]/(x-2)
32.) (9y^3-6Y^2+8)/3Y-3)
answer: 3y^2y[(8-3y)/(3y-2)]
thanks!
Click here to see answer by Fombitz(1741) |
Question 167581: ordered pair of (3,6) is a solution of the following system of equations: --9x-2y=-39, 3x+5y=39 True or False: ordered pair of (3,6) is a solution of the following system of equations: --9x-2y=-39, 3x+5y=39 True or False
Click here to see answer by Alan3354(1216) |
Question 167537: please help me solve these problems! Thanks!
x^3-3x2-x+3=0
y^2+2y-21=-2y: please help me solve these problems! Thanks!
x^3-3x2-x+3=0
y^2+2y-21=-2y
Click here to see answer by Edwin McCravy(2043) |
Question 167462: (-3,4), (3,-4)
please help me write an equation in slope intercept form of the line passing through the given points.
thanks :): (-3,4), (3,-4)
please help me write an equation in slope intercept form of the line passing through the given points.
thanks :)
Click here to see answer by checkley77(3412) |
Question 166691: Please help with the following equation:
A medical supply company has 1150 worker-hours for production, maintenance, and inspection. Using this and other factors, the number of hours used for each operation, P, M, and I, respectively, is found by solving the following system of equations. Find P, M and I.
P + M + I = 1150
P = 4I - 100
P = 6M + 50
: Please help with the following equation:
A medical supply company has 1150 worker-hours for production, maintenance, and inspection. Using this and other factors, the number of hours used for each operation, P, M, and I, respectively, is found by solving the following system of equations. Find P, M and I.
P + M + I = 1150
P = 4I - 100
P = 6M + 50
Click here to see answer by ankor@dixie-net.com(4502) |
Question 166587: 2/5[15(-10/11)-20=-8(-10/11)+3(-10/11)-6
or
2/5(15p-20)=-8p+3(p-6) and p=-10/11
please help me to solve this. Thank you.: 2/5[15(-10/11)-20=-8(-10/11)+3(-10/11)-6
or
2/5(15p-20)=-8p+3(p-6) and p=-10/11
please help me to solve this. Thank you.
Click here to see answer by edjones(2391) |
Question 166466: A local electronics store will sell 7 AC adaptors and 3 rechargeable flashlights for $84. what is the price of a single AC adaptor and a single reachargeable flashlight?: A local electronics store will sell 7 AC adaptors and 3 rechargeable flashlights for $84. what is the price of a single AC adaptor and a single reachargeable flashlight?
Click here to see answer by ankor@dixie-net.com(4502) |
Question 166543: can someone please show me how to do this problem:
Use the Gauss-Jordan method to solve the system of equations.
x+y+z=7
x-y+2z=7
2x+3z=14
a. 3z+14/2; z/2; z
b. -3z-14/2; z/2; z
c. -3z+ 14/2; z/2; z
d. -3z+14/2; 2z; z: can someone please show me how to do this problem:
Use the Gauss-Jordan method to solve the system of equations.
x+y+z=7
x-y+2z=7
2x+3z=14
a. 3z+14/2; z/2; z
b. -3z-14/2; z/2; z
c. -3z+ 14/2; z/2; z
d. -3z+14/2; 2z; z
Click here to see answer by stanbon(18787) |
Question 166394: Please help me with the following question:
Find an equation of variation where y varies jointly as x and z and inversely as the square of w and y=20 when x=-0.5, z=4, and w=5.: Please help me with the following question:
Find an equation of variation where y varies jointly as x and z and inversely as the square of w and y=20 when x=-0.5, z=4, and w=5.
Click here to see answer by gonzo(444) |
Question 166398: Can someone please help me with the following question:
For, what does Descartes rule of signs tell you about the number of positive real zeros? What does it tell you about the number of negative real zeros?
: Can someone please help me with the following question:
For, what does Descartes rule of signs tell you about the number of positive real zeros? What does it tell you about the number of negative real zeros?
Click here to see answer by Mathtut(373) |
Question 166400: Can someone please help me with the question:
Use the rational zeros theorem to list all possible rational zeros of P(x)=3x^3-5x^2+4x-2
: Can someone please help me with the question:
Use the rational zeros theorem to list all possible rational zeros of P(x)=3x^3-5x^2+4x-2
Click here to see answer by oscargut(667)  |
Question 166397: Can someone please help me with the following question:
Find a rational function that has x=4 and x=3 as vertical Asymptotes, and (-2,0) as an x-intercept.
Thanks!
: Can someone please help me with the following question:
Find a rational function that has x=4 and x=3 as vertical Asymptotes, and (-2,0) as an x-intercept.
Thanks!
Click here to see answer by oscargut(667) |
Question 166395: Can someone please help me with the following question:
The current I in electrical conductor varies inversely as the resistance R of the conductor. Suppose I is 0.2 amperes when the resistance is 200 ohms. Find the current when the resistance is 250 ohms.: Can someone please help me with the following question:
The current I in electrical conductor varies inversely as the resistance R of the conductor. Suppose I is 0.2 amperes when the resistance is 200 ohms. Find the current when the resistance is 250 ohms.
Click here to see answer by Mathtut(373) |
Question 166395: Can someone please help me with the following question:
The current I in electrical conductor varies inversely as the resistance R of the conductor. Suppose I is 0.2 amperes when the resistance is 200 ohms. Find the current when the resistance is 250 ohms.: Can someone please help me with the following question:
The current I in electrical conductor varies inversely as the resistance R of the conductor. Suppose I is 0.2 amperes when the resistance is 200 ohms. Find the current when the resistance is 250 ohms.
Click here to see answer by Alan3354(1216) |
Question 166225: Okay i need step-by-step instructions on how to solve problems like:
1) Solve each system by graphing:
y=3x-4
y=-3x+2
2) y=5/4x-2
y=5/4x-1
: Okay i need step-by-step instructions on how to solve problems like:
1) Solve each system by graphing:
y=3x-4
y=-3x+2
2) y=5/4x-2
y=5/4x-1
Click here to see answer by Fombitz(1741) |
Question 165025This question is from textbook
: x-y+z
x+y+3z
2x-y+2z
The correct answer is suppose to be (4,2,-3). However the answer I keep getting is (-3,1/2, 1 1/2). Can you please help me. This question is from textbook
: x-y+z
x+y+3z
2x-y+2z
The correct answer is suppose to be (4,2,-3). However the answer I keep getting is (-3,1/2, 1 1/2). Can you please help me.
Click here to see answer by Alan3354(1216) |
Question 164414: what is the solution of the following system of equations?
y=x+4
y=-2x+1: what is the solution of the following system of equations?
y=x+4
y=-2x+1
Click here to see answer by Fombitz(1741) |
Question 164037: Solve the system below TWICE: graphically and algebraically.
y=-2x+6
y=1/2x-9
Verify that your solutions from the different methods are the same.: Solve the system below TWICE: graphically and algebraically.
y=-2x+6
y=1/2x-9
Verify that your solutions from the different methods are the same.
Click here to see answer by oscargut(667) |
Question 162481: solve the following by any method
x=3/2y + 2
2x - 3y =4
the equations are dependent
the system is inconsistent: solve the following by any method
x=3/2y + 2
2x - 3y =4
the equations are dependent
the system is inconsistent
Click here to see answer by checkley77(3412) |
Question 161600: My worksheet says:
Solve the system of equations:
3X+2Y=17
2X-Y=9
Please help
thanks: My worksheet says:
Solve the system of equations:
3X+2Y=17
2X-Y=9
Please help
thanks
Click here to see answer by Alan3354(1216) |
Question 161600: My worksheet says:
Solve the system of equations:
3X+2Y=17
2X-Y=9
Please help
thanks: My worksheet says:
Solve the system of equations:
3X+2Y=17
2X-Y=9
Please help
thanks
Click here to see answer by jim_thompson5910(9217) |
Question 160641: How would you classify and graph the following system?
y=x+4
y+x=4
Then, how would you find the solution to this system from the graph?
Thank you!: How would you classify and graph the following system?
y=x+4
y+x=4
Then, how would you find the solution to this system from the graph?
Thank you!
Click here to see answer by checkley77(3412) |
Question 160385This question is from textbook Introductory and Intermediate Algebra, 3e
: Soybean meal is 14% protein ; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get the 280lb mixture that is 13% protein?
How many pounds of the cornmeal should be in the mixture?
How many pounds of the soybeans meal should be in the mixture?This question is from textbook Introductory and Intermediate Algebra, 3e
: Soybean meal is 14% protein ; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get the 280lb mixture that is 13% protein?
How many pounds of the cornmeal should be in the mixture?
How many pounds of the soybeans meal should be in the mixture?
Click here to see answer by checkley77(3412) |
Question 160076: Assume that y varies directly as x. Find y when x = 54 if y = 1/4 when x = 3/2.: Assume that y varies directly as x. Find y when x = 54 if y = 1/4 when x = 3/2.
Click here to see answer by midwood_trail(231) |
Question 160077: Assume that y varies as z, and y = 18 when x = 3. Find the constant of variation.: Assume that y varies as z, and y = 18 when x = 3. Find the constant of variation.
Click here to see answer by midwood_trail(231) |
Question 160078: Assume that y varies inversely as x. If y = 8 when x = 2.5, find x when y = 2.: Assume that y varies inversely as x. If y = 8 when x = 2.5, find x when y = 2.
Click here to see answer by Alan3354(1216) |
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