Questions on Algebra: Systems of equations that are not linear answered by real tutors!

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Algebra: Systems of equations that are not linear

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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.
Click here to see answer by Alan3354(6097)

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!

Click here to see answer by oscargut(682)

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

Click here to see answer by oscargut(682)

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?

Click here to see answer by Mathtut(3670)

Question 166273: -x-3y=-4
3x+y=16
Click here to see answer by jojo14344(1483)

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.
Click here to see answer by gonzo(654)

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
Click here to see answer by stanbon(26297)

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?
Click here to see answer by ankor@dixie-net.com(6693)

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.
Click here to see answer by edjones(3298)

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

Click here to see answer by ankor@dixie-net.com(6693)

Question 167351: -2(x-6)
how do i solve this problem
Click here to see answer by Mathtut(3670)

Question 167290: What is the answer to the following equation: 3/x^2-1/x+5
Click here to see answer by midwood_trail(310)

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 :)
Click here to see answer by checkley77(7072)

Question 167537: 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(2922)

Question 167579: solve the following system by any method: x=7/4y+8 4x-7y=32
Click here to see answer by Alan3354(6097)

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
Click here to see answer by Alan3354(6097)

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

Click here to see answer by Fombitz(2113)

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
Click here to see answer by Edwin McCravy(2922)

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

Click here to see answer by midwood_trail(310)

Question 169161: soybean meal is 14% protein, cornmeal is 7% protein, how many pounds of each should be mixed together in order to get a 280 pound mixture that is 12% protein
Click here to see answer by checkley77(7072)

Question 169262: soybean meal is 14% protein, cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280lb mixture that is 9% protein?
Click here to see answer by checkley77(7072)

Question 169769: Problem:
An airplane is 12,000 ft horizontally from the airport. The slanted distance to the airport is 13,000 ft. what is the plane’s altitude?

Thank you.
Click here to see answer by vleith(1977)

Question 170337This question is from textbook Introductory Algebra
: Solve by elimination
8x + 7y = -16
6x - 3y = -12This question is from textbook Introductory Algebra

Click here to see answer by checkley77(7072)

Question 170341This question is from textbook Introductory Algebra
: Solve the problem. Two angles are supplementary, and one is 5 degrees more than six times the other. Find the larger angle.This question is from textbook Introductory Algebra

Click here to see answer by Mathtut(3670)

Question 170344This question is from textbook Introductory Algebra
: Solve the problem. Andy has 8 coins made up of quarters and half dollars, and their total value is $2.50. How many quarters does he have?This question is from textbook Introductory Algebra

Click here to see answer by checkley77(7072)

Question 170347This question is from textbook Introductory Algebra
: Solve the problem. Helen Weller invested $15,000 in an account that pays 12% simple interest. How much additional money must be invested in an account that pays 15% simple interest so that the total interest is equal to the interest on the two investments at the rate of 13%?This question is from textbook Introductory Algebra

Click here to see answer by Mathtut(3670)

Question 170346This question is from textbook Introductory Algebra
: Solve the problem. Ron and Kathy are ticket-sellers at their class play, Ron handling student tickets that sell for $2.00 each and Kathy selling adult tickets for $5.50 each. If their total income for 30 tickets was $105.50, how many did Ron sell?This question is from textbook Introductory Algebra

Click here to see answer by Mathtut(3670)

Question 170339This question is from textbook Introductory Algebra
: Solve by elimination
-6x - 2y = -5
-12x - 4y = -10This question is from textbook Introductory Algebra

Click here to see answer by checkley77(7072)

Question 170335This question is from textbook Introductory Algebra
: Solve the problem. The difference between two numbers is 4. Two times the smaller number minus four times the larger is -28. What are the numbers?This question is from textbook Introductory Algebra

Click here to see answer by checkley77(7072)

Question 170342This question is from textbook Introductory Algebra
: Solve the problem. There were 37,000 people at a ball game in Los Angeles. The day's receipts were $262,000. How many people paid $11 for reserved seats and how many paid $6 for general admission?This question is from textbook Introductory Algebra

Click here to see answer by Mathtut(3670)

Question 170332This question is from textbook Introductory Algebra
: Solve by the substitution method
-5x - 4y = -48
-3x + 2y = 2This question is from textbook Introductory Algebra

Click here to see answer by Edwin McCravy(2922)

Question 170327This question is from textbook Introductory Algebra
: Decide whether or not the ordered pair is a solution of the system
(1, -3)
2x + y = -1
3x + 2y = -3This question is from textbook Introductory Algebra

Click here to see answer by checkley77(7072)

Question 170329This question is from textbook Introductory Algebra
: Decide whether or not the ordered pair is a solution of the system
(12, 6)
y = 1/2 x
2x + y = 18This question is from textbook Introductory Algebra

Click here to see answer by midwood_trail(310)

Question 170330This question is from textbook Introductory Algebra
: Solve using the substitution method
x + y = -4
y = -3x + 2This question is from textbook Introductory Algebra

Click here to see answer by jojo14344(1483)

Question 170331This question is from textbook Introductory Algebra
: Solve using the substitution method
y = 2x - 5
3x + y = 15This question is from textbook Introductory Algebra

Click here to see answer by elima(1433)

Question 170571: Solve the system of equations using the substitution method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
3x + y = 7
4x – y = 21

Click here to see answer by Mathtut(3670)

Question 170569: Find the equation, in slope-intercept form, of the line that passes through the points (5, 2) and (-7, 3). Write the equation in slope-intercept form.

Click here to see answer by Mathtut(3670)

Question 170567: Find the equation of the line perpendicular to 3x – 4y = 9 and passing through (-2, -1). Write the equation in standard form, with all integer coefficients.

Click here to see answer by Mathtut(3670)

Question 170555: the slope of the line that passes through the points (-3, -5) and (-5, 1).
Click here to see answer by Alan3354(6097)

Question 170556: Find the equation, in slope-intercept form, of the line that passes through the points (5, 2) and (-7, 3). Write the equation in slope-intercept form.

Click here to see answer by ankor@dixie-net.com(6693)

Question 171301: 2x-3y=-14
y=4x+8
solve this system of equations by substitution
Click here to see answer by gonzo(654)

Question 171301: 2x-3y=-14
y=4x+8
solve this system of equations by substitution
Click here to see answer by checkley77(7072)

Question 171332: How to solve each system of equations by elimination?
Click here to see answer by Mathtut(3670)

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