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

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Question 133070This question is from textbook
: Please solve
-5/6x < or equal to 3/4 +8/3xThis question is from textbook

Click here to see answer by Juhi(44)

Question 134457: solve the linear equation by using the elimination method.
x + 2y=2
1/2x + 1/3y=1
Click here to see answer by vleith(1977)

Question 134457: solve the linear equation by using the elimination method.
x + 2y=2
1/2x + 1/3y=1
Click here to see answer by jim_thompson5910(13787)

Question 134461: solve by using elimination method
x+2y=4
1/2x + 1/3y=1
Click here to see answer by jim_thompson5910(13787)

Question 134625: find an equation of the circle passing through the points (1,3),(-2,6),(4,2)
Click here to see answer by solver91311(5072)

Question 134719: This is the equation 4x+3Y=12. The instructor picked the three coordinates
a. X is 0, Y is 4 - I understand the equation for this
b. X is 3 and Y is ) Do not understand how the equation was solved with the Y being 0?
c. X is 4 and Y is -1.33 or -4/3 . Again how was the equation solved to get this coordinate
Thank you
Click here to see answer by vleith(1977)

Question 134806This question is from textbook Algebra 1 workbook
: Can you help me solve for x
mx(squared)=5xThis question is from textbook Algebra 1 workbook

Click here to see answer by solver91311(5072)

Question 134802This question is from textbook Algebra 1 workbook
: Can you help me solve:
3b-a=-7
5a+6b=14This question is from textbook Algebra 1 workbook

Click here to see answer by josmiceli(3003)

Question 134930: Are all linear equation functions?
Is there an instance when a linear equation is not a function?
Can you give an example of and nonlinear equation?
Click here to see answer by vleith(1977)

Question 134936This question is from textbook algebra 2

: Could you please help with the following problem. It needs to be solved using the elimination method. The answer that I calculated is not what the book shows. Thanks.
x^2+y^2=16
4x^2-9y^2=36
The answer must be in square root format (different form what the book asks for)This question is from textbook algebra 2

Click here to see answer by vleith(1977)

Question 135052This question is from textbook Algebra 1 workbook
: How do I translate to a system of equations and solve?
A collection of nickels and dimes is worth $16.05. There are 218 coins in all. How many are nickels and how many are dimes?
This question is from textbook Algebra 1 workbook

Click here to see answer by vleith(1977)

Question 135066This question is from textbook Algebra 1 workbook
: How do I translate to a system of equations and solve?
Corrin is 23 years older than Beth. In 9 years, Corrin will be twice as old as Beth. How old are they now?This question is from textbook Algebra 1 workbook

Click here to see answer by checkley77(7035)

Question 135340: I have three questions if that is ok.

Solve for x: 5x - 12 = 4x + 5
Solve for x: -3(4x+3)-2 = 7 -2x + 3
Solve for x: (x + 3)/4 - 3/2 = (x + 4)/8
thank you in advance for you help
Click here to see answer by checkley77(7035)

Question 135392This question is from textbook Essentials of Elementary Algebra
: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: 2x+3y=7
x=2
So would it be 2(2)+3(y)=7? How do I get y?
4+3y=7 I would think that y would equal 1 since 3*1=3+4 would equal 7
However, I am not sure if this is the way the problem needs to be worked out.
Will you please help me understand this? Thank you!This question is from textbook Essentials of Elementary Algebra

Click here to see answer by stanbon(26259)

Question 135393This question is from textbook Essentials of Elementary Algebra
: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: y=x-3 x+y=5

x+x-3=5 if I am reading the problem right.
But I am not sure where to go after that.
Will you please help me understand this? Thank you!This question is from textbook Essentials of Elementary Algebra

Click here to see answer by stanbon(26259)

Question 135395This question is from textbook Essentials of Elementary Algebra
: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: y=4-3x 3x+y=5

But I am not sure where to go after that.
Will you please help me understand this? Thank you!This question is from textbook Essentials of Elementary Algebra

Click here to see answer by stanbon(26259)

Question 135394This question is from textbook Essentials of Elementary Algebra
: Solving Systems of Linear Equations by the Substitution Method.
I am having a difficult time understanding how to do this. I was hoping someone could help me.
The problem is: x=y-2 x+3y=2

But I am not sure where to go after that.
Will you please help me understand this? Thank you!This question is from textbook Essentials of Elementary Algebra

Click here to see answer by stanbon(26259)

Question 135572: x+3y=4
Click here to see answer by checkley77(7035)

Question 135751: How would I solve this Equation the fractions confuse me ? :

1)x/3 - 7/8 = 2/5(x + 15/4)
Click here to see answer by ptaylor(1578)

Question 135833: How do you solve this system of equations by graphing? y=-3x-2 y=x-2
Please give me an answer as soon as possible the assignment is do tomorrow 4/9/08.
Thank You for all your help Taylor
Click here to see answer by ankor@dixie-net.com(6691)

Question 135962: 2y-x=3
x=3y-5
Click here to see answer by checkley77(7035)

Question 136114: Linear functions
y=3/4x + 2, find x if y=2/3
Click here to see answer by ijeoma(3)

Question 136303: I have two sets of points; (42,20) and (52,10). I need an equation in the form of y = mx + b. The answer I got was y = 1x - 22. Is this correct?
Click here to see answer by scott8148(3382)

Question 136365: Graph the equations; calculate the slope, x-intercept, and y-intercept.
3x = -2
This is what I got so far.
3x/3 = -2/3
x = 0.667
I'm not sure how to graph this; find the slope and the x & y intercepts. Thanks!

Click here to see answer by checkley77(7035)

Question 136364: Confused, not sure how to find the solution.
Find the area of a rectangle if three of its corners are (-0.1,-3.4), (-7.9,-3.4), and (-0.1,6.8).
Thanks!
Click here to see answer by scott8148(3382)

Question 136567: How do I go about solving this? The answer is yes but I don't know why. Please help. Thank You very much:)
Determine whether the given point is in the solution set to the given system.
(-3, -1, 4)
2x-2y-3z=-16
4x-3y+3z=3
x+y-5z=-24
Click here to see answer by stanbon(26259)

Question 136706: please help me with finding the equation of the line with a slope of -1/2 that passes through (2,-4). State in slope intercept form.
Click here to see answer by scott8148(3382)

Question 136872: Two foods, I and II contain the following percentages of carbohydrates, protein, and fat:
Food Carbohydrates Protein Fat
I 40% 50% 6%
II 60% 20% 4%
Food I costs 3c. per gram, and food II costs 4c per gram. Determine the amount of each that should be served to produce at leat 10 grams of carbohydrates, 7.5 grams of protein, and 1.2 grams of fat, if cost is to be minimized.
Let x=amount of food I
Y=amount of food II
minimize z=0.03x + 0.04y, subject to 0.4x+0.6y=10
0.5x +0.2y=7.5
0.06x+0.04y=12
x=0, y=0
How should I draw this and add this formula in excel?
Click here to see answer by stanbon(26259)

Question 136893This question is from textbook algebra 1
: help me solve please:
y+3x=9
i dont get how to solve/get for x & y.
This question is from textbook algebra 1

Click here to see answer by stanbon(26259)

Question 136911: Please help! It looked easy to solve but I've been at it for fifty minutes and my solutions are not anywhere near (0,1). Can someone please help me? Thank You:)
Solve the system.
y=3^x
y=5^x
Thanks again!
Click here to see answer by dolly(163)

Question 137094: what is y=3/2x-5 - Please help?!?!?
Click here to see answer by checkley77(7035)

Question 137178This question is from textbook
: Could you please solve this problem by addition method?
x+y=13
22x+36y=356
Thank you.This question is from textbook

Click here to see answer by checkley77(7035)

Question 137256: Could someone help me understand how to solve the problem posted...especially how the variable or unknown will be removed from the denominator. Any help would be greatly appreciated.
Question:
Solve the following system:
5/3a - 7 = -2/5b
7/6a - 1/10b = 3

Click here to see answer by stanbon(26259)

Question 137275: Could you please solve this system by the addition method, indicating if the system is independent, inconsistent, or dependent.
I really appreciate your help. Thank you very much.
-3x + y = 3
2x - 3y = 5
Click here to see answer by oscargut(682)

Question 137269This question is from textbook
: Could you please solve by using sustitution method. Please show details.
Thank you.
x - y = 3
3x - 2y = 3This question is from textbook

Click here to see answer by MORUPHOSUOLALE(24)

Question 137270This question is from textbook
: Could you please solve by using sustitution method. Please show details.
Thank you.
x - y = 3
x=3+y
Now substitute x value of 3+y into the below equation
3x - 2y = 3
3(3+y)-2y=3
9+3y-2y=3
9+y=3 subtract 9 to each side
y=3-9
y=-6
x-y=3
x=3+y
x=3+(-6)
x=-3
This question is from textbook

Click here to see answer by tns_tutor5000(9)

Question 137267: write the equation for:
on a canoe trip, Rita paddled upstream (against the current) at an average speed of 2 mi/h relative to the riverbank. On the return trip downstream (with the current), her average speed was 3 mi/h. Find Rita's paddling speed in still water and the speed of the river's current.
Click here to see answer by ankor@dixie-net.com(6691)

Question 137276This question is from textbook
: Please help and solve this system by the addition method and indicate if the problem is independent, inconsistent or dependent. Thank you.
x + 3 (y - 1) = 11
2(x - y) + 8y = 28
Thank you very much. This question is from textbook

Click here to see answer by Fombitz(2113)

Question 137272This question is from textbook
: Could you please solve by using sustitution method. Please show details.
Thank you.
x - y = 3
3x - 2y = 3
Also please tell if it is independent, inconsistent or dependent.This question is from textbook

Click here to see answer by Fombitz(2113)

Question 137243This question is from textbook
: can you please solve this by the substitution method?
y - 2x = -7.5
3x - 5y = 3.2
Thank you for your assistance.This question is from textbook

Click here to see answer by ankor@dixie-net.com(6691)

Question 137356: I am finding partial decomposition very intimidating-Please help if you can:)Thank You very much!
Find the unknowns on the right side of the partial fraction decomposition.
x+3/x^3+64=A/x=4+Bx+C/x^2-4x+16
Click here to see answer by stanbon(26259)

Question 137354: Could someone please show me step-by-step how to solve this? Thank You for your help.
Solve the system.
4x^2-4y^2=20
3x^2+2y^2=35
Click here to see answer by stanbon(26259)

Question 137404This question is from textbook
: Tutor could you please assist and solve this by the substitution method?
3y = x + 5
3x - 9y = -10
I do so very much appreciate your help.
Thank you.This question is from textbook

Click here to see answer by ptaylor(1578)

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