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

Tutors Answer Your Questions about Systems-of-equations (FREE)

Question 408634: Bob has 60 coins of quarters and dimes. The coins combined value is $9.45. Find out how many of the coins are quarters and how many are dimes.
Click here to see answer by ewatrrr(10682)

Question 409703: I am stuck on this algebra problem and was hoping that you may be able to help me work it out.
Question: Two planes departed in opposite directions. After three hours the faster plane had travelled twice as far as the slower plane. Find the distance each plane travelled if the distance between the planes was 2250 km
Click here to see answer by edjones(7569)

Question 409866: it takes gary twice as long to mow his lawn as it takes his father to do the same job. if they work together they can complete the job in 1 1/2 hours. how long would it take gary to do the job alone?
Click here to see answer by fractalier(2101)

Question 409877: solving systems of equations by substitution
-5x+y=-2
-3x+6y=-12
Click here to see answer by fractalier(2101)

Question 410723: Solve each system of equation below using mulitiplication with the addition method.
1) 5x-2y=4 Shown work:3(5x-2y=4) 15x-6y=12
3x+y=9 5(3x+y=9) 15x+5y=45
-1y=57
-57, i Knew this was not right because my teacher has a clomn of awnsers and this did not match to any y values, Thank you for your help!!!!!

Click here to see answer by scott8148(6628)

Question 410766: x+y=6 Systems of equations in two variables
x-y=4
Click here to see answer by stanbon(57328)

Question 410593: you are planning a rectangular garden. Its length is twice its width x. You want a walkway 2ft wide around the garden.
a. Write an expression for the area of the garden and walk.
B. Write an expression for the area of the walk only.
c. You have enough gravel to cover 76ft^2 and want to use it all on the walk. How big should you make the garden?
Click here to see answer by ankor@dixie-net.com(15649)

Question 411122: The diagonal of a rectangle measures 17cm. The width measures 15cm, what is the lenght......
Click here to see answer by rfer(12657)

Question 412109: Systems of Equations
1. 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.
2. Fill the table, but MAKE SURE you show all your work step by step, below the table, so you may get partial credit even if your final answer is wrong.
3. Fill table 1 (worth 75%):
Table 1
Q #
Equation 1
Equation 2
Equation 3
X=
Y=
Z=

1
X+Y=9
X+2Y=13
none

none

2
3X+7Y=24
9X+5Y=24
none

none

3
4X+Y=17
2X+3Y=21
none

none

4
18X+Y=42
6X-3Y=-6
none

none

5
X+Y+2Z=5
X+Y=5
X+3Y+Z=11

6
X+10Y+Z=52
5X+Y+4Z=15
X+2y-3Z=12

7
2X+2Y+4Z=10
3X+3Y=15
4X+12Y+4Z=44

4. What is the difference between system #5 and system #7?
5. Solve Table 2 (Click here for Table 2) - Answer the question in the box (worth 25%) by:
(a) Just by looking at it, and
(b) transforming the pictures to math equations.
For example the first row would look like this:
11 = 1 Cat + 3 Waves = C+3W
Answer:
Cat =
Wave =
Heart =
U =
Click here for Table 2.

Click here to see answer by solver91311(16877)

Question 412122: X+10Y+Z=52
5X+Y+4Z=15
X+2y-3Z=12

Click here to see answer by Edwin McCravy(8908)

Question 412115: Expectations
As this is a fundamental "hands on" course, it is expected that you master these basic calulation and problem solving exercises.
Then it is expected that you demonstrate how these topics apply to the real world / healthcare setting.
Systems of Equations
1. 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.
2. Fill the table, but MAKE SURE you show all your work step by step, below the table, so you may get partial credit even if your final answer is wrong.
3. Fill table 1 (worth 75%):
Table 1
Q #
Equation 1
Equation 2
Equation 3
X=
Y=
Z=

1
X+Y=9
X+2Y=13
none

none

2
3X+7Y=24
9X+5Y=24
none

none

3
4X+Y=17
2X+3Y=21
none

none

4
18X+Y=42
6X-3Y=-6
none

none

5
X+Y+2Z=5
X+Y=5
X+3Y+Z=11

6
X+10Y+Z=52
5X+Y+4Z=15
X+2y-3Z=12

7
2X+2Y+4Z=10
3X+3Y=15
4X+12Y+4Z=44

4. What is the difference between system #5 and system #7?
5. Solve Table 2 (Click here for Table 2) - Answer the question in the box (worth 25%) by:
(a) Just by looking at it, and
(b) transforming the pictures to math equations.
For example the first row would look like this:
11 = 1 Cat + 3 Waves = C+3W
Answer:
Cat =
Wave =
Heart =
U =

Click here to see answer by ewatrrr(10682)

Question 412292: solve by using either process of elimination or substitution
3/2x + 3y =2
3x - 4y = -16
Click here to see answer by stanbon(57328)

Question 412318: using multiplication principle solve -8/5n=5
Click here to see answer by rfer(12657)

Question 412479: I am not sure if this is the correct category and I apologize if it is.
Question:
Solve algebraically these simultaneous equations.
x^2 + y^2 = 17
y = x + 3
I have rearranged to make; x^2 + x^2 + 6x - 8
but how do I remove one of the x^2's so I can put the equation into brackets and solve?
Click here to see answer by solver91311(16877)

Question 412840: 7-y+5y=9
Click here to see answer by algebrahouse.com(1079)

Question 412840: 7-y+5y=9
Click here to see answer by shree840(260)

Question 413036: Identify the degree of each term of the polynomial and the degree of the polynomial -6x^3+4x^2+3x+4

Click here to see answer by Theo(3460)

Question 413567: Hello this is my problem, I am a student in algebra 1, Introductory and Intermidiate algebra.
Find an equationof the line containing the point (6,9) 9x+y=8
I have to find slope first, which I am confused about finding for this problem. So y=-9x+8 slope is 1/9 i got help with that and I do not get it.
y-y1=m(x-x1)
y-9=1/9(x-6)
y-9=1/9x-54+9
y=1/9x+63 I already know this is not correct but I cannot figure out these types of problems. Please help thank you so much!
Click here to see answer by richard1234(5390)

Question 413813: Can someone help me solve this??
6x+4y=22
2x-y=1

Click here to see answer by bayners123(12)

Question 413904: find the value of x in the system of equation {2x-7y=8
{ x-4y=3

Click here to see answer by jjordan95(63)

Question 414170: What is the solution of the system? Solve by the substitution method.
8x+6y=-12
-9+y=29
Click here to see answer by stanbon(57328)

Question 414191: ordered pairs
.3x-0.2y=4
.4x+0.3y=49/23
my confusion lies on what I should be plugging in, In class I am learning the three different methods substiituion, elimination and graphing. Well I am totally confused on all of them and do not understand what numbers I should be using to solve. Thank you for any help
Click here to see answer by stanbon(57328)

Question 414302: Determine whether the graphs of the equations are perpendicular lines.
x=-3
y=5
Click here to see answer by ewatrrr(10682)

Question 414514: Is (1,5) a solution of the system?
5x-2y=-5
3x-7y=-32
I can only check yes or no for both sets. Thank you! :)
Click here to see answer by jim_thompson5910(28593)

Question 414514: Is (1,5) a solution of the system?
5x-2y=-5
3x-7y=-32
I can only check yes or no for both sets. Thank you! :)
Click here to see answer by algebrahouse.com(1079)

Question 414516: Solve by addition:
3x+y=5
x+2y=0

Thank you in advance! :)
Click here to see answer by algebrahouse.com(1079)

Question 414529: Graph the lines containing these points and find their slope
(2,5) (-3,10)
Click here to see answer by jim_thompson5910(28593)

Question 414640: im using substitution
what is the answer for 2x-y=-4
-3x+y=44
what is the answer for c-5d=2
2c+d=4
what is the answer for 5r-s=5
-3x+y=15
Click here to see answer by ewatrrr(10682)

Question 415939: what is the slope of 3(2y-5)=12
Click here to see answer by praseenakos@yahoo.com(507)

Question 415983: slope:7/3,y-intercept:2( what is an equation of the line with a given slope and y-intercept
Click here to see answer by stanbon(57328)

Question 415983: slope:7/3,y-intercept:2( what is an equation of the line with a given slope and y-intercept
Click here to see answer by Gogonati(809)

Question 416047: I need help with this question. It says:
Is there an even function whose domain is all real numbers and that is always decreasing? Explain.
Thanks for any help!
Click here to see answer by stanbon(57328)

Question 416045: If the graph of f is decreasing on [0,infinity), then what can be said about the graph of y = f(-x) + 1? the graph of y = - f(x) - 1?
Click here to see answer by stanbon(57328)

Question 416229: How do I solve this system by substitution?
-2y=-x-7
4x+2y=22
Click here to see answer by mananth(12270)

Question 416233: Solve the given system of equations:
3x - y = 5
-9x + 3y = 15
Click here to see answer by mananth(12270)

Question 416280: What is the equation of the line containing the point (-2,-4) and parallel to the line 2x-3y=2?
I tried this: M=2 y--4=2(x+2) y+4=2x+4 y=2x
But when I tried to check my work it did not come out right
Click here to see answer by sudhanshu_kmr(1152)

Question 416285: I am suppose to solve the following solution of the following system of linear equations by graphing. It asks that I give the solution in an ordered pair.
4x-3y=15
-3y=-4x+15, I divided all by -3 and came up w/ y=4/3x+5, my ordered pair is (0,5) & (3,4)
the second equation is: x+y=2 (I had more problems w/ this one) my answer is y=-1x+2, my ordered pair is (0,2) & (-1,-1). When I graphed them they came out not quite parallel, but not touching.

Click here to see answer by Alan3354(30993)

Question 416978: solve using the elimination method calculator -4y + 8y = 56; 2x - 3y = -21
Click here to see answer by MathLover1(6628)

Question 417449: Solve the following systems of equations
x+7y=5 (1)
x=6-7y (2)
Click here to see answer by sudhanshu_kmr(1152)

Question 417453: solve the system of equations by graphing. Then classify the system as consistant or inconsistant and as dependant or independant
5x-7y=-35
7y-5x=35
what is the solution to the system of equations?
a)infintately many solutions?
b)A point?
c) No solution?
Is this consistant?
is this dependant?
Click here to see answer by sudhanshu_kmr(1152)

Question 417450: The equation y=1777x+27153 can be used to predict the number of gun deaths in the united states x years after 2000 that is,x=0 corresponds to 2000 x=2 corresponds to 2002,x=6 corresponds to 2006 and so on. Predict the number of gun deaths in 2006 and 2008. In what year will the number of gun deaths be 9383?
The predicted gun deaths in 2006?
The predicted gun deaths in 2008?
The predicted number of gun deaths will be 9383 in the year?
Click here to see answer by ewatrrr(10682)

Question 417643: how would i solve the problem
y=2x
y-x=1
Click here to see answer by stanbon(57328)

Question 417643: how would i solve the problem
y=2x
y-x=1
Click here to see answer by MathLover1(6628)

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