119 articles trouvés pour ce sujet.
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Two equations with fractions |
2020-10-22 |
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mia pose la question :
I am supposed to look for x and y. my teacher didn't explain very well.
please help : ((
2x - y = 5
x/4 + y/3= 2
Penny Nom lui répond. |
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Simultaneous equations |
2020-09-05 |
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Paa pose la question :
a+b=8
a+c=13
b+d=8
c-d=6
find the value of each letter
Penny Nom lui répond. |
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The substitution method |
2020-06-10 |
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Hardebolar pose la question :
simultaneous equation by substitution method
.a-b=2/3
a+b=1 2/3
p lui répond. |
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A linear system |
2020-04-02 |
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Dadzie pose la question :
x+s=8→1
y+x=13→2
y-p=6→3
s+p=8→4
Penny Nom lui répond. |
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Simultaneous equations |
2019-10-16 |
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deepak pose la question :
This is too complicated please help me
8/x - 10/y = 1 and x+y=9
Penny Nom lui répond. |
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Two power generators |
2019-06-07 |
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A student pose la question :
At 100% efficiency two generators would produce 750 MW of power. At efficiencies of 65% and 75%, they produce 530 MW. At 100% efficiency, what power would each produce?
Harley Weston lui répond. |
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Two linear equations with a fraction |
2019-04-26 |
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Asha pose la question :
2x=-3y …1
x-2+-4/3(y+1) ...2
note: … is equation
Harley Weston lui répond. |
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Simultaneous equations with fractions |
2018-12-14 |
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zaheer pose la question :
solve simultaneous equations and give answer in fractional form
3x - 2 = 4y +5/3
y + 7 = 2x + 4
would really appreciate some help on this please
Penny Nom lui répond. |
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Simultaneous equations with fractions |
2017-09-09 |
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Farah pose la question :
Hi, my name is Farah. I hope you can help me with this question . X/2 + g/5= 3 and 2g - f = 10
Penny Nom lui répond. |
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Catherine, Molly and Tom |
2017-07-19 |
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liezel pose la question :
what is the answer of this problem, If Catherine and molly has 320pesos altogether, Molly and tom have 360 in all. Tom and Catherine have 240pesos altogether.How much does each of them have?
Penny Nom lui répond. |
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Simultaneous equations with fractions |
2017-06-02 |
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Jamal pose la question :
1/x + 1/y =5 and 1/y - 1/x =-1
Penny Nom lui répond. |
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Five equations |
2017-01-16 |
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Muhammed pose la question :
A x 4 = E
B ÷ 4 = E
C + 4 = E
D - 4 = E
___________
& A + B + C + D = 100
what is the value of E
Penny Nom lui répond. |
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Simultaneous equations with fractions |
2016-12-21 |
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Kimi pose la question :
I am stuck on this,can someone please help me????
1/2x+1/3y=11
8x+2/5y=102
Can someone please explain how to solve questions like these??
Or else I will never learn...
Thank you
Penny Nom lui répond. |
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Simultaneous equations |
2016-11-25 |
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Rohan pose la question :
x-2/3 + y - 1/4 = 13/12
2-x/2 + 3 + y/3 = 11/6
Penny Nom lui répond. |
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Two equations with fractions |
2016-07-22 |
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kanesh pose la question :
p/2+q/3=3
p/4+2q/3=3
Penny Nom lui répond. |
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Simultaneous equations |
2016-06-25 |
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sena pose la question :
2x/3+3y/2=-1
4x-5y=22
simultaneous equation
Penny Nom lui répond. |
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A pair of equations with fractions |
2016-05-11 |
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tiya pose la question :
hello, i want to know how to solve this question.
m/6+2n/3=6
-m/10=2n/5=2
Penny Nom lui répond. |
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Solve for x and y |
2016-02-27 |
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ntshidi pose la question :
Y=1/2x+4and1/4x-6
Penny Nom lui répond. |
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Two equations in two unknowns |
2016-02-13 |
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Anumba pose la question :
4x + 2y = 4
7x - y = -11
Penny Nom lui répond. |
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A system of linear equations |
2016-01-24 |
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kareem pose la question :
my name is kareem
and i am a student i have a math puzzle and i tried to solved it but it always have same mistake
x-y=9
x+z=12
z-n=14
y+n=2
Penny Nom lui répond. |
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Two transport companies |
2016-01-06 |
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Brynleigh pose la question :
The Sugar Sweet Company will choose from two companies to transport its sugar
to market. The first company charges $5096 to rent trucks plus an additional fee of
$200.75 for each ton of sugar. The second company charges $5500
to rent trucks plus an additional fee of $175.50 for each ton of sugar.
For what amount of sugar do the two companies charge the same?
What is the cost when the two companies charge the same?
Penny Nom lui répond. |
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Constructing simultaneous linear equations |
2015-12-28 |
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Deborah pose la question :
Linda thinks of a two-digit number. The sum of the digits is 8. If she reverses the digits, the new number is 36 greater than her original number. What was Linda's original number?
Thank you!
Penny Nom lui répond. |
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Linear equations in two variables |
2015-12-13 |
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priya pose la question :
I have problem in solving these equations please help me today itself very urgent:
I)2x+y=y
II)pie*x+y=9
Penny Nom lui répond. |
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The method of elimination |
2015-05-01 |
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oreanna pose la question :
Question from oreanna, a student:
How do u solve 2x+9y=3
7x-4y=-25 in elimination
Penny Nom lui répond. |
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Two equations with fractions |
2015-02-26 |
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Pulane pose la question :
Hi math centre I've been trying to solve these equations for days now please help
(6/x)-(1/y)=4
(9/x)+1=(-2/y)
Please help me solve them simultaneously
Thank you
Penny Nom lui répond. |
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Two equations |
2015-02-16 |
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nigel pose la question :
2x+1/2y=1
6x-3/2y=21
Penny Nom lui répond. |
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1999 equations in 1999 unknowns |
2014-11-28 |
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Subrahmanya pose la question :
Solve the following system of 1999 equations in 1999 unknowns :
x1+x2+x3=0, x2+x3+x4=0……., x1997+x1998+x1999=0,
x1998+x1999+x1=0, x1999+x1+x2=0.
(in x1,x2,...................,x1999 the numbers 1,2,.............,1999 are subscripts)
Penny Nom lui répond. |
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A linear system |
2014-10-14 |
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pheter pose la question :
4/x - 1/y = 3 .... equation (1)
6/x - 2/y = 5 .... equation (2)
Penny Nom lui répond. |
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Two equations in x and y |
2014-09-25 |
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seyilogo pose la question :
solve y=2x - 3 and (4x - 2y) / x + y = 1 simultaneously
Harley Weston lui répond. |
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Two equations in two variables |
2014-09-18 |
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Susan pose la question :
(28x + 36y) - [20000 - .75(28x + 36y) + 60000] = 5000
x + y = 10000
solving two equations involving variables
Penny Nom lui répond. |
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The method of elimination |
2014-07-05 |
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leo pose la question :
please explain how can i solve this problem
3x-6y=-38
6x-9y=44
using elimination and simultaneous method thank you :)
Penny Nom lui répond. |
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Simultaneous equations |
2014-06-20 |
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rana pose la question :
solve the simultaneous equations
a)3x=7y
12y=5x-1
Penny Nom lui répond. |
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Simultaneous equations with fractions |
2014-04-19 |
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Maryam pose la question :
I looked at your example of simultaneous equations with fractions and applied it to my question from an educate exam papers but I couldn't get it to work. The question is:
x/8 - y = -5/2
3x + y/3 = 13
Penny Nom lui répond. |
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A system of equations |
2013-08-13 |
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Nina pose la question :
3x-2y=8
-x+3y=5
What is the solution of the system of equations
Penny Nom lui répond. |
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4 linear equations with 3 unknowns |
2013-04-12 |
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Marian pose la question :
how to solve for 3 unknowns in 4 simultaneous equations
Penny Nom lui répond. |
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Row echelon form |
2012-09-05 |
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Jennifer pose la question :
Hello, my name is Jennifer. I am a 12th grader in Pre-Calculus and I was wondering if you may help me with Row Echelon Form.
x + 2y - 3z = -5
-2x - 4y - 6z = 10
3x + 7y - 2z = -13
Penny Nom lui répond. |
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John's electronic store |
2012-07-25 |
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Jora pose la question :
Electronic Store
John opened an electronic store in December. During his first month,
He sold 10 LCD TVs and 20 Plasma TVs. His income during that
month was $12800. In January, he sold 25 LCD TVs and 40 Plasma
TVs for an income of $27600.
In February he projects to sell 30 LCD TVs and 50 Plasma TVs.
If John expenses are $28900 in February, how much money will he
have after paying the expenses?
Penny Nom lui répond. |
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Four apples and two oranges cost Rs. 30... |
2012-01-13 |
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nasr pose la question :
Four apples and two oranges cost Rs. 30, and one apple and 3 oranges costs Rs.15.How much does each apple and each oranges cost?
Harley Weston lui répond. |
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Augmented matrix |
2011-12-14 |
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Britney pose la question :
Write Augmented matrix and use row reduction to solve.
I need major help with this problem! Tomorrow is my semester test and I have no idea how to do this.
2x+5y=8
y-x=10
Robert Dawson lui répond. |
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Linear equations |
2011-10-06 |
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Hannah pose la question :
I am confused about a question on my homework, here is an example on what I need to do:
You own a sightseeing boat tour. Kids' admission costs $5, adults' admission costs $8.
During that day you get (made-up number) $521 with 71 admissions.
How many of each passenger boarded?
I tried something like
5x + 8y = 521
x + y = 71
But, I still don't understand how to solve it! Help?
Penny Nom lui répond. |
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What is the speed of each car? |
2010-11-04 |
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Jennifer pose la question :
two cars are 420 miles apart and traveling towards each other along the same road. They meet in 3.5 hours. One car is traveling 15mph slower than the other. What is the speed of each car?
This must be solved using a system of equation, I have no idea?
Stephen La Rocque lui répond. |
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A linear system |
2010-10-15 |
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Sandy pose la question :
HARD!! algebra (Linear Systems) question?
An Airplane cruises at 120km/h in still air. One day, when the wind was blowing steady from the west, the airplane travelled west (flying into the wind) and landed at its desination after 1.5h. The airplane's return trip (flying with the wind) was only 1.0 h long. On both legs, the airplane travelled at its cruising speed. (meausred with respect to the air surrounding the airplane).
Part A
Write a System of equations that would allow you to determine the speed of the wind blowing that day and the distance travelled each way
Part B
When solving the system of equations graphically, what equations would you enter into the equation editior (to make graphs on your calculator)
Part C
Indicate what the X and the Y represent
Stephen La Rocque lui répond. |
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x/a +y /b =a+b : x/a^2+ y/b^2 =2 |
2010-05-30 |
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smithu pose la question :
x/a +y /b =a+b : x/a2+ y/b2 =2 solve by using elimination method ,
cross multiplication, substitution method
Penny Nom lui répond. |
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A system of equations |
2010-03-30 |
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samantha pose la question :
the equations of two lines are 6x-y=4 and y=4x +2.what is the value of x in the solution for this system of equations?
Penny Nom lui répond. |
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The sides of a 30-60-90 triangle |
2010-03-29 |
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maris pose la question :
Find the sides of a 30-60-90 triangle whose perimeter is 6. The solution must use systems of equations using 3 variables.
Penny Nom lui répond. |
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A quadratic equation |
2010-03-15 |
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rachelle pose la question :
under certain condition, it is found that the cost of operating an automobile as a
function of speed is approximated by a quadratic equation. use the data shown
below to find the function. then use the function to determine the cost of operating
the automobile at 60mph.
speed
(in miles per hour) |
operating cost
per mile(in cents) |
| 10 |
22 |
| 20 |
20 |
| 50 |
20 |
Penny Nom lui répond. |
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Substitution method |
2010-02-17 |
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Melodie pose la question :
7x - 4y = -10
4y= x-2
Tyler Wood lui répond. |
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Substitution |
2010-02-14 |
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Izayah pose la question :
what is 3 ways to find the meeting point of y=2x+4 and 3x+y=7
by making 2 table and using a graph
Stephen La Rocque lui répond. |
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A word problem |
2009-10-24 |
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Ryan pose la question :
Two times one number plus 7 times another number is equal to 17. the first number plus the second number is equal to 25. What are the two numbers? Please Help!
Penny Nom lui répond. |
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A linear system |
2009-10-20 |
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marissa pose la question :
Solve this linear system
2x-y=5
3x+y=-9
Penny Nom lui répond. |
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$6.25 in nickels quaters and dimes |
2009-10-10 |
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miriam pose la question :
a piggy bank contains $ 6.25 in nickles quaters and dimes.
there are 65 coins all together and there are four times as many nickles as quaters
find the number of coins of each kind
Penny Nom lui répond. |
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Two rectangles |
2009-10-08 |
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Lillian pose la question :
A rectangle is 5cm longer than twice its width.
The width of another rectangle is 3cm less
than the width of the first rectangle and its length is 6cm more than 3 times its
width. If the perimeters are equal, find the dimensions of both rectangles
Penny Nom lui répond. |
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Elimination method |
2009-10-08 |
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Kenty pose la question :
How do I solve this problem using the elimination method?
3x-7y=0
6x+4y=0
I am not sure how so if someone can show me a similar problem (instead of
solving this one for me) that would be fantastic.
Penny Nom lui répond. |
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Two equations in two unknowns |
2009-07-30 |
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Alicia pose la question :
I need help with the following equation please show me the steps to complete so that I will know how to do this my self.
2x-y=2 5x+y=5 Thanks for the help
Penny Nom lui répond. |
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Two equations |
2009-05-31 |
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tony pose la question :
y = 1.2x - 32.7,
y = -0.7x + 46.15
can you please solve this for me? i am not able to figure it out... thank you
tony
Penny Nom lui répond. |
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Two equations |
2009-05-18 |
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Bob pose la question :
solve the system:
x/2 - 2y= -8
3x + 2/3y= -10
Stephen La Rocque lui répond. |
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An infinite number of solutions |
2009-03-24 |
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Sean pose la question :
this is a linear equations problem;
first:
3535.5 + Fbd (.866) + Fbc (.5) - Fab (.5) = 0
and
-3535.5 - Fab (.866) - Fbc (.5) - Fbd (.5) = 0
Harley Weston lui répond. |
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A linear system |
2009-03-13 |
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Rasanga pose la question :
Use the row echelon form of the augmented matrix to solve the following linear system.
X1+2X2+X4=6
X3+6X4=7
X5=1
Harley Weston lui répond. |
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Linear systems |
2009-02-20 |
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Rose pose la question :
I have been having trouble trying to figure out these three math problems , I need help breaking them down so I could understand them better please help.
1. x = 7 - x
2 x - y + 8
2. 8 x + 5 y = 1 8 4
x - y = 3
3. y + 2 x = 3
y + 2 x = 4
I can't figure out how to break them down in the right order.
Penny Nom lui répond. |
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A linear system |
2008-10-22 |
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Tiffany pose la question :
solve:
x + y + z = 4
2x - 3y - z = 1
4x + y - 2z = 16
Penny Nom lui répond. |
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Two equations in two unknowns |
2008-10-17 |
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Dushayne pose la question :
Please help me in solving this problem:
a. 3x-4y=32
5x+2y=10
b. 2x+3y=11
4x+3y=10
Penny Nom lui répond. |
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Using the augmented matrix |
2008-10-17 |
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Karlena pose la question :
I am supposed to write the augmented matrix of the system and use the matrix method to solve the system. I must show my work algebraically
x+y+2z=30
2x+3y+2z=53
x+2y+3z=47
Harley Weston lui répond. |
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The vertices of a triangle |
2008-09-27 |
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T. pose la question :
how do you find the coordinates of the vertices of the triangle with the sides determined by the graphs of the following equations:4x+3y+1=0,4x-3y-17=0,4x-9y+13=0?
Harley Weston lui répond. |
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A word problem with three numbers |
2008-09-02 |
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Wanda pose la question :
"Jabari is thinking of three numbers. The greatest number is twice as big as the least number. The middle number is three more than the least number. The sum of the three numbers is 75. Find the numbers."
Victoria West lui répond. |
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Two equations in two unknowns |
2008-08-01 |
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James pose la question :
Question from james, a student:
3x+2y=9;24x-2y=18
My math teacher says that it is (2,-4)
Can someone please explain how to figure this out by graphing?
Victoria West lui répond. |
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Simultaneous equations |
2008-07-23 |
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Franco pose la question :
Solve
3 D + E - F = -10
-2 D - F = -4
-3 D - 4 E - F = -25
Franco
Penny Nom lui répond. |
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A rectangular room |
2008-06-30 |
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Peter pose la question :
A rectangular room has a perimeter of 42 feet and an area of 108 square feet. What is the length, in feet, of the shorter side?
Penny Nom lui répond. |
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How old are the sisters? |
2008-05-11 |
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George pose la question :
Theresa is four years older than her younger sister Joni. Twelve years ago, she was twice as old as her sister.
Find the present age of the two siblings.
Penny Nom lui répond. |
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A linear system |
2008-03-10 |
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sandhiya pose la question :
one group of people purchased 10 hotdogs and 5 soft drinks at a cost of
$12.50. a second group bought 7 hotdogs and 4 soft drinks a ta cost of $9.00
find the cost of a single hot and a single soft drink.(using the row echelon form to solve)
Penny Nom lui répond. |
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Simultaneous equations |
2008-02-29 |
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CONOR pose la question :
I was wondering if you could help me with this problem
7x - 5y = -1
3y = 4x
Penny Nom lui répond. |
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A inear system |
2008-02-03 |
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Kelly pose la question :
is (-1,5) a solution of each system? y=-x+4 y=-1/5x
Penny Nom lui répond. |
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Two equations in x and y |
2008-02-01 |
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leslie pose la question :
6x+8y=40 4x+5y=25
Penny Nom lui répond. |
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A linear system |
2008-01-22 |
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Lisa pose la question :
I am supposed to use augmented matrices to solve this system of equations. x - 3y = 5; 4x - 12y = 13. I think it is unsolvable but I want to be sure I am not just giving up. Thanks in advance for your help! Lisa.
Stephen La Rocque and Brennan Yaremko lui répond. |
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Linear systems |
2008-01-10 |
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Sandra pose la question :
I have two questions. Please solve both. Thank you.
1.) In your chemistry class, you have a bottle of 5% boric acid solution and a bottle of 2% boric acid solution. You need 60 milliliters of a 3% boric acid for an experiment. How much of each solution do you need to mix them together?
2.) You plant a 14-inch hemlock tree in your backyard that grows at a rate of 4 inches per year and an 8 inch blue spruce that grows at a rate of 6 inches per year. In how many years after you plant the trees will the trees be the same height? How tall will each tree be?
Thank you. I did not understand neither problem, so I could not show any work. Please help.
Stephen La Rocque and Harley Weston lui répond. |
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Donuts and bagels for the first period class |
2008-01-08 |
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Karen pose la question :
Mr. Pace bought breakfast for his first period class. Ten donuts and fifteen bagels
cost a total of $15.75. Mrs. Pace bought breakfast for her class. Five donuts and twenty
bagels cost a total of $17.00. Set up and solve a system of linear equations to determine the cost
of one donut and one bagel.
Penny Nom lui répond. |
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What is the speed of the plane in still air? |
2008-01-05 |
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oscar pose la question :
A plane flies 400 miles with the wind and 340 miles against the wind
in the same length of time. If the speed of the wind is 24mph, what is
the speed of the plane in still air?
Penny Nom lui répond. |
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An augmented matrix |
2007-11-29 |
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Beth pose la question :
I am having troubles fiinding this augnmented matrix. I know how to do it
but everytime i do it it get a different answer and its not the right answer.
Could you help me to make sure I do it right?
Here is the problem:
4x - 3y = 5
2x +9y = 6
Harley Weston lui répond. |
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Two equations in two unknowns |
2007-09-22 |
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Mary pose la question :
Having problems doing this problem, looking for a solution with the work. I would like to see how you got your answer, to see what I was doing wrong.
solve using the substitution method, is there "no solution" or "infinitely many solutions"
4x+y=4
2x+8y=0
Stephen La Rocque and Leeanne Boehm lui répond. |
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A nonlinear system |
2007-08-14 |
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Marsia pose la question :
Explain how the solution of a nonlinear system could be just a point, or two points. Sketching these may make it easier
Penny Nom lui répond. |
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Linear systems and inverses |
2007-08-06 |
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Marsia pose la question :
explain how inverses are used to solve linear systems.
Penny Nom lui répond. |
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A linear system |
2007-06-29 |
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Kim pose la question :
solve for x,y,z
x-y+z=4
2x+2y-z=-2
x-2y+2z=7
Harley Weston lui répond. |
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The substitution method |
2007-06-23 |
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mary pose la question :
solve the system by the method of substitution:
-5x+2y=-15
4x-y=9
Stephen La Rocque lui répond. |
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A system of linear equations |
2007-06-14 |
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Alfredo pose la question :
A student club sponsored a jazz concert and charged $3 admission for students, $5 for faculty, and $8 for the general public. The total ticket sales amounted to $2542.
Three times as many students bought tickets as faculty. The general public bought twice as many tickets as did the students. Set up the equations that determine how many
tickets were sold to each group and solve.
Stephen La Rocque and Penny Nom lui répond. |
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What happens when you have zero's on both sides? |
2007-06-05 |
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Lily pose la question :
On the substitution method what happens when you have zero's on both
sides of the equation? Is that considered no solution or infinitely many?
Stephen La Rocque and Penny Nom lui répond. |
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The substitution method |
2007-05-08 |
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A student pose la question :
I need help on these two problems( substitution method)
-2x+7y=10
x-3y= -3
and
6x-8y= -12
-3x+4y=9
Penny Nom lui répond. |
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The vertices of a triangle |
2007-05-02 |
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natakie pose la question :
Find the coordinate of the vertices of a triangle whose sides lie on the following three lines.
2x+5y-16=0, 4x-3y-6=0 and 3x+y+2=0
Penny Nom lui répond. |
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Two equations |
2007-04-29 |
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lavon pose la question :
I'm having trouble figuring out a linear equation, can you help?
- 3x + 2y = 8
3x + 2y = 8
Penny Nom lui répond. |
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A linear system |
2007-04-25 |
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Tee pose la question :
2x -y =5
2x +=y =5
and also
3/7x + 5/9y =27 (fractions)
I have to find the addition method to both problems
Penny Nom lui répond. |
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No solution to a linear system |
2007-04-09 |
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Ryan pose la question :
When is it possible to get no solution when solving a linear system?
Leeanne Boehm, Steve La Rocque, Penny Nom and Melanie Tyrer lui répond. |
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A linear system |
2007-03-23 |
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Adam pose la question :
Solve the system by graphing:
4y>6x
-3x+2y<-6
Stephen La Rocque and Penny Nom lui répond. |
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Simultaneous equations with fractions |
2007-02-28 |
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Alyca pose la question :
Hello Math Central, I am a grade 10 student taking Academic math. Our unit right now is method of substitution and elimination. I'm stuck on this one question that I've been doing forever. Please help =)
*For this equation I have to do method of elimination, but it's so much harder with fractions...could some one please explain to me how to do it step by step?*
x y 2
-- - -- = - --
3 6 3
x y 1
-- - -- = 1---
12 4 2
Steve La Rocque and Ashley Mang lui répond. |
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An augmented matrix |
2007-02-13 |
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Mary pose la question :
I've been trying for quite some time now to figure this out. I have to solve this by using the Gauss-Jordan Method: 3x - y = 15 2x + 3y = 10 Can anyone help me?
Penny Nom and Gabriel Potter lui répond. |
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Patrick's new job |
2007-02-02 |
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kathy pose la question :
patrick has been offered jobs by two different automobile repair shops. his income from the first shop will be $1,200 per month plus 3% of the monthly sales. the second shop will pay patrick $1,500 per month plus 2% of the monthly sales. part a let s equal the amount of monthly sales and i equal patrick's income in dollars. write a system of two equations that could be used to determine the monthly income from either shop. part b solve the equation to determine what amount of monthly sales for each shop would result in patrick earning the same monthly income, i, from both shops
Penny Nom lui répond. |
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The substitution method |
2007-01-31 |
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Victoria pose la question :
how do i solve this problem using the substitution method?
2x-5= -14
-7x+14y= -5
Stephen La Rocque lui répond. |
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The elimination method |
2007-01-31 |
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Addrianna pose la question :
x-2y=2
3x-5y=7
Stephen La Rocque lui répond. |
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Points of intersection |
2007-01-18 |
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Mark pose la question :
Find the points of intersection of the given pair of curves. 2x - 3y = -8 and 3x - 5y = -13
Steve La Rocque and Haley Ess lui répond. |
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A linear system |
2007-01-04 |
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Harold pose la question :
System A (4, 2/3)
2x-3y=6 and x-3y=2
I approached this problem using the addition method.
Could i have found the answer using the graphing method?
Penny Nom lui répond. |
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Linear systems |
2006-09-21 |
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Alexander pose la question :
Hello, i have a math assignment due tonight at midnight and i need some help please
It is using the addition method to solve linear systems
Penny lui répond. |
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Three people go to a store where there is a sale |
2006-05-30 |
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Geocee pose la question :
Three people go to a store where there is a sale. One person buys two shirts, one pair of pants and one sweater. The second person buys one shirt, two pairs of pants and two sweaters. The third person buys three shirts and four pairs of pants. Find the price of each item if the first person spent $155 and the second and third person spent $235 each.
Stephen La Rocque lui répond. |
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2x+3y=0 and 3x-y=0 |
2006-03-14 |
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Lisa pose la question :
my name is lisa I am doing math for work and i have a math problem to solve and i need help with it here is the question 2x+3y=0 and 3x-y=0 this is one question can you help me please
Penny Nom lui répond. |
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Simultaneous Equations |
2005-12-21 |
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Matt pose la question :
I have these two equations,
336 = 60a + 10b
and
432 = 84a + 6b
Am I right in saying both a and b are 4.8?
Penny Nom lui répond. |
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Solving a pair of equations |
2005-11-10 |
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Steven pose la question :
what is answer to
2 x + y = 1
y = -1/3 x - 4
Penny Nom lui répond. |
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The substitution method |
2005-06-28 |
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Addie pose la question :
how do i know where to began the substitution method? how do i solve
y = x + 1
2x - y = 1
Penny Nom lui répond. |
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Two equations in two unknowns |
2003-02-06 |
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Patrick pose la question :
What are all ordered pairs of real numbers (x, y) for which: yx2 - 7x + 12 = 1 and x + y = 6?
Penny Nom lui répond. |
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The intersection of conics |
2002-12-19 |
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Glenda pose la question :
We are studying systems of equations where two conic sections are the two equations that we are solving simultaneously. We were studying the number of solutions that are possible if you have an ellipse and a parabola. We all agree that there can be none, one, two, three or four solutions. The question that the students had for me was whether or not a portion of an ellipse and a parabola can overlap and thereby allow an infinite number of solutions. What should I tell them?
Chris Fisher and Harley Weston lui répond. |
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x + y=80 and x + z=100 |
2002-11-28 |
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PJ pose la question :
x + y=80
x + z=100 can you solve for x, y or z?
Penny Nom lui répond. |
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The substitution method |
2002-11-15 |
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A student pose la question :
Solve by using the substitution method. x = 3y - 1
x + 2y = 9
Penny Nom lui répond. |
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Determining a parabola |
2002-11-06 |
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Shelley pose la question :
let (0,3) and (1,9)and (-1,1) be given points in a parablola. Determine a b and c
Penny Nom lui répond. |
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The substitution method |
2002-02-24 |
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Joe pose la question :
whats the answer to this question? 3x+y=11
x+2y=-3 its substitution method i am having alot of trouble figuring it out. send the answer as soon as possible. thank you
Penny Nom lui répond. |
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Simultaneous equations |
2001-12-17 |
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Matthew pose la question :
4x + y = 4
2x - 3y = 5 what is x and y
Penny Nom lui répond. |
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Two equations in two unknowns |
2001-12-04 |
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Courtney pose la question :
y = 3x + 2
y = 4x - 5
solve for x
Penny Nom lui répond. |
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Matrix |
2001-11-21 |
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Hoda pose la question :
I have a question about matrix multiplication; well, actually, matrix division. I am assuming that matrices are divided the same as they are multiplied; that is, row by column. But what happens if you have to divide by zero? How does this affect the resulting matrix?
Patrick Maidorn and Penny Nom lui répond. |
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Common solution |
2001-06-02 |
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Samantha pose la question :
- Solve for common solution: x+y=6 2x-3y=2
- Solve for y in terms of x: 3x-y=4
Penny Nom lui répond. |
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Matrices |
2001-03-26 |
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Peg pose la question :
What are some applications of matrices, basic trigonometry, and linear systems in the real world? I'm writing and Algebra report about where these topics are used outside of the classroom.
Judi McDonald and Walter Whiteley lui répond. |
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Systems of equations |
2001-03-16 |
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joy pose la question :
How do u solve problems using systems of equations?
~ finding x and y~ ex:
26 = 3x - 2y
42 = 4x + y
Penny Nom lui répond. |
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The substitution method |
2001-03-05 |
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A student pose la question :
Solve each system of equations by the substitution method. Show your work. - y = 8
7x = 1 - y
- y = x - 1
4x - y = 19
Penny Nom lui répond. |
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Solving Equations |
2001-02-23 |
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Stephanie pose la question :
Do you know who came up with solving equations?
Do you have any web-sites that can give me good information on solving equations?
Do you know any history on solving equations?
Do you know what solving equations is used for?
And finally............Sorry about all of the questions :)
Has the form of solving equations changed from the time it came out to now?
Juci McDonald lui répond. |
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Linear systems of equations |
1998-11-16 |
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Crystal Girvan pose la question :
My name is Crystal Girvan.Im in grade 11. I have a question.We are solving linear systems of equations: comparison method. My questions is. it says a)use the method of comparison to solve this system a=b-1, 3a+ b=3 b) verify your solutin in a I dont understand it. please help
Jack LeSage lui répond. |
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A Linear System |
1998-10-08 |
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Jason Bussey pose la question :
The linear systems with the following pattern all have the same solution. Is their some kind of reasoning as to why this is so? 2x+3y=4
3x+4y=5 4x+5y=6
5x+6y=7 The solution is always x=-1, y=2 Thank you
Jason
Penny Nom lui répond. |
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