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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 497726: 0.6(5x-5)<2.4(x+4)
Click here to see answer by lwsshak3(6472)

Question 497759: 7x+y=9
5x-y=15
eliminate
Click here to see answer by Alan3354(30983)

Question 497960: I am having problems with systems of linear equations and would like some help explain how to do it. My teacher has not taken the time to help me and i am asking if you will please. Once i got it down i wont need any more help. Thank You
- Emily Wright
Click here to see answer by josmiceli(9661)

Question 498173: Solve the stem of linear equations. What is the x and y answer to this problem?
y - 2x = 0
6y + 2x = 0
Click here to see answer by mananth(12270)

Question 498172: Solve the stem of linear equations. What is the x and y answer to this problem?
2x + y = 4
x - y = 2

Click here to see answer by mananth(12270)

Question 498592: Formulate a system of equations for the situation below and solve.
A manufacturer of women's blouses makes three types of blouses: sleeveless, short-sleeve, and long-sleeve. The time (in minutes) required by each department to produce a dozen blouses of each type is shown in the following table.
Sleeveless Short-sleeve Long-sleeve
Cutting 9 12 15
Sewing 22 24 28
Packaging 6 8 8

The cutting, sewing, and packaging departments have available a maximum of 93, 188, and 56 labor-hours, respectively, per day. How many dozens of each type of blouse can be produced each day if the plant is operated at full capacity?
sleeveless _______dozen
short-sleeve _______dozen
long-sleeve _______ dozen

Click here to see answer by solver91311(16868)

Question 498627: When solving a linear equation in one variable, the objective is to isolate the variable on one side of the equation. What does that mean? Give an example.
Click here to see answer by rfer(12647)

Question 498750: i need help with this equation. i really dont understand. it is a-(-328)=930
Click here to see answer by Maths68(1474)

Question 499275: Find the value of b that makes the system of equations have the solution (3, 5).
y = 3x – 4
y = bx + 2
Click here to see answer by John10(245)

Question 499319: Please help me understand Cramer's rule. My system is 3x+2y=6;2x+2y=8.
Click here to see answer by jim_thompson5910(28504)

Question 499430: Solve the system of equations using addition to eliminate one variable.
3x-2y=14
3x+5y= -14
I do not know how to do this. I worked it out like the book showed but nothing comes out with my check. Please help me on this.
Click here to see answer by chessace(471)

Question 499454: how to solve by substitution 4x+y=11;2x+5y=1
Click here to see answer by oberobic(2304)

Question 499709: How do you find x,y,and z in the following equation?
5x-2y+4z=0
5x-4y-3z=-21
x-y+5z=0
Click here to see answer by Edwin McCravy(8882)

Question 499851: is this the same as the section as
Applications of Linear Systems?
Ex: A motel clerk counts his $1 and $10 bills at the end of the day. He finds that he has a total of 74 bills having a combined monetary value of $326. Find the number of bills of each denomination that he has.
let x= the number of $1 bills the clerk has, and y= the number of $10 bills he has
He has 74 bills altogether, so one equation is x+y=74. To find the second equation, the dollar amount in $1 bills plus the dollar amount in $10 bills is $326, so 1x+10y=326.
Click here to see answer by rfer(12647)

Question 499999: Graph the linear equation -x+y=2 and find the slope and Y intercept?
Click here to see answer by oberobic(2304)

Question 500068: 2m+n=12
m-9n=25
find the substitution method
Click here to see answer by rfer(12647)

Question 500172: Find an equation of the line that satisfies the given conditions.
Through
(−8, −8);
perpendicular to the line passing through
(−5, 4) and (−1, 2)

Click here to see answer by mananth(12270)

Question 500191: hello, i am having a hard time understanding how to solve this word problem. Could you show me a way of answering this problem? please and thank you
a merchant increases the wholesale cost of a washing machine by 30% to determine the selling price. If the washer sells for $588.90, find the wholesale cost.
Click here to see answer by Maths68(1474)

Question 500497: 7b2 +8 + 3b2
Click here to see answer by chessace(471)

Question 500500: what is the slope of the line whose equation is 4x-8y=20
Click here to see answer by chessace(471)

Question 500768: how do you find the ordered pair in the following system of equations:
2x+7y=-7
-4x-3y=-19
Click here to see answer by oberobic(2304)

Question 501062: How do i classify the linear system stated here : {x+4=y
{5y=5x+35
Can you help me by telling me what to do? I get lost .. I figured it out until the point of : 5y=(-5x-20)+35 ? I don't know the next step .. Help would be much appreciated .. Thanks :)
Click here to see answer by ptaylor(2048)

Question 501651: 3x-y=12
11y-2x=5
Click here to see answer by mananth(12270)

Question 501687: the sum of the digits of a two digit number is 12, if the digits are reversed, the new number is 18 more than the original number. what is the original number?
Click here to see answer by mananth(12270)

Question 501758: By graphing method.
1. y= 5x-2
y= -x +4
Can u answer thesee.? PLeaseeeee..
Click here to see answer by Alan3354(30983)

Question 501679: if 18 is added to a two digit number, the digits are reversed. the sum of two digits is 8. what is the original number.
Click here to see answer by htmentor(788)

Question 501602: Solve the following system (if possible) and place your answer below:
3/x - 2/y = -30
2/x - 3/y = -30
Click here to see answer by ankor@dixie-net.com(15638)

Question 502862: Find three consecutive integers such that the sum of the largest and 5 times the smallest is -244?

Click here to see answer by mananth(12270)

Question 502898: One equation in a linear system is x+2y=4. Write another equation so that the system has the unique solution (-2,3)
Click here to see answer by Fombitz(13828)

Question 502971: Please help me solve this.
Is this system dependent or independent?
x + 2y + z = 4
3x - 4y + z = 4
6x - 8y + 2z = 8
Click here to see answer by jrb1965(16)

Question 503208: Solve the system, using elimination.
3x+2y=17
4x-2y=4
Click here to see answer by Alan3354(30983)

Question 503571: how do you solve problems with an varible in the answer? ex: 4x+9=7x or 4x+9=7X+3
Click here to see answer by xdragonfight(116)

Question 503708: find equation of each line, write in slope interept and standard form (if possible).
1. through (-7,2) and perpendicular to y=2x ???
i got confused on how to find slope if i dont have a "b" for that y=2x equation??
AND ALSO...
2. through (-2,3) and (6,1)
AND ALSO...
3. how do you graph inequalities on a ti86 calculator? shading and all?
Click here to see answer by oberobic(2304)

Question 503867: Savannah and her soccer team of 18 players are invited to the womans national game in Toronto. There are 72 seats available. Every regular priced ticket is valued at $150.00 each. However, Savannah's mother was friends with the box office guy, and received a discount of 25% off.What was the total amount of money saved(in $)?
My question:
What are two let statements, and 2 equations that represent this word problem?
Click here to see answer by stanbon(57246)

Question 503937: elination method to solve this linear euation: 3x+7y=1
2x+9y=5
Click here to see answer by oberobic(2304)

Question 504265: solve and check
x/2+x/3=5
how do i find x??
Click here to see answer by mananth(12270)

Question 504229: how do you do the elimination method for this question
The school that Stefan goes to is selling tickets to a choral performance. On the first day of ticket sales
the school sold 3 senior citizen tickets and 1 child ticket for a total of $38. The school took in $52 on
the second day by selling 3 senior citizen tickets and 2 child tickets. Find the price of a senior citizen
ticket and the price of a child ticket.

Click here to see answer by ankor@dixie-net.com(15638)

Question 504335: -4(2v-4)+8v=6+2(3v-3)
Click here to see answer by jim_thompson5910(28504)

Question 504388: 2x+4y+16=0
I need this equation in slope-intercept form
Click here to see answer by mananth(12270)

Question 504497: I need your help about the applications of System of Linear Equations. This is the problem:
The sum of the digits of a two digit number is 10. If the digits are reversed, the new number is 18 less than the original number. Find the original number.

-thank you.
I'm having a hard time finding the right equation to use so please help me. :)
Click here to see answer by htmentor(788)

Question 504623: Hi I know how to solve systems of equations, but I'm having trouble setting this one up. It is a word problem.
AMC Homes, Inc is planning to build three and four bedroom homes. Consumer demand indicates a need for three times as many four-bedroom homes as for three-bedroom homes. The net profit from each three-bedroom is $16,000 and $17,000 for each four bedroom. If the total net profit is $13.4 million how many homes of each type should they build?
Thanks for any help you might have :)
Click here to see answer by stanbon(57246)

Question 504909: Write a system of two linear equations that has .
a) only one solution ,(5,1).
b) an infinite number of solutions .
c) no solution.

Click here to see answer by emargo19(101)

Question 505034: -4x -y+2 (x-3y) ; x=3 , y=-2
Click here to see answer by oberobic(2304)

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