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

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Question 387754: A labourer is engaged for 20 days on the condition that he will receive Rs 60 for each day he works and will be fined Rs 5 for each day he is absent. If receives Rs 745 in all, for how many days did he remain absent?
Click here to see answer by Earlsdon(6294)

Question 387815: solve the lnear equatin by using elimnation
x+5y=28
-x-2y=-13
Click here to see answer by Alan3354(69443)

Question 387887: solve the system x-y-5z+-13
4x+2y+2z=6
3x-2y+2z=24
Click here to see answer by Alan3354(69443)

Question 387839: How would i find a b and c if a+b=13, b+c=16 and a+b=19.
Click here to see answer by rfadrogane(214)

Question 387912: what is the slope of 4x=7y=16
Click here to see answer by stanbon(75887)

Question 387912: what is the slope of 4x=7y=16
Click here to see answer by rfadrogane(214)

Question 387981: solve by the substitution method.
2x - 7y=15
5x + 45=y
Click here to see answer by jsmallt9(3758)

Question 388095: 3x=x+18

Click here to see answer by learningalgebra13(2)

Question 388139: What are the solutions for x,y, and z in the following equations:
x-y+9z=-27
2x-4y-z=-1
3x=6y-3z=27

Click here to see answer by Fombitz(32388)

Question 388226: TO SOLVE FOR THE TRHEE UNKNOWNS X,Y,Z FROM
Z=4*(X+Y)
Z=2*X*Y
Click here to see answer by Fombitz(32388)

Question 387820: What is the percentof change formula?
Click here to see answer by Fombitz(32388)

Question 388335: Solve by the elimination method
2r-5s=-33
5r+2s=48
I think the answer is that there is no solution but I am not sure. Please someone help me to solve this
Click here to see answer by jim_thompson5910(35256)

Question 388475: Find the value of |1 2 -1||3 -2 1||0 1 -3|
A. 26
B. 22
C. -16
D. 20
Thank you so much!!!
Click here to see answer by Alan3354(69443)

Question 388478: Find the inverse of [3 1][-4 1], if it exists.
A. does not exist
B. 1/7[1 3][4 -1]
C. 1/7[1 -1][4 3]
D. 1/7[-3 -4][1 -1]
Thank you so much!!!
God Bless and Happy Holidays!!!!
Click here to see answer by Jk22(389)

Question 388489: Which is the graph of the system: y<=0, x<=0, x>=y, x+y>=-4
Click here to see answer by Fombitz(32388)

Question 388492: Find the maximum and minimum values of f(x,y)=2y+x for the polygonal convex set determined by this system of inequalities. x>=1, y>=0, x<=4-y
A. minimum: 1; maximum: 4
B. minimum: 0; maximum: 5
C. minimum: 1; maximum: 7
D. minimum: 4; maximum: 8
Click here to see answer by Fombitz(32388)

Question 388474: Find DE if D=[-2 4 6][5 -7 1]and E=[1 -2][0 4][-3 4]
A. [-20 44][8 -42]
B. [-2 -10][0 -28][-18 -4]
C. [-20 8][44 -42]
D. [-2 0 -18][-10 -28 -4]
Thank you for your help!!!
God Bless and Happy Holidays!!!
Click here to see answer by Jk22(389)

Question 388129: 3 squares with the first square's side length is 4 units, the next one to the right has side length of x units and the next square to the right has side length of 9 units. there is a straight line which's coordinates lies on the topleft vertices of each 3 squares.
=> what is the side length of the middle square?

Click here to see answer by CharlesG2(834)

Question 388539: I need help with the equation 3c +4m = 12.5
Please show how you found the answer. Thank you
Click here to see answer by Alan3354(69443)

Question 388577: Ques. 20
Referring to the graph, write the equation of the horizontal line through the point (3,0).
Figure located at this link:
http://ppstest2.com/images2/AL5005.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388575: Ques.19
Referring to the figure, write the equation of the horizontal line through the point (0,3).
Figure located at this link:

http://ppstest2.com/images2/AL5005.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388571: Ques 16.
Write an equation in point-slope form of the line that passes through the points (-5,-4) and (7,-5).
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*

Click here to see answer by solver91311(24713)

Question 388570: Ques.14
Write an equation of a line that is perpendicular to y = 2x + 3 and passes through (3,4).
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*

Click here to see answer by solver91311(24713)

Question 388567: Ques. 13
Write an equation in slope-intercept form of the line that passes
through the points (-2,-1) and (3,5).
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388563: Ques. 12
Write an equation in slope-intercept form of the line that passes through the points (-4,2) and (1,-1).
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388561: Quest.11
Write an equation of the line that is parallel to the given line
y = 2x + 3 and the given point (-4,1).
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*

Click here to see answer by solver91311(24713)

Question 388560: Quest 10.
Write an equation of the line that is parallel to the given line y = x + 3 and the given point (5,0).
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388579: Ques.22
Referring to the graph, write the equation of the vertical line through the point (3,0).
Figure located at this link:
http://ppstest2.com/images2/AL5005.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388578: Referring to the graph, write the equation of the vertical line through the point (0,3).
Figure located at this link:
http://ppstest2.com/images2/AL5005.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388580: Ques.23
Referring to the figure, write the equation of the horizontal line through the point (-1,0).
Figure located at this link:
http://ppstest2.com/images2/AL5006.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388581: Referring to the graph, write the equation of the horizontal line through the point (0,2).
Figure located at this link:
http://ppstest2.com/images2/AL5006.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Click here to see answer by solver91311(24713)

Question 388582: Referring to the graph, write the equation of the vertical line through the point (-1,0).
Figure located at this link:
http://ppstest2.com/images2/AL5006.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*
Jim Thompson HELP willing to $$, Check ur email!

Click here to see answer by solver91311(24713)

Question 388583: Ques 26.
Referring to the graph, write the equation of the vertical line through the point (0,2).
Figure located at this link:
http://ppstest2.com/images2/AL5006.jpg
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*

Click here to see answer by solver91311(24713)

Question 388587: Ques 7.
A music store is selling compact disks for $11.50 and $7.50. You buy
12 disks and spend a total of $110. How many compact disks that cost
$11.50 did you buy?

I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*

Click here to see answer by texttutoring(324)

Question 388586: Use the substitution method to solve the linear system given. Express the answer as an ordered pair of the form (x,y)
x + y = 5
2x + y = 6
I need these answers to be as straightforward as possible. No shown work is needed. *Thank you for all simply put answers*

Click here to see answer by texttutoring(324)

Question 388668: A rectangle is to be drawn with perimeter 64cm. if the length is to be 14cm more than the width, determine the area of the rectangle
Click here to see answer by jim_thompson5910(35256)

Question 388694: metro concerts can rent a truck for either $55 with unlimited mileage or $29 plus 40 cents per mile.For what mileages would the unlimited mileage plan save money?
Click here to see answer by mananth(16946)

Question 388710: A farmer keeps hens and rabbits on his farm. One day, he counted a total of 70 heads and 196 legs. How many more hens than rabbits does he have?
Click here to see answer by Edwin McCravy(20056)

Question 388761: 3*x + 5 - x > 6 + 4*x - 1
Click here to see answer by Alan3354(69443)

Question 388771: how do you write the equation (direct variation) if you are given an ordered pair?
Click here to see answer by stanbon(75887)

Question 388833: determine if the equation is linear: x^2-4=y
Click here to see answer by stanbon(75887)

Question 388874: A shopkeeper bought some eggs at 15 cents each. Six of them were broken while the rest were sold at 20 cents each. If she made a profit of $4.80, find how many eggs she bought.
Click here to see answer by haileytucki(390)

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