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

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Question 639854: Find an equation of the line that satisfies the given conditions.
Through
(−6, 9);
parallel to the line
x = 7
Click here to see answer by richwmiller(17219)

Question 640044: Solve: √x-6 + √x = 6 (x-6 is all under the square root)
Click here to see answer by Edwin McCravy(20056)

Question 640044: Solve: √x-6 + √x = 6 (x-6 is all under the square root)
Click here to see answer by solver91311(24713)

Question 640094: A College student has set aside $240 for the rest of the school year to us the coin-operated laundry facility in his dorm. Each time he uses the machines, it costs $7.50. Chose the equation that represents the amount in his fund, F, after he has done laundry x times. Find the amount remaining in the fund after 12 trips to the laundry facility.
A) f = 240-7.50x; $90.00
B) f = 240-7.50x; $150
C) f = 7.50-240x; $150
D) f = 7.50-240x; $90.00
My Answer : B. f = 240-7.50x; $150
Click here to see answer by solver91311(24713)

Question 641213: literal equation of a trapezoid A=1/2(a+b)h solve for b pls????

Click here to see answer by tag22man(4)

Question 641195: 10x + 3y = 8
2x + y = 2

Click here to see answer by JellyBeans(8)

Question 641351: Hi, my name is Will and I am having a hard time solving systems of linear equations particularly this problem:
3x+2y=2
-2x+y=8
Click here to see answer by MathLover1(20850)

Question 641351: Hi, my name is Will and I am having a hard time solving systems of linear equations particularly this problem:
3x+2y=2
-2x+y=8
Click here to see answer by MathTherapy(10552)

Question 641504: Solve using the elimination method. Show your work. If the system has no solution or an infinite number solution state this.
8x + 10y = 92
24x + 11y + 162
Click here to see answer by stanbon(75887)

Question 641842: 20-[4+8y-4(y+3)]=-3(5y-6)-[9(y-1)-14y+11]
i keep on getting -8
Click here to see answer by jim_thompson5910(35256)

Question 641863: I need help with a linear equation that has a division sign in it. It looks like this: (4x+2)/2 = 3x-5. I have forgotten the process to solve it so please help me.
Click here to see answer by stanbon(75887)

Question 641901: hi I can't remeber exactly how to do this problem.
Solve using substitution method:
15x-10y=1
5y=-1+10x
I tried this:
5/y=-1+10/5
then (5)15x-(5)10(5)(-1+10x/5)=1(5)
75x-50(-1+10x)=5
75x+50-500x=5
425x=45
it just dosen't look right
Click here to see answer by jim_thompson5910(35256)

Question 642091: solve the following systems of linear equations using any algebraic method. please show work and check your solution if possible. Thank you
1) 2x+5y=3
x-3y=7

Click here to see answer by solver91311(24713)

Question 642153: a line has a slop of 4/5 and passes through (1,3). What is the slope-intercept form of the equation of this line?
Click here to see answer by lwsshak3(11628)

Question 642310: I am trying to find the break analysis which I know how to do. I just need to solve for x but right now I have this equation:
-2x^2 + 300x = 7200 + 60x
How do I get rid of the exponent -2x^2 so I can have an answer that is
x=?
Click here to see answer by MathLover1(20850)

Question 642309: Solve for the variable in each equation. show all your work. CHECK each answer.
1. 2x+5x=210

Click here to see answer by solver91311(24713)

Question 642309: Solve for the variable in each equation. show all your work. CHECK each answer.
1. 2x+5x=210

Click here to see answer by lynnlo(4176)

Question 642499: x+6=2x+5
Click here to see answer by jim_thompson5910(35256)

Question 642507: 1/2x-7=11-1/2x
Click here to see answer by jim_thompson5910(35256)

Question 642486: please help me with this question
1over2times H=10
HELP WITH THIS TODAY

Click here to see answer by Alan3354(69443)

Question 643138: how do i solve
x = 7 - 10y
10x - 4y = 18
using the substitution method
Click here to see answer by Alan3354(69443)

Question 643438: solve 3a+b+c=7 a+3b-c 2a-1=b
Click here to see answer by Edwin McCravy(20056)

Question 643407: i am supposed to take a test for college that has linear equations such as c+(4-3c)-2=0 that was on a practice test they gave to me i do not remember how to solve this and i have looked up how to solve it and cannot figure it out based on what i found please just explain how to solve problems like this so i can do my best at the test thank you very much
Click here to see answer by Theo(13342)

Question 643525: Solve the system of equations below
4x+y+16
2x+3y+-2
Click here to see answer by Alan3354(69443)

Question 643653: If x=16 and y=6 what is the answer to 3x+y ?
Click here to see answer by MathLover1(20850)

Question 643763: y=5x-6
Click here to see answer by Alan3354(69443)

Question 643764: y=x^3
Click here to see answer by Alan3354(69443)

Question 643834: hello,
I am having trouble finiding the lcd for this equation. Id appreciate the help on this problem but also tips on how to find it in problems like this.
thank you, carla
x/(2x+2)=-2x/(4x+4)+(2x-3)/(x-4)
so far i know i have to get the lcd for 2x+2,4x+4 and x-4 but since there was that -4 im at a loss, thank you
Click here to see answer by Alan3354(69443)

Question 643846: Solve the equation 4x^2y+5y=2x for y as a function of x.
Im stumped
Click here to see answer by jim_thompson5910(35256)

Question 643732: how do I solve for y: 3x+y=3
Click here to see answer by kekegeter (97)

Question 644181: There are 20 animals in the farm consisting of cows and chickens. If there are 56 legs in all, how many cows are there?
Click here to see answer by lynnlo(4176)

Question 644182: A cetain factory employs 60 workers. If four out of five workers are married, how many married workers are employed by the factory?
Click here to see answer by lynnlo(4176)

Question 644307: how do you solve 1-5 using the substitution method.
1. 4x+3y=11
x=3y-1
2. 2x+3y=5
x=4-2y
3. 3x-2y=11
y=5-2x
4. x+y=-5
4x-2y=10
5. y=2x-1
y=2-x
Click here to see answer by unlockmath(1688)

Question 644341: Can you help me answer this?
F(x)=, if x<=(less than or equal to)-1
, if x>-1
The question is: Evaluate the function for the given value of X.
f(-2) is the value of X.
Im not sure of this is System of Equations but i think its very close to it.
Click here to see answer by jim_thompson5910(35256)

Question 644369: solve the equation 4[p-2-(4+2p)] = -1 for P
Click here to see answer by jim_thompson5910(35256)

Question 644633: I need to use the method of substitution to solve these linear equations.
3x-y=3
7x-2y=11
Click here to see answer by jim_thompson5910(35256)

Question 644688: 3x+4y=2
5x+9y=1
Click here to see answer by reviewermath(1029)

Question 644694: Use the method of substation to solve the system of linear equations
6a=6-b
6a=3-b

Click here to see answer by MathLover1(20850)

Question 644693: use the method of substitution to solve the system of linear equations.
2x-y=4
5x-2y=11
what is the solution (should be an ordered pair)
Click here to see answer by MathLover1(20850)

Question 644845: May You Give Me An example of how to simplify 5-3x+y+10x+3y+6
Click here to see answer by MathLover1(20850)

Question 645073: The line passes through the point (7,9) but has no slope.
Click here to see answer by stanbon(75887)

Question 645151: I keep getting fractions and decimals when my teacher said the answers were whole/real numbers. but the problem is:
2w-x+5y+z=-3
3w+2x+2y-6z=-32
w+3x+3y-z=-47
5w-2x-3y+3z=49
find w,x,y,and z.
Click here to see answer by jim_thompson5910(35256)

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