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

Tutors Answer Your Questions about Linear-systems (FREE)

Question 751835: 5x-7y=11
3x=2y
Click here to see answer by malglu(21)

Question 751585: 2l+2w=228 L=w+42 How do you find the length(L) and width(w)?

Click here to see answer by Cromlix(353)

Question 751585: 2l+2w=228 L=w+42 How do you find the length(L) and width(w)?

Click here to see answer by stanbon(57377)

Question 750913: y=2x,y-2x=0

Click here to see answer by jim_thompson5910(28595)

Question 750913: y=2x,y-2x=0

Click here to see answer by Alan3354(30993)

Question 750822: Solve the system of equations. Enter your answer as an ordered pair.
5x - y = 27
5x + 4y = 42
Answer:

Click here to see answer by stanbon(57377)

Question 750732: how do I solve this equation?
-0.3(x-6)+ x = 0.5(3-x)
Click here to see answer by rfer(12662)

Question 750418: does 3x+7y=8 and 21y=-9x+24 have one solution, no solution or infinitly many solutions

Click here to see answer by tommyt3rd(606)

Question 750418: does 3x+7y=8 and 21y=-9x+24 have one solution, no solution or infinitly many solutions

Click here to see answer by MathLover1(6634)

Question 750415: does 4x-3y=6 and 8x=6y+10 have one solution, no solution, or infinitley many solutions
Click here to see answer by Alan3354(30993)

Question 750317: 6X+8y=10
26x+48y=2
sir/mam, how to find the value of x and y....pls rply with full explaination..what isthe basic thing need to do for solving linear equation..pls rply.....am very poor in mathematics..
Click here to see answer by kibauu(33)

Question 750119: Which of the coordinate pairs below is a solution to the following system of equations?
x2 + y2 = 18
5x + y = 17
Click here to see answer by Alan3354(30993)

Question 750104: The cost of 2 bagels and 2 cans of juice is $4.40. The cost of 3 bagels and 4 cans of juice is $7.80
a. write a system f equations to represent this situation.
b. Solve the system of equations by substitution. Explain what the solution means.
Click here to see answer by JoeTaxpayer(135)

Question 750045: If you rent a car for 4 days, your bill will be $44. If you rent the same car for 10 days, your bill will be $100. Write an equation for the cost of the rental.
Click here to see answer by tommyt3rd(606)

Question 749526: a rectangle has an area of 126 units ^2 and a perimeter of 46 units. Find the dimensions
Click here to see answer by Alan3354(30993)

Question 749517: How do you workout the problem x^2+9y^2=9
-2x+1y=-3 by elimination method
Click here to see answer by Alan3354(30993)

Question 749346: Solve 9x-3y=9, x+3y+11
Click here to see answer by tommyt3rd(606)

Question 749059: if a+a+a=15 and is smiplified as 3a.what would h+h+h+h be?
Click here to see answer by MathLover1(6634)

Question 748673: What is the equation of the line that passes through (5, -2) and (-3, 4)?
Click here to see answer by MathLover1(6634)

Question 748605: Solve the following system of equations.

5x - y = 7
2 + x = 7y
Click here to see answer by Cromlix(353)

Question 748492: two sums of y=x
y=-3x-8
I know on a linear graph they meet at co-ordinates (-2,-2)
ive been asked to solve the two above sums usng eliminaton and subsitution method for simultanious linear equations I have spent all day trying to work it out ad just cant grasp it could you help please
Click here to see answer by nilan(15)

Question 748164: is 9x+3y=12; 27x+9y=40 parallel, perpendicular, or neither?
Click here to see answer by tommyt3rd(606)

Question 748164: is 9x+3y=12; 27x+9y=40 parallel, perpendicular, or neither?
Click here to see answer by Cromlix(353)

Question 747617:
the length of a rectangle is twice its width if the length decreases by 6cm and the width increases by 5 cm the rectangle becomes a square find the area of the rectangle
Click here to see answer by checkley79(3050)

Question 747292: Please help me solve this equation?
A family refers to a group of two or more people related by birth, marriage, or adoption who reside together. In 2000, in Country A, the average family net worth was $240,000 and there were about 8.6 times 10^7 families. Calculate the total family net worth in Country A in 2000.
Country A's total family net worth is __ dollars
( use scientific notation. Use the multiplication symbol in the math palette as needed, Round to the nearest tenth as needed. )
Click here to see answer by rothauserc(210)

Question 747338: Solve by substitution.
X+3Y=15
2x-3y=3
Click here to see answer by timvanswearingen(106)

Question 747338: Solve by substitution.
X+3Y=15
2x-3y=3
Click here to see answer by lynnlo(4164)

Question 747337: Solve by substitution.
3x-5y=4
y=4-2x
Click here to see answer by jim_thompson5910(28595)

Question 747335: What is the main disadvantage to graphing a system of equations?
Click here to see answer by tommyt3rd(606)

Question 747296: Will you please help me solve this equation? :)
simplify.
(8y)^-2= __ ( Use positive exponents only.)
Click here to see answer by tommyt3rd(606)

Question 747298: Please help me solve this equation?
Multiply and write the answer without exponents. ( the x's are actually standing for multiplication instead of a dot.)
(2 x 10^6) x(3 x 10^4)
=__
Click here to see answer by tommyt3rd(606)

Question 747258: Help me solve this equation please.
Simplify the expression
8x^3(3x^2+5y)=__ simplify your answer
Click here to see answer by Cromlix(353)

Question 747255: Help me solve this equation please.
Simplify the expression. Assume that all variables represent nonzero numbers.
6p^3 times 3p^5 = __
Click here to see answer by josmiceli(9691)

Question 746857: Find the solution to the system of equations given below by using linear combination:
8x + 4y = 48
4x – 2y = 40
A. (8, -4)
B.(11, 2)
C.(-8, 24)
D. (8, 4)

Click here to see answer by checkley79(3050)

Question 746901: how do you work it all out? how do you do the steps? how to solve it?
Click here to see answer by Alan3354(30993)

Question 745912: Sove graphicallt the system of Linear Equations: x+3y=11,3x+2y=12

Click here to see answer by stanbon(57377)

Question 745505: Please solve this system completely and show all work. Solve for x, y, and z.
x + 2y + z = 7
3x - y + z = -12
4x + 3y -2z = 9
Click here to see answer by sachi(392)

Question 745343: x= adult tickets y= children tickets
5x + 3y = 134
x + y = 32
whats true about this equation?
a.) More adults attended the reunion than children
b.) six more children attended that adults
c.) nineteen children attended the reunion
d.) three more adults attended than children
i didnt know how i would solve this?
Click here to see answer by mananth(12270)

Question 745204: Please help me solve this equation:
1/2x+3y=5/6
1/3x-5y=16/9
Click here to see answer by rothauserc(210)

Question 744909: Solve the following system of linear equations using either the substitution method or the addition method:
1. 2x+y=5
2. 4x+3y=14
Please help and show me the steps so I can learn. Thank you.
Click here to see answer by rothauserc(210)

Question 744436: Please help me solve this equation.
An investor invested a total of $1,800 in two mutual funds. One fund earned 9% profit while the other earned 3% profit. If the investor's total profit was $84, how much was invested in each mutual fund?

The amount invested in the mutual fund is earned 9% was $ ___
The amount invested in teh mutual fund that earned 3% was $___
Click here to see answer by rothauserc(210)

Question 744432: Please help me solve this equation.
Use the elimination method to solve the system of equations
a+7b=7
a+2b=-3
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. There is one solution, it is __ ( simplify your answer. Type an ordered pair)
B. There are infinitely many solutions.
C. There is no solution.
Click here to see answer by Alan3354(30993)

Question 744363: I just need help doing system of equations... my teacher is telling me how but i just dont get how he gets all kinds of different #'s

Click here to see answer by stanbon(57377)

Question 743980: 1. Which of the following is closest to one of the solutions of the equation x^2 + 6x - 11 = 0
a. –3
b. –1
c. 0
d. 2
2. How many real solutions does the equation x^2 + 4x - n^2 = 0 have?
a. none
b. one
c. two
d. cannot be determined
3. How many real solutions does the equation x^2 + bx + 4 = 0 have if b > 0?
a. none
b. one
c. two
d. cannot be determined

Click here to see answer by solver91311(16897)

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