# solve by the substitution method: 8m+n=47 m-5n=52 thank you having trouble completing please show all work so I can learn better

65,119 results-
## algebra

solve by the substitution method: 8m+n=47 m-5n=52 thank you having trouble completing please show all work so I can learn better

*asked by Barbara on July 26, 2011* -
## Math - Algebra

A. Solve the following quadratic equations. Make sure to show all your work. Do not use any method (e.g. factoring, completing the square, quadratic formula, graphing) more than twice. Use the graphing method at least once. 1. 3x+2 + 11x -20 =0 2. x2 + 3x

*asked by Angela Again! on January 9, 2007* -
## Pre - CALCULUS

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0

*asked by Ciara on April 13, 2015* -
## pre - CALCULUS

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0

*asked by Ciara on April 13, 2015* -
## Substitution Method-Plz help

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 solve for x in the second equation. x= y+2 Put that in for x in the first equation: x+y=-4 (y+2) + y = -4 solve for y. Then, x= y+2 i don't get it.How did you get that?What

*asked by Svetlana on October 17, 2006* -
## Algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x + 4y = -36 4x + 4y = 12

*asked by gina on July 5, 2011* -
## Algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x + 4y = -36 4x + 4y = 12

*asked by toni on July 3, 2011* -
## algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 4x + 4y = -36 4x + 4y = 12

*asked by tom on July 6, 2011* -
## Algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this: 4x + 4y = -36, 4x + 4y = 12

*asked by Tammy on July 1, 2011* -
## math

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 8y + 2x = 48 2x = 4y – 12

*asked by Taina on June 20, 2011* -
## algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. x + 10y = 41 x + 9y = 37

*asked by Joel on February 22, 2011* -
## Intermediate Algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. -3x + y = 4 x + 3y = 22 Here's what I came up with (where did I go wrong) -3x + y = 4 y = 4 - 3x -3x + (4-3x) = 4 -3x + 1x =

*asked by Jordyn on October 11, 2010* -
## Algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. x + 10y = 41 x + 9y = 37

*asked by Betty on February 21, 2011* -
## Algebra PLEASE HELP!!

What advantages does the method of substitution have over graphing for solving systems of equations? Choose the correct answer below. A. Graphing cannot be used to solve dependent or inconsistent systems due to the nature of the lines involved.

*asked by zwgz123 on December 15, 2017* -
## Pre-Calculus

Solve the system by the substitution method. Show your work. 2y - x = 5 x2 + y2 - 25 = 0 I solved the problem but I got it wrong for some reason..can you solve it step by step?

*asked by Liz on June 2, 2016* -
## algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x – 15y = -12 3x + 24y = -12

*asked by Linda on November 14, 2011* -
## Algebra 1

Okay. So I am completely lost with this... Any help would be great! 3. Solve the system using any method – graphing, substitution, or linear combination. Make sure to show your work. 2x + 5y= 8 x + 3y= 2

*asked by Miranda on January 10, 2013* -
## algebra

Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 18x + 6y = 78 12x + 54y = -48

*asked by Anonymous on February 21, 2012* -
## Linear Equations

Can you please help solve this equation using the substitution method? I have tried and keep getting that X and Y = 7/2, but the answer in the book states no solution, inconsistent system. What am I doing wrong? Please help! Solve the systems of equations

*asked by Mia on March 2, 2010* -
## Algebra 1

bobpursey, In this problem you helped me with earlier: Solve using any appropriate method. y = 2× - 5, y = ½× + 1 Substitution, substitute for y. 2×-5=½ × + 1 3/2 x=6 x=4 y= 2*4-5=3 How did you choose which method you were going to use between

*asked by slomo on January 3, 2015* -
## algebra 1

use the substitution method to solve the linear system. 9x+6y=3 3x-7y=-26 please show me an example of how to do it.

*asked by aneme on February 12, 2008* -
## math

Can someone please check my work? Solve using substitution method 1. 3x+2y=12 x=52-6y answer:-40.8 I am pretty sure that one is wrong. Solve using elimination method 2. 2r-7s=-31 7r+2s=24 answer: (230/53,-468/53) 3.3x+4y=3 6x+8y=6 answer: No answer.

*asked by deedee on January 6, 2009* -
## Algebra

Solve: 3x-2y=10 2x+3y=-2 Graph: Substitution: Elimination: Show Your work! (I can'tfigure out how to graph it and when i used substitution and elimination it came out with two different anwsers. I got (13/3.5,19/10.5) for substitution, and ((0.2,-0.8) for

*asked by Darryl on January 17, 2011* -
## Algebra II

Solve the given system by using a substitution method 9x-2y=3 3x-6=y If you could show the steps because I have 10 problems for homework and I just need an example Thanks

*asked by JessieLynn on February 4, 2011* -
## Algebra

How do you solve an equation with a fraction like x^(2/3) +13=17. I don't think the quadratic formula would work for this method, and neither would completing the square. What should I do?

*asked by Leyla on November 23, 2009* -
## Math-Algebra

Solve: 3x-2y=10 2x+3y=-2 Graph: Substitution: Elimination: Show Your work! (I can'tfigure out how to graph it and when i used substitution and elimination it came out with two different anwsers. I need help! and i need to be able to show my work!)

*asked by Darryl on January 17, 2011* -
## math

solve by completing the square x^2-3x=4 please show work

*asked by timothy on December 9, 2012* -
## Algebra

I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain your reasoning.

*asked by Charly on June 2, 2011* -
## Algebra

I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain your reasoning.

*asked by Charly on June 2, 2011* -
## math

solve each of the following equations by completing the square and show ur work x²-4x=32

*asked by Derek on September 7, 2008* -
## math

solve each of the following equations by completing the square and show your work x² + 6x + 24=0

*asked by Derek on September 7, 2008* -
## Math

17) solve this linear system using the method of substitution. 2y-x=-10 y= -3/2x-1 20) simplify then solve by substitution 2(x-4)+y=6 3x-2(y-3)=13 just need help with these 2.

*asked by Ma names Jeff on February 27, 2016* -
## algebra 1

Solve each linear system by substitution method. x+2y=7 2x+4y=8 I'm getting stuck. Could some one explain the work out process and what the outcome means?

*asked by Chica on January 24, 2010* -
## precalculus

can you check my work? Solve the system of equations at the right by the method of substitution. Verify your results by using a graphing utility. x^2+y^2-4x+6y-5=0, x+y+5=0 x=-y-5 (-y-5)^2+y^2-4(-y-5)^2+6y-5=0 y=√5-5, y=-5-√5 x+√5-5+5=0 x=-√5

*asked by Anonymous on December 14, 2016* -
## Algebra

solve by substitution. Please show all work. -6x+5y=1 6x+4y=10

*asked by Braxston on August 14, 2014* -
## math ALGEBRA

Solve by either the substitution method or the addition or subtraction method 2m=n-3 3m=2n-9 Just replace n with (2m + 3) in the second equation. Then solve for m. Once you know the value of m, use either of your equations, such as n = 2m+3, to get n.

*asked by DANIELLE on December 21, 2006* -
## Algebra

using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x + 24y = 24 27x – 15y = -15

*asked by Miguel on March 23, 2011* -
## subsitution method

Can some one show me how to use the Substitution method to solve the system of these equations. x + y = -4 x - y = 2 x + y = 10 y = x + 8 on the first set. Solve for either x or y in either equation, then put that value into the other equation. Example: x

*asked by mike on July 1, 2007* -
## Algebra

Solve the system of equations using substitution. x + 4y = -5 3x - 8y = 45 When I tried to solve it, I got x=-17 and y=-3. When I plugged these into the first equation, it didn't work out at all. Could someone please show me the steps so I can see where I

*asked by Cassie on February 27, 2009* -
## College Math II

Solve by any method. x(x + 1) = 12 I am not sure what method to use to show my work and figure out the answer. Can someone help me understand this problem. Thanks.

*asked by Lori on November 21, 2009* -
## math

use the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this 3x + 24y = 24s,27x – 15y = -15 .

*asked by carol on May 2, 2011* -
## ALGEBRA 1!PLZ HELP!

Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve the first equation for y. y = 2x-5 Substitute that for y in the second equation and solve for x. Then use the value of x to substitute back into the first equation

*asked by SANDRO! on November 6, 2006* -
## Algebra

I am confused on how solve this substitution problem 4y+3=3y+x 2x+4y=18 If you can, show work please (:

*asked by Stephanie on February 22, 2013* -
## MATH

Useing substitution/elimination method what is the solution set to 2x+y=1 x^2=y+2 a)(-3,7) and (1,-1) b)(3,7) and (-1,-1) c)(-3,-7) and (1,1) d)(3,-7) and (-1,1) I've really no educated guess so PLEASE HELP! You can make an educated guess by substituting

*asked by Anonymous on January 16, 2007* -
## algebra

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

*asked by Anonymous on November 11, 2009* -
## math

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

*asked by Amanda on November 11, 2009* -
## math

Solve by elimination method. 2r-5s=-33 5r+2s=48 Solve by substitution method. 5x+6y=5 x-9y=40 I always get these two confused... can someone please help me with these two problems?? I would really appreciate it..

*asked by Amanda on November 11, 2009* -
## algebra

Solve by substitution method 3x+8y=17 2x+y=14 please show step by step so i can understand better. I keep getting it wrong at the end.

*asked by tara lee on August 1, 2011* -
## Math need by 9pm cst

Solve by substitution method. Show step by step process. 4x+5y=27 x=26-4y

*asked by SAP on September 30, 2010* -
## algebra HELP PLEEEEASE

Solve the following system using elimination or substitution. show your work. y = x^2 - 2x - 6 y = 4x + 10 Please explain how to do this and the answer! THANKS!

*asked by help plesze on April 23, 2017* -
## Math

Solve the quadratic function y=2x^2-14x -16 by completing the square. Round roots to the nearest hundredth, if necessary. Show your work.

*asked by Alex on October 30, 2014* -
## algebra

Requesting help. (I must reckon, that X is a variable, and y is y-intercept) Q: Try to use the substitution method to solve the the linear system y=3x an y=3x-7. What do you notice? A) What happens when you graph it? B) Explain why there is no solution.

*asked by Michael on October 6, 2008* -
## Pre-Calc

Solve the system of equations using either the substitution method or the multiplication/addition method answer: 3x+2y=14 2x-4y=4

*asked by Anonymous on September 27, 2014* -
## Algebra II

How do you solve the linear equations x+y=5 3x-y=3 by use of the Substitution Method? (Please do not confuse with the Elimination Method)

*asked by Ashley on February 24, 2009* -
## Substitution Method

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 x + y = -4 x - y = 2 In the second equation, x= y+2 Putting that in the first.. (y+2) + y= -4 subtract two from each side, then divide each side by two to get y. Then, put

*asked by Margie on October 16, 2006* -
## College Algebra

Solve for elimination method,substitution method and cramer's rule for 8x - 4y + 2z =16

*asked by MJ on September 1, 2016* -
## Math

How do I solve these problems, I really need help. Solve by substitution method 6x+5y=17 x=53-8y Solve by elimination method 2x+3y=5 4x+6y=10

*asked by Amy on October 17, 2008* -
## Algebra 1 HELP PLZ!!!

Use the Substitution method to solve the system of equations. x + y = -4 x - y = 2 PLz HELP!! I'M NOT BOB BUT I CAN HELP ITS REALLY SIMPLE ALGEBRA X + Y = -4......EQN 1 X - Y = 2.....EQN 2 From EQN 2, let x = 2 + y Substitute that into EQN 1 x - y = -4

*asked by Margie on November 2, 2006* -
## Algebra

Solve this system of linear equations. * Used the substitution method 3x - y = 8 4x - y = -15 ----------------------------------------- WORK y = 3x - 8 4x - (3x - 8 ) = -15 4x - 3x + 8 = -15 x + 8 = -15 x = -7 3x - y = 8 3(-7) - y = 8 -21 - y = 8 -y = 29 y

*asked by Lucina on January 20, 2015* -
## Math please help!!

Solve the system using substitution. y = -2x + 5 3y = -x - 5 I already got the answer, just wanna make sure it's correct. Please show work as well.

*asked by Melanie on February 28, 2011* -
## How do I do this.?(Math.)

Use the Substitution method to solve the system of equations. y - 2x = -5 3y - x = 5 Solve one of the equations for x or y. Let's solve the first one for y: y - 2x = -5 y = 2x - 5 Now let's substitute 2x - 5 for y in the second equation to solve for x:

*asked by Margie on February 5, 2007* -
## Math

1. Explain the advantages and disadvantages of both the substitution method and the elimination method for solving a system. Help please. The only reasons I can think of is because in substitution it might be more difficult cause there's a possibility of

*asked by Amanda on February 18, 2008* -
## Math

I need help,my example: The sales representative say there are two floor plans available 56 total houses. Use x for floor plan 1 and y for floor plan 2 then write an equation that illistrates the situation. So I thought x+y=56, then sales rep. says there

*asked by dee on November 27, 2009* -
## Completing the square

Please show the procedure for answering this quadratic equation using the completing the square method: x^2+14x+98 I think i understand the basics of the method, but in this particular question I'm finding it hard to use the appropriate factors of 98 - 7

*asked by Barbie on May 20, 2011* -
## Math

Hi I'm having a bit of trouble if anyone is able to help, thanks! Using the substitution u =1-2t^2, show that A = -1/4 ∫_1^(-7)▒e^u du

*asked by Simon on March 21, 2015* -
## Algebra 2

Solve Quadratic System x^2+y^2=2 x^2-6y=10 Please SHOW WORK I'm having trouble

*asked by Mesa on November 23, 2014* -
## Algebra

1,Sovle using the substitution method. Show your work. If the system has no solution or an infinite number of solutions,state this. -x - 3y = -20 5x + 3y =40 2 Sovle using the elimination method. Show your work. If the system has no solution or an infinite

*asked by Destiny on September 18, 2011* -
## math

Solve using the algebraic method. x+5=15 SHOW WORK thanx subtract five from each side. Do you have an allergy to showing work?

*asked by lida on March 29, 2007* -
## Algebra Question

I did a problem and used the substitution method and it took me forever to solve by hand. Is there a shorter way to show how this problem was done. The problem was x+y+z=7,x-y+2z=7,2x+y+3z=15 The final answer came out to be x=4 z=2 y=1

*asked by mike on December 18, 2009* -
## Substitution Method in Algebra!HELP PLZ!

Use the Substitution method to solve the system of equations. 3x + y = 5 4x - 7y = -10 multiply first equation by 4 multiply second equation by 3 thus both equations have same x or y value in this case it is the x value. 12x + 4y = 20 12x - 21y = -30 solve

*asked by Matthew on November 5, 2006* -
## math

Solve by substitution method 9x+6y=21-9x+y=35 What is the solution of the method?

*asked by micheal on June 16, 2009* -
## Algebra

I have four problems I'm having trouble with. I need to solve the equations by completing the square. 1) w^2 - 5w = 11/4 2) z^2 + 11z = -21/4 3) k^2 - 8k - 7 = 0 4) v^2 - 7v + 1 = 0

*asked by Mary on April 17, 2013* -
## math

If I use the method of completing the square on 3w^2-4w+1=0 How would I solve??

*asked by I need some explaining on April 20, 2010* -
## mathematics

solve m2+6m+7 using completing the square method

*asked by anthony on November 4, 2016* -
## maths

Px^2-(2p+q)x+(p+q)=0 solve by completing of square method

*asked by danmarkiburi on April 8, 2014* -
## Maths

solve y^2-4y=13 using completing the square method

*asked by Evans on April 17, 2018* -
## Math

Solve the system of equations using substitution, elimination by addition, or augmented matrix methods (your choice). Show work. 3𝑥 − 2𝑦 = 5 5𝑥 + 3𝑦 = 21

*asked by Ted on March 6, 2016* -
## Algebra 2

Solving Quadratic System x^2+4y^2=16 x^2+y^2=4 Please SHOW WORK I'm having trouble solve this...

*asked by Mesa on November 23, 2014* -
## Intermediate Algebra (Math)

HELP PLEASE, Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -2x Ð 8y = 22 -6x Ð y = 20 At first I tried to multiply by 8 but that did not work.

*asked by Lyri on October 11, 2010* -
## math

2. Simplify. Please be sure to show all of your work. -3(-9) – |-5 – 3 3. Simplify. Please show all of your work 9c^3+7c-(3c^3-12+c) 4. Solve 4x- 3(5x-8) =23-9(x+2) . Please show all of your work 5. Solve the following equation for z. Please show all

*asked by christine on August 15, 2011* -
## Math

Solve the system using any algebraic method. 2x - 2y + z = 3 5y - z = -31 x + 3y + 2z = -21 ______________________ The answer I got for this is ( -26, 6,67) but I know its wrong and I don't know why. Help please >< my work is at the bottom I used

*asked by Linda on November 1, 2011* -
## calc

correction: 9/25(u+7)u^11 du = 9/25(u^12 + 7 u^11) du and you can easily integrate this indefinate integral of 9x(5x-7)^11 dx using the u substitution method: i know u= (5x-7) but when i use this the x in the 9x doesn't cancel thus x= (u+7)/5. however when

*asked by Count Iblis on December 4, 2006* -
## Maths integration

Please help! These 2 questions are very similar, and i tried to do completing square method, but i cant get the correct answer! I'm trying to get the dy/dx to be a complete square thingy to show that the value is always greater or equal to 0. 1. Show that

*asked by Aoi on June 19, 2009* -
## Math

solve by addition method: please show work. -3x + y = 3 2x -3y =7

*asked by HELEN on March 14, 2010* -
## Algebra 2 URGENT

Solve the problem using the "z" method. Please Show All Work! u^4+6=-5u^2

*asked by Trisan on November 18, 2009* -
## maths --plse help me..

solve the following equation by method of completing the perfect square:- 4x^2 + 4 √3 x +3=0

*asked by Anonymous on December 13, 2012* -
## MATH

Solve the equation using completing the square method x^2-6x+9 Please I need your solutions

*asked by Simon on February 26, 2018* -
## math

solve by completing square method 16x^2-24x-13=0

*asked by simran on June 28, 2015* -
## Math

Solving quadratic equations by completing the square. Could you show me every step how to do it. That way I'll know probably know how to do the other ones. With that method you use. 1/2x^2 + x -13 = 0

*asked by Basil on October 30, 2009* -
## Geometry

To solve for the following proportion, you could use equivalent ratios, divide out the known ratio, or use cross products. Choose one of these methods to solve for t. Show your work and explain why you chose that method.

*asked by Anonymous on March 31, 2011* -
## math

To solve for the following proportion, you could use equivalent ratios, divide out the known ratio, or use cross products. Choose one of these methods to solve for t. Show your work and explain why you chose that method. 18/5 = 4/t

*asked by Alexandra on June 6, 2011* -
## Math

I was having trouble solving these equations: 7a+10=2a 11x=24+8x 9g-14=2g m-18=3m. I have to show my work and solve the answer to get the variable. Thank you!

*asked by Karissa on April 3, 2018* -
## Algebra 2 URGENT

Solve the equation using the method that seems easiest. Please Show All Work! x^2+12=0

*asked by Trisan on November 18, 2009* -
## Algebra

Ok, I tried watching a video on how to solve a system by substitution. But I feel like I did it wrong, so can someone check my work and show/ tell me where I went wrong. So the system by substitution -2x-3y=-2 Y=2x+6 First I combined my 2 equations but

*asked by Samantha on October 10, 2017* -
## Math

I still don't know how to directly solve this problem. Can someone guide to solve this system of equation by using the substitution method? Thanks! 1. Y=6x-5 Y=-x+9

*asked by Anonymous on January 29, 2014* -
## Algebra 2

Completing the square method allows you to solve any quadratic equation. For each of the following determine what number completes the square. I cannot find my notes on completing the square, can someone please help with these two problems? 1. x^2+8x 2.

*asked by Christian on May 21, 2007* -
## college algebra

please solve by method of substitution 0.3x-0.4y-0.33=0 0.1x + 0.2y -.21=0 please give all steps to solve.I think I understand the basic concept but this is little more complicated for me. Thanks in advance

*asked by Nadia on November 24, 2009* -
## CALC 2 - Partial Functions!!

How do I solve Integral of 7/(16-x^2) I know I must break down (16-x^2) into (x+4)(-x+4), but after I do that what is next? Using the method of partial fractions, convince yourself that 7/(16-x^2)= (7/8)*[1/(4+x) + 1/(4-x)] The two additive terms can be

*asked by Ace on June 13, 2007* -
## algebra

use the Substitution Method. Please give it a try. y = 3x + 4 5x + 3y = 12 Why is the substitution method preferred in this case?

*asked by Maya on April 5, 2011* -
## algebra

using the substitution method how do you solve y=-1/3x y+2x=5

*asked by renee on April 13, 2011*