# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 38
1. ## Algebra

10. Solve each radical expression. Check your solution. 1=√(-2v-3) 11. Solve each radical expression. Check your solution. √(n+5)= √(5n-11) 12. Tell which solutions, if any, are extraneous for each question. √(12-n)=n; n= -4,n=3

asked by Anonymous on May 3, 2016
2. ## Math/Calculus

Please take a look at my work below and provide a good critique: Solve the differential equation using the method of undetermined coefficients or variation of parameters. y'' - 3y' + 2y = sin(x) yc(x)= c1*e^2x+c2*e^x y"-3y'+2y=sin(x) r^2-3r+2=0

asked by COFFEE on July 11, 2007
3. ## Chem 2

A 0.15 M solution of butanoic acid, C3H7COOH, has a pH of 2.8210. Find the Ka of butanoic acid. Call buanoic acid HB. Then the ionization is HB ==> H^+ + B^- To start (HB) = 0.15 (H^+) = 0 and (B^-) = 0 After ionization, (H^+) = x but that is found by

asked by Jess on July 19, 2007
4. ## Math

I am putting < for the square root abbreviation. I don't know how to use it on my comp. 3

asked by Andrea on February 22, 2007
5. ## Physics PLEASE

I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were zeros are subscripts my book tells me to derive it this way use the definition of average velocity to derive a formula for x use the formula for average velocity when constant acceleration is

asked by Physics PLEASE on June 19, 2009
6. ## math

A 25% vinegar solution is combined with triple the amount of a 45% vinegar solution and a 5% vinegar solution resulting in 20 milliliters of a 30% vinegar solution. Write an equation that models this situation and explain what each part represents in the

asked by Bob on November 26, 2018
7. ## Calculus

Please check my answers. Solve the following equations and/or system of equations for the unknown variables. 1. x^2-3x-12=0 x= 3 + sqrt(57) / 2, x= 3 - sqrt(57) / 2 2. x+y=8 , 3x+2y=2 x=-14, y=22 3. 3x + 2y =10 , x+y=5 , y+z =9 x=0,y=5, z=4 4. 1/x-p1z=0,

asked by John on May 18, 2015
8. ## Math

What steps do I take in order to solve : (101-100) = .512 times (x/.5) solve for x and show steps

asked by MAX on December 11, 2010
9. ## Truth in Lending

I have a quick question. I keep getting confused in this topic. Purchase down payment= \$3000 add on number of payments = 18 price= \$500 interest rate : 7% FIND THE APR TO THE NEAREST HALF. In my solution I am first calculating the total payment and then I

asked by HM on October 14, 2011
10. ## accounting

I need help, do not want the answer just stuck on how to solve this one. Here is the problem Elkins Company sold \$2,500,000, 8%, 10-year bonds on July 1, 2011. The bonds were dated July 1, 2011, and pay interest July 1 and January 1. Elkins Company uses

asked by newbie2school on February 10, 2013
11. ## java programming

i'm almost done with this program but i can't figure out how to shoo the wumpus. i'm stuck as to how the shot direction has the wumpus in there. it's the last part of the main method is where i put it..please help thanks import java.util.*; public class

asked by yuki on November 29, 2007
12. ## college algebra

Write an equation of the line parallel to the line given by 3x-2y=8 and having the same y-intercept as the line given by 2y+3x=-4 (show work) I am stuck with this problem. Can you please show me how to do these types of equations? Thank you

asked by Clay on February 9, 2013
13. ## Calculus

Hello, I would like to make sure the answers to these questions are correct. 1. Using the shell method, what is the volume of a solid that is generated by rotating the region by y = x^2 and x = y^2 about the x axis. My Work: r = y h = sqrt(y) - y^2 2pi

asked by Daisy on January 18, 2017
14. ## Chemistry

Okay, so i've got 8 reactions i am supposed to balance "according to the half-reaction method". Only problem is, i was gone for the lesson, and my borrowed notes look like an entirely different language! So if you could please show me the steps and explain

asked by Nessy on May 21, 2010
15. ## Calculus

I need help setting up the equation. The portion of the graph y = ex between x = 0 and x = ln 3 is rotated around the y axis to form a container. The container is filled with water. Use n = 4 subintervals and midpoints to approximate the work required to

asked by Kay on July 22, 2011
16. ## Math

There is monthly fee of \$35 at your fitness center. You have spent \$700 in fees at the fitness center since you joined. Write an equation to represent how much you've spent where x represents the number of months that you've been a member. Solve your

asked by LOVE on March 7, 2016
17. ## College Algebra

These are the points on the graph! O year = \$41000 1 year = \$43000 2 year = \$46000 3 year = \$48500 The following graph shows Bob’s salary from the year 2002 to the year 2005. He was hired in the year 2002; therefore t = 0 represents the year 2002. List

asked by Cupcake on November 17, 2007
18. ## algebra

Solve the system by graphing. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) 4x + 2y = 12 5x − 4y = 2

asked by P on March 12, 2014
19. ## Algebra confused/Thank you

Solve the system by graphing. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) 3x + 2y = 5 4x − 3y = 1

asked by Mary Ann on June 7, 2014
20. ## algebra

Solve the system by graphing. (If the system is inconsistent, enter INCONSISTENT. If the system is dependent, enter DEPENDENT.) x − y = 2 2x + 3y = 19

asked by P on March 12, 2014
21. ## Math

Suppose a scientist on Earth throws a baseball upward. The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second. How long does it take for the ball to hit the ground (H=0)? (Use the quadratic formula to

asked by A.S. on July 24, 2011
22. ## precalculus

Which of the following would be the best first step when solving the following system using the substitution method? • x - y = -4 ; • x + 2y = 5 x = -4 - y x = -4 + y 2y = 5 - x 2y = 5 + x I have solved the equation but I am unsure which is the best

asked by Anonymous on November 28, 2016
23. ## geometry

line BD bisects angle ABC. Solve for X and find the measures of angle ABC. angle ABD= 5X, angle DBC= 3X + 10 I don't really understand this question so can someone please help me solve this and explain to me how they solved it/ show the steps of how to

asked by Tonya on September 2, 2014
24. ## physics

if the system is a basket, the basket is tied to a rope and it is stopped by a fixed clamp when it is falling down, I know there is initial KE but how come initial work is negative. Isnt force and displacement are in the same direction, so work should be

asked by eng on May 25, 2010
25. ## algebra1/McDougal Littell

I need to know how to work this problem and show my work: 1/5x-3x+2=2/5x + 18 First rather the x so: 1/5x-3x+2=2/5x+18 1/5x-3x-2/5x=18-2 -3.2x=16 -x=5 x=-5 I don't know if this is correct. Please cheak over it. i don't unstand math. how can i?

asked by deanne on November 27, 2006
26. ## 6th grade Math

Abraham earns \$11.50 an hour. How many hours will Abraham have to work to earn \$483? Please Show Work!!!!

asked by ariana on December 3, 2014
27. ## math

Andrea buys four shirts and three pairs of pants for \$85.50. She returns the next day and buys three shirts and five pairs of pants for \$115.00. What is the price of each shirt and each pair of pants? How would I solve this? I need to show my work...

asked by ki on February 11, 2013
28. ## Math 6 grade

I just want to know if someone can help me understand what is it asking.if I have to show different as different ways of fractions and decimals to come up to 15% or just one method of 15%. copy the web below. Since it is a web that shows the connections

asked by Jessica on November 8, 2016
29. ## Business Communications

When someone complains about a problem, is it a good idea to quickly suggest a solution? A. Yes, because a quick suggestion show you think quickly. B. Yes, because offering a solution shows that you care about the other person. C. No, because the other

asked by Rain Misoa on August 18, 2010
30. ## Chemistry

1000 g of a 50% (mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution? Please show me the detail answer

asked by Dewa on October 29, 2011
31. ## Chemistry

1000 g of a 50% (mass percentage) nitric acid solution is to be diluted to 20%(mass percentage) nitric acid solution. How many liters of water should be added to the starting solution? Please show me the detail answer

asked by Dewa on October 29, 2011
32. ## PHYSICS HELP

If the external world does work on the system, the quantity of work is negative or positive? I said it was positive and Bob Pursley said I was right, but a Physics student said that it is negative. Please help if you can..

asked by Pat on January 10, 2007
33. ## Chemistry

1. Consider the conductance meter and the titration method of determining the salt content of a brine sample. Discuss at least two advantages and two disadvantages of each method. 2. A corrosion technologist pipetted a 50.00 mL sample of an unknown brine

asked by Shannon on July 1, 2011
34. ## Chemistry

You made 100.0 ml of a lead (II) nitrate solution for lab but forgot to cap it. The next lab session you noticed that there was only 80.0 ml left. In addition, you forgot the initial concentration of the solution. You decide to take 2.00 ml of the solution

asked by Anonymous on October 30, 2006
35. ## calculus

Use Euler's method with step size 0.1 to estimate y(0.5), where y(x) is the solution of the initial-value problem y ' = y + 4xy, y(0) = 1. (Round the answer to four decimal places.)

asked by HELPP ME on March 22, 2019
36. ## Calculus

x+2)^3(X-1)^4(x+3)^2

asked by Sam on January 19, 2011
37. ## Calculus

(x+2)^3(X-1)^4(x+3)^2 Write this solution in interval notation. Can someone explain how to do the method where you start with a + on the number line, and depending on the odd or even value of the next exponent, you switch to and -/+ ?

asked by Sam on January 19, 2011
38. ## Chemistry

Describe how to prepare a 500cm3 solution of 0.2moldm-3 sodium trioxocarbonate(iv) Give the Apparatus,Method, Theory, Conclusion and precautions.

asked by Favour on October 12, 2017
39. ## Math

Find the GCF of the numbers 52 and 405. Show your method. The possibilities are 65, 26, 1 and 6. Is the gcf 1?

asked by Anonymous on October 4, 2009
40. ## Further mathematics

You are given that x=(2x^2-x+8)y.(1)show,by the method of completing the square that (x-1+y)^2 divided by 4y,=1+2y-63y^2 divided by 16y^2

asked by AKINTUNDE Martha on October 25, 2016
41. ## math

solve the system x+6y =24 -6x+5y =-21

asked by sherri r on January 19, 2009
42. ## College Algebra

Solve the system. 1/4x+1/3y+1/2z=-7/12 1/3x+2/3y+1/4z=-17/3 1/2x-1/3y+2/3z=19/6

asked by Keonn'a on September 23, 2017
43. ## Math help

How would I solve this system? Y=-3 Y=x+1

asked by Anonymous on February 19, 2014
44. ## Algebra 2

Solve the system: y^2 - 4x^2 = 4 and y = 2x. (-1,-2)?

asked by Lily on May 18, 2013
45. ## math

solve the system -32+3z=4 (x-2y) 4 (x-2y-z)= -36 -2 (2x+y)+2z=-12.

asked by sherri r on January 19, 2009
46. ## math question

solve the system 3x+4y=40 y-2y=0

asked by sherri r on January 19, 2009
47. ## math

Solve the system x^2+y^2-4x+2y=20 4x +3y =5

asked by Kyle on March 1, 2012
48. ## math question

solve the system 3x+4y=40 y-2y=0

asked by sherri r on January 19, 2009
49. ## algebra

Solve the following system: 1/2x-1/4y=7/2 3/4x+1/3y=19/2

50. ## Algebra

Solve the system: 3x-y+z=3 -x+y+2z=0 -5x+3y+2z=-2 x= y= z=

asked by Joe on January 27, 2011
51. ## College Algebra

Solve the system. 2x+9y=4 6y-2z=1 -4x+4z=0

asked by Keonn'a on September 23, 2017
52. ## Alg2

Solve the system for z. 2x - y + 2z = 11 x - 2y - 3z = -5 -3x + z = -3

asked by Sira on May 8, 2012
53. ## Algebra

Solve each system. y=2x+2 y=-2x-6

asked by Kimmy on April 2, 2016
54. ## algebra

solve the system y=x+3 y=-3x+7

asked by Anonymous on January 31, 2012
55. ## Algebra

4x+2y-3z=7 2x+4y+z=35 6x+2y-2z=20 solve the system

asked by Jack on June 19, 2011
56. ## algebra

y=-2x+5 2y+4x=10 solve the system ?

asked by miaa on January 20, 2011
57. ## algebra

Solve the system. y=x+1 y=-2x+7 x= y=

asked by brian on July 10, 2011
58. ## college algebra

solve the system 2x+y=-4 -x+y= 2

asked by drinkard on December 7, 2013
59. ## Math

Solve the system: 3x-y-7=0 x+5y+3=0

asked by Anonymous on February 4, 2010
60. ## Algebra

x/4 - y/2 = -11/4 x/4 + y/2 = 1/4 solve the system

asked by Christina on November 3, 2011
61. ## algebra

solve the system 2x-y+z=3 x+3y-2x=11 3x-2y+4z=1

asked by Terri on February 24, 2009
62. ## Math

How would you solve this system? Y=-x+3 Y=x+4

asked by Anonymous on February 5, 2014
63. ## Math

solve the system: y^2=1-x^2 y^2=x^2-3x+2

asked by PLEASE ANSWER THIS !!! on August 7, 2010
64. ## math

Solve the following system: 2x-6y = 26 3x+5y = -3

asked by Anonymous on December 1, 2017
65. ## math

solve the following system 8x+19=-19 -3x+7y=-24 x= y=

asked by Anonymous on March 5, 2013
66. ## Math

solve each system 1) 3x + y = 6 2x + 3y = 13 2) 2x + 5y - 6 = 0 -2x + y - 2 = 0 3) x + 3y = 6 4x - 5y = 7

asked by Melanie on February 22, 2011
67. ## Algebra2

Solve the system for 2x=3y=2 3x-5y=22

asked by Giovanni on September 12, 2016
68. ## math

Solve the system x^2+y^2-4x+2y=20 4x +3y =5

asked by Jill on March 12, 2012
69. ## Math College (Algebra)

How to solve this system? x + [(3x-y)/(x^2+y^2)] = 3 y - [(x+3y)/(x^2+y^2)] = 0

asked by Frank on October 11, 2014
70. ## Algebra 2

Solve each system 6x-2y=10 3x-2=y

asked by Sam on October 12, 2015
71. ## College algebra

Solve the system Y=3x-2 6x-2y=30

asked by Sara on December 3, 2013
72. ## Algebra 2

Solve each system 6x-2y=10 and 3x-2=y

asked by Eric on October 11, 2015
73. ## College algebra

Solve the system X=2y+3 3x+4y=59

asked by Sara on December 3, 2013
74. ## college mathematics1

solve the system x+6y=24, -6x+5y= -21

asked by Linda on January 14, 2012
75. ## math help

solve the following system 8x+19=-19 -3x+7y=-24

asked by please on March 6, 2013
76. ## College Algebra

How to solve this system? x + [(3x-y)/(x^2+y^2)] = 3 y - [(x+3y)/(x^2+y^2)] = 0

asked by Francis on October 11, 2014
77. ## Algebra 2

Solve each system 3x-9y=3 and 2x=16-y

asked by Eric on October 11, 2015
78. ## Math

Solve the system. 3x^2+4x-y=8 y+3=2x^2+4x

asked by I need help please!! on April 21, 2016
79. ## math

Solve the system. {x^2 + y^2 = 85 {3x + y = 15

asked by Gray on June 10, 2018
80. ## Algebra 2

Solve each system 6x-2y=10 3x-2=y

asked by Sam on October 12, 2015
81. ## math 125

solve the system 2x-3y-z=-8 x-y--z=-2 -4x+3y+z=6

asked by martha on March 24, 2012
82. ## 3 grade math ms sue

when lori gave the clerk two \$1 bills to pay for items she selected from the list below,she received \$0.20 change. pencils: \$0.30 each pens: \$0.25 each markers: \$0.55 each notebook:\$1.25 each MY SON SAY WRITE THIS THEN YOU WILL NOW HOW HE HAVE TO DO(WE HAD

asked by dw on April 30, 2012
83. ## lab

show me how to answer a question like this A chemical solution contains 40% grain. How much grain is in 35.5ml of a solution

asked by Anonymous on October 24, 2010
84. ## algebra1/McDougal Littell

Is the given number a solution of the equation or the inequality? 4y-7=3y-4;3 equation I think it is the inequality. Try substituting 3 for y and see what you get. 4*3-7=3*3-4 or 12-7=9-4 Is this a valid equality? Alternative solution: solve for y

asked by tonya on September 14, 2006
85. ## algebra

solve for x (24+2x)(10+2x) - 240 = 152 First multiply. 24(10) = ___ 2x (2x) = ____ Now subtract 240. Can you finish the problem from here? dont i need to put this in equatic equation to solve for x. cause i need to find the width of a small rectangle

asked by q on August 3, 2007
86. ## Math

Plz cud sombdy show me long division method of x^4/(x-1)(x^2+1)???? Plz note (x-1)(x^2+1) is in the denominator.

asked by Abhishek on January 13, 2013
87. ## Math

Plz cud sombdy show me long division method of x^4/(x-1)(x^2+1)???? Plz note (x-1)(x^2+1) is in the denominator.

asked by Abhishek on January 13, 2013
88. ## Math

Plz cud sombdy show me long division method of x^4/(x-1)(x^2+1)???? Plz note (x-1)(x^2+1) is in the denominator.

asked by Abhishek on January 13, 2013
89. ## maths

how do i Rearrange the formula Y = 5X + 7 so that X is the subject. and i need to show my method carefully. subtract seven from both sides. divide both sides by five. Y=5x+7 Y-7=5x Y-7/5=x

asked by m on May 9, 2007

(x+3/4)^2 = 17/16 My teacher taught us a square root method, but I am confused with it on this one! I would prefer if you show me using square roots, but if you have another way, please help too! Thank you!

asked by Gemma on May 12, 2009
91. ## Maths

If Q(x)=x^2 for x less than or equal to 1 =ax+b for 1

asked by Jiskhaa on August 6, 2012
92. ## math

how do you solve for zero for this equation? (2/3)X -12 -(20/X^2) (2/3)X -12 -(20/X^2) = 0 --> 2/3 X^3 - 12 X^2 - 20 = 0 ---> X^3 - 18 X^2 - 30 = 0 Numerical solution: You see that for X = 18 the first and second term cancel, so the left hand side is -30.

asked by Sam on January 17, 2007
93. ## chem

An aspirin tablet weighing 0.650 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of

asked by un on April 20, 2008
94. ## Math/Calculus

Solve the differential equation y'=3t^2+4. Solve the initial value problem y(0)=3. Separation of variables! My work: dy/dt= 3t^2+4 dy= 3t^2+4 dt Then you integrate both sides. ∫ dy= ∫ 3t^2+4dt Question: is there a 1 in dy? ( ∫ 1dy)? If so:

asked by Sarah on April 2, 2015
95. ## Math

Note: Enter your answer and show all the steps that you use to solve this problem in the space provided. An image of a rocket is shown. The triangle at the top of the rocket has a base of length 3 inches and a height of 4 inches. The rectangle in the

asked by hi on March 7, 2019
96. ## basic geometric

The width of a rectangle is 6 centimeters less than the lenght. The perimeter is 64 centimeteres . would you please help me, answer these work. than you. L = length W = width ================ eqn 1: 2L + 2W = perimeter = 64 cm eqn 2: W+6cm = L Solve the

asked by vero on March 11, 2007
97. ## math equation

Please help me to work this out using the inversion method (I'd appreciate if you could provide a step by step breakdown (I don't understand how to do it and my math really sucks!!): Jim spent 1/3 of his salary on food. He spent 1/4 of it on shoes. He has

asked by Lydia on June 12, 2014
98. ## Qualitative analysis

Computer sales over the past 4 months have been 35, 34, 38, and 44 units. Using a 3-month moving average, forecast sales for the next month. Using a 3-month weighted moving average with the weights 3, 2, and 1, and with the most weight on the most recent

asked by Nancy on August 5, 2014
99. ## Simplifying Rational Expressions4x-12/4x

These are the answers i wanted corrected: 4x12/4x d+7/d^2-49 t^2-25/t^2+t-20 2x^2+6x+4/4x^2-12x-16 6-y/y^2-2y-24 You will have to use brackets to show the intended order of operation. How can we 'correct' your work if you supply neither solutions nor

asked by mike on March 11, 2007
100. ## Math

6 cd+2b+9(cd+b/3)=A(3cd+b) I'm really sorry this question seems really hard to me. But what I got as an answer is 6, ohh and I have another question. Can you use the distributive property on this problem? (Argh our class is getting ready for the PSAT!) And

asked by Hatsune Miku on April 30, 2017