# 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

91,330 questions, page 57
1. ## american government

in what ways does the existence of minor parties also work to strengthen the united states two party system

asked by Anonymous on October 27, 2008
2. ## fct Omoku Nigeria

Calculate the work done when a system raises a volume of water of radius 5.0mm through 10cm in thermodynamic.

asked by mokwe chioma Rose on July 8, 2015
3. ## math

List advantages and disadvantages comparing and contrasting solving systems of linear equations with two variables by graphing and by equation method. Explain which method you prefer and why. Support your answer by providing appropriate examples

asked by Anonymous on December 17, 2010
4. ## Algebra

Question 1 Solve using the multiplication principle then graph. -15>-75 Question 2 Translate to an equality. Use the variable x. The number of people in the chess clubi less than or equal to 15. Question 3 Solve using the addition and multiplication

asked by Queen D on March 6, 2010
5. ## 2 math ?s

Thank you so much in advance! Verify each identity. Work one side (the harder side) Please show me the work sin θ +cos θ cot θ= csc θ Cos^2 θ + 1 =2cos^2 θ +sin^2 θ

asked by GG on December 3, 2014
6. ## Physics

We can reasonably model a 75 W incandescent light bulb as a sphere 6.0 cm in diameter. Typically, only about 5% of the energy goes to visible light; the rest goes largely to non-visible light infrared radiation. (a) What is the visible light intensity (in

asked by Brittany on August 11, 2010
7. ## chemistry

The concentration of HNO3 in a solution is 3.50 10-6 M. What is the [H3O+] in the solution? _______M What is the [OH-] in the solution? ________ M What is the pH of the solution? What is the pOH of the solution?

asked by jim on December 21, 2010
8. ## Algebra

Translate each situation to a system of equations. Do not attempt to solve. Paint Town sold 45 paintbrushes, one kind at \$8.50 each and another at \$9.50 each. In all, \$398.75 was taken in for the brushes. How many of each kind were sold? My teacher told me

asked by Nessie on February 10, 2009
9. ## chemistry

use and activity series to Identify two metals that will not generate hydrogen gas when treated with and acid write balanced molecular equations: aluminum metal with dilute nitric acid Write balanced molecular equations:Calcium hydroxide solution with

asked by Katie on April 14, 2008
10. ## chemistry

use and activity series to Identify two metals that will not generate hydrogen gas when treated with and acid write balanced molecular equations: aluminum metal with dilute nitric acid Write balanced molecular equations:Calcium hydroxide solution with

asked by Katie on April 14, 2008
11. ## Algebra

1.Simplify the expression (3/7)^2 A.3/7 B.6/14 C.9/49 D.5/9 2.Which is a solution of the equation y=5x+3? A.(5,28) B.(28,5) C.(4,20) D.(3,19) 3.Solve the equation. -15=a/5 A.a=-3 B.a=-20 C.a=-10 D.a=-75 4.Of 158 consumers polled, some like only action

asked by GummyBears on December 15, 2015
12. ## ap chemistry

for the following, mix the equal volumes of one solution from group I with one solution from group II to achieve the indicated pH. calculate the pH of each solution. Group I: .2M NH4Cl, .2M HCl, .2M C6H5NH3Cl, .2M (C2H5)3NHCl Group II: .2M KOI, .2M NaCN,

asked by hannah on February 9, 2012
13. ## chemistry

Q.1 What will be the pH at the equivalence point during the titration of a 100 ml 0.2M solution of CH3COONa with 0.2M of solution of HCl?(Ka = 2*10^-5) Q.2 Aniline behaves as a weak base.When 0.1M,50ml solution of aniline was mixed with 0.1M,25ml solution

asked by gaurav on March 27, 2010
14. ## Algebra

Need help with these: [Can you show me the work for them please, if needed?] 3. Simplify (4x)(-2y) Is the answer -8xy? 5. To which set of numbers does 7.543 belong? a. rational b. irrational c. integer ? 8. Write an algebraic expression for one-half a

asked by mysterychicken on March 30, 2010
15. ## Physics need work checked

Physics lenses. Please help, my math is wrong and I need second opinion.? Consider three lenses with focal lengths of 25.9 cm, -15.8 cm, and 10.0 cm positioned on the x axis at x1 = 0 m, x2 = 0.412 m, and x3 = 0.514 m, respectively. An object is at d =

asked by Physics on May 2, 2012
16. ## Physics - Question

I have this number where they give me the coordinates of 3 particles and the mass of each one of them. Afterwards, there's a force applied on 2 of those particles and they ask me to calculate the systems total moment of inertia. But then they ask me this:

asked by Raf on February 22, 2012
17. ## PH Calculation

Consider a 0.42 M solution of NaCH3COO CH3COO–(aq) + H2O(l) -> CH3COOH(aq) + OH–(aq) Calculate the pH of the solution at equilibrium. Try the weak acid or weak base approximation (as appropriate) and check the validity of the approximation. If the

asked by RZeal on April 26, 2012
18. ## math

how do i solve two step equations? Do you mean two equations in two unknowns? The method of substitution is one way. There is a good tutorial here: http://www.themathpage.com/alg/simultaneous-equations.htm

asked by megan on January 18, 2007
19. ## Chemistry

I'm trying to work out the equation for when ammonia solution is added to zinc hydroxide solution. I think a precipitate forms. [Zn(OH)4]2- + NH3(aq) + H2O(l) --> ???? Zn(OH)2 + 4NH3 ==> Zn(NH3)4(OH)2 The Zn(OH)2 forms a soluble complex ion with NH3.

asked by Fiona on May 23, 2007
20. ## Chemistry

A 25.00-mL sample of an H2SO4 (2 and 4 are subscripted) solution of unknown concentration is titrated with a .1328 M KOH solution. A volume of 38.33 mL of KOH was required to reach the endpoint. What is the concentration of the unknown H2SO4 (again, the 2

asked by coug on January 4, 2010
21. ## Chemistry

A 25.00-mL sample of an H2SO4 (2 and 4 are subscripted) solution of unknown concentration is titrated with a .1328 M KOH solution. A volume of 38.33 mL of KOH was required to reach the endpoint. What is the concentration of the unknown H2SO4 (again, the 2

asked by coug on January 4, 2010
22. ## Accounting

The president of Penman Corporation, John Burton, has asked you, the company’s controller, to advise him on whether Penman should develop a just-in-time (JIT) inventory system. Your research concludes that there is a high cost associated with inventory

asked by Denise on February 25, 2007
23. ## Drugs n Dosages

Dr. Bartles has written an order for 375 mg of Amoxil for his patient, Jonathan Becker. The medication is to be given every 8 hours. Troubled Terry used the formula method to calculate the amount to administer in teaspoons. Here is his work: D = 375 Q = 5

asked by Anonymous on May 1, 2012
24. ## Calculus

Hello, I would greatly appreciate any help that I can have with the following calculus question below. It has to do with separable differential equations. I'm also going to explain what I've done so far, so please bear with me (but honestly I don't think

asked by Stephen on April 16, 2017
25. ## Algebra

Will you please check my work? I'm supposed to "Use square roots to solve the following equations; round to the nearest hundredth, if necessary." 1. 5x^2 - 526 = -651 My Work: 5x^2 - 526 + 526 = -651 + 526 (sq root of) 5x^2 = (sq root of) -125 = 5x/5 =

asked by Student on February 26, 2014

First of all I would like to thank everyone for helping me. The reason that I post my questions like I do is b/c they are multiple choice and all I'm looking for is to know if my answer is correct or not. If its not right then I would go back and try to

asked by Jon on February 13, 2008
27. ## study habits 4 science

For the entire week 1-4, I do 4 days of Biology, 4 days of Physics and Process Information, and at the end be4 the exam on the 13th of next month, I redo the entire thing, study harder, and be prepared for the test. It's that gonna succeed or just get a

asked by Henry C. on August 31, 2005

Given the differential equation: dy/dx = y(1+x), y(0)=1, Use Euler's method with step size .1 to approximate y(.3). ... please check this for me! no one has responded to this question yet.. thanks. y' = y(1+x), y'(0) = 1(1+0)=1 ->the solution has slope 1

asked by COFFEE on July 2, 2007
29. ## Math

John has two part time jobs. He works no more than 40 hours per week. He earns \$6 per hour from the first job and \$8 per hour from the second job. To cover his expenses, he needs to earn at lease \$210 per week. Which of the following system of linear

30. ## physics

The plates of a parallel plate capacitor each have an area of 0.40 m2 and are separated by a distance of 0.02 m. They are charged until the potential difference between the plates is 3000 V. The charged capacitor is then isolated. How much work is required

asked by kevin on October 12, 2006
31. ## math

a crate contains apples, pears, and oranges.There are 184 apples and pears and 248 apples and oranges. there are 3 times as many oranges as pears. how many apples are in the crate? How do I show my work to solve this problem using Singapore math - Math in

32. ## chemistry

When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density

asked by patrick on October 15, 2015
33. ## Chemistry

I'm really not getting how to solve these chemical equations. If someone could explain to me their method of solving. I know you have to list the number of reactants and products for each side but I get confused what you add and what determines what you

asked by Nick on January 25, 2011
34. ## calculus 1

Use Newton's method to find all solutions of the equation correct to six decimal places. (Enter your answers as a comma-separated list.) 6 cos(x) = x + 1 can somebody explain to me step by step on how to solve this problem?

asked by john on November 7, 2017
35. ## Math

Find the value of the following expression: (2^8 x 5^-5 x 19^0)^-2 x (5^-2/ 2^3)^4 x 2^28 Can someone show me the steps on how to solve this?

asked by CCB on October 26, 2016
36. ## math

Solve the inequality and show the number line. x + 29 < 33 for x > 0

asked by TOM on February 2, 2010
37. ## (pls help) algebra

4x+y-32=1, 6x-y-4z=7, 10x+2y-6z=5 pls show me how to solve for x,y,z. Ans:xx=1.5,y=-2,z=1

asked by david on July 8, 2013
38. ## Algebra1

P=2l+2w Solve for l. Please show me how you got your answer so I will understand how to do these problems. Thank you.

asked by Samantha on October 25, 2009
39. ## Algebra

please show steps solve 9 - (9)squared > 10x - x

asked by Lisa on October 11, 2010
40. ## math

so lve equation 3(k-4.8)=-0.7(k-6.9) show steps to solve

asked by Anonymous on December 5, 2012
41. ## Algebra

Solve the equation. (2 pts.) --Show EVERY step!  2x + 5 = 17

asked by Kaai97 on February 9, 2016
42. ## Algebra

Can you please show me the steps on how to do this, and what the answer would be? 87. Solve the equation: v-4/5=3/8 THanks

asked by y912f on May 6, 2010
43. ## math

solve 3x^3+x^2-8x+4>0. show all the algebraic calculations. (5 marks)

asked by Navin on November 25, 2013
44. ## Math

Solve for the indicated variable. Can you please show me the steps on how you get the answer so I know how to do it. Thanks. F=9/5C+32, for C

asked by Ryan on May 6, 2010
45. ## math

127nine= 411x solve for x can you show me the steps please

asked by Emily on September 27, 2017
46. ## Math

solve for y 3x + y = 2 Trying to help out my daughter, if you could show me steps that would be wonderful. Thank You

asked by Jessica on March 26, 2014
47. ## math

asked by kerry on December 15, 2009
48. ## math

I meant 142 divide 24,please show how you solve it.

asked by kerry on December 15, 2009
49. ## Math (calculus)

If y = 2x^3 - 4x and dx/dt = 4, find dy/dt when x = 1. Please show me how to solve this problem with steps.

asked by Dan on January 10, 2015
50. ## math

Show me the fully formula for 3x+4y=10 2x+y=5 simultaneously solve x and y

asked by Patricia on March 4, 2012
51. ## algebra

50t + .1t^2 = 1100 Solve. show steps please

asked by jawn on August 24, 2009
52. ## algebra

I NEED HELP SOLVING THIS PROBLEM WX/P + P/X = PLEASE EXPLAIN AND SHOW HOW TO SOLVE W = 3.5, X = .4, P = 2.6

asked by JOSH on October 10, 2011
53. ## algebra

Show all steps solve the formula for the indicated variable T=3u/e for u

asked by tina on February 24, 2014
54. ## Algbra

I need help with the following question. Solve for y: 3x - 2y = 8 + x Please show the steps and the answer, thanks.

asked by Zach on February 14, 2011
55. ## algebra

I NEED HELP SOLVING THIS PROBLEM 3.5(.4)/2.6 + 2.6/.4= PLEASE EXPLAIN AND SHOW HOW TO SOLVE

asked by Bibi on October 10, 2011
56. ## algerba 1 math

how do i solve the equation: -2(-8-4)^2+-8-4/4 please show step by stap HELP PLEASE

asked by cindey on August 18, 2011
57. ## Intermediate Algebra

Solve by completing the square: x^2-6x+3=0 show steps please

asked by Lynn on December 12, 2011
58. ## algebra

an someone show me the steps to solve this problem? x^2 + 5x +8 divided by x + 3

asked by katy on September 23, 2011
59. ## math

Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =

asked by lizbeth on September 11, 2015
60. ## algebra

Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

asked by J.C. on April 9, 2010
61. ## MATH *

0=-16t^2+80t+96 Solve for t. Can someone please show me the steps on how to do this I can not seem to get it right. Thanks!!

asked by Steph on December 2, 2013
62. ## math

solve for x and y when 5x-3y-2=0 and 7x+y=0. Please this is sooo hard. no clue how to do it. please show me how to do it.

asked by neil hannit on February 16, 2009
63. ## math

Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =

asked by jake on September 11, 2015
64. ## math

Can someone answer this ans show me how to solve? (16-8)+(4x4)

asked by Liberty on March 8, 2011
65. ## algebra

Please show me how to simplify this expression and solve the equation: (v^2 + 6v+8)/(v^2 + v - 12) / (v+2)/(2v-6) Thank you very much.

asked by Anneliese on January 12, 2017
66. ## Algebra

I need help on this one too, please. Solve for X. 3x-2y=6 I got x=6+2y/3. My question is this: Can this be reduced down to x=2+2y? You really need to use parentheses here. x = (6+2y)/3 or you might want to show it as 2+(2y/3) or 2+(2/3)y

asked by peggy on January 18, 2007
67. ## Algebra 1

2y/5+5=9 Please solve this problem and show your steps, (like a t-chart.) Thank You!!! :)

asked by Sunny on October 11, 2009
68. ## maths

show clearly that 4 3 ---=8 2 solve the equation 5x2+14x-24=0

asked by maria on May 31, 2012
69. ## Math -algerbra

can someone show me how to solve an equation algerbracially x=sqrtx+10+2

asked by anonymous on February 22, 2013
70. ## Math -algerbra

can someone show me how to solve an equation algerbracially x=sqrtx+10+2

asked by anonymous on February 22, 2013
71. ## Calculus

Solve for x: lnx^3 - 2lnx = 1 Please try and show how you got the answer best as you can thank you :)

asked by Jack on September 11, 2010
72. ## pre-calc help !!!!!!!

if someone could show me how to solve this problem 1) cos(345°)

asked by Haley on November 28, 2012
73. ## algebra

Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

asked by J.C. on April 9, 2010
74. ## math

Could someone show me how to solve this problem? I am trying to do it myself.I just want to make sure I am going about it the right way. Thank you. z=(SQRTx^2+y^2) (9)^-3/2 (8)^2/3

asked by kim on September 3, 2010
75. ## Math

Could someone please show me how to solve this Prove tan(-è) = -tanè

asked by Seven on August 7, 2010
76. ## Calculus

can you show me how to solve an equation using the chain rule

asked by Duane on November 10, 2014
77. ## Algebra I

Exponential Function. Please show me how to solve: g(t) = -0.5 x 4w (that is 4 to the power of w) w=18

asked by Jane on January 8, 2012
78. ## Algebra I

Please show me the steps to solve this: KE = ½ (900kg)*(20m/s)^2

asked by SAM on November 16, 2017
79. ## college algebra

2/5(5x-3) - 1/3(12x-5). Have the correct answer but need someone to show me how to solve for it.

asked by amber on June 20, 2011
80. ## Subsitution Method Grrr

Please show me the steps and solve. 3x+5y=1025 x+5=275

asked by andra on February 11, 2014
81. ## algebra

Please solve 4x² + 8x + 16 = 0 and show steps. Confused..

asked by J.C. on April 9, 2010
82. ## math

Remember to show all of the steps that you use to solve the problem. (–1.15) × 3.2 =

asked by jake on September 11, 2015
83. ## Math

solve simultaneous equation,* *4m=(9-n)²* *4n=(3-m)²* Show workings

asked by Mjay on June 7, 2018
84. ## computers

Can you find both multitasking system and a multiprocessing system operating system?

asked by Dani on May 26, 2010
85. ## PHysics

The vector position of a 3.65 g particle moving in the xy plane varies in time according to the following equation. r1 = At the same time, the vector position of a 5.60 g particle varies according to the following equation. r2 = For each equation, t is in

asked by engmath on February 16, 2010
86. ## physics

Consider the system shown, with m1 = 2.0 kg, m2 = 3.0 kg, and α = 30o. The force F acts horizontally to the left and the kinetic coefficient of friction between m1 and the incline is μk = 0.40. The mass m2 is moving up at a constant speed. (a) What is

asked by Alli on February 19, 2013
87. ## Physics

A low friction cart of mass m, traveling at speed v, collides (perfectly) elastically with a cart of triple the mass, initially at rest. What is the result of this collision? (What are the final, after-collision velocities?) Do NOT use the derived

88. ## Chemistry

3. 0.1825 g of Fe(NH4)2(SO4)2•6H2O is dissolved in 250.00 mL of solution; this is Solution A. 5.00 mL of Solution A is transferred to another flask, and it is diluted to a total of 100.0 mL to make another solution, which is Solution B. Next, 3.00 mL of

89. ## Chemistry

0.1825 g of Fe(NH4)2(SO4)2•6H2O is dissolved in 250.00 mL of solution; this is Solution A. 5.00 mL of Solution A is transferred to another flask, and it is diluted to a total of 100.0 mL to make another solution, which is Solution B. Next, 3.00 mL of

asked by Anonymous on October 16, 2017
90. ## Chemistry

3. 0.1825 g of Fe(NH4)2(SO4)2•6H2O is dissolved in 250.00 mL of solution; this is Solution A. 5.00 mL of Solution A is transferred to another flask, and it is diluted to a total of 100.0 mL to make another solution, which is Solution B. Next, 3.00 mL of

asked by Anonymous on October 16, 2017
91. ## Math

A biologist has three salt solutions: some 5% solution, some 15% solution, and some 25% solution. She needs to mix some of each to get 48 liters of 18.75% solution. She wants the number of liters of the 25% solution to be equal to one liter less than the

asked by Haley on November 28, 2017
92. ## Biology

Tay-Sachs disease is a hereditary disease that kills 1 in 360,000 individuals in the general population. Individuals homozygous for the defective allele have Tay-Sachs disease and die at an early age.Studies show that heterozygous individuals have a higher

asked by Alexander on November 13, 2015
93. ## alberaic method!

how do I convert 0.12... to a fraction using algebraic method? Isn't 0.12 twelve hundreths? 12/100 = 6/50 and it can be reduced further. I'm not sure what is meant by "algebraic method" here, but .12 is the same as 12/100 Generally, if you have a decimal

asked by allana on October 19, 2006
94. ## Math

All picture frames in a store are on sale at the same percent off the regular price. This sign is near the picture frames to help shoppers calculate the sale price. regular price sale price ------------- ---------- 4.00 3.00 6.00 4.50 8.00 6.00 10.00 7.50

asked by Cherry on January 20, 2015
95. ## Heeeeeeeelp

Read the following instructions in order to complete this assignment and review the example of how to complete the math required for this assignment: Use the properties of real numbers to simplify the following expressions: 2a(a – 5) + 4(a – 5) 2w –

asked by Myya on September 15, 2013
96. ## applied maths

Partv1-v2cle A and B have masses 0.75 and 0.65 respectively. They are approaching each other moving along a straight line with speed 6m/s and 4m/s respectively. The coefficient between them is 4/3. After collision,the direction of motion of B is reversed.

asked by yhakubu on November 25, 2016
97. ## help!

A horizontal translation is applied to the graph of y= X^ 3 + 2 so that it will pass through (3, 10) what is the new equation for the graph? how do I do this? When x=3, one wants y to be 10 y= (x+a)^3 + 2 20= (3+a)^3 + 2 solve for a. I would change it to

asked by kris on August 28, 2006
98. ## Dynamics

A car weighing 3220 lb a curve of 200 ft radius bank at an angle of 30°. Find the friction force acting on tires when the car is traveling at 60 mph. The coefficient of friction between the tires and the road is 0.9. show solution step by step show FBD

asked by 18 on July 14, 2018
99. ## chemisrty

as a system increases in volume it absorbs 52.5 j of energy in the form of heat form the surroundings. the piston is working against a pressure of 5.00 atm. The final volume of the system is 58,0 L. What is the initial volume of the system if the internal

asked by Jay on November 16, 2010
100. ## Pre-calc

use either substitution or elimination 4/x-3/y=0 4y=3x

asked by Jennifer on March 14, 2012