# 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 62
1. ## math

what is 179 diveded by 4 what is the remainder and whats the work you have to show

asked by olive on December 6, 2010
2. ## algebra

Essay question: show all work find the difference. (6x^2+7)-(6x^2-4x-5)

asked by Anonymous on July 17, 2012
3. ## pre - CALCULUS

Verify the identity. Show your work. (1 + tan2u)(1 - sin2u) = 1

asked by Ciara on April 9, 2015
4. ## rational exponents

express the third root of(8a^3y^5) using rational exponents. Please show your work!

asked by tabby on April 20, 2012
5. ## Can someone check my answer plzzz!!!

Simplify (6x^-2)^2(0.5x)^4 show your work IS this right?? (6x^-2)^2 * (0.5x)^4 =6^2 x^-4 *(0.5)^4 x^4 =(36 * 0.0625) * (x^4 * x^-4) = 2.25 * x^0 =2.25 *1 =2.25 is this right Can you check my answer?

asked by that emo girl! on February 22, 2018
6. ## algebra

perform the product in simplified form please show the work. (2x+1)(3x-2)

asked by annette on December 11, 2009
7. ## Math

asked by Maggie on April 15, 2012
8. ## algebra

Write a quadratic equation with roots of 4 + 3i and 4 – 3i. Show all your work.

9. ## PHYSICS !!!!!!!!!!!!!!!!!!!!!!!!!!!!

a wave has a frequency of 2 Hz. find its period ? please show work.....

asked by HIMAR on May 3, 2011
10. ## Math - HELP!

asked by Mary on October 23, 2013
11. ## Math - Domain of Composite function

Find the domain of the composite function f ₒ g . Please show all of your work. f(x) = √x; g(x) = 2x + 12

asked by CheezyReezy on June 3, 2011
12. ## Math

Find all the numbers that give you 7.29 when squared. Show your work.

asked by Lauren on November 30, 2008
13. ## Math

What percent o the student population are girls? Please show work!

asked by Ariana on October 13, 2014
14. ## algebra

Essay; show all work. Find the product: (1/7x^2-2/5)(1/2x-1/2) any help would be appreciated

asked by mike on July 17, 2011
15. ## Algebra

Write equation for each segment. show your work. (-4,-3) (-3,-3) Y = mx + b 3 = 0(-4) +b 3 = 0 + b Y = x - 3 (1,-5) (6,-2) Y = mx + b -5 = 3/5 (1) + b -5 = 3/5 +b Don't really know where to go from here

asked by sue/Need Help on October 30, 2014
16. ## Math

Simplify the expressions in each pair. (2 marks each) (Show your work) i)f(x)=(x^2-x-2)/(x+1), g(x)=(x-2) ii)f(x)=(x^2-x-12)/(x+3), g(x)=(x^2-6x+8)/(x-2)

asked by Alex on January 10, 2015
17. ## Algebra

8x^3 + 27 factor the sum or difference of two cubes. Please show work.

asked by Michelle Summer on January 18, 2013
18. ## math (immediate help please)

how many different four digit numbers can be obtained by using all four of these digits 5,1,1,5? show work please

asked by ben on September 6, 2012
19. ## intermediate algebra

Essay. show all work. Add the following polynomials: (1/5x^2-1/5x-3/4)+(1/10x^2-1/2x+1/2)

asked by sheba on July 17, 2011
20. ## Math

Simplify the expression and SHOW YOUR WORK, please. 10h+6-5h+3 I have no clue how to do this

asked by Correct on October 17, 2018
21. ## Math

Multiply eight and eighty-eight hundredths by two and three tenths? can show the work please.

asked by DestinyLashea on February 24, 2011
22. ## Math - Write expression as single logarithm

Write the expression below as a single logarithm. Please show all of your work. ln((x^2 – 1)/(x^2 – 6x + 8)) – ln((x+1)/(x+2))

asked by CheezyReezy on June 6, 2011
23. ## Math

Essay question:show all work. Find the difference (-7x^2 5x-9)-(2x^2 7x 5)

asked by Ms.Ellis on July 12, 2011
24. ## college elg

the function f(x)=6x+9/3x-7 find inverse and check it f^-1(x)=? please show work

asked by MYA on September 5, 2012
25. ## algebra

Essay. Show all work. Find the quotient. 49a^2-b^2 --------- 7a-b

asked by shay on July 21, 2011
26. ## precalculus

verify the functions are inverses of each other by showing that f(g(x)) =x show work. f(x)=6/1-x g(x)= 1- 6/x

asked by Sara on January 15, 2012
27. ## chemistry

How many liters is 5.8 mole of neon at STP? Show work

asked by Poola on September 8, 2012
28. ## Math

asked by Nicole on November 29, 2013
29. ## Math (Algebra 1)

How do I combine the following like terms? 4+2(-x+1)-5(x-1) I have the answer - 11-7x - but I need to know how to show my work in this problem. Thanks.

asked by Jordan on October 19, 2013
30. ## Algebra 2

Quadratic Systems y=3x^2-5 x-y=3 Could you tell me the answer.I want to make sure I'm right and could you show work

asked by Stephy on November 23, 2014
31. ## algebra

Simplify. Answer should contain only positive exponents. Please show work. (3a^2)^3 Thank you!!

asked by Logan on October 19, 2016
32. ## math

asked by Anonymous on July 13, 2011
33. ## Math

asked by Sam on May 2, 2012
34. ## physics

pls show answers and work with the questions i have posted.

asked by sk on December 22, 2010
35. ## Algebra

21. simplify (2sqrt5+3sqrt7)^2 show your work. Been confused on it for a while.

asked by Eric on May 8, 2017
36. ## intermediate algebra

Essay. Show all work. find the quotient: 49a^2-b^2 --------- 7a-b

asked by Mike on July 19, 2011
37. ## Math

Simplify the expressions in each pair. (2 marks each) (Show your work) i)f(x)=(x^2)-(x)-2/(x+1),g(x)=(x-2) ii) f(x)=(x^2)-(x)-12/(x+3), g(x)=(x^2)-(6x)+8/(x-2)

asked by Alex on January 10, 2015
38. ## algebra

how many different four digit numbers can be obtained by using all four of these digits 5,1,1,5 show work please

asked by ben on September 6, 2012
39. ## Math

How many inches are in 10 feet using conversion factor? Show all of your work.

asked by Ella on November 17, 2017
40. ## Pre-Calc/Trig...

Help me please Is the given linear expression a factor of the polynomial? Show work. f(x)=2x^3+x^2-5x+2; x+2

asked by Anonymous on October 31, 2014
41. ## Flowcharts and pseudocode

Create a class whose main method creates three arrays. The first array will contain five kinds of flowers - petunia, pansy, rose, violet, and carnation. The second array will contain the cost of each flower, respectively, 50 cents, 75 cents, \$1.50, 50

asked by Wayne on March 20, 2015
42. ## algebra

You can work a total of no more than 34 hours per week at your two jobs. House cleaning pays \$8 per hour and your sales job pays \$6 per hour. You need to earn at least \$245 per week to cover your expenses. Write a system of inequalities that shows the

asked by ben on February 4, 2010
43. ## Chemistry

A 50/50 blend of engine coolant and water (by volume) is usually used in an automobile\'s engine cooling system. If your car\'s cooling system holds 4.90 gallons, what is the boiling point of the solution? Make the following assumptions in your

asked by Heather on February 21, 2012
44. ## college algebra

8x+9y=33 x-36y=-330 elimination

asked by its a secret on December 17, 2013
45. ## Math

x^2 + 9y^2 = 37 x - 2y = -3 simultaneous equation by elimination

asked by Princess on December 11, 2012
46. ## biology

how does the bladder act in elimination?

asked by jessica on October 31, 2012
47. ## Gtu

Solved by gauss elimination 3x+4y+5z=18 2x-y+8z=13 5x-2y+7x=20

asked by Utsav on July 22, 2015
48. ## algebra

how to: graph , substitution, and elimination y=2x+5 y=2x-8

asked by karen on March 27, 2011
49. ## biology

take an apricot , a walnut , few raisins square peice of spinach ,shelled egg and deshelled egg. prepare four solutions A,B,C and D.solution A is a10% solution of suger ,solution B is 80%suger solution ,solution C is10% salt solution and solutionD

asked by kumkum on May 24, 2016
50. ## Liberal Arts Math

show work simplify:(a-9b)(a+3c) (a-9b)(a+3c) a^2+3ca-9ba-9bc I'm pretty sure this is how you do it... plz check some standard formula to remember are; i: (a+b)^2=(a+b)(a+b)= a^2+2ab+b^2 ii: (a-b)^2=(a-b)(a-b)=a^2-2ab-b^2 iii: (a+b)(a-b)= a^2-b^2 look at

asked by Maria on May 10, 2007
51. ## Chemistry

How would one work through this problem? -Calculate the number of liters of 1.25M solution that can be made from 6.400g of barium nitrate. - I know that it's just stoichiometry, but I'm confused. The formula for molarity is the number of moles of the

asked by Charlie on May 7, 2016
52. ## American government

James Bryce believe that the constitution was fine example of A. Mass democracy B. Development of an oligarchical system of government. C. An incrementally improved system not far removed from the magna Carta D. A governing system that encouraged the

asked by sallie on March 12, 2016
53. ## Math

asked by Pattie on February 16, 2012
54. ## algebra

how to work and solve 7(y-2)+8=3(y-4)-2

asked by angela on September 8, 2009
55. ## Algebra 1

Solve 6(x+9)+4x=5x-6 can you work it out.

asked by Candy on September 25, 2007
56. ## Statistics

Suppose that about 25% of those called will find and excuse (work, poor health, etc) to avoid jury duty. If 12 people are called for jury duty, what is the probablity that 4 or more will not be available to serve on the jury? Please show work Thank you

asked by Harley on June 27, 2011
57. ## meme

Consider the system of equations A ⊗ x = b where (i) A ∈ R m×n max , x ∈ R n max, b ∈ R m max and Rmax = R ∪ {−∞}, (ii) ⊗ denotes the max-plus matrix (or matrix-vector) product based on the arithmetic operations of ”addition” a ⊕ b

asked by twnkal eshaal on August 21, 2015
58. ## Math

( / means absolute value) Solve: 3+/2y-1/>=1. Graph the solution set on a number line. The number line I have is: -5 -4 -3 -2 -1 0 1 2 3 4 5 6 First solution: 3+2y-1>=1 2y-4>=1 2y>=5 y>=5/2 I'm stuck b/c I had to correct the first part. I had a whole

asked by Jon on February 24, 2008
59. ## Set Theory :Complements with Ellipses

Let U= {1,2,3, . . .}, A= {1, 2, 3, . . . ., 39}. use the roster method to write the set A' Find A' = _____________________________________________ I understand how complements work. Complement A' is everything outside of set A. However, since U goes on

asked by Ashley on July 5, 2014
60. ## chemistry

Precipitation Reactions Write a molecular equation for the precipitation reaction that occurs (if any) when the following solutions are mixed. If no reaction occurs, write NO REACTION. Express your answer as a chemical equation. Identify all of the phases

asked by Jake on February 9, 2009
61. ## Chemistry

For a system where: NH2OH + CH3NH3+ --> CH3NH2 + NH3OH+ 95% 95% 5% 5% State of equilibrium in the system is described by the percentages given above.Which of the species above is the strongest acid in the system? My answer is CH3NH3+, is it correct?

asked by Meenaakshi on March 28, 2012
62. ## Chemistry

A solution is prepared by dissolving of pure HC2H3O2 and of NaC2H3O2 in of solution (the final volume). (a) What is the pH of the solution? (b) What would the pH of the solution be if of 0.250 M NaOH were added? (c) What would the pH be if of 0.40 M HCl

asked by Liam on February 22, 2015
63. ## Ochem

What would be a newer more efficient method to do the qualitative analysis of an unknown. I am trying to find a good method and asses its greenness (Green chemistry) and say why it better than the common method used. please help as soon as possible. This

asked by Jamshid on June 20, 2006
64. ## Pre-Calc

An open box with a volume of 1500cm^3 is to be constructed by taking a piece of cardboard of 20 cm by 40 cm, cutting squares of sides length x cm from each corner and folding up the sides. Show that this can be done in two different ways, and find exact

asked by Andy G on January 14, 2014
65. ## math

1. 4x^2-13x=12 I need to solve this problem by factoring or using the quadtratic formula. I am stuck when using the quadtratic formula method. Please advise how to do this. 2. 5x^2+42=0 How many roots exist in this equation and what type are they?

asked by bob on October 29, 2007
66. ## chemistry

Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container

asked by CHEM on March 16, 2009
67. ## chemistry

Consider a system consisting of a cylinder with a movable piston containing 10^6 gas molecules at 298K at a volume of 1L. Consider the following descriptions of this system: 1. Initial system 2. Starting from the initial system, the volume of the container

asked by CHEMistry on March 16, 2009
68. ## CHEMISTRY

Dye of iodine is prepared by dissolving in ethanol , and 1% ( one percent ) of this solution contains 10 g of solute in 1000 g of solution 1) how many grams of solvent is there in the solution ? 2) how many moles of solute ( I2) is there? 3) what is the

69. ## Chemistry

An aqueous KNO3 solution is made using 72.5 grams of KNO3 diluted to a total solution volume of 2.00 liters. If the molarity of the solution is .359 M and the molality of the solution is .354, what is the mass percent of the solution?

70. ## algebra

3. Moving Costs Moving company A charges \$80 plus \$55 an hour to move households across town. Moving Company B charges \$75 an hour for cross-town moves. For what lengths of time is Moving Company B more expensive than Moving Company A? Write an inequality

asked by Tammy on August 21, 2011
71. ## Chemistry

Consider the following equilibrium: H2CO3 (aq) ↔ H2O (l) + CO2 (g) Which direction will the equilibrium shift (left or right) if we: Increase the pressure by decreasing the volume of the system: Increase the pressure by adding Argon to the system:

asked by Anonymous on February 19, 2013
72. ## AP Chemistry

If 25 mL of a 0.5 M NaOH solution were needed to reach the equivalence point of a 20 mL HCl solution, what was the initial analyte concentration? I am confused how to solve this problem, and also, what does "initial analyte concentration" refer to? Thanks!

asked by Megana on February 7, 2018
73. ## chemistry

A solution of fructose, C6H12O6, a sugar found in many fruits, is made by dissolving 22.0 g of fructose in 1.00 kg of water. What is the molal concentration of fructose the solution? What is the mole fraction of fructose in the solution? What is the mass

asked by Anonymous on March 13, 2015
74. ## Physics

Vector A has a magnitude 12m and is angled at 60 degrees counterclockwise from the positive direction of the x axis of an xy coord. system. Also. Vector B = (12m)i + (8m)j on that same coord system. Rotate the system counterclockwise about the origin by 20

asked by Rick on June 27, 2010
75. ## physics

In what circumstances can the angular velocity of system of particles change without any change in the system\'s angular momentum? This cannot happen under any circumstances. This can happen if an external net torque is applied properly to the system. This

asked by lol on February 4, 2014
76. ## physics

A 33.0 kg box initially at rest is pushed 5.95 m along a rough, horizontal floor with a constant applied horizontal force of 145 N. If the coefficient of friction between box and floor is 0.300. find: the work done by the applied force the increase in

asked by gene on October 14, 2011
77. ## Physics

A 39.0 kg box initially at rest is pushed 4.50 m along a rough, horizontal floor with a constant applied horizontal force of 135 N. If the coefficient of friction between box and floor is 0.300, find the following. (a) the work done by the applied force J

asked by Vince on April 28, 2013
78. ## calculus

Having trouble with a section in my summer assaignment, and my teacher doesnt respond to his e-mails... If someone could help with these few questions, it would help a lot. Thanks. Solve for y in terms of t: 1)ln(50-3y)=-.5t+ln5 2)2e^(-y/3)=t+4

asked by Charles on August 23, 2011
79. ## law

I have write a paper on a way to solve street racing and under age drinking using the COPPS philosophy and write a formal report to the chief of police. I have to use the S.A.R.A method (Scanning, Analysis, Response and Assessment) Can someone please help

80. ## College Algebra

Find the inverse of the function below. Graph the function below and the inverse function. Determine the domain, range, and asymptotes of the function below and the inverse function. Please show all of your work. Show both graphs. f(x)=2ln(3-x)+6

asked by Jo on January 18, 2012
81. ## chemistry

Take a cup of water, add sugar, and stir. If the resulting solution contains sugar crystals that do not dissolve, the solution is said to be? a)an unsaturated solution b)a saturated solution c)a homogeneous solution d)none of the above Is it d -

asked by Thelma on July 23, 2010
82. ## Mathematics

1. Show that Sin3è - Cos2è = (1 - Sinè)(4Sin^2è + 2Sinè - 1). Without using a calculator, show that è = 18 degrees is an exact solution of the equation Sin3è = Cos2è. Justifying your answer, find the exact values of: i) Sin18 degrees. ii) Sin234

asked by Edwards on August 3, 2011
83. ## Chemistry-help

Hi, I have a question on Gas Chromatography(GC). The following were injected into the GC system: - 1) 1% sample solution in acetone 2) a 500 times dilution of item 1) The retention time of the main peak in the diluted sample solution 2) shifted by ~ 2min.

asked by jess on September 19, 2011
84. ## Math

Lucia is hoping that Angela will buy her a geometrically interesting piece of land on which he will build a mansion. Lucia has said that she will only buy the land if it costs less than \$4.00 per square foot. The plot shown below is listed for \$453,175. Is

asked by Tim on May 2, 2016
85. ## Math help

Help with any of these would be greatly appreciated! THANK YOU! 1. How would i solve 3x^2 - 4 = 0? And in simplest radical form? 2. How would i determine the values of 'k' if the graph y=2x^2-2x+3k intersects the x-axis at two distinct points? 3. The path

asked by Rachel on July 23, 2008
86. ## Mat/117 DQ2

Quadratic equations may be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the pros and cons of each of these methods? Please provide examples. When might each method be most appropriate? Which method do you

asked by Rose on February 27, 2012
87. ## Psychology

You are conducting research on sex differences in emails.Your hypothesis is that men use more declarative statements and women use more questions.What might be the advantages of using the archival method?What migt be the disadvantages of using archival

asked by Gwendolyn Towns on October 28, 2010
88. ## maths

guys need help on ODE questions, i just need you guys to tell me what method to use for the following equations and i will try solve them myself: a) (2y+tany)dx +(x-x^2(tany))dy=0 b) y'=(e^x)(2y+(e^x))+y(1+y) c) y'=1+y^2-x^2 any hints will be good also. XD

asked by lim on September 24, 2016

Using the simplex method, solve the following linear programming problem: Maximize: P= 5x+2y Subject to: 4x+3y < or equal to 30 2x-3y < or equal to 6 x > or equal to 0, y > or equal to 0.

asked by Colleen on December 9, 2012
90. ## Pre-Algebra

how would I go about doing this problem? a (division sign) 4.9 = 8.33 Since this equation has a division sign...how would I solve it? Can I still do the original subtract and add method?...

asked by SlightlyConfused:/ on November 17, 2015

how would I go about doing this problem? a (division sign) 4.9 = 8.33 Since this equation has a division sign...how would I solve it? Can I still do the original subtract and add method?...

asked by SlightlyConfused:/ on November 17, 2015
92. ## chemistry

an unsaturated solution is made by completely dissolving 20.0 grams of NaNO3 in 100.0 grams of water at 20.0 degrees celcius. show a corrct numerical sat up for calculating the number of moles of nano3(gram-formula mass = 85.0 grams per mole) used to make

asked by nicole on April 23, 2012
93. ## Maths

the histories and development of Hindu-Arabic number system and the egyptain number system? plez.. i'm so confuse with these i need good explanation about this two system

asked by LAy on April 15, 2010

A system of equations is given below: y = 3x + 4 2x + 3y = 10 Which of the following steps could be used to solve by substitution? (4 points) 3x + 4 = 2x + 3y 2x + 3(3x + 4) = 10 2(3x + 4) + 3y = 10 3(y = 3x + 4) (I don't understand this at all and I've

asked by Reb on May 4, 2016
95. ## math

I am having a really hard time with these! 1. Solve system of equations x+3y=7 (1) x=8-3y (2) 2. find slope (9,8) (10,-7) 3. translate into an algebraic expression The product of 46% and some number

asked by deedra on January 5, 2009
96. ## Algebra

Solve the following system of linear inequalities by graphing. 3x+4y=0 Try this site: http://www.purplemath.com/modules/ineqgrph.htm

asked by Graphing Help! on June 3, 2007
97. ## Algebra Concept check

1. Anna has 12 bills in her wallet, some \$5 and some \$10. The total value of the bills is \$100. How many of each bill does Anna have? 2. Tripling the greater of two consecutive even integers gives the same result as subtracting 10 from the lesser even

asked by Anonymous on May 12, 2010
98. ## chemistry - Molar enthalpy

When 10.0 g of KOH is added to 100.0 g water, the solution's temperature increases from (25.18 C) to (47.53 C). What is the molar enthalpy of solution for KOH? i tryed q=(m)x(c)x(delta T) didn't really work. i got 22.35 J do i use that to find the molar

asked by Rose Bud on February 29, 2012
99. ## Algebra

Job A pays Edith \$4 an hour. Job B pays her \$8 an hour. She will work both jobs. She is able to work no more than 15 hours a week. She wants to earn at least \$80 a week, working a combination of both jobs. Write a system of inequalities that can use used

asked by Zero on January 1, 2016
100. ## algebra 2

The pH of a solution is given by the formula pH = -log H+ , where H+ is the concentration of hydrogen ions in moles per liter in the solution. Use this formula to solve the problem. Round answer to one decimal place if necessary. Find the pH of a sample of

asked by jay on July 14, 2011