# 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 170
1. ## Physics

During an adiabatic process, the temperature of 6.50 moles of a monatomic ideal gas drops from 525 °C to 169 °C. What is the work done? Here is my work, is it correct? T1 = 525+273 = 798 K T2 = 169 + 273 = 442 K work done = R[T2-T1]/1-gamma = 8.314[525 -

asked by Kayla on November 30, 2016
2. ## Algebra (Re.: Reiny)

The fact that there was that nice symmetry to the question, makes it easier than it first appears. I had it as: (a/b + b/a)÷(b/a - a/b) look at (a/b + b/a) the common denominator for this would be ab, so a/b + b/a = (a^2 + b^2)/ab similarly for (b/a -

asked by Sara on July 20, 2007
3. ## maths need help

angles of a certain polygon are in arithmetic sequence. The smallest interior angle measures 80 degrees and the largest interior angle measures 160 degrees. How many sides does the polygon have? Plz show me work i don't know it at all plz

asked by phum on September 24, 2016
4. ## physics

A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of

asked by Tim on June 8, 2011
5. ## Math

A multiple choice quiz contains five question. Each question has four answer choices. Michael is not prepared for the quiz and decides to guess for each question. What is the probability that Michael will get at least one question correct? What is the

asked by Ashley on April 29, 2013
6. ## physics

3. A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage

asked by Tim on June 8, 2011
7. ## science

A man lifts various loads with the same lever. The distance of the applied force from the fulcrum is 1.00 m, and the distance from the fulcrum to the load is 0.250 m. What is the mechanical advantage of the lever? What is the ideal mechanical advantage of

asked by Anonymous on June 8, 2011

In how many different ways can five cent and eight cent stamps be used to make \$2.43? In process, show the different combinations of stamps that make \$2.43. In solution, tell how many ways you found. Pls help me pls.

asked by ary on April 16, 2015
9. ## math

there is a water resivoir benteth a circular garden 2 supply a fountain n the garden.the resivoir has a 26-inch diameter.the garden has a 12 foot diameter.how much of the garden does not contain the water resivoir? plz show work

asked by charolette on May 19, 2011
10. ## Math

A proton has a size of 1.23x10^-11 and an electron has a size of 1.4x10^-8. How many times smaller is an electron than a proton? Show your work. If I divided 1.23x10^-11 and 1.4x10^-8, wouldn't 1.4x10^-8 be the numerator or the denominator? Please help!

asked by Monica on October 17, 2013
11. ## Physics

A 5.0 µC point charge is moved within an electric field and has an electric potential energy change of 10.0 J. What is the electric potential difference before and after the charge was moved? Show work. (µC = 1.0 × 10–6 Vq=energy so delta V must be 10

asked by Pat on May 19, 2012
12. ## Math

A scale drawing of an American flag is 10 inches long and 6 inches tall. The actual flag is 3 ft tall. Find the actual perimeter and area of the American flag. Show your work.

asked by Y on September 15, 2018
13. ## Physics

A mass (m1) is connected by a light string that passes over a massless frictionless pulley to a mass (m2) sliding on a horizontal surface. The coefficient of kinetic friction between the m2 and the surface is 0.25. If m1=1.0kg and m2=2.0kg then what is the

asked by Bex on September 25, 2016
14. ## chemistry URGENT (1)

What mass (in grams) of CaCl2(s) must be dissolved in pure water at 10.0 deg Celsius to make a 26.4 mL solution and to increase the solution temperature to 16.4 deg Celsius? Assume that there is no heat loss from the solution and that the solution has the

asked by Anonymous on November 16, 2008
15. ## chemistry

What mass (in grams) of CaCl2(s) must be dissolved in pure water at 10.0 deg Celsius to make a 26.4 mL solution and to increase the solution temperature to 16.4 deg Celsius? Assume that there is no heat loss from the solution and that the solution has the

asked by Anonymous on November 16, 2008
16. ## Chemistry

1)A solution prepared by adding 0.400 mol of acetic acid (pKa = 4.74) and 0.400 mol of sodium acetate to 100.0 mL of water. The pH of this buffer solution is initially 4.74. Predict the final pH when 55.0 mL of 1.10 M NaOH is added to solution 2) A

asked by Maya on December 1, 2016
17. ## chemistry

If a solution contains 255ml of ethanol in a 375 ml solution, what is the % of ethanol in that solution?

asked by Twynna Andrews on January 26, 2011
18. ## chemistry

If a solution contains 255ml of ethanol in a 375 ml solution, what is the % of ethanol in that solution?

asked by Twynna on January 28, 2011
19. ## MATH

The solution below corresponds to an inequality involving a quartic function. Write a possible quartic polynomial inequality that matches the solution. Prove that your inequality matches the solution. x < 4 and x > 7

asked by ken on January 6, 2018
20. ## mathematics

The solution below corresponds to an inequality involving a quartic function. Write a possible quartic polynomial inequality that matches the solution. Prove that your inequality matches the solution. x < 4 and x > 7

asked by mack on January 7, 2018
21. ## chem 215

16.6 ml of a solution is run into an empty flask, from a buret. The mass of the empty flask is 145.0 g. The mass of the flask plus solution is 158.5 g. The density of the solution is _____ g/ml.

asked by Anonymous on October 7, 2015
22. ## Math

A custodian pours1/8 gallon of cleaning solution into each pail of water that she uses. how many pails of water and cleaning solution can the custodian make using 16 gallons of cleaning solution?

asked by Mel on March 25, 2015
23. ## math

A cone-shaped glass and a tin can are filled with water. The height of the cone is 12" (12 inches) and it has a radius of 1.5" (1½ inches). The can is 2 inches high and has a diameter of 4 inches. Which container holds more water? How much more water does

asked by Kate on June 13, 2016
24. ## Algebra

Your monthly commission as an appliance sales person is represented by the equation, S = 50x+450, where 50 is the rate paid for each appliance sold, x is the number of appliances sold, 450 is the base pay per month, and S is the salary. Complete the

asked by Kevin on February 10, 2014
25. ## Statistics

A gambling game works as follows: you flip a fair coin and roll a fair six-sided die. You will be paid \$2 if you roll a 6 and \$1 if you get a head and an odd number of spots. Otherwise, you have to pay \$2.50. a) What is the probability of rolling a die

asked by alle on November 4, 2017
26. ## Chemistry

Liquid octane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water. Suppose 5.71 g of octane is mixed with 5.0 g of oxygen. Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Be sure

asked by kai on October 24, 2018
27. ## English

I was referring to my previous sentence: they checked (in) their bags for cigarettes. I urgently need to check these sentences. I believe there are mistakes in the word choice,. Thank you. 1) Another blow (I need a synonym) to traditional beliefs came from

asked by Henry2 on November 9, 2011
28. ## Computer Science

Computers are used worldwide, but most of the major operating systems originated in English-speaking countries. Take a look at the operating system that you use in the context of global users who might not speak English and who might not have grown up with

asked by Nica on March 28, 2014
29. ## Physics

Your projectile launching system is partially jammed. It can only launch objects with an initial vertical velocity of 42.0 m/s, though the horizontal component of the velocity can vary. You need your projectile to land 211 m from its launch point. What

asked by Alexandra on September 13, 2014
30. ## Computer Science

Can global user use the windows 7 operating system? What are 5 things that would need to be changed for global users to use windows operating system?

asked by Nica on March 30, 2014
31. ## Algebra

40. The graph of the following system yields perpendicular lines. x + 2y = -10 -4y = 2x + 20 (True) 48. The graph of the following system yields parallel lines. x - 2y = 1 y = -3x + 10 (False) Thanks -MC

asked by mysterychicken on May 10, 2011
32. ## Science

What body system does coronary heart disease affect? Also How does this disease affect normal homeostasis of the body system

asked by Gabby on July 10, 2014
33. ## Constitutions and Government

Which statement correctly describes U.S. constitutional government? 1. U.S. government follows a federal system that divides powers. 2. U.S. government has relied on the same unchanged constitution for 200 years. 3. U.S. government was the first to use a

asked by \$crim on December 11, 2017
34. ## Physics

Hi I am having difficulty with this question: Consider a simple “system” of a thin lens with focal length 12 cm, an input plane at 25 cm in front of the lens and an output plane at 11 cm beyond the lens. a) Find the matrix for the simple system b) Why

asked by John J.B on March 12, 2016
35. ## Astronomy

Which one supports the solar nebula theory of the origin of the solar system? a.Disks are rare around young stars. b.Disks are common around young stars. c.The sun is the least massive object in the solar system. d.Planets are round.

asked by Stephanie on November 23, 2010
36. ## math

In the percent-of-sales method, an increase in dividends

asked by Mike on May 25, 2009
37. ## algebra

32x+8=? Which algebric expression has the same value, explain method, please.. 4(x+2) 8(4x+1) 4(8x+1) 8(4x+8)

asked by caroline on January 12, 2010
38. ## algebra

how to graph point-plotting method this equation? x=y^2 + 2

asked by wanda on September 17, 2012
39. ## Anthropology

Why is the scientific method the most accurate way that humans have developed?

asked by Macy on October 6, 2015
40. ## calculus

integrate x*(x+1)^9dx I believe the substitution method is the proper way?

asked by Shannon on December 6, 2009
41. ## science

What method is use to determine the location of protein synthesis?

asked by shirui on November 21, 2009
42. ## How do you use the substitution method in math?

x + 6 / 7 = 6x + 78 / 49 My mind is a bit rusty and I can't remember how to use this method

asked by Anonymous on November 28, 2007
43. ## math

factor by the method of using trial factors....2t squared + 4t - 30

asked by Lynda Smith on June 11, 2010
44. ## management of Institutional Risk

How can organizations identify risk? Is one method more effective than another? Why or why not?

asked by Booboo on July 6, 2011
45. ## digital circuits & systems

Explain the method of constructing karnaugh maps.

asked by nakul on July 29, 2015
46. ## Calculus

Evaluate using tabular method: integral e^(2x)cos3xdx

asked by Alice on September 1, 2016
47. ## science

Sedimentation as a method of water purification results in

asked by sa on May 18, 2008
48. ## Government

what are the two steps involved in the second method of amending the Constitution?

asked by Angela on February 25, 2009
49. ## bio 11

must the steps in the scientific method always be followed in the same order? Explain.

asked by alyssa on September 4, 2013
50. ## algebra

wat is the answer to the following equation by using the substitution method? x=6y-4 x=-2+28

asked by ki ki on July 2, 2010
51. ## Math

I need help solving this equation using the Factoring Completely method. X⁴-x³

asked by Phil on February 1, 2013
52. ## Maths

How would I find the vertex of the parabola y = x^2 – 2x + 4 ?? could some one explain the method to me ?

asked by tim on June 9, 2007
53. ## algebra

use inverse matrix method to determine x,y and z of...... 3x+3y+3z=4 x-y-z=0 20x+0+z=5

asked by grace on April 4, 2019
54. ## FIFO METHOD

COULD U SHED SOME LIGHT OFN FIFO METHOD

asked by NOAH on July 30, 2010
55. ## algebra

Factorise 4x^2-7x+3= and 6x^2+10x-5= Thanks Method would be good-as I am stuck.

asked by George on November 2, 2010
56. ## geology (science)

what method is used to determine the age of a rock formation?

asked by scooby9132002 on April 26, 2009
57. ## science

how the method you mentioned can prevent food spoilage

asked by Banbi on September 2, 2012
58. ## integration (calculus)

Find the indefinite integral. ∫((e^-x-1)/(e^-x + x)^2) dx I am trying to use the substitution method. u=e^-x + x du= -e^-x+1 dx Right so far?

asked by Steff on July 7, 2011
59. ## Math

How to differentiate e^e^x? Ans at wolfram is e^(x+e^x). I need the calculation method.

asked by Ifi on October 28, 2012
60. ## college

Can someone give me an example of a situation where "Scientific method" of psychology would be used.

asked by University of Phoenix on November 26, 2010
61. ## Algebra

Solving for systems of equation using the elimiation method. 3x-2y=x-6 3(x+2y)=3

asked by G on April 3, 2008
62. ## Science

Where can I look and/or what website can I look at for the different components of the scientific method process? Please help

asked by Matt on October 10, 2016
63. ## Algebra

Using the ac method factor the trimonials. 15x^2 + 31x+2=

asked by Michele on April 30, 2014
64. ## accounting

How is the receipt of a dividend recorded under the equity method?

asked by Karla on March 28, 2010
65. ## calculus

Use Newtons method to find the roots of the equation f(x)=x^3-3x-3 when x1=2

asked by godfrey on May 21, 2019
66. ## English

Quick question. Can wittiness be a method for satire?

asked by Justine on July 4, 2016
67. ## Science

the characteristics of the inquiry process or the scientific method

asked by HELP!!!! on September 25, 2018
68. ## geometry

what is a concave polygon using the classify and differentiate method

asked by sarah on September 26, 2013
69. ## Algebra

Using the ac method factor the trimonials. 15x^2 + 31x+2=

asked by Michele on April 30, 2014
70. ## Math

n^3+2n is the multiple of 3 prove it by math induction method

asked by Hjm on August 17, 2013
71. ## biology

How to write an outline for scientific method experiment

asked by ami on September 8, 2011
72. ## CALCULUS

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD (X^4-16)^5 X^3 DX

asked by renee on June 28, 2011
73. ## history

which of the following was not a new weapon or method of warfare in world war 1?

asked by lizzy on November 7, 2017
74. ## math

what is square root of 0.31428 from divison method.

75. ## Chemistry

So,my second method is correct isn't it? The answer is -78.4kJ?

asked by Meenaakshi on March 22, 2012
76. ## understanding observation behavior

Which of the following method depends on heavily on the observers memory.

asked by James on September 28, 2012
77. ## AP Chemistry

What is the Dumas Method in regards to the molas mass of a gas?

asked by D on November 4, 2010
78. ## CALCULUS

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD DX/1+5X

asked by renee on June 28, 2011
79. ## Math

divide using the long division method. 6x^3-57x-13/3x+9

asked by Keonn'a on November 27, 2018
80. ## CALCULUS

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD ç(X^4-16)^5 X^3 DX

asked by renee on June 28, 2011
81. ## CALCULUS

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD çX^3+X^2/3X^4+4X^3 DX

asked by renee on June 28, 2011
82. ## chemistry

would the method of spectrophotometry or redox titration be a more accurate?

asked by tiffany on February 23, 2009
83. ## math, correction

Graph each of the following equation, using the intercept method. 2x + 3y = 6 so the solutions are (0,2) and (3,0) yes.

asked by jasmine20 on January 14, 2007
84. ## math

what is square root of 0.31428 from divison method.

85. ## calculus

Evaluate the integral S x/(sqrt(3x-1))dx Use U-Substitution method.

asked by John on February 23, 2012
86. ## calculus

Use Newtons method to find the roots of the equation 1/x=1+x^3

asked by Drew on April 4, 2012
87. ## CALCULUS

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD X^3+X^2/3X^4+4X^3 DX

asked by renee on June 28, 2011
88. ## math

what is the prime factorization of 34 in tree diagram method

asked by asdfghjkl; on August 17, 2010
89. ## calculus HS

Analtical method to evaluate Lim X -> -infinite

asked by Jane on October 26, 2008
90. ## Match

Describe two ways you could evaluate 37% of the sum of 27 3/5 and 15.9. Tell which method you would use and why? THANK YOU!

asked by Gabriel on November 18, 2015
91. ## Calculus

lim x->1 (x^47-1)/(x^9-1) With what method do I factor them with? Pascal triangle?

asked by sh on September 21, 2010
92. ## CALCULUS

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD X^3+X^2/3X^4+4X^3 DX

asked by renee on June 28, 2011

i need help with identify population sample and sampling method

asked by chris on November 23, 2009
94. ## math

Describe two ways you could evaluate 37% of the sum of 27 3/5 and 15.9. Tell which method you would use and why? THANK YOU!

asked by Kyle on September 24, 2015
95. ## Calculus

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD çe^3X DX

asked by renee on June 28, 2011
96. ## Calculus

Find the volume using the shell method - about the x-axis x=y^2/3

asked by Tiffany on April 12, 2013
97. ## chemistry

Can methane and oxygen be separated. If yes, can anyone please mention the method

asked by daniel on May 11, 2015
98. ## Chemistry

I need the name of the following compounds using the IUPAC method: NH2 CH2 | | Br\/ \/\/

asked by Chris on April 25, 2011
99. ## BIO

how is the scientific method used to create hypotheses or an expermient?

asked by Anonymous on July 26, 2011
100. ## CALCULUS

FIND EACH INDEFINITE INTERGRAL BY THE SUBSTITUTION METHOD e^3X DX

asked by renee on June 28, 2011