# 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 310
1. ## algebra

can someone plz show the steps to solving equation. i believe the answer is 36. (6^5)/(6^3)

asked by Randy on June 13, 2012
2. ## Chemisrty

would anyone be able to help me with mertic conversions? A table would be useful. would you be able to show me an example of how to convert units? please help! thank you so much!!

asked by AyPa on September 5, 2010
3. ## English

Write a sentence using the word: programme to show the meaning.

asked by chris on March 24, 2018
4. ## Communication Studies

I need to find a short feature story. Can someone please show me some examples of these? Thanks!

asked by Alicia on March 7, 2010
5. ## Math -Urgent!!!

List all the possible rational zeros of f(x)=3x^3-x^2+2x=2. Please help me. I don't understand how to do this. Can someone show me please.

asked by Tabby on April 29, 2012
6. ## math

Write 0.026 As a sum using powers of 10 to show place value

asked by kim on February 11, 2013
7. ## physics

show that none of the principal moments of inertia can exceed the sum of the other two Please help me thank you

asked by rhea on December 4, 2012
8. ## Math

How many people can fit in a 1.5 tonne elevator? Please show working out.

asked by Angel on June 14, 2015
9. ## math

Show how commutative property of addition works using the numbers 2, 3, & 5

asked by cody on September 15, 2010
10. ## math

What is 461,592 x 308? Show and explain answer

asked by Anonymous on January 29, 2013
11. ## Linear Algebra

Let W be the set of all polynomials p(t) in P3 such that p(0)=0. Show that W is a subsapce of P3 and find a basis.

asked by Jaime on November 19, 2011
12. ## math (differential equation)

show that y sub n=cos(ncos^-1(x)) satisfies the differential equation: (1-x^2)(d^2y/dx^2)-x(dy/dx)+n^2(dy/dx)=0

asked by shoosh on March 3, 2013
13. ## math(new)

i need a diagram to show me this new math and how it works. i am not understanding the concept

asked by norma on October 25, 2010
14. ## Life orientation

Show the link between intrapersonal conflict and initiating relationships

asked by Manna on February 24, 2019
15. ## physics hw urgent please

show how you would you arrange to find f in terms of v,m and r from four equations below. f=1/t, f=ma,v=2piR/T,a=v^2/R Thanks

asked by jacob on May 14, 2011
16. ## life orientation

Show the link between intrapersonal conflict and initiating relationship

asked by mcedisi on March 11, 2015
17. ## Chemistry

Answer the following questions by referring to the Cu-Al phase diagram shown below. (a) What is the lowest temperature at which a liquid can be found in a system of any composition of Cu-Al ? (b) A common alloy composition used in airplanes is 4 at. % Cu -

asked by Chemgnam Style on December 15, 2012
18. ## Chemistry

Answer the following questions by referring to the Cu-Al phase diagram shown below. (a) What is the lowest temperature at which a liquid can be found in a system of any composition of Cu-Al ? (b) A common alloy composition used in airplanes is 4 at. % Cu -

asked by Ling on December 13, 2012
19. ## Chemistry

Answer the following questions by referring to the Cu-Al phase diagram shown below. (a) What is the lowest temperature at which a liquid can be found in a system of any composition of Cu-Al ? (b) A common alloy composition used in airplanes is 4 at. % Cu -

asked by Odesa on December 11, 2012
20. ## discrete math

Fill in the blanks: For all sets A and B, if A is in the set of B, then A union B in in the set of B. Proof: Suppose A and B are any sets and A in in the set of B. [we must show that __________] Let x be and element of _______. [we must show that

asked by heidi on April 15, 2011
21. ## Discrete Math

1. Assume that n is a positive integer. Use the proof by contradiction method to prove: If 7n + 4 is an even integer then n is an even integer. 2. Prove: n is an even integer iff 7n + 4 is an even integer. (Note this is an if and only if (iff) statement.

asked by Math help on February 21, 2008
22. ## Calculus

I have several problems that I don't know how to do. I will post one now and hope that someone can help me. The problem is: A cylinder made of playing dough with dimensions h=10cm, and r=1cm, is being stretched from both ends. (a) If V is the volume of the

asked by Kristal on November 12, 2006
23. ## Physics

Please help!!! Physics test!? I have a physics test tomorrow on projectile motion, and I don't feel ready for it. I'm having trouble in the class and I need to ace this test. The problem is I get confused when I get a problem. I don't know how to proceed.

asked by Mike on October 9, 2012
24. ## math

If two dice are rolled and their faces noted, find each of the following probabilities: a) the sum of the two dice is 8 b) both dice show even numbers c) the sum of the two dice is 8 OR both dice show even numbers d) the sum of the numbers is 7, given that

asked by Anonymous on October 28, 2016
25. ## Probability and Statistics

Hi, I am having a lot of trouble with Normal Distribution. I do online school and this lesson didn't really explain how to exactly complete the following problems. My teacher said that the answers to the problems below were all incorrect. I would greatly

asked by anon on May 17, 2017
26. ## physics

a wheel having diameter 2m starts from rest and accelerates uniformly to an angular velocity of 75 revoulutions per minute in 5s. calculate its angular acceleration? Q;- one of the rectangular components of velocity of 80km/hr find other component? Q:-the

asked by vishal on September 27, 2010
27. ## pre calculus

use the seven step method to graph the following rational function: f(x)=3x^2+x-4/2x^2-5x a. determine the symmetry of the function. b. find the x and y intercepts. c. find the verticle asymptote d.find the horizontal asymptote e.plot the points between

asked by asia on March 26, 2013
28. ## math

Aaron Grider buys a home for \$120500. After a 15% downpayment, the rest is financed at 8% interest for 9 years. What equal quarterly payments will be required to amortize this mortgage loan? What is the total amount of interest Aaron will pay on the loan?

asked by cat on November 4, 2015
29. ## chemistry

A 23.596 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 79.504 g of water. A 13.803 g aliquot of this solution is then titrated with 0.1098 M HCl. It required 29.02 ml of the HCl solution to reac

asked by Mike on November 14, 2011
30. ## Chemistry

A 23.596 g sample of aqueous waste leaving a fertilizer manufacturer contains ammonia. The sample is diluted with 79.504 g of water. A 13.803 g aliquot of this solution is then titrated with 0.1098 M HCl. It required 29.02 ml of the HCl solution to reac

asked by Mike on November 14, 2011
31. ## CTU

Part IV: You find that a small business loan in the amount of 50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate

asked by Johjoh on August 13, 2012
32. ## chemistry

Answer the following questions by referring to the Cu-Al phase diagram shown below. (a) What is the lowest temperature at which a liquid can be found in a system of any composition of Cu-Al? correct (b) A common alloy composition used in airplanes is 4 at.

asked by danhil on December 17, 2012
33. ## Health

How can tobacco affect the circulatory system? A. Decreases heart rate B. Raises blood pressure C. Softens the arteries D. Causes ulcers How can tobacco affect the body? A. Increases appetite B. Makes teeth whiter C. Slows heart beat D. Causes nausea How

asked by emily on May 8, 2018

A flight attendant pulls her 70.0 N flight bag a distance of 263 m along a level airport floor at a constant speed. The force she exerts is 41.0 N at an angle of 52.0° above the horizontal. (a) Find the work she does on the flight bag. (b) Find the work

asked by brittany on April 15, 2010
35. ## science

49. A researcher writes a grant proposal to repeat an experiment that was recently published by another researcher. Which of the following statements best supports the grant proposal? A. Funding this grant proposal will allow this laboratory to continue to

asked by keia on August 19, 2016
36. ## chemistry

A 1.00-g sample of piperazine hexahydrate is dissolved in enough water to produce 100.0 mL of solution and is titrated with 0.500 M HCl. What is the initial of the solution, before any titrant is added? Piperazine,HN(C4H8)NH, is a diprotic weak base used

asked by shae on March 30, 2011
37. ## Chemistry Equation

In a lab expirement you add copper(II)nitrate to pure zinc. Write a balanced equation for this expirement and predict if a reaction will occur. I THINK Bob Pursley answered this question a day or so ago. Zinc is higher in the activity series than copper;

asked by chrissy on January 6, 2007
38. ## Chemistry

I had to find the absolute zero from a graph with the following points: Temperature (K) / Volume (mL): 318 4.5 308 4.3 303 4.1 294 4.0 284 3.9 275 3.7 271 3.2 I graphed the points (with the temperature on the y-axis because the lab indicated a vertical

asked by AJ on October 30, 2008
39. ## physics

A mover pushes a couch a distance of 4 m to the top of a ramp into the back of a truck using 500 N of force. A) What is the work input of the mover? B) What is the mover’s power if the task takes 10s? C) If the mass of the couch is 100 kg and the back of

asked by jaslyen on November 6, 2011
40. ## n/a

Inter-department Services Step Method : O'brain's Department Store Allocates the Cost of personnel and Payroll to three retail Sales Department Housewares , Clothing and Furniture . In addition to providing services to the operating department. Personnel

asked by Anonymous127 on June 4, 2011
41. ## Chemistry

Oxalic acid, found in the leaves of rhubarb and other plants, is a diprotic acid. H2C2O4 + H2O ↔ H3O+ + HC2O4- Ka1= ? HC2O4- + H2O ↔ H3O+ + C2O42- Ka2 = ? An aqueous solution that is 1.05 M H2C2O4 has pH = 0.67. The free oxalate ion concentration in

asked by Ashley on November 15, 2016

1. Convert 4.0 kilometers (km) to meters (m). (1 point) 0.04 m 40 m 400 m 4,000 m 2. For his science project, Austin wants to determine if the pH of standing rainwater changes over time. He collects a jar of rainwater and places it indoors in a spot that

asked by BLOB on September 25, 2016

The Evolution of Inequality James K. Galbraith, a Government/ Business professor at the University of Texas in Austin, has gathered data and other sources to analyze the evolution of inequality in the world at large. Galbraith in junction with a group of

asked by christi on February 10, 2008

what are some assistance plans human resources for a health care administrator should have in the company's strategic plan? The obvious ones (obvious to me, that is!) are ~~medical coverage for the employee, with buy-in possibilities for employee's family

asked by jean on July 27, 2007
45. ## chemistry

A student needs to make a dilution from a stock solution. The stock solution is 2.) M NaCl. How much should the student use of the 2.0 M NaCl to make 1.0 L of 0.05M NaCl diluted stock.

asked by Marilyn on April 6, 2011
46. ## Corporate Finance

I have answered all of the following except for the payback period, I do not understand how to do it. Can you please explain how to do the payback period? Texas Roks, Inc. is considering a new quarry machine. The costs and revenues associated with the

asked by Miss Patte on October 26, 2015
47. ## social sciences

Consider the following numerical version of the IS-LM model: C = 60 + 0.6Yd I = 150 – 10i YD = Y – T T = 200 G = 250 Real money demand: (M/P)d = (40 + 0.1 Y – 10i)P Real money supply (M/P)s = 80 P = 2 Where Y is output, Yd is disposable income, C is

asked by ismail on April 23, 2009
48. ## math

A company has three sales departments (local, regional, and national) at each of several locations across the United States. Each local sales department has 120 employees. The company wants to survey its employees to determine the most effective sales

asked by Anonymous on April 29, 2019
49. ## statistics

Suppose the method of tree ring dating gave the following dates A.D. for an archaeological excavation site. 1248 1187 1199 1236 1206 1241 1185 1288 1239 Find an 80% confidence interval for the mean of all tree ring dates from this archaeological site.

asked by Anonymous on November 13, 2010
50. ## Algebra

(I'm so lost with all this algebra so can someone please help me? I have tried to put some answers in so please tell me if any of my answers are wrong and help with the ones left blank). 2. As you are leaving the community, you notice another new community

asked by LeAnn/Needs turned in within an hour on November 17, 2009
51. ## College Algebra

(I'm so lost with all this algebra so can someone please help me? I have tried to put some answers in so please tell me if any of my answers are wrong and help with the ones left blank). 2. As you are leaving the community, you notice another new community

asked by LeAnn/URGENT on November 16, 2009
52. ## math

Which strategies can be used to solve this problem? Kathleen invited 28 people to her party. She plans to seat 8 people at the dining room table. She will put the rest at round tables with 4 people at each table. What is the fewest number of round tables

asked by diego on April 12, 2016
53. ## English

REVISED My passion for medical transcription arose because of my love for research and thirst for knowledge after losing my father from stroke complications. I have been curious about new diagnoses, medications, technologies, and new treatment options. As

asked by Evelyn on January 18, 2013
54. ## Biology

I am doing a lab on Dialysis to check if starch moves through the differentially permeable membrane of dialysis tubing.We did this by placing a dialysis tube filled with starch solution into a beaker filled with distilled water and a few drops of iodine. I

asked by Audrina on February 18, 2009
55. ## chemistry

Malic acid is a weak diprotic organic acid with K1 = 4.0x 10-4 and K2 = 9.0 x 10-6. (a) Letting the symbol H2A represent malic acid, write the chemical equations that represent K1 and K2 . Write the chemical equation that represents K] xK2 . (b)

asked by pinky on December 15, 2014
56. ## Chem (but i think its physics)

Ok so this problem appeared in my online chem homework, but it looks alot more like a physics problem. I have no idea how to do it A 203 lb man eats an order of French Fries consuming 250 Cal of food energy. Afterwards he feels guilty and decides to work

asked by D on February 3, 2011
57. ## Physics

After 35 minutes of jogging, at the 9-km point in a total 10-km race, jogger A is behind the leader and moving at the same speed. What would have to be your accelearation in order to catch up to the finish line? Assuming the leader maintains a constant

asked by George on January 10, 2009
58. ## finance

A company wants to buy a labor-saving piece of equipment. Using the NPV method of capital budgeting, determine the proposal’s appropriateness and economic viability with the following information: • Labor content is 12% of sales, which are annually \$10

asked by liza on November 18, 2010
59. ## Algebra

A sheet metal fabricator makes boxes from sheet of steel. Each sheet of steel has an area of 1500cm2. 6cm squares are cut from each corner and the edges are bent up to form a box with a volume of 3456cm3.What are the dimensions of each box? I was making my

asked by Emily on November 24, 2017
60. ## physics

A 10 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100 N parallel to the incline, which makes an angle of 20 degrees with the horizontal. If the coefficient of kinetic friction is .40 and the crate is pulled a

asked by Anonymous on October 23, 2007
61. ## physics

A 10 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100 N parallel to the incline, which makes an angle of 20 degrees with the horizontal. If the coefficient of kinetic friction is .40 and the crate is pulled a

asked by wency siatula on May 3, 2016
62. ## Physics

For the situation: "A moving crate slides to a halt on a rough surface" Does temperature increase, decrease, or not change? Are work and heat positive, negative, or zero? Does thermal energy increase, decrease, or not change? My answer key says temperature

asked by Courtney on November 16, 2014
63. ## physics

A 10 kg crate is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling force is 100 N parallel to the incline, which makes an angle of 20 degrees with the horizontal. If the coefficient of kinetic friction is .40 and the crate is pulled a

asked by Anonymous on October 22, 2007
64. ## Math: Equivalence Classes

Let R be the relation on ℤ+×ℤ+ defined by (a,b)R(c,d) if and only if a−2d=c−2b. 1. Find an equivalence class that has exactly 271 elements. 2. Is it true that for every positive integer n, there is an equivalence class that contains exactly n

asked by procrastinationEquation on August 14, 2014
65. ## social studies

I want to know about the jury system in the USA. Do they decise that a person is guilty or innocent in all cases of crime? Would you let me know something abut 'Jury"? Thank you.

asked by rfvv on November 12, 2009
66. ## Social Studies

What was an achievement of the Aztecs? A. utilizing a well-developed writing system B. developing the numeral zero C. the use of an aqueduct D. developing the first calendar

asked by i tried on November 19, 2018
67. ## science

how can i describe one type of heating system, and describe how it tansfers energy to warm that air inside the rooms?

asked by Solano on November 11, 2009
68. ## Chemistry

We're doing a spontentaity lab in chemistry and I wanted to make sure I was using the right equation to do the questions! Could someone make sure this is right?? q system = - (q water - q calorimeter)

asked by Alice on March 28, 2016
69. ## science

Which Windows feature allows you to personalize your computer system? A. My Pictures C. Default Programs B. Control Panel D. Computer

asked by Joanna on August 15, 2012
70. ## Science

You have a motion security light by your door. A cat run across it and the light turns on. What is the input of this system and what is the output?

asked by MATO on September 22, 2018
71. ## Chemistry

In the system A(g) + 2B(g) ⇔ 2C(g) + 2D(g) ΔH=21 kJ/mol, it is possible to increase the quantity of C by: a) adding a catalyst b) decreasing the [B] c) increasing the pressure d) increasing the temperature

asked by Andrea on May 15, 2012
72. ## college

The economic system of state support of manufacturing and trade, with an emphasis on domestic production for export trade, is known as

asked by staci on June 21, 2009
73. ## physics

if an object has covered first 30 m distance in 5 sec and other 40 m distance in 20 min.find the average speed in cgs system.

asked by srishti on June 16, 2014
74. ## algebra ll

the first equation of the system is mutiplied by 2,by what number would you mutiply the second equation to eliminate the x variable by adding. first:6x - 5y =21 4x+7y= 15 when i did the promblem i got 2 answers -3 or -2 im not sure which one

asked by Anonymous, on August 15, 2008
75. ## Geography

Why might a Confucian praise or criticize China’s current political system and its approach to economic and political change?

asked by Lee on April 11, 2017
76. ## math

THIS IS SYSTEM OF EQUATIONS:SUBSTITUTON Y=2X-8 X-Y=2 I KNO THAT U COMBINE SO IT WILL BE X-2X-8=2 WHICH WLL BE 3X-8=2 BUT I DON'T KNO HOW TO FINISH TH REST......CAN SOMEONE HELP ME....... IF DID SOMETHING WRONG PLEASE TELL ME

asked by kris on October 25, 2008
77. ## building a stair system

My stair system, call it a triangle, is 360 inches in diameter, and 77.5 inches high. what is the length and formula?

asked by Mark on July 24, 2017
78. ## chemistry

Can some nice chemist explain to me the system of naming compounds with roman numerals? Also while they are here, tell me exactly the difference between molecules and compounds. Thanks!

asked by jim on August 17, 2011
79. ## Science

You have a motion security light by your door. A cat run across it and the light turns on. What is the input of this system and what is the output?

asked by Joe T. on September 24, 2018
80. ## Biology

Explain why the visual perceptions that other animal have and why that sensory input would vary and be differ from our own “vertebrate” visual system.

asked by John Nguyen on November 28, 2007
81. ## Amaerican history

6.   Under the _______ system, Spanish conquistadores were rewarded with local villages and control over the local labor force.

asked by Sarah on June 20, 2011
82. ## ipc

According to the law of conservation of mechanical energy, if the only force acting on this pendulum is gravity, the total energy of the system is

asked by Anonymous on February 15, 2011
83. ## College Physics

For the system of two crates and a pulley in Figure P9.14, (m1 = 28.5 kg, m2 = 10 kg, mpulley = 8 kg), what fraction of the total kinetic energy resides in the pulley?

asked by Sydney on October 17, 2011
84. ## System analysis

suppose a system memory requirement is more than the available memory size. Will call it a software problem although the crisis is with the hardware? Why?

asked by Beta plus on October 9, 2009
85. ## Anatomy

The respiratory system moves approximately how many quarts of air each day? A. 12,000 B. 2,000 C. 1,200 D. 800 A

asked by Anonymous on January 14, 2018
86. ## physical science

a cars radio draws 0.25 A of current in the autos 12 volt electrical system. How much power in watts does the radio use?

asked by fred on March 17, 2017
87. ## CHEMISTRY

At 450oC the value of equilibrium constant for the following system is 6.59 x 10-3. If [NH3] = 1.23 x 10-4 and [H2] = 2.75 x 10-3 at equilibrium, determine the concentration of N2 at that point. N2(g) + 3H2(g)  2NH3(g)

asked by SHIV on April 10, 2014
88. ## Science

equilibrium constants for the following reactions 4Cu(s) + O2(g) 2Cu2O(s), K1 2CuO(s) Cu2O(s) + 1/2O2(g), K2 what is K for the system 2Cu(s) + O2(g) 2CuO(s) ?

asked by Roja on April 27, 2010
89. ## social studies

Which of the following was an achievement of the Mayas? 1) a system of canals in their main city? 2) the city of Tenochtitlan 3) a calendar 4) a strong army I think it is 1 but not sure. Thanks for your help.

asked by Jamie on September 12, 2017
90. ## Science

What is the function of the nervous system We are doing a project on organ systems in science and I can't find the function. HELP PLZ!! Cami

asked by Cami on March 13, 2019
91. ## Chemistry

In the system A(g) + 2B(g)  2C(g) + 2D(g) H=21 kJ/mol, it is possible to increase the quantity of C by: a) adding a catalyst b) decreasing the [B] c) increasing the pressure d) increasing the temperature - I think it is b ? Am i right?

asked by scilover on May 20, 2013
92. ## physics-speed

the mean volume folume flow of blood in the arterial system is X m^3 s^-1. the area of the aorata is Y m^2. calculate the speed of flow.

asked by lisa on March 28, 2009
93. ## american history

Under the _______ system, Spanish conquistadores were rewarded with local villages and control over the local labor force.

asked by stacy on July 7, 2014

How can you make an event chain concept map of the different levels of cell organizations from cell to organ system?

asked by Wyeth on November 21, 2010
95. ## us history

different labor systems predominated in various regions of british americ. how did the economy of each region help determine its labor system?

asked by Anonymous on September 15, 2010
96. ## physics

Two forces 7N each are inclined at an angle of 120 degree to each other. Find the single force that will replace the given force system

asked by sheryl on August 26, 2015
97. ## health

To protect itself from stress, the nervous system triggers the release of hormones such as adrenaline. A.True B. False I think it is A true

asked by anonymous on January 23, 2012
98. ## me

why should food corporation of india be concerned about demand for the food grains to be release for public distribution system?

asked by amit on September 11, 2011
99. ## anthroology

I am doing a essay, and I need help to start me off on this. Please help me. Give me examples, ideas anything. This what I doing my essay on Political System, subsistence strategy Bands.

asked by jimmy on February 7, 2015
100. ## Algrebra-Systems of Equations

Kasey is thinking of 2 munbers. The sum of the two numbers is -18. Their difference is 38. Write a system of equations that can be used to find the numbers.

asked by Resha on January 19, 2012