# 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 590
1. ## world lit

cervantes wrote a parody while voltaires wrote a satire. explain the difference in purpose between the two forms of writing, then use two examples from each work to support your statement.

asked by jarod on August 25, 2011
2. ## Physics

When UV light of wavelength 295nm falls on a metal surface, the maximum kinetic energy of emitted electrons is 1.50eV. What is the work function of the metal? W0 in eV Please someone help me out. Thank you.

asked by Sheila on April 22, 2013
3. ## thermodynamics and kinetics

One mole of an ideal gas undergoes an isothermal reversible expansion, doing 1 kJ of work and doubling the volume. What is its final temperature? How much heat was added to the gas?

asked by Dorota on October 12, 2012
4. ## physics

A standard man climbs 10 m up a vertical rope. How much energy in calories is dissipated as heat in a single climb if 20% of the total energy required is used to do the work?

asked by John on April 24, 2013
5. ## Math

Mae Assurian is an electrician. She works form 6:45 a.m. to 3:30 p.m. Monday through Friday, and takes a 45-minute break for lunch. How many hours per week does Mae work?

asked by Anonymous on November 30, 2010
6. ## Entrepreneurship

If a company is organized by a function, it is grouped into parts based on what? A. the type of work people B. the product being produced C. the type of customer being served D. location

7. ## Physical Chemistry

Derive an expression for number of electrons N(E) with energy that can escape from a metal in terms of Z(E) (density of state) and F(E) (Fermi-dirac function) and ф (work function).

asked by John on November 18, 2011

a loaded cart as a total mass of 227kg.if a 312-N force acting at angle of 30° to the ground is applied, how much work is done in moving the cart 15 meters?

9. ## physics

A sled if pulled over level snow a distance of 0.500 km by a force of 124 n applied to a rope that makes an angle of 35.0 degrees with the snow. How much work is done?

asked by mer on January 29, 2008
10. ## scholarship thing

for the scholarship, it says we can submit additional work that would give evidence to why we would excel in an honors program. i would really like to submit some photos i took but i'm not sure that would help me, especially when i plan on majoring in

asked by lillian on January 1, 2009
11. ## Math :)

I have to work with percentages and I don't know how to figure this word problem out. John saved 23.97\$ by purchasing boots at "30% off sale". Find the origianl price of the boots.

asked by anjelika on November 9, 2008
12. ## human resources

Prepare a 700- to 1,050-word report on a career management plan for your new employees. Assuming your budget is zero; provide a justification of why your report will work.

asked by Anonymous on November 12, 2010
13. ## Physics

A force of 2000N is used to push a box up am inclined plane that is 15m long. If the 100 kg box is raised to a height of 8m,how much work is done against friction ?let g=10m/s^2.

asked by Riana on April 2, 2013
14. ## Busienss

Hello My name is Sara and i,m work in marketing and i have get offer from some company from all world about some product for import and export and i do like to know how i can check this company its real or fake wait your reply Thanks

asked by saramazen on June 12, 2014
15. ## physics

a certain coiled spring with an unstretched length of 20cm require a force of 2N to stretch it by 0.2cm. What is the work done in stretching it by 2cm. If the elastic limit is nt execeed.

asked by Anonymous on January 26, 2017
16. ## Math

How many square tiles with sides 1ft long on each edge would be needed to cover the floor of an 8 by 13ft room? Work Multiply 13ft by 8ft?

asked by Need help desperately on October 20, 2015
17. ## Physics

A force of 132 new inns is applied in pushing a stalled autoMobile at constant speed for a distance of 150 m. How much work is done in joules on the car by the force ?

asked by Mirlande on March 5, 2017

Maths Literacy,Tourism,Business Studies,Economics Iam in grade9 next years I want to choose these subjects and I also want to know the careers are available for those subjects that you work in a office

asked by Ambesiwe on November 20, 2015
19. ## General Chemistry

A piston has an external pressure of 7.00 atm. How much work has been done in joules if the cylinder goes from a volume of 0.130 liters to 0.650 liters. Express your answer with the appropriate units.

asked by Jamie on March 20, 2014
20. ## math

You invest money that pays 6.3% interest/year compounded quarterly. How long should you invest if want to double initial investment? I tried A=P(1+r/n)^nt, but it didn't work, using A=2P. the principle is not given. Please help

Compute the difference between the ordinary interest and the exact interest for a loan with a principle amount of \$1100 at 12 percent for 120 days. I'm getting \$0.60 Can you check my work?

asked by Casey on February 21, 2015
22. ## Physics

A certain coiled spring with an unstretched length of 20cm required a force of 2N to stretch it by 0.2cm. What work is done in stretching it by 2cm if the elastic limit is not exceeded?

asked by Nina on October 2, 2018
23. ## MATHS

matt and ruba each have one coin. The total amount of money is less than 50p. work out the probability that exactly one of the coins is a 10p piece. assume that all possible coins are equally likely.

asked by Chloe on November 5, 2011
24. ## Physics

I NEED HELP! Already answered on here but does not make sense/work. Please HELP! A 2.7 kg balloon is filled with helium ( density = 0.179 kg/m^3). If the balloon is a sphere with a radius of 5.2m , what is the maximum weight it can lift?

asked by Kristy on December 1, 2010
25. ## U.S History

In the Revolutionary war, who helped America to some early wins, but turned traitor later on in the war? Just a minute! Are you asking us all your questions? What have YOU done to find the answers? We HELP but don't DO the work for you!

asked by COOL on January 22, 2007
26. ## physics

a loaded cart, mass220-kg is pulled across the ground with the force of300n acting at angle 37 degree with the horizontal. how much work is done in moving the cart 20m?

asked by christian on March 20, 2013
27. ## Basic algebra

jenelle makes \$7.25 an hour at the flower shop write an inequality to find out how many hours you was work to earn at least \$125 how do you want does the word step-by-step

asked by Anonymous on January 17, 2017
28. ## geometry

T is the set of all positive numbers n such that n

asked by marco on January 31, 2007
29. ## Math

How many square tiles with sides 1ft long on each edge would be needed to cover the floor of an 8 by 13ft room? Work Multiply 13ft by 8ft?

asked by Anonymous on October 20, 2015
30. ## physics

when 1240 J of heat are added to one mole of an ideal monatomic gas its temperature increases from 273K to 277K. Find the work done by the gas during the process.

asked by tired on November 12, 2013
31. ## Physica

a man pushes a box of mass 5 kg in a horizontal direction by 10 N force on the surface through a distance of 5m if the cofficien of kinetic friction is 0.2 the total work done on the box is

asked by 1999999 on July 17, 2012
32. ## Math [Calculus]

I'm asked to find the volume of the solid bounded by the curves x=1+y^2 and y=x-3, rotated about the y-axis. I have a general idea of how to start the problem off, but I'm not sure how to find the interval that I need to work with...

asked by Tii on January 10, 2010

Sue whants to by a new printer that costs \$189.She has \$125 saved.She has a job that pays \$8.00 an hour.How many hours must she work to earn enough to buy the printer?

asked by Alyssa on December 13, 2008
34. ## physics

"A projectile is fired horizontally at 14.9 m/s from the edge of a 7.05-m-high cliff and strikes the ground. Find the horizontal distance the projectile traveled." I have no work cause I have no idea how to do this...

asked by hailey on September 21, 2014
35. ## Physica

a man pushes a box of mass 5 kg in a horizontal direction by 10 N force on the surface through a distance of 5m if the cofficien of kinetic friction is 0.2 the total work done on the box is

asked by Q19 on July 15, 2012
36. ## Economics

suppose you have a factory that makes pens and the demand for the pens decline, and there are more people willing to work due to a recession. does this result in an increase in supply? please explain

asked by Anonymous on October 18, 2007
37. ## Physics

A 200-kg cart is pushed slowly up an incline. How much work does the pushing force do in moving the cart up to a platform 1.5 m above the starting point if friction is negligible?

asked by Nichelle on January 30, 2012
38. ## English

I am doing the 4 humours for english home work and have to give examples of characters from tv, film or book that match the 4 humours so melancholy, phlegm, sanguine and choler.

asked by Anonymous on November 16, 2011
39. ## Social Studies 8R - HW. Qs. Check

Why did many freedmen and poor whites become sharecroppers? Answer - Some large planters had held onto their land and wealth through the war. Now they had land but no slaves to work it. am i correct???????????

asked by Laruen on September 23, 2012
40. ## Physica

a man pushes a box of mass 5 kg in a horizontal direction by 10 N force on the surface through a distance of 5m if the cofficien of kinetic friction is 0.2 the total work done on the box is

asked by 1919 on July 16, 2012
41. ## Calculus

A cable that weighs 3 lb/ft. is used to lift a golf cart which weighs 700 lbs up to the deck of a boat which is 300 ft above a loading dock. Find the work done.

asked by Joe on May 6, 2015
42. ## physics

when 1240 J of heat are added to one mole of an ideal monatomic gas its temperature increases from 273K to 277K. Find the work done by the gas during the process.

asked by tired on November 12, 2013
43. ## English

Please check my work. Identify whether if this sentence is complex, an exclamation, declarative, or interrogative. The car broke down, but a rescuer van arrived within minutes. ----- Complex

asked by Priya on July 20, 2011
44. ## Calculus

A cable that weighs 3 lb/ft. is used to lift a golf cart which weighs 700 lbs up to the deck of a boat which is 300 ft above a loading dock. Find the work done.

asked by Anonymous on May 7, 2015
45. ## English language

Please tell me how to write these, if you have any idea. Let's assume we are all connected by the oceans;can we work together to protect the environment? Write an essay,story or poem on the above topic. It should be about 700 words?

asked by poppy👌🤔 on May 4, 2019
46. ## Physics

Many people buy a coffee or other hot beverage on their way to work. For safety, the cup usually has a lid and is placed in a cup holder. Using Newtons first law, explain why both these precautions are necessary.

47. ## Physics

A dram of mass 100kg is rolled into the deck of long 1.5m above a horizontally floor using a plank 4m long.calculate the work done against gravity during the process [Take g=10ms'2]

asked by Yegh margaret on January 29, 2017
48. ## Basic tech

A girl pushes a load of mass 20kg to a distance of 10 metres in 5 seconds calculate (1) the work done (2) the energy used (3) the girl's power (a=g=10m/s square)

asked by Olorunnimbe on November 25, 2014
49. ## Employees

Proportion practice: "Fancy factory has 300 employees with a 3 to 7 ratio of men to women. How many men work there?" I've been working on this forever. And I can't figure out what to do. DX uarrghhh. Help?

asked by Kiki on November 17, 2008

My questin is If r=5z then 15z=3y, then r= I just can't seem to determine how to set this problem up. I tried subsutition but that doesn't work for me either? Thanks in advance I assume you want to define r in terms of y. If r = 5z, then 3r = 15z.

asked by Katie on March 5, 2007
51. ## physics

A 58.0-kg skier starts from rest at the top of a ski slope of height 70.0 .If frictional forces do −1.09×104 of work on her as she descends, how fast is she going at the bottom of the slope?

asked by lok on December 14, 2011

Using requirements of Value Chain Management put these requirements to work specifically at the Smart Chips Company in order to help it remain competitive in the long run.

asked by Jennifer on July 7, 2010
53. ## maths

Paul wrote five tests which were marked out of a total of 200 marks. Paul scored 40 out of 50 in a 6th test. What was his NEW average? HoW do I work out this type of sum.

asked by Anonymous on March 30, 2015
54. ## Physics

a loaded cart has a total mass of 227kg. if a 312N force acting at an angle of 30 to the ground is applied, how much work is done by moving the cart 15m?

asked by Miko on August 20, 2012
55. ## Maths

A rock, R, is 40 km from a harbour, H, on a bearing of 040°. A port, P, is 30 km from R on a bearing of 130°. Draw a sketch showing the points H, R and P and work out the size of angle HRP.

asked by Sam on September 14, 2011
56. ## physics

What is the minimum work needed to push a 950 kg car 890 m up along a 8.0 degree incline? Assume the effective coefficient of friction retarding the car is 0.22.

asked by Luke on October 10, 2011
57. ## MATH HELP !!!!!

I know a fraction is the answer but can't make it work for the probability question asking for what is the chance you will pull a pink eraser out of a,container that has 5 green .2 striped.4 pink.and 3 white.?

asked by james on May 19, 2016
58. ## physics

1000cm *3 of air at 20 degree celicius&101.35kpa is heated at constant pressure until volume doubles, find find temperature&work?

asked by dagne on January 1, 2019
59. ## Math

The food that the average American consumes in a day provides 2.0 X 10^3 kcal of energy. How many calories a sec is this? *how to set up work in dimensional analysis*? & *what is "k" in kcal stand for*?

asked by Karen on August 26, 2015
60. ## nuclear physics

1) write the proper nuclear reactions for the following: A) beta-decay of radon-222 B) Alpha-decay of uranium-238 2) how does the CANDU reactor work?

asked by anonymous on May 15, 2019
61. ## physics

How fast must a cyclist climb a 4.0 degree hill to maintain a power output of 0.35 hp? Neglect work done by -friction, and assume the mass of cyclist plus bicycle is 83 kg.

asked by peyton on March 1, 2010
62. ## math

a refreshment stand at the fair was open for 3 hours. four people each took turns working at the stand for the same amount of time hoe many minutes did each person work ?? HELP PLEASE !!!

asked by ritzy on December 13, 2011
63. ## art

i have an assignment due next next week. its about why some artworks were made. the only one i don't know is, why was the art work empress Theodora and her attendants made? and what are some possible reasons that the artist is unknown.?

asked by kiki on September 10, 2014
64. ## Chemistry

For the reaction: 2 NO(g) + 1 O2(g) 2 NO2(g) Calculate K, the equilibrium constant, from thermodynamic data at 281 K. (Hint #1: Assume that S and H do not change with temperature.) (Hint #2: Work in J/mol)

asked by Summer on January 2, 2012
65. ## geometry

If three time the supplement of an < is subtracted from seven times the comp. of the

asked by Amy on September 20, 2010
66. ## HCA 220

I have not received my book because of a shipping error on the distributors part and I do not have the diagrams needed for week 8 chapters 8, 9, & 10. I can not complete the assignment without it. Can anyone post the diagrams so I can do the work, I would

asked by Jessicka on August 29, 2010
67. ## Maths

A rock, R, is 40 km from a harbour, H, on a bearing of 040°. A port, P, is 30 km from R on a bearing of 130°. Draw a sketch showing the points H, R and P and work out the size of angle HRP.

asked by Sam on September 14, 2011
68. ## Math

Find the missing dimensions for each three-dimensional figure to the nearest tenth given the volume and other dimensions. I'm not understanding the cones too much. r=5in., v = 487in.3 How do I work it, given only the radius

asked by Nia on March 23, 2011
69. ## College Level Physics

A horse pulls a cart with a force of 145 newtons at an angle of 30 degrees above the horizontal and moves along at a speed of 2.5 m/s. How much work to the nearest kJ does the force do in 6 minutes?

asked by Devin on June 9, 2013
70. ## math

I need help showing work. I did it in my head and now missing a huge part of how I got it. 110=2/3*8 my answer is 165 but they ask me to showwork, which I am always getting docked because as I read the question I do it in my head. Ugh! Please help!

asked by lucy on October 21, 2012
71. ## physics

A truck with a mass of 2.00x10^3 kg is coasting along a straight level road at 250.0 m/s. It comes to rest in 300.0m. How much work is done by friction in bring the truck to a stop?

asked by Anonymous on May 20, 2016
72. ## maths

how to work out partial fraction decomposition when given 1/x(x^2+1) and 2x-1/(x+4)(x-3) if you could give me an idea of the formula and what changes i need to make to the formula when the denominator changes that would help and please use idiot speak

asked by michelle on October 25, 2009
73. ## physics

3813.75 Joules of work is being done on a 150 lb object while it is moved 75 ft across a horizontal plane, what is the final velocity if the coefficient of kinetic friction is 0.25 and the initial velocity is 1 ft / s?

74. ## computers

How does organization culture play a role in the successful reliance on the JAD process to identify and gather business requirements? Would JAD work in your company? Why or why not?

asked by Anonymous on August 26, 2010
75. ## american government

most of the work on legislation in Congress is done by a)by committees and their respective subcommitees b)on the floors of the House and Senate c) conference committees d)through consultation with bureacratic agencies IS A OR C,CORRECT?THANK YOU:))))

asked by vedrana on August 5, 2010

Give an example of how each of following management structures affects the day-to-day work of an organization? 1) Departmentalization 2) Matrix Organizations 3) The project Team 4) The Collegial Model

asked by Anonymous on March 16, 2007
77. ## science

Which cells do the authors identify as the ones most likely to hold the key to increased human longevity and vitality and how might this work? Describe one alternative to cloning that the authors mention.

asked by Pat on January 12, 2015
78. ## physics

If 180 J of work is performed to move four coulombs of charge from the positive plate to the negative plate shown below, what potential difference exists between the plates?

asked by Marcia on January 12, 2012
79. ## Physics

A machine with v.r of 5 requires 1000No of work to raise a load of 500N through a vertical distance of 1.5. ( a ) find the efficiency of the machine. (B) calculate it's mechanical advantage

asked by Reagan on April 17, 2019
80. ## math

A hairstlist schedules 1/4 hour to trim a customers hair and 1/6 hour to style. The hairstylist plans to work 3 1/3 hours each day. How many appointments can she schedule?

asked by sarah on October 19, 2014
81. ## factoring

Factor x3 + 9x2 + 27x + 27 Factor 8a3 + 60a2b + 150 ab2+ 125b3 I tried doing them, but I just don't get how; perfect squares didn't work and neither did decomposition... someone please help me.

asked by Chujung on December 4, 2007

How much work must be done to accelerate a baton from rest to an angular speed of 7.27 rad/s about its center? Consider the baton to be a uniform rod of length 0.529 m and mass 0.478 kg

asked by Megan on March 10, 2011
83. ## Math

Czarina is working part time at a pastry shop baking cupcakes. If she works for 30 hours in one week on the average, how many hours a day does she work?

asked by Molly on October 17, 2012
84. ## Chemistry

A 10.00 g sample of He is compressed isothermally from a volume of 61.1 L to a volume 2.00 L at a temperature of 25 °C. Calculate the work done by the gas on the surroundings if the external pressure is 101.325 kPa.

asked by sol on April 9, 2012
85. ## Physics

3813.75 Joules of work is being done on a 150 lb object while it is moved 75 ft across a horizontal plane, what is the final velocity if the coefficient of kinetic friction is 0.25 and the initial velocity is 1 ft / s?

86. ## Physics

If an automobile engine delivers 45.2 hp of power, how much time will it take for the engine to do 5.40 105 J of work? (Hint: Note that one horsepower, 1 hp, is equal to 746 watts.) in seconds

asked by John Dagle on January 26, 2013
87. ## Math

Stacy earns \$12.50 an hour at her job. She wants to earn at least \$390. Write an inequality hat represents all of the possible numbers of hours (h) that she could work to make at least \$390.

asked by Sam on March 30, 2017
88. ## Common Sense

Do people actually work for this website like, bobpursely, gurublue, PSY,Leo, and other? We teachers are all volunteers. We answer questions on this site because we enjoy helping students learn. And yes -- we are real human beings!

asked by Gina on October 12, 2006
89. ## English

hi im suppose to write a motivational speech and i need help i started off like: High School was like a maze. It had twists and turns and sometimes I felt lost. Throughout my four years I learned that with hard work and strong determination I could get

asked by J ay on September 28, 2008
90. ## English

I was sick this weekend so the person who sent home my work didn't send me the book and my notes for this english assignment so can u please help me!! Nominative and Objective case 1. the guide showed (we, us) the Yoruba sculpture exhibit. is it us?

91. ## Physical Science

Objects accelerated to relativistic speeds....live shorter or grow bigger? Please note that we don't do students' homework for them. Once YOU have attempted to come up with a response to YOUR questions, please re-post and let us know what you think. Then

asked by Gina on March 29, 2007
92. ## unscrambling a word

aenbllnd is there any topic relating to this? enabled? does that work? No. Two ls in the original. I tried www.unscramble.net -- it says no matches. Sorry. =( is nendball a word? or nandbell? those are the 2 most wordish noises I could get where ther is

asked by John on November 1, 2006
93. ## Histroy

Once they arrived in the United States, immigrants experienced a life very different from what they imagined. Which was not something that was most immediately part of their experience? (Points : 1) Labor scams Low skilled work Religious tolerance

asked by John on April 14, 2013

How much work is done by the centripetal force (in this case, the friction between the tires and the road) on a 1200 kg car moving on a circular track of radius 50 meters at a constant speed of 31.4 m/s? A. 7.4 • 10^6 J B. 19.7 J

asked by Lisa on January 10, 2014
95. ## British Litature

Of all the characters highlighted in the works included in this unit, which one did you relate to or identify with the most in terms of his or her struggles and conflicts? Why? What was it about this character that made him or her affect you as he or she

asked by Abbie on May 23, 2012
96. ## Biology Question

A cell is lacking in its supply of amino acids. Which of the following will occur? A- mRNA will not be formed because enzymes may not be present. B- The ribosomes will not work properly because there will be no proteins. C- tRNA may not be able to fulfill

asked by Ayrial on January 2, 2015
97. ## History

Look up the 12th amendment to the constitution and summarize it in several sentences. then discuss its impact on theelections of 1804 ? Are you going nuts? Do you think someone here will do that for you? Folks here will gladly critique your work or

asked by Milind on October 5, 2006
98. ## College Statistics 2

I saw that this was already answered but I can't find it if anyone knows, can you point me in the right direction? A recent poll of 700 people who work indoors found that 278 of them smoke.If the researchers want to be 98% confident of thier results to

asked by Andrea on January 28, 2009
99. ## Physics

A roller coaster starts from rest at the top of a steep incline. As it falls, should its velocity depend on how many riders are aboard? Use net work= change in kinetic energy to prove your answer.

asked by Sandy on September 6, 2012
100. ## English

Could you check these sentences, please? Thank you for helping me! 1) Here is the translation I did on the presentation of the school as received (in Italian) from..... I'm attaching it to this email together with the things he still has to complete. 2) He

asked by Henry2 on February 7, 2012