# 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 500
1. ## physics help

how much work must be done to raise a 5kg block of steel from the ground to a height of 2m (in Joules) in the absence of friction?

asked by jcarrington on June 28, 2015
2. ## algebra 2

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)

asked by Alyssa on November 10, 2013
3. ## English Composition

We are to write a paragaph on how contentment plays a part when we balance school, work, and family. I'm not sure how to start.

asked by Diane on October 17, 2011
4. ## science

How much work does spike do when he pulls a 50 kg sled with a force of 200 N with a rope at an angle of 30 degrees above the horizontal, 20 m?

asked by katie112 on February 25, 2015
5. ## algebra 2

So I am doing my algebra home work and I get stuck on these three problems. x^2-19x+72 from there idk what to do because nothing multiplies up to 72 and adds up to -19. Same for this one. x^2-25x+48 And x^2+9-90 (X+15) (x-6)

asked by Alyssa on November 10, 2013
6. ## Physics

How much work does spike do when he pulls a 50 kg sled with a force of 200 N with a rope at an angle of 30 degrees above the horizontal, 20 m?

asked by Mireya on February 25, 2015
7. ## math help!!!!! Thanks

Find the surface area of a cone with a radius of 8in. and a height of 7 in. I forgot the formula how to work this out can somebody help me. Thanks

asked by Callie on February 25, 2015
8. ## chemistry

calculate the work done (in joules) when 50.5g of tin dissolves in excess acid at 1.08 atm and 27 degrees Celsius

asked by Anonymous on April 2, 2011
9. ## physics

A force of 34.5 meganewtons of thrust launches a Saturn 5 rocket 393 km off the ground. How much work was done (in joules)?

asked by iyle on February 2, 2015
10. ## social studies

What is the practice of sending children to live away from home to work to earn money for their families called

asked by June on May 6, 2019

In a triangle, we have

asked by Gem on April 2, 2015
12. ## math/ calculus

full work out with explanation of this problem please we're working with derivatives and i don't understand it given h(x)= cotx/x find h'(pi/2)

asked by Angie on December 20, 2011
13. ## English

How does Shakespeare work loyalty and betrayal into the play King Lear. Context of order vs. chaos?

asked by Alexis on October 2, 2011
14. ## Logs

log (sqrt4(x^16 / y^4)) What is the value of the expression when logx=8 and logy=1? My work: x=10^8 y=10 I tried to plug these in but my calculator but it said "overflow." Is there an easier way to do this?

asked by Selena on May 31, 2015
15. ## Writing

how do I work cite a video from youtube please help me And also how do I write a paper aobut racism and what sources can I useñ

asked by Alie on December 21, 2016
16. ## college

After you work out at the gym on a stationary bike for 43.0 minutes, the distance guage indicated that you have traveled 14.8 miles. What was your rate in km/hr?

asked by Sasha on September 20, 2010
17. ## art

hi i have to write an exploratory study on a designer that influences my work i can't think of any good illustrators or designers any ideas? thanks

asked by anonymous on January 7, 2010
18. ## science

How much total work is done by 450-N girl who lifts a 52-N backpack 1.2m to her shoulders and then climbs a ladder 3.0m high?

asked by Joe on November 7, 2012
19. ## essay help/english

Social work in Adaption: Ethical Dilemmas and demographics (Wages,hours and job outlook etc.) thank you!

asked by Anonymous on April 6, 2014
20. ## science

a box pushed across the floor for a dis tance of 5 meters with a force of 50 newtons in 5 second how much work is done? what is the power?

asked by sherrie on October 24, 2009
21. ## science

Calculate the work done by the brakes of a car of mass 1000kg when its speed is reduced from 20m/s and 10m/s

asked by jaspreet kaur on October 11, 2015
22. ## physics

3. If a man does 300 j or work by pushing a table 2.0 m across the room, what was the magnitude of the applied horizontal force?

asked by Lorraine Emul on February 8, 2011
23. ## Character Education

Can you find any information that Character Education benefits from volunteering? Also, does raising money in a school for a cause usually work?

asked by Anonymous on November 7, 2007
24. ## math

How do you work this word problem? The team played 125 games and lost 15 more than they won.How many did they lose

asked by jacob on December 2, 2013
25. ## physics

a man weighing 500N runs up a staircase half a minute he rise up by 4m. a.what work did he do? b.what was his power?

asked by sam on May 25, 2011
26. ## Art

Hundertwasser who was born in December15, 1928 in Austria and died in February19, 2000. What do you think about characteristics of his work?

asked by Jo on October 29, 2016
27. ## to everyone

I'd just like to say thank you all to the volunteers and fellow questioniers for helping out a lot. Your help is very appreciated. You are welcome. DrBob did a major work with you, and you should be appreciative. your welcome!

asked by Jasmine20 on December 13, 2006
28. ## biology

Certain spider toxins work by inhibiting Ca2+ channels. Briefly explain how this works and what happens to the person.

asked by loveag on July 13, 2013
29. ## Algebra II

what value of x makes the following equation true? -5(x + 10)2=390,625 All work must be shown and explantions must be in complete sentences.

asked by Anonymous on May 12, 2015
30. ## Physics

Eight books, each 4.1 cm thick with mass 1.8 kg, lie flat on a table. How much work is required to stack them one on top of another?

asked by Linda on November 10, 2010
31. ## economics

a job can be advertised as a a)free space b)work gap c)empty posting d)vacant position

asked by christal on October 2, 2007
32. ## science

the making of polymers is an example of the category of work done by chemists calledd ________ fill in the answerr. please helpp!

asked by christina on April 22, 2008
33. ## english

how do u write an outline over someone you admire like for instant my cousin who helped me in band, athletics and school work??

asked by tessa on September 23, 2014
34. ## Vectors Math

A 5 N force which acts along the direction vector (2, 3), moves an object from A(1, 3) to B(3, 7). Find the work done if the given units are metres.

asked by Jaidon B on February 23, 2015

kim spent 1/2 of her money on a cake and 1/3 on sodas She had $40 left . How much did she spend and how much was her total amt.Help me work this out asked by Elisha on March 9, 2016 36. ## physics If a person does 80 J of work in moving a 30 \rm{kg} box over a 13 m distance on a horizontal surface, what is the minimum force required? asked by Jon on October 6, 2010 37. ## physics A 67.5 kg hoop rolls along a horizontal floor so that its center of mass has a speed of 0.090 m/s. How much work must be done to stop it? asked by tom on October 30, 2012 38. ## math Gasoline is about$4 per gal. You use about gallons each day driving to and from work. How much should you budget for gas over the next month (about 20 workdays)?

asked by eric on October 8, 2008
39. ## Math

There are 36 carpenters an a Crew. On a certain Day ,26 where present. What percent showed up for work? (round to the nearest tenth)

asked by Roselyn on January 11, 2017
40. ## Algebra 2

What is the slope of the line that passes through the points (-2, 4.15) and (1, 1.24)? Here's my work: m= y2-y1 / x2-x1 m+ 1.24-4.15 / 1 - (-2) m= -2.91/3 Is my answer correct? I really appreciate your help! Algebra isn't the easiest for me

asked by Josh on September 4, 2013
41. ## History

By 1932, how many Americans were out of work? A. 1 in 2 B. 1 in 3 C. 1 in 4 PLEASE HELPPPP Only got 2 days of school left and i am soooooo behind someone be nice and help meeee

42. ## Algebra

If anyone can check my work for me that would be greatly appreciated I'm having trouble. Evaluate the expression foe the given value of the variable. |-4b-8|+|-1-b^2|+2b^3 ; b=-2 I got 1 for my answer -4(-2)-8-1+2^2+2(-2) 8-8-1+2^2-4 -1+2^2-4 1

asked by Sabrina on November 16, 2016
43. ## world history

how do i do a report that is due in 2 day that is on the 5 themes of geography and has to do with a current event i need help and i am having a break down how can i work like this HHHHHEEEEEELLLLLLLPPPPPPP ME

asked by heidi on November 2, 2010
44. ## Algebra

I seriously need help on this math problem. I have tried to work it out myself but the answer is not coming out right. Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x2 + 3x + 7.

asked by Angel on July 8, 2015
45. ## chemistry

H2+I2->2HI If 3 moles of H2, I2, and HI are in a 3L flask, what will be the equilibrium amount of each. Kc=5 The answer is H2= I2= .71M, HI= 1.584M(given by teacher) Just need to know how to do the work.

asked by corey on October 17, 2007
46. ## physics

How much work is required to completely separate two charges (each -1.9 microC ) and leave them at rest if they were initially 6.0mm apart?

asked by Lanise on January 31, 2010
47. ## physics

How much work is required to completely separate two charges (each -1.9 microC ) and leave them at rest if they were initially 6.0mm apart?

asked by Lanise on January 31, 2010
48. ## preserving the past

Where would one go to explore these and other closely related current problems: How should museums and archives work? Should they save everything? Who should have access to what and when?

asked by Giacomo on March 18, 2009
49. ## English

Does this sentence work? Lana, the protagonist of the novel, struggles to reach her dream, but only to encounter a succession of dilemmas from the .

asked by saphire on January 24, 2012
50. ## English

Explain how Tom Joad's imprisonment affect the way he behaved during the journey and throughout his search for work in California.

asked by liz on April 7, 2011
51. ## physical science

600J of work hoisting a 20kg bale of hay, what height was it lifted? how can I calulated this equation?

asked by maya on March 12, 2009
52. ## science

how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j

asked by sophie on November 15, 2009
53. ## human resources management

how emotional and physical aspects of a person’s life can influence the employee’s effectiveness in the work environment

asked by Lisa on October 26, 2007
54. ## science

how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j

asked by sophie on November 15, 2009
55. ## science

how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j

asked by julie on November 15, 2009
56. ## Math

Harrison says that to convert a mixed number to a fraction greater than 1, he thinks of it this way: 4 2/5= 5/5 + 5/5 + 5/5 + 5/5 + 2/5 = 22/5. Does this strategy work? Explain

asked by Amari on February 1, 2015
57. ## financial

why is it important for people to know all about money and capital markets investments and financial management if they only work in one of these areas

asked by alley on October 17, 2007
58. ## Pre calculus

How do you work this problem? Find the exact value of sin 2u, cos 2u, and tan 2u given that cot u=3 and 180

asked by Cynthia on May 14, 2012
59. ## maths-calculus help me

differentiate Arccosh(x^2+1)*dy/dx if y=arcsinh(coth(x^2) plz showfull work i plead my brain is fried

asked by am in trouble on June 5, 2016
60. ## Social studies

i have a d d and cant write and my friend whose name was "me" who was treated rudely said u all do the work so put a essay about greensboro sit ins thanks

asked by BILLY on May 27, 2008
61. ## Science

Eight bricks 6 cm thick with mass 1.5kg lie flat on a table.how much work is required to top them one on another?

asked by Christopher on May 14, 2012
62. ## physics

A man holds a child on shoulders while watching a football match. How much work has he done if the game last for 2 hours

asked by paul on January 4, 2017
63. ## Math

Are there any problems in this? -3 1/5 / -2/3 = -4 4/5 Here is the work it showed. -3 1/5 / -4 4/5=-16/5 * -3/2=-8/5 * -3/1 = -24/5= -4/5 To me, I think there is something wrong in this the answer suppose to be positive, not negative. The only thing that I

asked by Valerie on October 23, 2017
64. ## English

Explain how Tom Joad's imprisonment affect the way he behaved during the journey and throughout his search for work in California.

asked by liz on April 7, 2011
65. ## physics

In a tug of war match, each side pulls with a force of 500N, but the rope does not move. How much work is done?

asked by taylor on May 18, 2015

I work from 8am to 5pm each day from Monday to saturday. If I get $22 an hour, calculate my yearly salary. asked by indira on January 20, 2017 67. ## science An object with a mass of 21 kilograms is lifted through a distance of 7 meters. How much work is done A. 147j B.703n c.15,625N asked by Anonymous on January 30, 2014 68. ## kwame nkrumah university , ghana the impact of the 3.5g technology on the computer and human production.its a project work and am supposed to present it in the next 24 hours .please help me. asked by opoku on September 27, 2010 69. ## Alberbra Please help with graphing a quadratic function. y=(x-1)^2 Got stuck at y=(x-1)(x-1) and p=1, q=1 Which doesn't work, because you can't fix a vertex with one point on a graph. asked by Kelly on January 1, 2010 70. ## math Find three ordered pairs that satisfy the equation. (0, 1 ), ( 2 , 7), (2, 3 ).Viewing Saved Work Revert to Last Response. asked by Anonymous on September 10, 2012 71. ## math my fith grader has a work sheet on stem and leaf plots. There is no workbook or examples that were given and i have no clue. Can you help me? asked by marie on August 29, 2007 72. ## Geometry Point C is the center of the circle. Angle ACB measures56 degrees What is the measure of arc AB? How do you work this out? asked by Alexis on September 12, 2011 73. ## Math Two sides of a triangle measure 7 cm and 15 cm . Which of the following could not be the length of the third side ? A. 5 cm B. 9 cm C. 15 cm D. 22 cm I'm confused because at first I tried Pythagorean thereom and it didn't really work . asked by Valerie on June 3, 2014 74. ## Physics If the coefficient of kinetic friction is 0.24, how much work do you do when you slide a 55 kg box at constant speed across a 5.4 m -wide room? asked by Lauren on April 4, 2018 75. ## History How did ruby bridges make the USA a safe place to live,work,and raise a family asked by Lola on January 4, 2016 76. ## social studies which of the forces at work in Europe played the greatest role in helping to prompt the outbreak of war asked by lissie on March 1, 2010 77. ## pre-calc If f(x)= x-B/x-A, f(2)=0, and f(1) is undefined, what are the calues of A and B? my teacher is picky and requires all work to be shown. can you explain how you got this answer? A is 1 from the f(1) is zero. The denominator has to be zero. B is two, since A asked by Sam on January 25, 2007 78. ## physics A train with a velocity of 45.1 m/s must come to an emergency stop in 10.6 s. How far did it travel during this time? i tried to use the x=1/2at^2+vit+xi equation but that did not work.. asked by ash on December 17, 2009 79. ## Career guidance What kind of a job that can I work while I am doing those subject? Maths lit,life science, Geography, agriculture asked by Thabelo on July 22, 2019 80. ## science you read about a rope and pulley machine that was able to produce equal amounts of output work. was this a realistic example why or why not? asked by ricardo on January 13, 2013 81. ## Physics I don't understand what formula to use for this question: Points A and B each have an electric potential of +9 V. How much work is required to take 1 mC of charge from A to B? Thank you asked by Anna on July 19, 2016 82. ## Science Joe pushes a lawn mower four times as far as Mary while exerting only half the force, who does more work? And by how much? asked by Tara on April 21, 2013 83. ## Chemistry What is the amount of work produced when 1.0 g of H2O (l) is boiled at atmospheric pressure? Assume the liquid has no volume. asked by Karen on April 24, 2013 84. ## Physics How much work did the movers do to push a 49.0 kg crate 10.3 m across a rough floor at a speed of 2.9 m/s with a horizontal pushing force of 48 N ? asked by Help on October 7, 2015 85. ## Math If I work 5 days a week making$8.38 an hour, how would I figure out how much I make a month, getting paid bi weekly?

asked by Robert on September 16, 2015
86. ## physic

Eight books, each 8.5 cm thick with mass 1.3 kg, lie flat on a table.How much work is required to stack them one on top of another?

asked by Anonymous on October 14, 2010
87. ## science

you read about a rope and pulley machine that was able to produce equal amounts of output work. was this a realistic example why or why not?

asked by ricardo on January 13, 2013
88. ## Math+Log

Simplify the expression: The first 7 is regular size and the log7x are small (the second 7 is subscripted only). 7log7x = would the answer be 1? How do you work this?

asked by Chopsticks on February 23, 2009
89. ## Math

I am stuck on this question. Could someone work it out. Id appreciate it. Find the amount of A in an account after t years given the following conditions. dA/dt = 0.04A A(0) = 7000 A(t) =

asked by JL on April 25, 2011
90. ## Physics

When a particle located a distance x feet from the origin, a force of x^2+2x pounds acts on it. How much work is done in moving it from x=1 to x=3?

asked by Anonymous on December 14, 2018
91. ## booker washington

The lawyer suggested that you and __________ work to find an agreement outside the courtroom, for the trial would be long and unpleasant

asked by dories on March 19, 2013
92. ## english

i need help with my questions on the book death on ice i read it but i have bad memory and my work is due tuesday can anybody help please

asked by kristen on May 27, 2010
93. ## Algebra

45x divided by 6t x 11x I have tried to work this out, however, do not understand it at all. The book gives an answer of (55x squared)t. Can anyone explain this to me? Thank you

asked by tish on April 27, 2011
94. ## math

A cable weighing 2 lb/ft is 16 ft long. If a 20-lb weight is attached to the end, find the work done in winding up the chain.

asked by Tony on April 18, 2012
95. ## Calculus II

A cable that weighs 1.5 lb/ft is used to lift 700 lb of coal up a mineshaft that is 400 ft deep. Find the work done.

asked by Brian on November 3, 2013
96. ## physics

when you do work to push an object horizonatally on a frictionless surface what energey change is taking place?

asked by lisa on May 31, 2012
97. ## physics

Mitch carries a large cat from one end of his bedroom to the other.does he do any work?if not why? if so,what energy change is occurring?

asked by lisa on May 31, 2012
98. ## Math-SPSS

hello! i need some help urgent! does anyone know how to work with SPSS? we need to calcualte the frequency of the most and least used language learning strategies in correlation with grade.any help?

asked by swen on February 20, 2010
99. ## chemistry

when do you need to use the octet rule for lewis structures and when does it not apply i am confused for N2O4 i cant get the rules to work with the structure

asked by lyne on April 20, 2009
100. ## Math

If 3x+xy+4y=8, what is the value of d^2y/dx^2 at the point (1,1)? My work: 3+(x)(dy/dx)+(y)+4(dy/dx)=0 dy/dx(x+4)=-3-y dy/dx=-3-y/x+4 2nd Dervative: (x+4)(0-dy/dx)-(-3-y)/(x+4)^2 (x+4)(-(-y-3/x+4))-(-3-y)/(x+4)^2 (x+4)(y+3)/(-x+4)+(y+3)/(x+4)^2 *Mult.

asked by David on October 6, 2014