# 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 489
1. ## world history

Which ecosystems show where early civilizations developed because the area allowed people to grow crops even during times with little rainfall? Select all that apply. -Desert -RainForest -Savanna -sahel

asked by meow meow kit kat on April 16, 2019
2. ## Math

Go to learnalberta.ca username is LA57 password is 2149 Go to T4T courses Put in grade 11 and math The resources will show up, click on 20-1 learn everywhere. I need help on module 3 quadratic functions project please.

asked by Anonymous on September 10, 2017

can you please explain &show me how to get these answers to common denominators,find the sum & difference,write in simplest form,7/10-3/5 =,2/3-1/6 =,5/6-7/12 =,5/12+1/4=,1/6+2/9=,5/8+1/2=,3/8+1/4= i'm really having a huge problem understanding this,it's

asked by Anonymous on February 24, 2011
4. ## algebra

Please please help, this is like the only thing i am having trouble on right now, and no one my my family knows about this stuff. Any help would be great! (: x 3 6 9 12 f(x) 9 18 27 36 Does this relationship show direct linear variation?_______________ If

asked by Anonymous on September 29, 2011
5. ## Maths

Show that the maximum volume of a cylinder of radius r which can be cut centrally from a right solid cone of height h and semi-vertical angle alpha is givenby (4pi/27)h^3tan^2alpha

asked by Joel on August 9, 2016
6. ## physics

a body of mass 1kg on the equator rotates about the axis of the earth with a period of 1 day. (mass of earth = 5.98x10^24kg n may b assumed to b concentrated at its centre n radius of earth = 6380km) first question asks to calculate gravitational force of

asked by taz taz pakhtoon on June 3, 2008
7. ## Chemistry

The question says: A sample of helium is collected by displacing 182 mL of water. The pressures of the gas and the atmosphere are equalized, using the method described in this experiment. The atmospheric pressure is 738 mmHg. The temperature of the water

asked by Heather on October 25, 2015
8. ## chemistry

Element Symbol Atomic Mass --------------------------------------- Bromine Br 79.904 Calcium Ca 40.078 Carbon C 12.011 Chlorine Cl 35.4527 Cobalt Co 58.93320 Copper Cu 63.546 Flourine F 18.9984032 Hydrogen H 1.00794 Iodine I 126.904 Iron Fe 55.847 Lead Pb

asked by Chris on April 15, 2008

On June 1, Jen enters into an oral contract to work as a sales consultant for B&O. Employment is to begin on Sep. 1. On June 31, Jen receives a letter signed by B&O's President stating that the company is revoking the employment contract entered into on

asked by May on April 18, 2008
10. ## Math

You can buy an energy-saving light bulb for \$18.07, which can work for 10,000 hours. It costs you 0.8 cents to operate it for an hour. (\$1=100 cents). A regular light bulb with the same intensity costs 39 cents. The light bulb can work for 1000 hours. It

asked by Jen on February 2, 2010
11. ## IT

Help with a project. A company that provides counseling, education and career assistance to rural citizens countywide, found out the advantages of using VoIP. Five staff members work in the central office, which is located in the county seat and is

asked by kelli on June 6, 2011
12. ## science

vector A has a magnitude of 12 units and makes an angle of 30 with the positive x-axis.vector b has a magnitude of 8 units and makes an angle of 80 with the positive x-axis.using a graphical method , find the magnitude and direction of vectors A-B

asked by arvind on September 6, 2013
13. ## chem thermo

consider a system consisting of 2.0mol co2(g) initially at 25c and 10atm and confined to a cylinder of cross section 10.0cm2. it is allowed to expand adiabatically against an external pressure of 1.0atm until the piston has moved outwards through a 20cm.

asked by susie on October 20, 2013
14. ## Social Studies

The Great Depression caused economic problems which helped____ take control of Italy and_____ become the ruler of Germany. These totalitarian dictators promised that a_____ political system could fix their nations’ economies and enable them to build

asked by dori on October 21, 2018
15. ## History

Which one of the following would likely be the action of one who supports the 18th Amendment? A organizing and hosting a rally for the Women’s Temperance Union B setting up a system of distribution for bootlegged alcohol C appealing to Congress that

asked by Need help on February 3, 2017
16. ## PSYCHOLOGY

Why was the perspective followed by Wilhelm Wundt and his followers called structuralism? a. They wanted to identify the major brain structures. b. Their primary goal was to understand the physiology of the mind. c. They focused their efforts on

asked by Anonymous on August 6, 2018
17. ## Chem

Which coordination compound will most likely form a precipitate when treated with silver(II) nitrate (aqueous)? [Cr(NH3)3Cl3] [Cr(NH3)6Cl3] Na3[Cr(CN)6] Na3[CrCl6] I tried the solubility rules, but that didn't work out. Any help would be great. I made a

asked by Londy on April 21, 2007
18. ## Chemistry

The cooling system in an automobile holds 10.0 L of ethylene glycol antifreeze. How much energy is absorbed when the temperature of the ethylene glycol goes from 20°C to 100°C? The density and specific heat capacity of ethylene glycol are 1.11 g/mL and

asked by Derek on October 21, 2015
19. ## Math

I really need help with this pre test. Thank you all so much! 8th grade Slope and Functions pre-test. 1. What is the function to the system of equations pictured below? A. (-3,5) B. (-3,-2) C. (3,4) D. (1,2) E. (6,-2) F. I don’t know I also need help

20. ## physics bob

still i cant find the normal force without mass of automabile. is normal force mass times gravity sin theta? on a level road the stopping distance for an automobile is 35.0m for an initail speed of 90 km/hr what is the stopping distance of the same

asked by anthony on October 31, 2010
21. ## physics

I need to make an egg protection device using only sipping straws and duct tape. Any ideas? I was thinking of making a parachute but how would I do that with just tape and straws? i've done that before.. wrap the egg all the way around with straws with the

asked by anonymous on January 27, 2007
22. ## ORGANIC CHEMISTRY

NAME THE PROCESSES OR TECHNIQUES IN THE FOLLOWING. 1.SEPARATION OF A SOLID FROM A SOLUTION 2.WHEN WATER IS COLD TO FORM ICE 3.WHEN WATER IS BOIL TO FORM VAPOR 4.WHEN IODINE IS HEATED DIRECTLY TO FORM GAS WITHOUT BEING LIQUID 5.WHEN STEAM IS COLD TO FORM

asked by SAMIRA on February 10, 2012
23. ## Physics

A 20.0-kg crate sits at rest at the bottom of a 13.5 m -long ramp that is inclined at 40 ∘ above the horizontal. A constant horizontal force of 290 N is applied to the crate to push it up the ramp. While the crate is moving, the ramp exerts a constant

asked by Kallian on October 23, 2017
24. ## English

1. When Scrooge tells Marley that Marley was always “a good man of business,” in Act I, Scene 3 of A Christmas Carol: Scrooge and Marley, Marley responds, “BUSINESS!!! Mankind was my business. The common welfare was my business; charity, mercy,

asked by bob09smart on May 2, 2019
25. ## Legal Studies URGENT

Hi beautiful people I need help incorporating the Police Powers and Responsibilities Act OR the Queensland Criminal Code into an argument about victimless crime. My two issues are currently the role of paternalism in the legal system and at what point the

asked by Em on September 14, 2011
26. ## Legal Studies: Queensland/Australia

Hi beautiful people I need help incorporating the Police Powers and Responsibilities Act OR the Queensland Criminal Code into an argument about victimless crime. My two issues are currently the role of paternalism in the legal system and at what point the

asked by Em on September 12, 2011
27. ## Physics

Hello, I'm trying to figure out which of the following statements are TRUE. I suspect that 2, 6, 8 are true...and that there is one more that is true, but not sure which one? Thanks! It is impossible to have a collision between two objects in which the

asked by Anonymous on October 29, 2011
28. ## physics

Hello, I'm trying to figure out which of the following statements are TRUE. I suspect that 2, 6, 8 are true...and that there is one more that is true, but not sure which one? Thanks! It is impossible to have a collision between two objects in which the

asked by John on October 29, 2011
29. ## English

Read the paragraphs from “Let’s give up on the Constitution” by Louis Michael Seidman. The deep-seated fear that such disobedience would unravel our social fabric is mere superstition. As we have seen, the country has successfully survived numerous

asked by Brandon on June 14, 2019
30. ## Chemistry

Suppose you are given the following experimentally observed facts regarding the reactions of silver ion. (a) Ag^+ reacts with Cl^- to give white AgCl (s) (b) Ag^+ reacts with ammonia to give a quite stable complex ion, Ag(NH3)2^+ (c) a black suspension of

asked by martini on November 29, 2011
31. ## College Essay

One seemingly normal day in junior year, my friend and I were taking a train together home from school. We were on an extremely crowded F train headed for Queens. Packed against the door that separated one train car from another, overly warm and squished

asked by Anna on June 18, 2012
32. ## Math

I have a work sheet on probabilities. IMPOSSIBLE (0) UNLIKELY (1/4) EQUALLY LIKELY (1/2) LIKELY (3/4) CERTAIN (1) I have to write at least two things under each listed, and I don't know how to do this

asked by Aliyah on October 12, 2010
33. ## Physics

Calculate the work done by a 300N Force moving a 20kg object a distance of 50m

asked by Danielle on September 4, 2016

I need to create a business idea using the blue ocean strategy but I cannot think of anything that would work. Can anyone recommend some ideas?

asked by Anonymous on March 17, 2015
35. ## Life orientation

What can thembi do to deal with the unethical behaviour?name 4 action she can take. 3.3.3 How should discrimination in the work place be dealt with?

asked by Sarah on March 3, 2013
36. ## English 9

For our assignment we have to choose an advertisement either in a magazine or on TV and describe how it appeals its audience. Are there any ads that would work well here?

asked by Sydney on October 12, 2010
37. ## Statistics

Assume you want to estimate with the proportion of students who commute less than 5 miles to work within 2%, what sample size would you need?

asked by Carmella on October 26, 2011
38. ## Physics

How much time is needed to produce 840 joules of work if 100 watts of power is used?

asked by Rene on June 5, 2017
39. ## math

Write an equation of a circle with the center(-5-8) and radius 2. We will be happy to critique your work. We are not inclined to do it for you.

asked by James on May 7, 2007
40. ## Science

A horse with a force of 50 N pulls a cart of wood a distance of 10 m. Calculate the amount of work done.

asked by George perez on October 6, 2010
41. ## algebra

I am not asking directly for the answer to this problem, I just need help understanding how to work it. Which of the following rules could be used to describe the function on the table below? X | Y -1|-1 0 | 1 1 | 3 a) f(x) = 2x b) f(x) = 2x - 1 c) f(x) =

asked by Amy on February 17, 2012
42. ## Physics

____ N of work are done on your physics text when you carry it horizontally across a 15 meter wide room.

asked by Amber on March 2, 2011
43. ## Economics

Difference of fair work act 2009 and australian pay and conditions standard. Thank you

asked by Celine on May 6, 2014
44. ## DeRidder High

I HAVE A TAXONOMY PROJECT DUE TOMORROW AND I REALLY DO NOT UNDERSTAND EXACTLY HOW TO DO IT. AT THE TOP IT SAYS "IN THE YEAR 2525" I DO NOT KNOW HOW TO WORK THIS. CAN YOU PLEASE HELP ME OUT????

asked by Nikki on January 22, 2008
45. ## Revolutionary Era Practice

Why was it important for women to take on the work of the men who were fighting in the revolution? I think it's A. Can someone p!ease check my answer

asked by Pickering on September 19, 2018
46. ## chemistry

find work done when 1mole of calcium carbide reats with water to produce acytelene?

asked by arpit on February 24, 2013
47. ## Physics

Assume the distance axis is linear and da = 10.0m and db = 35.0 m. Estimate the work done by a force F in moving a 2.80 kg object from da to db.

asked by Arianne on February 16, 2015
48. ## biology

Enzymes in the human body work in a very wide range of conditions. A. True B. False

asked by hannah on November 6, 2013
49. ## science

how much work is done in bringing three electrons , which are intially a great disance apart to how fats will it be moving then it is at distance ?

asked by mohit on July 19, 2012
50. ## physics

What is the minimum work in joules needed to push a 1540 kg car 44.0 m up a 12.5 degree incline?

asked by michelle on April 11, 2012
51. ## physical science

Sarah lifts a 345 g shopping bag a distance of 1.2 meters onto a shelf. How much work was done?

asked by Katie on April 12, 2012
52. ## Step-Stair investigation

Does any one know how to work out the formula for any size step-stair on a 10 by 10 grid yer mum on toast

asked by Heidi on July 13, 2005
53. ## science

How do i work out the mass of a flywheel. I am given the density as 7800kg/m3, a 760mm diameter and a 180mm width. Please help

asked by simon on January 25, 2018
54. ## algebra

Help me please I get confused with the positives and negatives. Please be kind to check my work and let me know where am I going wrong -4x + 10 = 58 -4x + 10 -10 = 58 -10 (is it - or +10?) -4x = 48 or 68 (do i add 58&10 or sub?) -4x/-4 = 48/-4 or 68/-4 (is

asked by thawk on November 13, 2010
55. ## math

If you pay \$585 a month or \$135 a week for 2 work days, then how much do you get paid per day?

asked by maria on March 31, 2014
56. ## math

my work book is asking me to descrive how to use a ten-thousand square to round to the nearest 100

asked by Camilo on September 11, 2007
57. ## Chemistry

How do i work out the standard molar entropy of iron(iii) oxide from the data booklet?

asked by Meera on April 21, 2011
58. ## math

Sam charges a \$5 travel fee and then \$3.25 per hour for labor. How many hours will he need to work to make \$18?

asked by samantha on February 16, 2017
59. ## calculus

lim as approaches infinity of sin(pie.x/2-3x) i need the work and answer find the limit

asked by Ben on October 2, 2011
60. ## physics

Calculate the work done if a force of 300N Is applied at 30° to the horinzontal and body moves 20m

asked by tina loko on July 15, 2015
61. ## Physics

Two positive charges of 0.2microC and 0.01 microC are placed 10cm apart. Calculate the work done in reducing their distance to 5 cm

asked by Mahak on May 30, 2017
62. ## Mathematics

What stepping rate is needed if a person wants to work at a Vo2 of 45 mL/kg/min using a bench that is 34 cm high?

asked by Natasha on October 6, 2013
63. ## Texas History

Why did Spanish missionaries continue their work in East Texas and on the Plains when many people there resented them?

asked by Cesar on October 10, 2009
64. ## math

Compute the following limit: sqrt x+4 -2/x lim x-->0 the x+4 is the only thing under the square root. the answer is .25, but id like to know how to work this out

asked by Anonymous on April 27, 2011
65. ## Calculus

Integrate [1/square root of(e^(2x)-1)]. I have to use u substitution. We are doing the integrals of inverse trig functions, but I cannot get it to work out!

asked by Elaine on February 5, 2012
66. ## physics

the making of polymers is an example of the category of work done by chemists caledd _______ fill in the answeerrr

asked by christina on April 22, 2008
67. ## math

7136 divided by 8 I am working in a work book and the answer is 892, but I can't figure how? can someone break it down for me.

asked by Ryan on May 24, 2011
68. ## Math

What is 14.5 of 60? Showing Work Is this supposed to be 14.5% of 60? If so, take 0.145 (decimal form) times 60 for your answer. I hope this will help.

asked by jordan and brooke on January 17, 2007
69. ## History

What additional risk or costs do entrepreneurs assume when they choose to work for themselves ? ( like compensation packages)

asked by Aria on September 14, 2017

Explain how trade off happens when writers, musicians, artists profit from their work in business law?

asked by Anonymous on July 27, 2013
71. ## ETSU

How much work is done when a force of 800.0 N is exerted while pushing a crate across a level floor for a distance of 1.5 m

asked by Rick on February 9, 2013
72. ## physics

A spring has k = 88 N/m. Use a graph to determine the work needed to stretch it from x = 3.6 cm to x = 5.6 cm, where x is the displacement from its unstretched length.

asked by frank on November 17, 2009
73. ## physical science

How much work does gravity do on a 0.140-kg ball falling from a height of 14.0 m? (neglect air resistance)

asked by Liz on September 9, 2012
74. ## physics

What is the longest wavelength of light that will emit electrons from a metal whose work function is 3.10eV?

asked by Anonymous on April 23, 2009
75. ## physics

Find the voltage increase when 12 J of work is done to push a 0.0013 C charge into an electric field.

asked by sean on March 24, 2010
76. ## english 3

The primary way children learn language is through books and school work. True False

asked by lyndale on February 26, 2016
77. ## HIstory

How well did war time reconstruction experiments work in employing freed African Americans?

asked by Cierra on November 3, 2010
78. ## Environmental science

If anyone doesn't mind could they explain the biogeochemical cycle. What are the sinks? How do they work ? How do humans affect them?

asked by Aria on September 24, 2017
79. ## Math

What does it mean to measure something? And does the definition of measurement work well for length, area, weight, volume and time?

asked by Mike on April 16, 2008
80. ## Algebra II

How do I work the following problem? I cannot find an example in my book that shows how to divide when there are two variables on top. 4-2i/7+3i Thanks for your help today.

asked by Lucy on February 3, 2008
81. ## science

a. if i use 100N of force and move 3 meters, how much work is this? b. if it takes 90 seconds to get there, how much power did i exert?

asked by alyssa on February 4, 2010

how can i make an easy working model in physics for class 10 holiday home work

asked by lil on June 3, 2010
83. ## math

How do i work out the mass of a flywheel. I am given the density as 7800kg/m3, a 760mm diameter and a 180mm width. Please help

asked by simon on January 25, 2018
84. ## Organic Chemistry

Chemical explanation of how drying agents, such as anhydrous sodium sulfate, work/dry?

asked by Cheech on October 13, 2013
85. ## Chemistry

Which of these solvents: hexane, ethanol,or distilled water, would work as effective grease removers?

asked by Tina on March 21, 2010
86. ## Social studies

doctors during the civil war did not have a lot to work with what would you have done to change battlefield hospitals to make them better

asked by Anon on April 7, 2017
87. ## Physica

How much work is done by person lifting a 2 kg object from abottom of awell at constant speed of 2 m\s for 5 sec

asked by QQ16 on July 15, 2012
88. ## Math

Could someone work this question out so I understand it. Find the indefinite intregral (lnx)^7 / x dx Use C as the arbitrary constant.

asked by Jules on April 25, 2011
89. ## sociology

What aspects of the social and work environment in a fast-food restaurant would be of particular interest to a sociologist?

asked by raya on September 23, 2011
90. ## Art

This is where an interior designer does most of her work. (1 point) in a factory at the client's home in an office in a studio

asked by RainbowDragon on January 14, 2013
91. ## mental health

i need to provide an example of how my own values and beliefs impact on my work with individuals experiencing mental illness

asked by leah on February 5, 2010
92. ## science

can you please give me a link to a detailed essay on gender differences in depression. I need a guideline to work from

asked by letmewatchthis on November 7, 2013
93. ## tokarara

Calculate work done if a force of 300N is applied at 30° to the horizontal and the body moves 20m

asked by tina loko on July 14, 2015
94. ## English

What does Martin Luther King mean by "Continue to work with the faith that unearned suffering is redemptive?"

asked by Jason on December 2, 2008
95. ## engineering

How do i work out the mass of a flywheel. I am given the density as 7800kg/m3, a 760mm diameter and a 180mm width. Please help

asked by simon on January 25, 2018
96. ## Physics

What is the work required for a 1000kg truck to increase in speed from 30 m/s to 40m/s? Is the answer 350 kJ?

asked by Harold on March 4, 2009
97. ## physics

a boy pulls a bucket of water of mass sky from a well of depth 10 cm calculate the work done ?

asked by mugilanjali on November 11, 2014
98. ## physics

five joules of work are needed to shift .5 c of charge from one place to another. the potential differences between the places is

asked by Susan on April 9, 2013
99. ## science

a person needs to push a lever down with a force of 16.5N and a distance of 0.75 to lift the rock 0.25m. how much work is done?

asked by sassy on October 18, 2012
100. ## english

Hi! I'm a French-speaking student and I don't understand what is "abatement work". Can you explain that to me in English, please? Thanks.

asked by green_heart on January 10, 2011