# 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 528
1. ## physics

In a paragraph, use the following words: Inertia, Acceleration, Kinetic Energy, and Newton's 1st Law to describe the physics at work during a car crash

asked by Nigear on November 4, 2012
2. ## ap chemistry

A sample of gas in a cylinder of volume 4.09 L at 289 K and 3.43 atm expands to 7.73 L by two different pathways. Path A is an isothermal, reversible expansion. Calculate the work

asked by cheri on October 31, 2012
3. ## physics

(a) A truck of mass 1870 kg travelling at 80 km/h braked to 55 km/h then continued at that speed. How much work was done by the brakes during that period? I just wanted to check my answer... 243334 J ??

asked by shoushanik on October 1, 2014
4. ## AP English Literature

I'm supposed to write an essay about how pleasure and disquietude creates meaning for the work, The Awakening. I don't really understand the question and I have NO idea where to start. Please, help.

asked by Brighton on April 6, 2017
5. ## American History

In the 1840s, the Spanish recruited _______ laborers to work on plantations in Cuba. A. Chinese B. Vietnamese C. Japanese D. Indonesian I wanna say A but I'm confused if it could've been C.

asked by Victoria on January 15, 2014
6. ## literature

I need help developing a thesis statement for an analytical essay on Oedipus Rex and A Raisin in the Sun. I have to compare and contrast these two pieces of literary work. Can someone please help me?

asked by Robin on July 23, 2009
7. ## Physics

(a) A truck of mass 1870 kg travelling at 80 km/h braked to 55 km/h then continued at that speed. How much work was done by the brakes during that period? I just wanted to check my answer... 243334 J ??

asked by Jeannine on October 1, 2014
8. ## Calculus

Find the area of the region bounded by the curves y = sin^-1(x/4) , y = 0, and x = 4 obtained by integrating with respect to y. Your work must include the definite integral and the antiderivative.

asked by Ronathan on May 11, 2018
9. ## world history

Which of the following most likely led Anna Comnena to become a historian ? A. her historical education B. her split with her family C. her life in a convent D. her husband's unfinished work My answer will be C now ?

asked by ciara on May 21, 2012
10. ## Vectors

How much work is done by the orderly pushing a 85 kg person up a 5 m ramp inclined at an angle of 15° to the horizontal? I did W = (85)(9.8)(5)cos15, but to get the correct answer you are supposed to use (85)(9.8)(5)sin15 instead. Why do we have to use

asked by Holly on June 7, 2018
11. ## math

stamjps are sold in bookiets of 100,50, and 10.find as many different ways to buy 200 stamps as you can. record your work in the chart. could you give me some examples...please!

asked by ann on September 18, 2014
12. ## Science

A __________ is a rule that describes the behavuor of something in nature usually without explaining why the behavior occurs Please help and quick! That's two freebies. Give us your feedback on the others and someone will review your work.

asked by jake on September 28, 2006
13. ## english

I used a quote in my essay for school. I have to do a work cited page. What information do I need to cite it properly. I did a bunch of google searches put they really didn't help.

asked by courtney on February 18, 2009
14. ## Healthcare Management

In a _______ study, work is divided into its most fundamental elements, which are studied separately and in relation to one another. A. classic B. therblig C. time D. motion I choose C

asked by Anonymous on September 16, 2017
15. ## Social Studies

how are interest rates and wages similar? A. both rise due to inflation B. both are types of prices. C. both relate to the cost borrowing D. both are payment for work done i think B

asked by chris on September 15, 2014
16. ## math

a student who weighs 500 newtons climbed the stairs frim the first fkoor to the third floor 15 meters above in 20 second How much work did she do? what was her power? How do you write this question out HELP

asked by gary on October 25, 2009
17. ## Algebra

Electrician charged \$50 a house call and \$65 dollar an hour. The job is 6 hours long Will it be cheaper for him to work 6hrs or 2 3hour jobs?

asked by Judy on November 14, 2016
18. ## Social Studies

how are interest rates and wages similar? A. both rise due to inflation B. both are types of prices. C. both relate to the cost borrowing D. both are payment for work done i think B

asked by chris on September 15, 2014
19. ## Chemistry

Calculates the work done (in joules) when 42.8 g of tin dissolves in excess acid at 1.10 atm and 23 degrees Celcius. Assume ideal gas behaviour.

asked by Vanessa on September 19, 2013
20. ## physics

Mason lifts a box off the ground and places it in a car that is 0.50 meters high. If he applies a force of 8.0 newtons to lift this suitcase, what is the work done?

asked by Candice on January 25, 2013
21. ## physics

Express the following measurements as indicated. A. 6.20 mg in kilograms B. 3X10^-9 s in milliseconds C. 88.0 km in meters A. 6.20mg (1g/1000mg)(1kg/1000g) You do the rest. I will be happy to critique your work.

asked by Anonymous on August 22, 2006
22. ## physics

when 100 J of work is done on a stationary flywheel ( that is otherwise free to rotate in place), its angular speed increases from 60 rev/min. What is its moment of inertia?

asked by Anonymous on April 11, 2013
23. ## science

I did the work for this lab but forgot to record the data. It was a double displacement of CuSO4 and NaCO3. If someone could help me with the visual reaction that would help me out a lot. I know what to do I just don't remember what happens.

asked by Teegan on October 19, 2014
24. ## math

stamjps are sold in bookiets of 100,50, and 10.find as many different ways to buy 200 stamps as you can. record your work in the chart. I don't understan what to do here. help

asked by ann on September 17, 2014
25. ## grammar

Could you check my sentences. Thank you very much 1. They used to work that she would forget them when she got famous. 2. She used to tell them that would never happen. 3. She would always call, and go to see them when she was in town. 4. They would thing

asked by Flabio on September 14, 2017
26. ## social studies

As a result of reengineering, work processes are: radically redesigned and simplified. turned over to outside companies. made much more complex. controlled by computer programs.

asked by dina on October 27, 2010
27. ## Math

The area of one of the faces of the cube below is x^2+2x+1 cm^2. Find an expression in mixed radical form for the length of the interior design. Since no one looked at my previous work.................

asked by Angel on November 16, 2016
28. ## critical thinking

Which of the following is not a way to succeed in college? A. Be flexible with planning activities B. avoid procrastination C. establish realistic goals for yourself D. organize a work space my answer is b.

29. ## english

you've applied foa specific job in your field of study. the human resource ARRANGE A INTERVIEW AND TELL YOU BRING YOUR POLISHE PIECE OF WORK

asked by willie on May 17, 2012
30. ## World history

Which of the following most likely led Anna Comnena to become a historian ? A. her historical education B. her split with her family C. her life in a convent D. her husband's unfinished work My answer is .. D?

asked by ciara on May 21, 2012
31. ## History

What are the 10 MOST special events occurred during the 1980’s involving our government? I know I already posted this question. Also the american best history site does not work so please don't give it to me.

asked by Kim on January 27, 2013
32. ## Biology

I was wondering if you could double check my work thanks! Kidneys play a major homeostatic role in regulating body fluids. Which would not be a reasonable inference? A.

asked by Nelson on March 13, 2007
33. ## For Lia - question from this morning

I took some time to work out your rather "nasty" Calculus question. Take a look at it and see if it matches your expected result. http://www.jiskha.com/display.cgi?id=1300878253

asked by Reiny on March 23, 2011
34. ## physics

a particle of mass 1 gram is rotated in a horizontal circle of radius 1 meter.it moves with a velocity 2 meters per second in magnitude the work done in 1 revolution is?

asked by Anonymous on February 6, 2011
35. ## Algebra

Evaluate the given function for the value specified. 2. f(x) = x squared - 7x + 10; find (a) f(0), (b) f(5), and (c) f(-2). a) f(0)=> b) f(5)=> c) f(-2)=> I didn't see your work, so it's hard to critique it. Take the 0, 5, and -2 and plug it in for "x" in

asked by Linda on May 27, 2007
36. ## physics

A plane designed for vertical takeoff has a mass of 51 kg. Find the net work Wnet as it accelerates upward at 1 m/s2 through a distance of 34 m after starting from rest.

asked by anna on December 8, 2010
37. ## drawing

Does anyone know for the work titled Blind MAn by William H. Johnson know what materials he used would it by tempura and printing paper? Also Does the artist use symmetrical or asymmetrical balance?

asked by Jennifer on April 22, 2011
38. ## English

An epic is a narrative or poetic literary work that tells of A.) the traditions of an ancient culture. B.) the adventures of a legendary here. C.) the history and myths of a country. I think it is B..?

asked by Cassie on January 9, 2014
39. ## English

Help with rewording my thoughts The World Bank work to sustain solutions that reduce poverty and build shared prosperity in developing countries.

asked by Amy Lee on February 28, 2019
40. ## management

Given the following amount of work in seconds required at each station: _____________________ A 38 J 32 X 22 B 34 K 30 Y 18 C 35 L 34 Z 20 a. What is the possibility daily output of this “process” if 8 hours of processing time is available each day?

asked by Dj on January 30, 2011
41. ## can some pleas edit my essay? thanks!

A revolution is an overthrow of the government or politic system by the people who they govern. Violence is an act of aggression and anger. Violence is never the way for justice; but according to a reactionary violence is the way. They argue violent

asked by Post a New Question on May 2, 2007
42. ## Statistics

In a gambling game a man is paid \$5 if he gets all heads or all tails when 3 coins are tossed, and he pays out of \$3 if either 1 or 2 heads show. what is his expected gain or loss of the 3 coins?

asked by Barney on May 6, 2017
43. ## Precalculus

find the equation of the cubic equation show graph passes through the points (3,0) and (1,4) and is tangent to the axis at the origin??? I honestly cannot figure this out and can you explain the graph to me too?

asked by Sam on October 23, 2012
44. ## algebra

If the area of a square is 9x2-12xy+4y2, what is the perimeter of the square in terms of x and y. *its 9x squared and 4y squared i have several problems like this on my homework if you show me how to do this one im sure i could figure out the rest

asked by Emily on October 6, 2010
45. ## physics

Please can someone show me how to go about this problem? The X-Y plane is illuminated by an electric field of strenght given as E=(24î + 60j + 70k) N/C; the flux through a 1.5m² portion of the illuminated plane is

asked by jay on May 29, 2016
46. ## LIFE ORIENTATION

3 ENVIRONMENTAL HEALTH HAZARD THAT CAUSE ILL HEALTH,CRISES,AND DISASTERS WITHIN YOUR COMMUNITY OR OTHER COMMUNITY WITHIN SOUTH AFRICA INCLUDING PICTURES ETC TO SHOW EVIDENCE

asked by NTSAKO MAKAMUS on April 26, 2013

Given: Let f: X -> Y be a function. Then we have an associated function f^(-1): P(Y) -> P(X), where f^(-1) (B)⊂X is the inverse image of B⊂Y. Question: Show that f^(-1) is one-to-one if and only if f is onto. [Notes: ⊂ represents subspace, I just

asked by Nic on November 3, 2011
48. ## physics pls help

Please can someone show me how to go about this problem? The X-Y plane is illuminated by an electric field of strenght given as E=(24î + 60j + 70k) N/C; the flux through a 1.5m² potion of the illuminated plane is

asked by jay on May 29, 2016
49. ## physics

An asteroid moves toward the sun along a straight line with a velocity given by v = -(c1+c2/x)½ , where x is the distance from the center of the sun. Use the chain rule for derivatives to show that the asteroid's acceleration is a = -c2 /2x^2.

asked by mitch on August 23, 2012
50. ## 5th math

find the missing numbers and landmarkd for the set of numbers below: 18,20,20,24,27,27,____,30,33,34,36,36,_ Range:22 Mode:27 Minimum______ Maximum:______ please! show me this problem so, i can do my next problem thank you!!

asked by pat on September 29, 2010
51. ## Pre Algebra

The temperature was 72 degrees F. At midnight a cold front moved in dropping the temperature 12 degrees F. Write a number sentence to show result. I need help! Thanks to anyone helping.

asked by Cheyenne on January 25, 2012
52. ## chemistry

Suggest a test chemical that can be added to a water sample to percipitate the lead(II) ions. show a chemical equation for the formation of the percipitate you have chosen.

asked by Penny on May 26, 2010
53. ## English

Choose the best answer. Something a film "pundit" would most likely be asked to do_________. a. star in a movie b. produce a film c. write a review d. direct a show Answer: a

asked by Kimmy on October 9, 2016
54. ## Math: Intro to Proofs

Given: Let f: X -> Y be a function. Then we have an associated function f^(-1): P(Y) -> P(X), where f^(-1) (B)⊂X is the inverse image of B⊂Y. Question: Show that f^(-1) is one-to-one if and only if f is onto. [Notes: ⊂ represents subspace, I just

asked by Nic on November 3, 2011
55. ## Physics 11

Show that the minimum force required to pull a wheel if Radius R and mass M over a step of height h, given R> h when the force is applied at the top of the wheel is F = Mg sqrt(h/2R-h) Thank you so much

asked by Raylene on November 7, 2013
56. ## Genetics biology

A man and his wife both have normal vision, but a daughter who has color blindness can the man sue his wife for infidelity? show the cross help me please, have been lots of people saying no and yes to this

asked by Mandy on February 20, 2015
57. ## calculus: multivariable

Find the points on the hyperboloid x2 −y2 +2z2 = 1 where the normal line is parallel to the line that joins the points (3,−1, 0) and (5, 3, 6). Please show me how to do it..the answer is [+- rad 6/(3), +- 2rad 6/(3), +- rad6/(3)]

asked by sara on May 3, 2008
58. ## Algebra 1

Hello. Can someone show me how to 'multiply and express the product in simplest form.' If I can get a detailed example for the first one, I could go my own way for the other two. 1. x - 3 (_______)^3 . 1 2 (______)^2 x - 3 2. x^2 - 9 _______ . x^2 - 4 x +

asked by Charlezetta on June 8, 2010
59. ## Calculus

There are two neighboring points P and Q on the curve f(x)=x^2 (a) Determine m(h), the slope of the straight line PQ (b) The slope, S, of the tangent at P is defined as S=lim h->0 m(h). Find the value of S. (c) Use this value of S to show that the equation

asked by Vincent on July 9, 2011
60. ## Science Physics

Madison pushes with a 160-N horizontal force on a 20-kg crate of coffee resting on a warehouse floor. The force of friction on the crate is 80 N. Show that the acceleration is 4 m/s2.

asked by Peg on May 17, 2014

An object is moving in a plane. At time t =0,it is at origin O, and moving with velocity u. After 2 seconds, it is at A, where OA = -2i - 4j. After 3 seconds, it is at B, where AB= 10i -40 j. Show that this is consistent with constant acceleration a. Find

asked by Jat on February 26, 2012
62. ## chemistry

An electron in a hydrogen atom relaxes to the n= 4 level, emitting light of 138 THz . What is the value of for the level in which the electron originated? Please show each step and the equation.

asked by lorah hilpolep on November 28, 2010
63. ## physics

1. what is the specific heat of an object if the heat needed to change its temperature from 40degree celsius to 75degree celsius for 75 kg of it is 536 kcal? Please show me how to oompute it.

asked by jen on August 13, 2014
64. ## English

Thank you very much! Just one more thing. Should I evaluate the following sentence a mistake? 1) The journalist asked where I was going to sing ...... (istead of "asked me") The officer asked if I could show him my permit (instead of "asked me£) Thank you

asked by Henry on March 5, 2012
65. ## MATH

convert the map scale to a unit rate how many inches represent one mile? show the interpret the meaning of the unit rate 3/10in = 7/8mi

asked by puchupuchu gaming on December 4, 2015
66. ## Maths

In the village school the ratio to boys to girls is 5:6. there are 175 boys. how many girls. please show me full working out but don't give me the answer as I want to find it out for myself. I just need to know how to do it. Thank you

asked by Anonymous on November 25, 2014
67. ## Math kindergarten

The question in the math kindergarten homework is : Have children count the birds in the picture and then draw the correct number of counters to show how many. How do you draw counters? Thanks.

asked by Rap on October 9, 2012
68. ## physics

a geostationary satellite for communications seems to be in a fixed spot above the equator because it has the same angular velocity as the earth. show that if it goes round once a day its angular velocity w is a little over 7*10^-5 rad/s.?

asked by wondesen haftamu on December 3, 2018
69. ## physics

Consider a ball of mass m1 moving with a velocity u1 collides elastically with a ball of mass m2 at rest.Show that the maximum energy transfer takes place when m1=m2.

asked by Nantu on September 2, 2011
70. ## math

the volume of an cylindrical can with a radius r cm and height h cm is 128000 c^3, show that the surface area of the can is A=2(22/7)r^2 + 246000/r. Find the value for r to minimize the surface area. *i know what the quest. ask but i do not know how to

asked by Yuni on July 29, 2011
71. ## math

What is the area of the rectangle with the width of 6x^2 and the length of 12x^3? hint: x=5 I got 6*5^2=900; 12*5^3=216,000 for a total of 216,900 is that correct? If it is wrong can you show me how to do them? THANKS

asked by donutsforlifebruh on January 6, 2015

Write an equation in standard form for a line with an x-intercept of 2 and a y-intercept of 5. I cannot find any examples of how to do this problem, all of the examples that I have show how to do it with a slope and point. Any help would be great! Thanks.

asked by Lucy on June 21, 2008
73. ## Math/Vectors

If a point on the surface of a sphere with its center at the origin has coordinates (9,4,6) how do you show the radius connecting the origin to this point as a position vector. Is it simply [9,4,6] or is it more complicated than that. Thanks.

asked by Kate on October 17, 2010
74. ## Calculus

Find the limit as x approaches infinity of sin(2x)/x The answer is 0. How can I show that this is an indeterminate form so I can use L'Hopital's? And even if I use L'Hopital's, it comes out to be 2cos(2x), which doesn't help if I replace x with infinity.

asked by John on November 22, 2008
75. ## math

describe a real world relationship between the area of a rectangle and its width, as the width varies and the length stays the same. Sketch a graph to show this relationship.

asked by Robert on October 6, 2015
76. ## Math I DONT UNDERSTAND!HELP PLZ

when the temperature is 68F'the speed of sound is approximately 343 meters per second. Approximately how many kilometers does sound travel in 5 seconds? PLZ HELP SHOW ME TELL ME JUST LET ME UNDERSTAND!!!thanks!

asked by Sparkles_01 on April 3, 2016
77. ## geometry

Draw an equilateral triangle ABC with side length 4cm to scale and then draw dotted lines to show all axes of symmetry of this triangle

asked by Nelly on April 14, 2015
78. ## physics

a block weighs 200 N and is being held against a door. The coefficient of static friction between the door and the block is 0.470. What is the minimum force applied? Please show how you got it

asked by billy on April 19, 2015
79. ## physics

a golf ball is launched at a 37 degree angle from the horizontal at an initial velocity of 48.6 m/s. state the initial velocity in rectangular coordinates. please show me how to figure this out

asked by aimee on June 24, 2011
80. ## Chemisty

Im totally lost on how to do redox reactions. Can any one show me the steps on how to do MnO4-1 +C7H60 => Mn2 +c7H6O2? im trying to study for a test and im totally lost. thanks in advanced.

asked by Kelly on May 31, 2010
81. ## math

Show how a 13 by 13 square can be decomposed into 11 non-overlapping squares whose side lengths are integers (with sides parallel to the sides of the big square), if the largest subsquare is 7 by 7.

asked by haha on April 12, 2011
82. ## math

Find the perimeter of a rectangular area with a length of 13 inches and a width of 7 inches. Calculation With Distribution (Show all steps.) plase help me i dont know how to do this with distribution

asked by i am dog on November 21, 2017
83. ## physics

Show that for 1 kg of pure gold the volume of water displaced is 51.8 cm^3 I know that the density of pure gold is 19.32 gm/cm^3 so 1 kg/19.32 gm/cm^3= 0.05175 ? I have come along way with this problem and feel like I am close, but now I need help. How do

asked by randy on November 21, 2008
84. ## Math

Pat paid \$35 for a shirt that originally cost \$50. What percent of the original price did the shirt cost? Please show working. I calculated it to be 30% but the answers provided are (a) 40% (b) 65% (c) 70% (d) 85%.........Please Help me

asked by Devon on February 3, 2012
85. ## space

Stars near the ______ should show the greatest Doppler shifts due to the earth's revolution. Why? Would it be stars near the ecliptic because it deals with the earth revolving and having motion.

asked by Anonymous on October 25, 2010
86. ## statistics

show that in the binomial distribution (q+p)^n the ratio of the mean deviation about about the mean to standard deviation is 2/(npq)^0.5*n-1 cµ-1p^µ-1 q^n-µ where µ is the greatest integer contained in np+1 . find the limits of the above ratio as n

asked by urmila on January 10, 2012
87. ## physics

a train leaves the station at a 0.0-m marker travel;ing with a constannt velocity of 36.0m/s a) how many seconds later will the train pass the 1620.0-m marker? could you please show me how to do this and also what the formula is?

asked by kerri on September 17, 2009
88. ## Math

Eric had 13 tiles to arrange in a rectangular design. He drew a model of the rectangles he could make with the 13 tiles? How does Eric's drawing show that 13 is a prime number?

asked by Anthony Garcia on September 13, 2016
89. ## math

a clock is set right 9:00 pm and it gains 1 min in the first three hours and loses 1 min in every fourth hour and follows the same pattern there on .identify the time the clock will show at 1:00 pm the next day .

asked by sonali on August 8, 2019
90. ## Assignment help (chemistry)

in the reaction, N2O4-->2NO2, if the rate of formation of NO2 were 0.010 mol/L*s,, what would be the rate of decomposition for N2O4 Plz show steps thx

asked by Tarkan on November 10, 2011
91. ## Algebra-help

1. What is the Algebraic expression for the following word phrase: the quotient of 8 and the difference of x and m? 8/x-m * 8-x/m x-m/8 8-x/m 2.Which sum of difference is equivalent to the following expression? 5-3x/5? 1+3/5 1+3x/5 1-3x/5 * 25-15x * is my

asked by Cassie on August 27, 2013
92. ## maths

find the gradient of the tangent to the parabola y=4x-x^2 at (0,0) hence calculate the size of the angle between the line y=x and this tangent. (as i cant show you the diagram all that it shows is the line going through (0,0) and having one point of

asked by mr maths on January 1, 2010
93. ## science

Hi I have 2 questions I hope someone can help me :) 1)A pocket of gas is discovered in a deep drilling operation. The gas has a temperature of 480c and is at a pressure of 12.8 atm. What volume of gas is required to provide 18.0 L of gas at the surface

asked by lindsay on March 25, 2007
94. ## sociology

From a functionalist perspective, how has human behavior and our way of life contributed to environmental problems? So far I have the premise that functionalist examine the entire system itself. Human activities have become a dominant influence on the

asked by nameless on December 2, 2011
95. ## Technology

• Prepare a 1,400 to 1,750-word paper detailing how a new technology system should be implemented or introduced to a company. Include your recommendations as if you were the manager in charge of implementing the new technology. Give your ideas on how the

asked by Shannon on September 28, 2011
96. ## a level chemistry

two most abundant atmospheric gases react to a small extent at 298K in the presence of a catalyst to achieve dynamic equilibrium: N2(g) + O2(g) ->/

asked by esther on September 7, 2014
97. ## sociology

From a functionalist perspective, how has human behavior and our way of life contributed to environmental problems? So far I have the premise that functionalist examine the entire system itself. Human activities have become a dominant influence on the

asked by nameless on December 1, 2011
98. ## statistics

A researcher wishes to estimate the proportion of college students who cheat on exams. A poll of 490 college students showed that 33% of them had, or intended to, cheat on examinations. Find the margin of error for the 95% confidence interval. solution I