# 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 583
1. ## scince

A girl lifts a 12 N weight 1.5 meters. How much work does she do on the weight?

asked by autum on April 11, 2011
2. ## Physics

Find the work necessary to run a football (1 lb) from the 2-m mark to the 52-m mark.

asked by Mirania on October 23, 2015
3. ## PHYSICS!!!

If a machine cant multiply the amount of work , what is the advantage of using such a machine?

asked by Carly!!!!! on January 24, 2010
4. ## life orientation

what unethical behaviour is taking place in the work place?

asked by Anonymous on March 10, 2013
5. ## Science

If I push a book 1.5 m across the table using a constant for of 10 N, how much work do I do on the book?

asked by Cameron on January 13, 2015
6. ## Physics

A motor does 5,000 of work in 20 seconds what is the power of the motor

asked by Anonymous on December 14, 2010
7. ## grammar

Plural possesive of Mr. Valdez. (i.e., Mr. Valdez's performance at work....)

asked by Linda on October 17, 2012
8. ## question about math (law of syllogism/detachment)

Does anyone know about the law of syllogism and law of detachment. If so, can you check my work.

asked by Candy on September 13, 2009
9. ## science

Which requires more work - running around the block or walking around the block?

asked by Lenny on December 2, 2009
10. ## math

i have 3 numbers 10,7,and 6 and need to make them work in 35...but it cant be like 7 into 35 it has to be all 3 numbers and can be used more than once but after another number like 10 + 7 +10 ect

asked by becky on March 7, 2012
11. ## Ap CHem

For how many electrons in Sr. Does A)n=4; l=1 B)n=3;l=2;ml=1 C)n=1;l=1;ml=0 You must know the variations possible. n = 1, 2, 3, ...... l = 0, 1, 2, etc up to n-1. ml=-l to +l (this is -ell to +ell) ms = +/- 1/2 Start with n = 1 and work your way up.

asked by Susie on October 29, 2006
12. ## sci 230

The DNA creates new proteins but once the proteins are created, can they work by themselves

asked by meshelle on April 17, 2009
13. ## math

how would i work this out sari has 7/12 yards of material does she have more or less than 8 yards of cloths?

asked by angel on March 31, 2008
14. ## Math

here are some fractions : 3/9, 8/9, 7/9, 4/9, 2/9, 5/9, 6/9 If I were to put them in the order of the greatest, what order does that mean and how did you work that out?

asked by Blake on April 30, 2010
15. ## communication

we know that relationships develop in satges. how does movement through relationships work

asked by A on December 1, 2012
16. ## Physical Science

A machine you designed has an efficiency of 60%. What happens to 60% of the work put into the machine, and what happens to the other 40%?

asked by Alex on January 28, 2014
17. ## Math

Need help solving for x with work shown 2log6(4x)=0 Log2(x)+log2(x-3)=2

asked by Bob on January 27, 2016
18. ## trig!!

sin^4 x (cos^2 x)=(1/16)(1-cos 2x)(1-cos4x) work one 1 side only!

asked by Hayden on February 23, 2009
19. ## Science

All forms of energy can do work. A.true B.false I think this is true..?

asked by Cassie on March 25, 2013
20. ## College Accounting

What changes have you had to make in your life to make the college experience work for you?

asked by Lynne on February 1, 2010
21. ## algebra

How would you explain how the laws of exponents work with rational exponents?

asked by C on July 6, 2008
22. ## Chemistry check

H2O2+MnO2 -----> MnO2 + H2O Is my work correct?

asked by Rain on May 25, 2015
23. ## Physics

A 10 g particle is moving to the left at 20 m/s. How much work must be done on the particle to cause it to move to the right at 46 m/s?

asked by Hayden on February 16, 2012
24. ## Calc. Help

Simplify. #1. 5(2-i) - 3(4+3i) ..my work: 10-5i-12-9i -2-14i Do you leave this as the answer or can you simplify it further? #2. (2-i√2)²

asked by Hayden on August 26, 2010
25. ## science

How much work is done in raising a 16.1 kg backpack from the floor to a shelf 1.82 m above the floor?

asked by jus jo on February 17, 2018
26. ## physics

A 75 particle is moving to the left at 29 . How much work must be done on the particle to cause it to move to the right at 46 ?

asked by Anonymous on November 28, 2012
27. ## physics

A 33 g particle is moving to the left at 22 m/s. How much work must be done on the particle to cause it to move to the right at 46 m/s?

asked by kollin on October 17, 2010

How can health care providers work together within the continuum of care?

asked by April on September 6, 2012
29. ## physics

a particle moves under the effect of force f2 from x=0 to x=4 of the work done by force

asked by ashish on August 31, 2014

1. Write the following ratio in simplest form: 32 min:36 min 8:9 8:36 32:9 128:144 2. Marie saved \$51. On Wednesday, she spent \$8 of her savings. What ratio represents the portion of her total savings that she still has left? 43:8 8:51 43:51 59:51 3. The

asked by Delilah on October 30, 2012
31. ## IT

Why is the waterfall model valuable in the management of information technology projects? Refer to "Arguments for the Waterfall Model" in http://en.wikipedia.org/wiki/Waterfall_model The waterfall model is a sequential software development model (a process

asked by Maria on February 28, 2007
32. ## PHYSICS

A 54.0-cm diameter disk rotates with a constant angular acceleration of 2.0 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this

asked by Kevin on July 13, 2011
33. ## English

1.Edgar Allan Poe uses foreshadowing in "The cask of Amontillado" to create mystery in which of the following quotes? A." He had a tight-fitting parti-strip dress, and his head was surmounted by the conical cap and bells." B."And as for Luchresi, he cannot

asked by GummyBears on May 7, 2016
34. ## Physics

A 0.400 kg block of wood hangs from the ceiling by a string, and a 0.0700 kg wad of putty is thrown straight upward, striking the bottom of the block with a speed of 6.40 m/s. The wad of putty sticks to the block. How high does the putty-block system rise

asked by Physics on April 29, 2010
35. ## English

Can you check these sentences, please? 1)If you want to reduce this problem (a synonym for reduce?) 2)He thought that in a man there are good and evil parts (there is a good and an evil part) 3)You have to reuse them (instead of use them more times) 4)He

asked by Franco on January 7, 2010
36. ## Math

Can someone please help me with an algebra problem? -|4-8b|=12 I really get confused with the absolute value symbols and a negative sign outside of them. Don't worry about it; it does tend to be a bit confusing. I'll explain the difference between inside

asked by Andrea on September 14, 2006
37. ## algebra help

The cost of producing a number of items x is given by: C = mx + b In which b is the fixed cost and m is the variable cost (the cost of producing one more item). (a) If the fixed cost is \$40 and the variable cost is \$10, write the cost equation.and then

asked by TOMMY on April 3, 2007
38. ## Finance

Omega System Services, a member of the Omega Health Foundation operates a free-standing ambulatory care center that averages \$60 in charges per patient. Variable costs are approximately \$10 per patient, and fixed costs are about \$1.2 million per year.

asked by Karam on June 24, 2011
39. ## Psychology - Writing Paper

Multiple sclerosis [MS] is a disease that targets the central nervous system causing dysfunction in the area(s) of the brain it attacks. Use the Multiple Sclerosis Foundation webpage, along with your text reading to learn about the disease and its impact.

asked by Anonymous on October 4, 2009
40. ## math

Omega System Services, a member of the Omega Health Foundation operates a free-standing ambulatory care center that averages \$60 in charges per patient. Variable costs are approximately \$10 per patient, and fixed costs are about \$1.2 million per year.

asked by Luke on August 25, 2011
41. ## algebra ll

describe the system 6x minus 2y equals 10 and 9x minus 3y equals 8 as consistent and independent, consistent and dependent , or inconsistent. explain. i put consistent and dependent .

asked by Anonymous on October 6, 2008
42. ## Accounting For Assets

Kenya Sweets Ltd. Made the following purchases of new Amigo Chocolate products during 2019: - 10th January 2019: - 1,000 Units @ Ksh. 28.00 each - 14th February 2019: - 1,500 Units @ Ksh. 28.20 each - 17th March 2019: - 3,000 Units @ Ksh. 28.40 each - 18th

asked by KNN on June 17, 2019
43. ## Psychology

1. Modern psychoanalysis is defined as ____________________. (1 point) A treatment that focuses on observable behavior A treatment method for mild to moderate disorders that uses a process of patient discovery Demonstrating how unconscious factors affect a

asked by Anonymous on May 22, 2018

Assume that at the beginning of 2000 Speedy Delivery a Fed Ex competitor purchased a 737 aircraft at a cost of 60,000,000 Speedy Delivery expects the plane to remain useful for 5 years (5 million miles) and to have a residual value of 5,000,000 Speedy

asked by Ronnie on January 5, 2010
45. ## accounting

My friend Robert Hughes runs hardware business in down town Dallas. Because of competition he relies on neighborhood customers for sales. From inception of operations to December 31, 2010, Robert Hughes Hardware Company provided for uncollectible accounts

46. ## books (Henry VIII)

I know I have posted this question before put under the wrong context I accidentally wrote Hamlet instead of Henry VIII. That's because I was working on both pieces of work. My answers have changed and want to know if they are correct. Please check over my

asked by Suzanne on October 30, 2013
47. ## Science

How can a graduated cylinder marked in milliliters be used to measure the volume of a small wooden block? Hurry up and answer this for me!!!!!! put 100ml water into the cylinder, then put the block into the water and measure how many ml are indicated on

asked by Margaret on September 14, 2006
48. ## chemistry

A 100.0 ml sample of 0.300 M NaOH is mixed with a 100.0 ml sample of 0.300 M HNO3 in a coffee cup calorimeter. Both solutions were initially at 35.0 degrees celcius; the temperature of the resulting solution was recorded at 37.0 degrees celcius. Determine

asked by jen on July 12, 2012

plz plz help me with my assignment. This is the assignment:- •Your favorite cousin has moved to your town and is looking for a job. •Her previous experiences are working as a cashier and sales clerk at two department stores. •You know she plans to

asked by jinal on November 10, 2011
50. ## economics

1. The rationale for punishment and correction comes from A. the social contract theory. B. RawlsÃ‚’s theory. C. utilitarianism. D. egoism. 2. The two major justifications for treatment and punishment are A. incapacitation and deterrence. B. just

asked by Anonymous on August 14, 2009
51. ## Chemistry - Stoichiometry/gases

When 2.38 g of methane burns in oxygen, 119 kJ of heat is produced. What is the enthalpy of combustion (in kJ) per mole of methane under these conditions? Your answer will be in kJ/mol. the Molar Mass of methane is 16.04, so I did 2.38g/16.04=0.14838 mol

asked by Jamie on July 23, 2017
52. ## Physics

An ice cube of mass 100 g and at 0C is dropped into a Styrofoam cup containing 200 g of water at 25C. The heat of fusion of ice is 80 cal/g and the specific heat capacity of water is 1.0 cal/g C°. Assuming the cup doesn't exchange any heat, the final

asked by DariaV on July 28, 2019
53. ## Physics

Two crates, of mass m1 = 60 kg and m2 = 130 kg, are in contact and at rest on a horizontal surface (Fig. 4-54). A 620 N force is exerted on the 60 kg crate. The coefficient of kinetic friction is 0.15 a)Calculate the acceleration of the system. b)

asked by Syl on October 11, 2010
54. ## Physics

A 11.0-g bullet is fired horizontally into a 101-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 160 N/m. The bullet becomes embedded in the block. If the bullet-block system

asked by Kelly on November 11, 2012
55. ## Physics

A vertical spring has one end attached to the ceiling and a 2.50 kg weight attached to the other one. When the system is at rest, the spring is stretched by 20.0 cm. Now let the weight drop from a position in which the spring is not deformed at all.Use the

asked by Timo on June 29, 2011
56. ## physics

A 10.0-g bullet is fired horizontally into a 101-g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring having spring constant 155 N/m. The bullet becomes embedded in the block. If the bullet-block system

asked by lilly on November 11, 2012
57. ## Physics

I was wondering if my answers are correct. Thanks in advance. 1. A boy pushes down on a car rolling horizontally down the road. The boy pushes down vertically with 10N of force as the car rolls 3.0m horizontally. What work is done? my answer: 30 N•m (or

asked by Liz on February 3, 2014
58. ## Chemistry

A concept map was to be created on acids and bases. The concept terms that were given to use were: aqueous solution,bases,acids,ions,weak bases, strong bases, strong acids, weak acids,dissociation, weak electrolyte, strong electrolyte,reaction,salt,

asked by Hannah on October 23, 2011
59. ## Math/calculus HELPPP

Graph the system of inequalities, and label each with a vertex with its coordinates. y-2x≥-3 y+3>−x 3y−2​x≤12 2y+x

asked by Ashley on November 20, 2017
60. ## Transportation and Cargo Secuirty

Identify an asset such as an airport or a shipping company within the global transportation system. What does this mean? What is an asset of an airport or shipping company?

asked by chris on April 15, 2012
61. ## algebra II

Select the best possible first step to solving the system by first eliminating the y variable. x + 8y = –4 2x – 4y = –13 Multiply the first equation by 2. Multiply the second equation by 2. Multiply the first equation by –2. Multiply the second

asked by connor on May 19, 2011
62. ## chemistry

100 mL of is initially at room temperature (22)C. A chilled steel rod at 2 C is placed in the water. If the final temperature of the system is 21.2 C, what is the mass of the steel bar? Specific heat of water = 4.18J/g(C) Specific heat of steel =

asked by Lilit on October 20, 2008
63. ## Physics

a metal ball of radius R is placed concentrically inside a hollow metal sphere of inner radius 2R & outer radius 3R. The ballis given a charge +2Q and the hollow sphere a total charge -Q. Calculate. electrostatic potential energy of system.???

asked by Star on May 13, 2018
64. ## Chemistry Urgent

95.0mL of H2O is initially at room temperature (22.0∘C ). A chilled steel rod at 2.0∘C is placed in the water. If the final temperature of the system is 21.3∘C , what is the mass of the steel bar? Specific heat of water = 4.18 J/g⋅∘C Specific

asked by Anna on March 11, 2014
65. ## Psychology

What is the realm of mind and consciousness? How does the realm of mind and consciousness relate to the physical body? Is there such a thing as an independent mind that transcends physical functions of the body through the central nervous system? Why or

asked by Maple C. on August 14, 2011
66. ## PHYSICS

A light spring (k= 130 N/m) is compressed 15 cm between two masses (1.2 kg and 2.4 kg) on a frictionless surface. The system is released and the masses fly apart. Which mass will have the larger magnitude momentum? Why? Which mass will have more kinetic

asked by Camille on February 23, 2016
67. ## physics

If only external forces can cause the center of mass of a system of particles to accelerate, how can a car on level ground ever accelerate? We normally think of the car’s engine as supplying the force needed to accelerate the car, but is this true? Where

asked by Sandhya on February 18, 2010
68. ## u.s. history

Which cash crops were the most successful in the international interdependence system? Cotton, corn, squash, hemp Indigo, cotton, rice, tobacco *** Indigo, corn, potatoes, rum Tobacco, corn, rice, pumpkins

asked by Labbayk on January 8, 2016
69. ## engineering

A steel cylinder has a volume of 0.26 L and holds 4 kg of water at 25˚C and 200 kPa. (a) Find the total mass and total volume of the system (cylinder + water). (b) Give the values for two EXTENSIVE properties and two INTENSIVE properties of the water.

asked by nick on August 29, 2012
70. ## Physics

For anti-ballistic missile system, the time of flight tf is determined by the initial speed v0 of the missile and the range R. What is the time (in minute) of the flight tf available to kill an incoming intercontinental ballistic missile launched from

asked by Maxx on October 2, 2011
71. ## MATH INTEREST

A FACTORY INCREASES THE PRODUCTION OF CARS ANNUALLY BY 8%. IF PRESENTLY IT MANUFACURES 211,000 CARS PER YR, HOW MANY CARS WILL IT MANUFACTURE PER YR AFTER 4 YRS... i BELIEVE THE ANSWER IS 287063 BUT IM UNSURE OF THE FORMULA... COULD YOU PLEASE SHOW FORMULA

asked by paully on November 7, 2010
72. ## Physics

A man holds a flower pot out a window 12m from the ground. He tosses the pot upward with a speed of 5m/s. How long does it take the pot to reach the ground? How fast is it moving just before it hits? Please show steps.

asked by Iris on September 25, 2013
73. ## Calculus

A curve is defined by the parametric equations: x = t2 – t and y = t3 – 3t Find the coordinates of the point(s) on the curve for which the normal to the curve is parallel to the y-axis. You must use calculus and clearly show your working, including any

asked by Daksh on July 18, 2014
74. ## maths

at a fairground, the table shows the prbability of winning an amount on a spinner. what is the minimum amount that can be charged to make profit from the game? amount 5p 10p 20p 50p prbability 0.5 0.25 0.15 0.1 can you show how you worked it out? thanks

asked by ?????? on November 25, 2012
75. ## physics

Fleas can jump quite high; experiments show that they reach an altitude of 130 times their own height when they jump vertically! Suppose instead that a flea can jump so that it lands a maximum distance of 19.60 cm away. What is the take-off speed for this

76. ## Math

There were 7,404,000 unemployed American workers in 1995. In 1980, there were 7,637,000 Americans unemployed. a. What was the average change in unemployment for each of these 15 years? b. If this decline continues at the same rate, how many Americans will

asked by Mariyka on September 17, 2006
77. ## Social Science

Write for me something about 'Role of women in India's struugle for freedom' with summary and some photos based on the above topic.And it should also contain suitable heading.Introduction part is the must in the whole. I need all this to be done because

asked by Manali on June 19, 2006
78. ## Science

Which distance is the greatest ? A. The distance across the Milky Way Galaxy. B. The distance to the nearest star Cluster. C. The distance across the solar system. D. The distance to the nearest Galaxy.

asked by Natalie on January 30, 2012
79. ## math

In a car repair shop there are 50 cars to be repaired . It is estimated that 23 of that cars need new brakes , and 34 of that cars need to repair the exhaust system . a. How many cars are in need of repair at least two? b . What most cars that are not in

asked by Iman on April 7, 2015
80. ## cal

The end plates (isosceles triangles) of the trough show below were designed to withstand a fluid force of 5800 lb. How many cubic feet can the tank hold without exceeding this limitation? Assuming the density is 62.4 lb/ft^3, the maximum volume is ____

asked by tony on December 26, 2013
81. ## AIS

Regarding COBIT, which of the following statements is true? a) COBIT means Cost Objectives for Information and Related Technology b) COBIT rejects the definition of internal control from the COSO report c) COBIT states that a company’s management should

asked by Anonymous on December 3, 2013
82. ## american history

What was the Reagan Doctrine? The Reagan administration’s policy to liberate South America from European imperialism. The Reagan administration’s system for codifying other nations by the level of danger they posed to the United States. The Reagan

asked by dianni on June 4, 2019
83. ## World History

During the empire the roman legal system contributed to : A. The outbreak of cival war B. Further conquests C. The downfall of the emperor D. Unity and stablity I got D. Which of the following statements generally describes romes attitude towards the jews

asked by sarah on January 9, 2012
84. ## Physics

A spring has a force constant of 100N/m and an unstretched lenght of .07 m. One end is attached to a post that is free to rotate in the center of a smooth table. The other end is attatched to a 1 kg disc moving in uniform circular motion on the table,

asked by Tammy on March 25, 2007
85. ## Health and Physical education just three questions

1 The Body's reaction to information is to send these to the brain. A neurons B impulses C dendrites D synapse 2 The part of the brain that controls movements and balance is the A cerebrum B derebellum C brain stem D frontal lobe 3 When diving into water,

asked by Edward Elric on March 2, 2018
86. ## economics

(2 points) Suppose that the following equations describe an economy (C, I, G, T, and Y are measured in billions of dollars and r is measured in percent; for example, r = 10 means r = 10%)

asked by kojo on August 16, 2010
87. ## precalc

Solve. Give the answers in degrees so that 0° ≤ θ < 360°. 1) (5 cos θ - 1) / 2 = 1 answers: 53°, 127°, 233° 2) 3 cot (2θ) + 3 = 0 3) tan^2 θ + 2 sec^2 θ = 3 is my answer for #1 correct and i'm not sure how to do #2 and #3.

asked by owen on October 29, 2015
88. ## Math

Complete the following statement in the best way: Before you can solve any formula for area or volume, you must be sure that all your measurements are in the same __________. a. number of digits b. proportion c. decimal value d. Units I believe it is UNITS

asked by Diane on September 23, 2008
89. ## another algebra question

Here's another thing I must solve: For each graph of a function, determine these things: a. f(1) b. domain c. any x-values for f(x)=2 d. range I can't put the graphs I need up here, but is anyone able to explain how you would find these things? Thank you

asked by Celina on December 4, 2008
90. ## Math

9. how you would convert the repeating, non terminating decimal to a fraction? explain the process as you solve the problem. 0.1515 I don't understand this question can someone help explain this?

91. ## Math

How would I solve for t if y equals 720 minutes of daylight and t=the number of days in 2012 720 = 713.7+152.7 sin [(2pi/366)(t-80.75)]

asked by anna on November 26, 2012
92. ## algebra

Janelle has \$ 20 and is saving \$ 6 per week. April has \$ 150 and spending \$ 4 per week , when will they both have the same amount of money ? i know by trial and error i will get 13 weeks, but how do i solve it by algebra ? please

asked by al on January 10, 2012
93. ## algebra

joey and helen are standing in opposite corners of a rectangular field. if the field has dimensions 120ft by 209 ft, how far apart are they? Please help me solve this and lead me through the problem , thank you. :)

asked by katy on November 5, 2018
94. ## Algebra 2

Solve the following systems of equations graphically. Please state your answer as an ordered pair (x,y). (Do not put spaces between any part of your answer, or it will not be graded as correct.)

asked by Quita on March 29, 2010
95. ## pre calc

i have to use the inverse of tangent to find a missing angle in a triangle. the know sides are x+1 and 10. since i am using tangent, it should be arctan theta=x+1/10 my question is how do i solve this? i don't want the answer just HOW.

asked by crim on February 25, 2011
96. ## physics

A ball is thrown vertically into the air and when it returns after an interval of 2 seconds it is caught. What is the acceleration of the ball after leaving the hand? I have no idea how to solve this!

asked by Jake on September 27, 2009
97. ## Chemistry

How much heat is given off when 24.0 g of methane is burned in air? The equation for the reaction is: CH4 + 2O2 => CO2 + 2H2O + 890 kJ What equation or formula should I use to solve this? Thanks!

asked by Lily on March 29, 2010
98. ## math

Karla went shopping and bought a dress for 5 1/2 dollars and a skirt for 2 3/5 dollars/ If she paid for the clothes with a \$20. how much money did she have left? how do i solve this problem using models

asked by Tonya on October 28, 2015
99. ## Physics

A lady applies makeup using a concave mirror with a focal length of 10 cm. At a distance of 6 cm from the mirror, how large does her 4 cm wide eye appear? Solve mathematically

asked by Desperate on May 20, 2013
100. ## Algebra II

Solve x^2+2x=-2 by graphing and indicate the roots.Please and thank you We can't draw graphs for you here. The roots are x = -2.73 and -0.73 I suggest you make your own graph of y = x^2 + 2x and see where it crosses the horizontal line y = -2. Choose x

asked by Jonathan on August 8, 2007