# 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 257
1. ## Math

integrate (x^2+8)/(x^2-5x+6) by partial fractions method. I first did long division, and came up with 1+((5x+2)/(x^2-5x+6)). Then I did partial fraction for (5x+2)/(x^2-5x+6) by going A/(x-3)+B/(x-2) and I got 17/(x-3)-12/(x-2) to take the integral of. But

asked by Betty on February 27, 2016
2. ## Math: Calculus

The equation: 10(x-1)(x-2)(x-3)=1, has three real solutions a

asked by REALLY NEED HELP!!!! on November 4, 2010
3. ## grade 12 AP calculus

for f(x= -1/4x4-1/3x3+2x, use analytic method to find the exact intervals on which the function is a)increasing, b)decreasing, c)concave up, d)concave down, then find any e)local extreme values, f)inflection points

asked by Alannah on December 3, 2012
4. ## Programs and Services

Which type of instructional method is based on arranging the environment to best stimulate a child's interests and behaviors? A. Developmental perspective B. Ecological perspective C. Behavioral perspective D. Interactional perspective my answer is c.

asked by Diana on November 18, 2018
5. ## Biochemistry

Just quickly, I need someone's opinion/facts of the knowledge: is hydroelectricity better than solar energy (or vise versa) and why? I know that h.e. is one of the ways that Ontario gets their energy, and that both are renewable. I also know that solar is

asked by Chase on March 28, 2008
6. ## physics

How will you find the height of a tall tower using a long-enough thread? You only have a stop-watch with you. So you can only measure time and not length. Explain the method by stating the formula you will use to calculate the height of the tower.

asked by calous --- HELP PLEASEE!!! on February 26, 2011
7. ## Bio- HELP?

Which of the following pairings of organisms and their method of obtaining nutrients is incorrect? autotrophs - chemosynthesis herbivores - algae detritivores - inorganic matter carnivores - other animals herbivores -algae seems more sufficent?

asked by Anonymous on May 5, 2016
8. ## Precalc

Hello, good afternoon. I need help with my precalc hw. we are learning about finding zeros I don't which method I should use for this problem: if i is a zero of x^3+3x^2+ix+(4+i) what do i do? synthetic divison? or long division? when i did long division i

asked by Samya on October 14, 2008
9. ## health

Utilization of a SWOT Analysis is a common method of comparing Internal and External factors that impact an organization. What are reasons why this type of analysis is beneficial for a health care organization?

asked by renn on March 11, 2011
10. ## Chemistry

In the analysis of a sample of drinking water, a rate of 25.00 mL of the water requires 16.04 mL of AgNO3 to 0.05647 M in order to achieve an end to the Mohr method. What is the concentration of chloride ions in the sample?

asked by David on March 9, 2017
11. ## chemistry

consider the following electrochemical cell: Pt(s) | Hg2^2+ (0.250M), Hg^2+ (0.800M) || MnO4^-(0.650M), H^+ (1.00M), Mn^2+ (0.375M) | Pt(s) Using the half-reaction method, write a balanced chemical equation for the electrochemical cell.

asked by Help Please!!!! on August 26, 2018
12. ## Science

gravitational forces are be acted on a space center what other data need to show the forces a-direction of the opposite force b-magnitute of the downward force graviatational forrces are being acted on a space station i think what other of the two data are

asked by hh on April 30, 2013
13. ## Chemistry

I was asked to consider the solubility for hydrated calcium sulfate in HCl. The principal acid my proffesor had posted for the solution was [ CaSO4(hyrdrated) + HCl H30^+ + Ca^2+ + SO4^2- ]. I guess what I'm asking is what happened to the Cl^- and why

asked by john peterson on June 17, 2007
14. ## Chemistry

A solution buffered at a pH of 5.00 is needed in an experiment. Can we use acetic acid and sodium acetate to make it? If so, how many moles of NaC2H3O2 must be added to a 1.0L of a solution that contains 1.0 mol HC2H3O2 to prepare the buffer. The Ka of

asked by Veronica on June 20, 2014
15. ## chemistry

In the following experiment, a coffee-cup calorimeter containing 100 mL of H20 is used. The initial temperature of the calorimeter is 23.0 C . If 3.60 g of CaCl2is added to the calorimeter, what will be the final temperature of the solution in the

asked by Colin on October 20, 2011
16. ## chemistry

Hi! i'm kinda having trouble getting this.. Don't understand it really from Ca(OH)2 + 2HCl-----> CaCl2 + 2H2O How do i calculate Ca+? :You need much more information. 1) do you mean the concentration of Ca+ ion? 2) is there excess HCl? What is given? ok It

asked by Mallory on March 3, 2007
17. ## Physics

One of the most powerful cranes in the world, operating in Switzerland, can slowly raise a load of 6000 tonne to a height of 12 m. (1 tonne = 1000 kg) The acceleration of gravity is 9.81 m/s2 . How much work is done by the crane? Answer in units of MJ I

asked by Danny on February 26, 2013
18. ## Calculus Help

Farmer Brown wants to fence in a rectangular plot in a large field, using a straight rock wall that is already there as the north boundary. The fencing for the east and west sides of the plot will cost \$3 a yard, but she needs to use special fencing, which

asked by Chris on April 24, 2014
19. ## english

I wrote five sentences but they all have to have different verb tense. Can u let me know if right are let me know what I need work on. 1.This class made me look at my financial future. Look is verb and its in present tense, 2. Financial planning is a class

asked by Renee on September 28, 2010
20. ## Chemistry - Density

Automobile batteries contain sulfuric acid. Calculate the number of grams of sulfuric acid in 0.500L of battery acid if the solution has a density of 1.28g/mL and is 38% H2SO4 (small numbers) by mass? Can you please answer this for me? density = 1.28 g/mL

asked by Tracey on October 5, 2006
21. ## Accounting 8

The following information is available for Walker Industries: Beginning work in process inventory \$30,000 Ending work in process inventory \$25,000 Cost of goods manufactured \$180,000 Compute total current manufacturing cost?

asked by miguel on September 9, 2014
22. ## Physics

A 900W motor is used to lift 275.51kg of bricks a distance of 30, to the roof of the building. a. If the motor ran for 90s how much work did it do? b. What is the potential energy of the bricks? I know how the calculate work, but I'm really confused about

asked by Jacie on January 6, 2011
23. ## Math

A company finds that one out of five employees will be late to work on a given day. If this company has 42 employees, find the probabilities that the following number of people will get to work on time. (Round your answers to 4 decimal places.) (a) Exactly

asked by Sarah Duensing on February 29, 2016
24. ## Accounting 8

The following information is available for Walker Industries: Beginning work in process inventory \$30,000 Ending work in process inventory \$25,000 Cost of goods manufactured \$180,000 Compute total current manufacturing cost?

asked by Vanessa on September 9, 2014
25. ## Physics

A mechanic uses a chain and block to lift a 875-kg engine 4.00 m to the top of the garage. The downward force in the chain over the 4.00 m distance is 5.00 x 10^4 N. A) Calculate the work done in raising the motor B) How much useful work was done? C) What

asked by Holly on January 16, 2014
26. ## Accounting 8

The following information is available for Walker Industries: Beginning work in process inventory \$30,000 Ending work in process inventory \$25,000 Cost of goods manufactured \$180,000 Compute total current manufacturing cost?

asked by Vanessa on September 9, 2014
27. ## Liberal Arts

Part 1: You finally made it…graduation day has arrived! Your parents are so proud that they are throwing you a HUGE party. They have rented a big tent for your graduation party just in case it rains. The inside of the tent (represented by the blue area)

asked by Brittney on January 14, 2012
28. ## chemistry

the experiment is a sequence of Chemical Reactions. Procedure part A preparation fo copper (II) Hydroxide-get a solution of copper(II)nitrate. measure 25ml of solution. to blue solution add 2mL of concertarted NaOH while stirring. Let mixture settle and

asked by Missy on September 15, 2010
29. ## Chemistry

Identification of an unknown powdered metal by reaction with HCl: Why does the pH of the HCl solution initially increase very slowly when an unknown metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds

asked by Ali on October 6, 2013
30. ## Chemistry

A test solution is prepared by pipetting 2.0 mL of an original sample into a 250 mL volumetric flask and then diluting to the mark. The concentration of iron in the test solution is determined (from a calibration curve) to be 1.66 μ g / mL or 1.66 ppm.

asked by Bob on April 9, 2019
31. ## Chemistry

For idometric titration of copper, why is HCl added to KIO3 and then titrated immediatedly? What would happen if iodine-thiosulfate titration was done in a highly acidic solution? If the copper reaction solution was basic, how would the iodine-thiosulfate

asked by Ken on November 16, 2011
32. ## Chemistry

Hi, I am trying to figure out how to calculate the average temperature of 2 different chemical solutions based upon the temperatures I measured. The question states: Find the average Ti of HCl & NaOH solutions. The Ti of NaOH solution is: 20.87 C The Ti of

asked by Jules on March 12, 2012
33. ## chemistry

A is a solution of HCL containing 7.30g/dm3.B is a solution ofX2CO3 containing 10.6g/dm3.assume that average volume of acid is 2.81cm3 and the volume of base is 25.00cm3.from your result and information .calculate (I)concentration of A in

asked by john kelechi on May 26, 2014
34. ## English

Choose music from a movie or a favorite TV show and explain in TWO paragraphs: 1) What is the theme of this movie/show? What support do you have for this theme? 2) Why does this music lend itself so perfectly to this particular theme? Be sure you explore

35. ## data

Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if appropriate. Tiny Hospital keeps information on patients and hospital rooms. The system assigns each patient a patient ID number. In addition, the

asked by adam on May 8, 2015
36. ## database management

2. Given the following business scenario, create a Crow’s Foot ERD using a specialization hierarchy if appropriate. Tiny Hospital keeps information on patients and hospital rooms. The system assigns each patient a patient ID number. In addition, the

asked by Maureen on May 18, 2012
37. ## Math

I'm having a bit of trouble with the following problem. Thanks! Kevin bought a new car for \$22,000. He made a down payment of \$5,500 and has monthly payments of \$406.69 for 4 years. He is able to pay off his loan at the end of 30 months. Using the

asked by SSS on August 3, 2014

What are the system's greatest strengths and weaknessess? Please help fast.

asked by Rayna on October 27, 2009
39. ## Math

"Solving a system involving three unknowns." 3d+e-2f=-14 2d-3e+4f=-23 5d+4e-10f=-13

asked by Anonymous on May 17, 2011
40. ## Math

How many solutions does the system of equations have? 4x+16y=12 y=-1/4x+9/12 a. one b. two c. infinitely many*** d. none

asked by Kaai97 on January 25, 2016
41. ## Health

Do you know of any websites that tell about the processes that are performed by the endocrine system?

asked by Amanda on April 23, 2009
42. ## science

I need help on a acrostic poem for nervous system. Anyone please do tomorrow

asked by benj on September 21, 2015
43. ## algebra

without graphing is each system independent, dependent, or consistent? -x-3y=0 x-y=4 please someone help me

asked by lee on January 2, 2013
44. ## SOCIAL STUDIES!!!

in what ways did whitneys system improve products

asked by jordan on November 28, 2011

What are the American Government system's strengths and weaknesses?

asked by Rayna on October 28, 2009
46. ## 5th grade science

Describe the function of the lungs in the circulatory system.

asked by PEYTON on March 6, 2010
47. ## Algebra

we are doing sloving system of linear equations by substituting 1)y=5x 2x+3y=34 i got (2,10) 2)x=4y 2x+3y=44 i got (16,4) 3)x=4y+5 x=3y-2 i got (-23,-7) 4)y=2x+3 y=4x-1 i got (2,7) 5)4c=3d+3 c=d-1 i got (6,7)

asked by Chris on November 18, 2008
48. ## Int algebra

Convert the system of equations into a matrix equation. x+4y-z=7 x+y+z=2 -2x-2y+2z=-8

asked by den on April 15, 2012
49. ## science

acrostic poem for "THE NERVOUS SYSTEM" please help been trying all day can get it

asked by ben54 on September 21, 2015
50. ## Science

Why is the Grand Canyon a natural physical system

asked by Chloe on January 9, 2016
51. ## Science

What are two examples of a physical system designed by peaple

asked by Sabrina on September 17, 2017
52. ## science

compare respitory system of a fish &human

asked by esha on May 21, 2012
53. ## Science

What is the best tool to create a model of a complex this system?

asked by Carley on December 10, 2013
54. ## Algebra

Which linear system of equation does the matrix represent [2 -3=10] [5 6=-12] is it {2x + 5y =10 {5x + 6y =-12

asked by bowershe on December 10, 2013
55. ## government

In a Federal System of Government, where does the power and authority come from?

asked by Salome on March 26, 2010
56. ## government

one of the major flaws of the elector college system is that

asked by Anonymous on September 29, 2008
57. ## CHEMISTRY

WHAT FACTORS ARE CONSIDERED TO BE STRESSES ON AN EQUILIBRIUM SYSTEM

asked by ANDREW on March 26, 2010
58. ## science

Is the gulf stream an open or closed system?

asked by jason on September 13, 2007
59. ## science

what is the system of grouping things based on properties?

asked by Kaitlyn on November 8, 2009
60. ## accounting

who would need to access an accounting information system and at what level?

asked by Debbie on June 11, 2009
61. ## social studies

What was the main economic system in the middle ages

asked by glenn on January 11, 2012
62. ## math

Select any two integers between -12 and +12 which will become solutions to a system of two equations.

asked by staci mae on November 15, 2009
63. ## Algebra

What are the solutions to the system? (Hint: graphing is the easiest!) y = x2 + 2x - 45 y = -3x + 5

asked by Selena on June 2, 2014
64. ## Government

Why is due process a cornerstone of the judicial system?

asked by Anonymous on December 6, 2015
65. ## Biology

What are 3 components of the regulatory control system of the body?

asked by Shane on January 25, 2011
66. ## macroeconomics

explin the inner and outer flows of an open system

asked by mike on March 29, 2012
67. ## math

Pivot the system about the element in row 2, column 1. –5 5 –7 10 4 4

asked by Leah on March 28, 2011
68. ## agriculture

name one intensive and one extensive system of poultry farming

asked by lucas on April 2, 2013
69. ## Science

Name one feed and feeding system in pig rearing.

asked by Sasha on October 24, 2012
70. ## Physiology

How does nervous system control the activity of writing

asked by Jumoke on April 2, 2013
71. ## math - linear equation

How do I write a system of equations that is linear and graph? Thanks

asked by hy on March 31, 2015
72. ## Math

Write 1.5 billion to indian place value system.

asked by Raj on June 11, 2016
73. ## American Government

if the U.S. were to have another constitutional convention, would we keep a federal system or change? why or why not

asked by Anonymous on November 3, 2010
74. ## american government

The federal system can be thought of as a marble cake because?

asked by james on June 29, 2014
75. ## US history

What is the purpose or reason for the Factory system and when was it invented????

asked by nicole on January 12, 2014
76. ## Math

How is graphing a system of inequalities similar and different than that of equations?

asked by Me on April 9, 2010
77. ## Science

How does technology help people with diseases of the digestive system?

asked by Alinna on December 11, 2012
78. ## Social Studies

who controls the economy in a free enterprise system

asked by Jerald on December 11, 2012
79. ## health

what is the system that moves the body and maintains its form

asked by vicki on October 23, 2008
80. ## American Government

If the U.S. were to have another constitutional convention, would we keep a federal system or change it? why or why not?

asked by Becky on November 2, 2010
81. ## Science

How does respiratory and cardiovascular system obtain nutrients?

asked by mercedes on June 1, 2011
82. ## Chem

What is the difference between an unsaturated system and an electron deficient one?

asked by Kimora on December 11, 2008
83. ## math

Write a matrix that represents the system of equations below. 7x – 3y = 21 5x – y = 85

asked by Alaina on April 16, 2016
84. ## social studies

In 1700"s under the federa system the final authority in is who

asked by Cameron on November 10, 2008
85. ## math

how do you convert miles to feet in the U.S. customary system?

asked by Regina on December 12, 2012
86. ## human resources

describe the characteristics of the ideal appraisal system.

asked by China on November 10, 2008
87. ## CURRENT PROCD TERMN CODING

wHAT IS THE CODING SYSTEM PHYSICIANS USE TO FILE THEIR CLAIMS

asked by SHANA on July 15, 2013
88. ## psych 100

The basic building block of the nervous system is

asked by Anonymous on June 2, 2015
89. ## social studies

How do monopolies threaten the free enterprise system?

asked by anna on October 8, 2008
90. ## algebra 2a solving systems using matrices

write the system of equations represented by the matrix [0 1 2 4] [-2 3 6 9] [1 0 1 3] a: x+2y=4 -2x-3y+69=0 x+y=3 b: x+2y=4 -2-3y+6=9 x+y=3 c: y+2z=4 -2x+3y+6z=9 x+z=3 d: x+2z=4 -2x-3y+6=9 think its A

asked by mia on December 2, 2016
91. ## Bio

I need a conclusion of quail reproductive system. I have got everything else done in my essay. PLease help!!

asked by Co on May 18, 2018
92. ## social studies

how did monopolies hinder the free enterprise system.

asked by brenda on June 13, 2018
93. ## life orientation(l.o)

Please give me an example of your belief system and how it influences your life.

asked by Anonymous on May 18, 2016
94. ## java program

write aprogram that can display the payrol system

asked by guze on November 19, 2016
95. ## biology

What is a possible system that can be used to test respiration in a small animal?

asked by Mitch on June 16, 2011
96. ## easy chemistry

what is the entropy of 10 molecules in a system of 100 boxes?

asked by sarah on December 5, 2012
97. ## 12th grade

If an economy has elements of more than one economic system. it is a ________.

asked by Claudia on April 16, 2009
98. ## Chem

What is the difference between an unsaturated system and an electron deficient one?

asked by Kimora on December 11, 2008
99. ## math

pivot the system about the element in row 2, column 1: -5 5 l -7 10 4 l 4

asked by Leah on March 27, 2011
100. ## hcs 577

4. Why the U.S. health care system is considered complex

asked by keisha on September 13, 2010