# 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

91,330 questions, page 256
1. ## 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.

2. ## 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
3. ## 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.

4. ## Algebra

My book uses the slope y-intercept method for graphing. I am trying to graph the following: y>3/2x-5/2 (sign > is greater then or equal to) The way I understand it I would start on the Y axis at 0 and go down 5 and then to the right 2 for the -5/2. Then I

asked by G on March 13, 2008
5. ## Child Care

A method in which children must see and touch objects in order to learn about them is called A. concrete learning. B. hand-eye coordination. C. active learning. D. self-teaching My answer is A can some check my answer

asked by Brenna on July 23, 2013
6. ## 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
7. ## 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
8. ## 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
9. ## 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
10. ## Calc 2

Use the shell method to find the volume of the solid generated by revolving the region bounded by the line y = x + 2 and the parabola y = x^2 about the following lines: a) The line x=2 b) The line x=-1 c) The x axis d) The line y=26 I know what the

asked by Nathan on October 3, 2016
11. ## 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
12. ## Chemistry

4.12 grams of Zinc are placed in a crucible with 3.00 grams (excess) of Sulfur. when reaction is complete the product mass is 6.10 grams. What mass of Sulfur should be used in the simplest formula calculation? Find the empirical formula of Zinc Sulfide. My

asked by Jakob on September 25, 2016
13. ## science (chemistry)

why does the pH of the acid solution initially increase very slowly when metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds to completion? I thought it may be because the metal is just then being

asked by brittany on April 8, 2015
14. ## Chemistry

Hydroxyapatite, Ca10(PO4)6(OH)2Ca10(PO4)6(OH)2 , has a solubility constant of Ksp = 2.34×10−592.34×10−59 , and dissociates according to Ca10(PO4)6(OH)2(s) --> 10Ca2+(aq) + 6PO4^3-(aq) + 2OH-(aq) Solid hydroxyapatite is dissolved in water to form a

asked by TS on November 3, 2018
15. ## Geometry

What is the surface area of a conical grain storage tank that has a high of 62 meters and a diameter of 24 meters? Round the answer to the nearest square meter. A)2,381m^2 B)2,790m^2 C)2,833m^2*** D)6,571m^2 My answer is C but I think I'm wrong. I lucked

asked by Crystals on May 9, 2017
16. ## 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
17. ## chemistry

My question is found in the analysis section. Thanks to all who can help Lab: Determining Ka of Acetic Acid Purpose: The purpose of this experiment is to determine the molar concentration of a sample of acetic acid and to calculate its Ka. Materials:

asked by Kasen on April 5, 2008
18. ## 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
19. ## 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
20. ## 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
21. ## 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
22. ## 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
23. ## 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
24. ## 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

25. ## 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
26. ## 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
27. ## health

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

asked by vicki on October 23, 2008
28. ## Biology

What are two major flaws in the Phylogenetic Tree System?

asked by Grace on September 20, 2011
29. ## Biology

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

asked by Shane on January 25, 2011
30. ## Early Childhood Development

The basic perceptual system is in place at birth

asked by Anonymous on July 23, 2012

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

asked by Claudia on April 16, 2009
32. ## biology

explain the vascular system in the lilac flower.

asked by MINNIE on December 6, 2014
33. ## introduction to correction

What do you think were the most significant developments to the penitentiary system during the 1800's?

asked by Anonymous on September 10, 2009
34. ## gov.

An economic system must provide the answer(s) to what question(s)?

asked by Anonymous on May 4, 2012
35. ## health

What three processes does food undergo in the digestive system?

asked by m on January 10, 2014
36. ## science

Is the gulf stream an open or closed system?

asked by jason on September 13, 2007
37. ## 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
38. ## Science

What are two examples of a physical system designed by peaple

asked by Sabrina on September 17, 2017
39. ## Math

I need a little help with the metrics system. can anyone help me? like explain how to find the volume or whatever?

asked by Kaitlyn Roberts on March 27, 2019
40. ## Earth Science

Does energy flows through the Earth's system by heat?

asked by Matt on September 28, 2012
41. ## 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
42. ## history

the economic system advocated by margaret thatcher was?

asked by bill on March 21, 2011
43. ## space

does our solar system move in the milky way galaxy?

asked by Isaac on January 27, 2008
44. ## 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
45. ## anatomy

the nervous system is comprised of what 2 Tissue types?

asked by julia on January 24, 2012
46. ## social studies

how can we say that the democracy is the only best system of good governance for a country.

asked by Irfan on February 8, 2013

What two parts of the earth system is a paleontologist involved in? Thanks

asked by drama queen on September 16, 2012
48. ## Bio 11

How is lifestyle related to nervous system development?

asked by Priya on November 17, 2014
49. ## biology

how can i find the circulatory system of a marlin? please help me. i've been looking 4 ages....

50. ## Algebra

How many solutions does the system of equations have? 3x+12y=20 y=-1/4x+5/3 A) one C) infinitely many B) two D) none

asked by Victoria on May 19, 2017
51. ## Science

Communications with planets outside the solar system are most likely achieved using?

asked by Anonymous on February 16, 2009
52. ## law

according to beccaria, the system can reduce the severity of punishment and it can also do what?

asked by craig on September 10, 2009
53. ## 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
54. ## 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

name the planets of the solar system in order from the sun out?

asked by deavon on November 11, 2009
56. ## math

How do you write a learning assessment system assignment

asked by Regina on March 15, 2013
57. ## history

What system of government did Plato recommend in The Republic?

asked by TRACEY on October 1, 2011

What number would come after 03-05-40 in a terminal digit filing system?

asked by Laural on September 9, 2009
59. ## Algebra 1

How many solutions does this system of equations have ?? 2x= 10y + 6 and x+ 5y = 3 does it have infinitey many??

asked by Sierra Elizabeth on January 4, 2016
60. ## Solar system

Why do objects in the solar system spin in the same direction?

asked by Shirley on September 8, 2013
61. ## American Government

The Constitution created a confederate system of government?

asked by Isis on July 26, 2012
62. ## Physics

Consider an inertial reference frame. In this coordinate system

asked by Milan on September 11, 2011
63. ## 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
64. ## Math

What are the steps to doing y = mx + b case for system of linear equations?

asked by Selene on March 26, 2008
65. ## History

Does the federal reserve system affect us directly in any way? How?

asked by Lacy on February 24, 2008
66. ## 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
67. ## easy chemistry

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

asked by sarah on December 5, 2012
68. ## science

What is the total momentum of the system before the parcel is throrn?

asked by Ree on January 25, 2012
69. ## ETHICS IN MANAGEMENT

WRITING A PAPER ON A SYSTEM OF INQUIRY OF A ORGANIZATION

asked by Anonymous on March 17, 2009
70. ## 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
71. ## anatomy

the nervous system is comprised of what two tissue types??

asked by julia on January 25, 2012
72. ## algebra

which matrix represents the system of equations below. -2x-7y=3 7x-6y=12 not sure how to figure this out.

asked by lee on January 2, 2013
73. ## social studies

why do monopolies threaten the fre enterprise system

asked by knj on May 25, 2009
74. ## american history

under America's second party system, the whigs stood for?

asked by Anonymous on April 13, 2014
75. ## ICT

consider an organization as a computer system and identify its components

asked by john on March 21, 2017
76. ## Math

3x-4y=8 5x+3y=23 Based on the above system of 2-equations, which of the following values (x+y) equal? 10, 8, 7, or 5

asked by Jill on July 11, 2017
77. ## Criminal Justice

What is an effective presentation in the Criminal Justice System?

asked by Roberta on May 13, 2011
78. ## Math

So, my teacher wants me to sketch the graph of a system of inequalities but I'm not sure how. Can someone help me? Thank you! 3x + 2y < 6 x > 0 y > 0

asked by Lola on March 12, 2015
79. ## math

What is the system of equations for a feasible region with vertices at (-3,2) (1,3) (6,1) and (2,-2)?

asked by Anonymous on December 30, 2008
80. ## science

compare respitory system of a fish &human

asked by esha on May 21, 2012
81. ## 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
82. ## accounting

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

asked by Debbie on June 11, 2009
83. ## science

asked by ben54 on September 21, 2015

What is the source of the federal court system's authority?

asked by Jaslyn on January 14, 2009
85. ## science

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

asked by benj on September 21, 2015
86. ## SOCIAL STUDIES!!!

in what ways did whitneys system improve products

asked by jordan on November 28, 2011
87. ## math

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

asked by Regina on December 12, 2012
88. ## Physiology

How does nervous system control the activity of writing

asked by Jumoke on April 2, 2013

asked by Rayna on October 27, 2009
90. ## java program

write aprogram that can display the payrol system

asked by guze on November 19, 2016
91. ## hcs 577

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

asked by keisha on September 13, 2010
92. ## hcs 577

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

asked by keisha on September 13, 2010
93. ## MIS

what is the benefits of an information system to the schools ..like highschools? thanks

asked by berry on September 7, 2011
94. ## math - linear equation

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

asked by hy on March 31, 2015
95. ## World History

how were the ancient aryans a civilization even though they did not have a writing system

asked by Alfredo on September 13, 2012
96. ## social studies

What is the treaty port system in East Asia?

asked by Sharon on January 28, 2010
97. ## economics

Can someone explain the monetary system and the fiscal policy

asked by Fatima on March 12, 2009
98. ## Math

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

asked by Me on April 9, 2010
99. ## math/algebra

I need help solving the linear system using substitution of the below problem....Thank You 3x - y=2 y= 2x - 9

asked by JAY10 on March 12, 2009
100. ## Science

Name one feed and feeding system in pig rearing.

asked by Sasha on October 24, 2012