# 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 608
1. ## physics

two forces f1 and f2 are acting at a point such that the angles between them are (1) 30 degree (2) 60 degree and (3) 45 degree show that resultant forces will be

asked by cat on March 23, 2013
2. ## physics

two forces f1 and f2 are acting at a point such that the angles between them are (1) 30 degree (2) 60 degree and (3) 45 degree show that resultant forces will be

asked by cat on March 23, 2013
3. ## History!!! Help me!! Thank you!!

1. Find a line that shows that Mr. Covey did not care that Douglass was too sick to work. (Chapter 10) 2. Find a line that shows that Master Thomas did not believe Douglass’ complaint against Mr. Covey. (Chapter 10) 3. Find a line that shows that Mr.

asked by Bell on March 29, 2012
4. ## Business Econ

I need my answers checked for this question, thanks. A firm's production function: Q = 100 K^0.5 L^0.5 During the last production period, the firm operated efficiently and used input rates of 100 and 25 for labor and capital respectively. (a) What is the

asked by Bernice on March 10, 2007
5. ## world history

can you please check my answers 3.In China in the 1980s, commune-based agriculture was replaced by the _______ responsibility system. A. household B. community C. cultural

asked by mike on November 21, 2011
6. ## Business Law- Ethics

I'm not sure how to go about doing this. I feel like it's an easy question but im thinking to far into it. I want to say that Davis would be the first person to be let off & Carter would be the last person to be let off. I'm not sure what order the rest

asked by Josh on April 28, 2011
7. ## precalculus

Berry is standing at the edge of a hill that slopes downward and to the right. He notices that for every 5 feet you go in a horizontal direction, the hill drops by 2 feet. Berry places a ball at the edge of the hill (the origin of the coordinate system),

asked by Anonymous on June 10, 2013
8. ## physics

A hydraulic cylinder has to overcome a force of 12,600 pounds on the extend stroke and 9,375 pounds on the return stroke. The maximum system pressure available is 2200 PSIG. What is the smallest diameter cylinder required to overcome the load and what is

asked by emma on April 1, 2015
9. ## Math

Admission to a museum cost \$12 for adults and \$7 for children. A group of 35 people attending the museum paid a total of \$315 in admission fee. Write a system of equations to represent the situation. Let A represent the number of adults admissions and C

asked by Terry on March 25, 2014
10. ## Math

A 100 point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response answer questions are worth 8 pints each. Write a system of linear equations that represents this situation, my answer is to

asked by Steven on May 6, 2016
11. ## chemistry

In a bottle of unopened cola, the CO2 dissolved in the liquid is in equilibrium with the CO2 gas above the liquid. The dissolved gas reacts with water molecules in the liquid to from carbonic acid, which also dissociates into carbon dioxide and water.

asked by Angeline on April 23, 2013
12. ## physics

The system in the Figure is in equilibrium. A mass M1 = 221.0 kg hangs from the end of a uniform strut which is held at an angle theta = 42.0o with respect to the horizontal. The cable supporting the strut is at angle alpha = 31.0o with respect to the

asked by anonymus on September 9, 2018
13. ## math

what is 10^3 ( )9^2 ( )190 = 10. i try to work it out;( 1000 - 190 ) divided by 190 = 10 But when i think about BODMAS then i do not know how to choose the correct operation to make this statment true,can u help me please ,thanks

asked by rica on April 18, 2013
14. ## physics

A certain refrigerator is rated as being 39% as efficient as a Carnot refrigerator. To remove 102 J of heat from the interior at 0 °C and eject it to the outside at 23 °C, how much work must the refrigerator motor do?

asked by zuhra on April 19, 2012
15. ## Science

What are the theoretical molar ratio values for Ag:Cu and Ag:AgNO3? Compare these values to the values you got in your experiment and compute a percent error for your work.

asked by Christine on May 27, 2011
16. ## algebra

when the difference of a positive number and two is multiplied by the sum of the number and 9 and the result is 7 find the number i just need help setting this up i can do the work myself heres what i did: 9(x-2)=7 but im sure im wrong.

asked by desiree on February 12, 2017
17. ## math

in which set would 2/5, 15/36, and 24,12 be placed and why set A = 1/4, 7/25, 5/8, 3 3/5 set B = 2/3, 4/7, 11/12, 1/9, 34/18 Please note that we don't do students' homework for them. Once you have come up with a response to these questions, please re-post

asked by bill on January 26, 2007
18. ## Physics

A 190 kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.160 m/s. How much work must be done on the hoop to stop it?

asked by Addie on April 18, 2012
19. ## 7th grade

this is from homework work book . write each fraction or mixed numberas a decimal. use bar notation if the decimal is a repeating decimal

asked by naida on September 13, 2010
20. ## chem 1

A gas-forming reaction produces 1.35 m3 of gas against a constant pressure of 143.0 kPa. Calculate the work done by the gas in joules.

asked by christie on May 2, 2013
21. ## physics

A certain refrigerator is rated as being 39% as efficient as a Carnot refrigerator. To remove 102 J of heat from the interior at 0 °C and eject it to the outside at 23 °C, how much work must the refrigerator motor do?

asked by zuhra on April 20, 2012
22. ## physics

A force 457 Newtons causes a displacement 6.2 metres which is at an angle of 8 degrees to the direction of the force vector. Calculate the work done by the force.

asked by jake on May 26, 2014
23. ## hist

I am studying Tecumseh, one of the Shawnee brothers, and had a few questions. What were the two things that Tecumseh did that did not turn out well? (according to Jarrett) What was Tecumseh’s favorite work by Shakespeare? thanks!

asked by emmy on October 9, 2006
24. ## statistics

suppse you received a shipment of nine televisions. four of the television are defective. If two televisions are random;y selected compute the probability at least on of the two televisions does not work

asked by patty on June 2, 2013
25. ## physics'

A 100 kg hoop rolls along a horizontal floor so that the hoop's center of mass has a speed of 0.230 m/s. How much work must be done on the hoop to stop it?

asked by Joey on January 5, 2011
26. ## Us after 1877

Why would the Knights of Labor oppose child labor beyond the obvious reason that children should not be forced to work? What about their opposition to convict labor?

asked by Lacy on March 8, 2010
27. ## Physics

An ideal spring has the spring constant k = 414 N/m. Calculate the distance this spring must be stretched from its equilibrium position for 22 J of work to be done in meters.

asked by James on May 27, 2012
28. ## chemistry

If a particular reaction absorbs 252 kJ of heat while doing 105 kJ of work at constant pressure. What are the ΔE and ΔH for values for the reaction? Is the reaction endothermic or exothermic?

asked by Mai on April 12, 2014
29. ## physics

Doing work on a gas always implies Answer a. adding internal energy. b. adding heat. c. changing the volume. d. adding potential.

asked by jim on October 15, 2010
30. ## English

1.It was built entirely by hand. 2.Several Chinese states began to build walls for protection. 3.The Ming government began rebuilding the crumbling ruins in the fifteenth century, and much of their work remains today. 4.The wall is as high as thirty-five

asked by Hayley on November 29, 2010
31. ## Math

A theater has a seating capacity of 900 and charges 4\$ for children, 6\$ for students, and 8\$ for adults. At a certain screening with full attendance, there were half as many adults as children and students combined. The receipts totaled 5600\$. How many

asked by Anonymous on November 26, 2018
32. ## Math

The medical records of infants delivered at Kaiser Memorial Hospital show that the infants' lengths at birth (in inches) are normally distributed with a mean of 22 and a standard deviation of 2.1. Find the probability that an infant selected at random from

asked by Ashley on October 27, 2014
33. ## statistics

show me Police academy acceptance exams to qualify for a police academy, applicants are given a test of physical fitness. the scores are norally distributed with a mean of 64 and standard deviation of 9. if only the top 20% of the applicants are selected

asked by Anonymous on October 15, 2014
34. ## PLZ HELP SOCIAL STUDIES

What was one reason Louis XIV supported the arts? A. He wanted to show his own importance. B. He believed in helping artists be successful. C. He wanted French art to be recognized as superior by Spain. D. He thought that French art needed improvement.

asked by name:unknown on October 30, 2018
35. ## Science

Choose all of the chemical reactions which correctly show that chemical reactions must obey the Law of Conservation of Matter. a. CH4 + 2O2 → CO2 + H2O b. H2 + O2 → H2O *** c. C6H12O6 + 6O2 → 6CO2 + 6H2O d. 2CO + O2 → 2CO2 *** e. 4P + O2 P4O10

asked by Anonymous on February 27, 2018
36. ## math

1)on the 7th grade honor review exam, student were asked to create a power with a base of 3 that is greater than 9 but less then 3 to the 5th power . two powers that student created show below. Describe why each of the solutions is incorrect 5 to the 3rd

asked by rian on November 21, 2013
37. ## Maths

Given that arg((z-1)/(z-2i)) = pi/4 describe the locus of P and sketch this on an argand diagram. Show that the point (1,3) lies on this locus. I know it is an arc subtended from the points (0,2) and (1,0) but I do not know how to find the centre of the

asked by Jake on February 5, 2007
38. ## math

At a halftime show marching band in formation. the lead drummer started at a point with coordinates (-2, -5) and moved 3 steps up and 1 step right. A. Write a rule to describe the translation. B. What are the corrdiates of the drummer's final position? A.

asked by FluttershyK on August 31, 2016
39. ## math

An object dropped from restfrom the top of a tall building falls y=16t^2 feet in the first t seconds. Find the speed of the object at t=3 seconds and confirmalgebraically. The answer is 96 feet/sec but how do i figure it out? cans omeone show me steps?

asked by cara on September 2, 2009
40. ## Dynamics

A particle of mass m starts from rest and slides on a polished track around a vertical circular loop of radius a as shown. Show that the minimum starting height h above the bottom of the loop in order that the particle will leave the track at any point is

asked by lexis on April 20, 2014
41. ## math

Mr john spends 1/4 of his monthly salary on the repayment of a housing loan.of the remainder he spends 1/5 on food and the pub bill,and puts aside 1/10 for transport costs .this leaves him with \$630 a month.what is his monthly salary?plz show the steps

asked by frodo on June 20, 2013
42. ## statistics

Sat scores l around the nation tend to have a mean score around 500, a standard deviation of about 100 points and are approximately normal distributions. a person who scores 600 on the sat 1 has approximately what percentile rank within the population?

asked by please help in panic mode-mary on October 15, 2010
43. ## algebra

What is the equation for the line of best fit that matches the data shown in the table and in the graph? x y -7 9 -3 6 -1 3 2 1 6 -1 A. y = 0.79x - 3.12 B. y = -0.79x + 3.12 C. y = 3.12x - 0.79 D. y = -3.12x + 0.79 i can't show the graph here but it's

asked by ezra on November 13, 2013
44. ## Maths

Given that arg((z-1)/(z-2i)) = pi/4 describe the locus of P and sketch this on an argand diagram. Show that the point (1,3) lies on this locus. I know it is an arc subtended from the points (0,2) and (1,0) but I do not know how to find the centre of the

asked by Jake on February 4, 2007
45. ## Math - Exponential

Tests of an artifact discovered at the Debert site in Nova Scotia show that 28% of the original C14 is still present. Approximately how old is the artifact? 28% = 7/25 (7/25)P = Pe^(-5730k) (ln(7/25))/(-5730) = k 2.22 x 10^-4 = k (7/25)P = Pe^(-kt)

asked by Anonymous on January 24, 2009
46. ## life orientation

Identify and describe 3 environmental health that cause ill health, crises and or disaster within your community or any any other community within south africa and globally. Include evidence that is current of the identified issues. Use graphs, statistics

asked by surprise on April 20, 2013
47. ## maths

1 at what time betweeen 7o'clock and 8o'clock will the hands of a watch be at right angles (for the first time) 2 the floor of a room is in the form of a rectangle 'x'cm long and 'y'cm broad but with one corner rounded off by a quadrant of a circle of

asked by raffin on May 21, 2012
48. ## science

Describe a fourth scenario in which either the Law of Conservation of Matter or the Law of Conservation of Energy could be observed. Using as many sentences as needed, describe how an experiment could be set up to further explore your recorded observation.

asked by LISA on September 8, 2014
49. ## math

Please show steps and give me explanations! Thank you. 1. If x=1/2, what is the value of 1/x+1/x-1 ? The answer is 0. 2. The sequence ZWYX may be changed in either two ways. Either two adjacent letters may be interchanged or the entire sequence may be

asked by Clara on July 26, 2012
50. ## Chemistry

Use the information below to answer this question C(s) + O2(g) -> CO2(g) ΔH = -394 kJ/mol H2(g) + 1/2 O2(g) -> H2O(l) ΔH = -286 kJ/mol 4C(s) + 5H2(g) -> C4H10 (g) ΔH = -126 kJ/mol The standard enthalpy of combustion of butane, in kJ/mol, is: A -2880 B

asked by Autumn on October 24, 2017
51. ## Maths Help

(1) Prove that the cancellation law of multiplication is equivalent in a commutative ring to the assertion that the product of non-zero factors is not zero. (2) For any given Integral Domain, state the law of Trichotomy, and show that in an integral Domain

asked by John on January 4, 2010
52. ## math

Your friend is thinking about buying shares of stock in a company. You have been tracking the closing prices of the stock shares for the past 90 trading days. Which type of graph for the data, histogram, Pareto or time-series, would be the best to show

asked by kevonna on June 22, 2011
53. ## math

Mr john spends 1/4 of his monthly salary on the repayment of a housing loan.of the remainder he spends 1/5 on food and the pub bill,and puts aside 1/10 for transport costs .this leaves him with \$630 a month.what is his monthly salary?plz show the steps

asked by frodo on June 20, 2013
54. ## literature

I read Soldier Home by Ernest Hemingway and found two reasons to prove that it is important from 1865 to present time and they world war views and also show soldier's life after war. I need one more reason to support and will anyone tell what points are

asked by iqra on April 4, 2011
55. ## Social Studies

What was one reason Louis XIV supported the arts? A. He wanted to show his own importance. B. ***** He believed in helping artists be successful. C. He wanted French art to be recognized as superior by Spain. D. He thought that French art needed

asked by connxus kid on November 7, 2018
56. ## Maths

Given that arg((z-1)/(z-2i)) = pi/4 describe the locus of P and sketch this on an argand diagram. Show that the point (1,3) lies on this locus. I know it is an arc subtended from the points (0,2) and (1,0) but I do not know how to find the centre of the

asked by Jake on February 4, 2007
57. ## civics

statistics show that internet usage in the United states has grown from just 41 percent of households in 2000 to 77 present household in 2012. Which best describes how the internet has contributed to cultural diffusion in the United states? I'm stuck I

asked by Help!!! Mrs sue on June 10, 2014
58. ## Math Analysis

4. Find f(x) + g(x) when f(x) = x^(1/2) and g(x) = 6x^(1/2). ===> I got the square root of 7x. Is this right? 16. Find f(x)/g(x) when f(x) = (2x)^(1/2) and g(x) = 2*(sqrt2)*x^(1/3). ===> I got (sqrt2x) / (3*cubertx), but I definitely don't think this is

asked by Emily on October 12, 2009
59. ## Chem

I don't believe I'm getting the correct answers for this problem. Could someone look over my work and verify whether it is correct or not? One mole of an ideal gas (Cv = 3/2R) at 300. K expands adiabatically against a constant external pressure of 2.00 atm

asked by Chris on March 6, 2007
60. ## Civics

A state has passed a law making it illegal for people to protest at the state capital building. You think this law is unconstitutional, but your state court system upholds it. What federal branch has the final say on whether your state law is

asked by jeje on January 19, 2015
61. ## Physics

Two particles approach each other with equal and opposite speed v. The mass of one particle is m, and the mass of the other particle is nm, where n is just a unitless number. Snapshots of the system before, during, and after the elastic collision are shown

asked by Stephanie on November 1, 2015
62. ## Physics

A 104 N car is lifted by a manually operated hydraulic lift. The area of the shaft of the lift is 80 cm2; the area of the piston that forces liquid into the system is 2 cm2. What minimum force must be exerted on this piston to lift the car? a. 104 N b. 125

asked by James Arnold on January 18, 2013
63. ## Physics

Two blocks of masses 11 kg and 8.0 kg are connected together by a light red string and rest on a frictionless level surface. Attached to the 8-kg mass is a light blue string, which a person uses to pull both blocks horizontally. If the two-block system

asked by Jessica on October 3, 2016
64. ## Physics

Consider the figure above consisting of three particles of mass m attached to a massless rod. Given an axis of rotation through point P, the rod rotates as shown in the figure. If the rod is released from rest in the horizontal position at t = 0. What is

asked by Anonymous on August 1, 2015
65. ## probability

An installation technician for a specialized communication system is dispatched to a city only when three or more orders have been placed. Suppose that orders follow a Poisson distribution with a mean of 0.25 per week for a city with a population of

asked by poisson on September 12, 2015
66. ## AG

1. The framers included the supremacy clause in the constitution for the purpose of a. giving the federal government complete authority over all actions of state governments. ******* b. making the individual stte governments more powerful thank the federal

asked by carmen !! on October 11, 2016
67. ## 8th grade Math

Megan has at most \$1500 to invest. She plans to invest some of the money in a long-term CD at 6% and some of it in a short-term CD at 3%. She wants to earn at least \$75 in interest per year. Write a system of inequlites to represent the situation, and use

asked by Carleigh on January 25, 2009
68. ## Elem. Ed.

Portfolios are a collaborative effort in that: A. children,teachers,and specialists can all choose samples to include in a portfolio. B. each item in the porfolio should be discussed with parents before it is included. C. teachers must have input from

asked by Keisha on April 10, 2007
69. ## Physics

Block A of mass 115 kg rests on a table with which it has a coefficient of limiting friction of 0.37. A light cord passes horizontally from Block A, without slipping, over a pullet of mass 34kg, radius 120 mm and radius of gyration 84mm, and down

asked by Alex on August 19, 2012
70. ## physics help please

The two blocks are connected by a light string that passes over a frictionless pulley with a negligible mass. The 3 kg block lies on a rough horizontal surface with a constant coefficient of kinetic friction 0:3. The hanging block has a mass of 8 kg. The

asked by kitt on March 1, 2007
71. ## math

I need help. I have information on the metric system. I have to list things at home and grocery store that display metric units. I don't know if I quite understand. I am trying to understand the reason behind my answer. The metric units and measurements

asked by shay on October 20, 2008
72. ## home economics - PLS help

Need help with some economics problems and wondering if anyone can help. 1- ) Consider a farmer who has access to a bond market where she can borrow or lend at the interest rate R. Assume also that her money holdings (nominal balances) and the price level

asked by MW on September 28, 2011
73. ## Maths

Q1.Write the names of the two methods you use to find the HCF and LCM. Q2.Write formula to show the relation between HCF and LCM.

asked by Pooja kumari on June 21, 2014
74. ## Statistics

From five faculty members and four students, a committee of four is to be chosen that includes two students and two faculty members. In how many ways can this be done? Please show more than one approach.

asked by tamar on November 17, 2017
75. ## analytical geometry

two edges PQ,RS of a tetrahedron PQRS are perpendicular,show that the distance between the mid-points of PS and QR is equal to the distance between the mid points of PR and QS

asked by manjula on January 16, 2013
76. ## CHEMISTRY

At what temperature does a 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0-L tank? Plz show me step by step how to do this, with using pressure as atm.

asked by ~anonymous on May 10, 2010
77. ## chemistry

When I am writing a half-reaction with a corroding metal that is in deionized water, what can i assume there to be in the water that can show up in a half-reaction?

asked by Randy on November 11, 2010
78. ## math

Show how to make one addend the next ten number. complete the new addition sentence. 6) 18+3=___ ___+___=___ 7) 27+24=___ ___+___=___

asked by mathhheee on November 26, 2014
79. ## Calculus

Could someone please help me with this question; Find the tangent to the curve y=x^2-8x+14 which slope is -2. Show that this tangent touches the curve y= -x^2-4x+4. Find the point of contact. Thank you.

asked by Kenny on February 22, 2010
80. ## analytical geometry

two edges PQ,RS of a tetrahedron PQRS are perpendicular,show that the distance between the mid-points of PS and QR is equal to the distance between the mid points of PR and QS

asked by manjula on January 15, 2013
81. ## chemistry

When I am writing a half-reaction with a corroding metal that is in Deaerated water, what can i assume there to be in the water that can show up in a half-reaction?

asked by Randy on November 11, 2010
82. ## Maths

A cubic graph has the equation: y = 3(x-1)(x+2)(x+5) Write in similar form the equation of the graph after a translation ( 3) Could you show me step-by step please?

asked by Remy on October 1, 2009
83. ## Physics (Feilds)

Show that the gravitational potential at the surface of the Earth is -64 MJ kg-1, given the surface gravitational feild strength is 9.8 N kg-1 and the mean radius of the Earth is 6400 km.

asked by Sarah on January 19, 2016
84. ## Physics

In using a slide wire potentiometer, show a proof for the equation Vx = Cx where V = the voltage drop, and C = the position along the slide wire potentiometer.

asked by Matt on April 26, 2010
85. ## Trig

How do I write cos(11x)cos(x)+sin(11x)sin(x) as a single trigonometric function? Please show steps.

asked by Anonymous on April 3, 2016
86. ## English

3.Neither these globes nor this map ____ my street (show shows) Is globes plural and map singular? So the answer would be shows?

asked by Jerald on March 7, 2013
87. ## Maths

1. Two edges PQ, RS of a tetrahedron PQRS are perpendicular; show that the distance between the mid-points of PS and QR is equal to the distance between the mid-points of PR and QS.

asked by veeraprathap on January 10, 2015
88. ## English

I went to parent-teacher conferences, and it was not what I expected. I have learned that at parent-teacher conferences not all the parents show up. Are those sentences correct?

asked by Pete on April 2, 2011
89. ## Anatomy

The negative feedback system is based on a low level of hormone A. preventing the kidneys from excreting the hormone. B. causing another gland to secrete a similar hormone. C. causing the gland to decrease secretion of the hormone. D. causing the gland to

asked by Anonymous on November 4, 2017
90. ## Math

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 YRN DJ on November 18, 2015
91. ## Algebra help

Okay, I think I have arrived at all the answer to the questions thrown my way. However, how do I explain what is happening “graphically”, where the services are charging same rate? : Your company must use a transportation service to shuttle their

asked by H on December 17, 2009
92. ## Computer Harware

You have a single hard drive on your computer that contains two NTFS partitions. Your computer's operating system alerts you that the C partition is running out of room. Your E partition still has 75 gig of free space. What is the least intrusive way to

asked by Beth on January 19, 2013
93. ## Physics-coefficient of friction

What's the minimum coefficient of friction between the ladder (of length d) and the ground will keep it from slipping? (consider the wall frictionless) (θ=56.5 degrees) I think the formula is supposed to be mg L/2 sin y, but it does not provide a length,

asked by Chris on November 11, 2014
94. ## Alg-Substitution (check plz)

k well i had to use substitution to find the point of intersection for these 2 equations x-y=10 3x+y=11 i chose to substitute y in the first equation my final answer was (-1/2 , 5) can someone clarify this, and if it's wrong, where'd i make a mistake? In

asked by thomas on February 22, 2007
95. ## maths

I don't know how to solve this question.urgent A one side open cylindrical drum has inner radius 28cm.and height 2.1m.How much water you can store in the drum.Express in litres.(1 litre=1000cc.)

asked by devi on March 21, 2015
96. ## Algebra

Solve x^2-10x+22=0 by using the quadratic formula. After I substituted in the values for A, B, and C, and broke it down I got 10 plus or minus 2 times the square root of three/2. How do you break this down further? I know ten can be divided by 2 to get

asked by Corinna on October 10, 2009
97. ## Chemistry

Calculate the maximum wavelength of light capable of removing an electron for a hydrogen atom from the energy state of n=4 if it requires an energy of at least 1.36 x10^-19 J to do this. I just want to know how to find the second n value so i can solve

asked by Maxx on February 22, 2016
98. ## algebra

A small painting has an area of 400 c m 2 . The length is 4 more than 2 times the width. Find the dimensions of the painting. Solve by completing the square. Round answers to the nearest tenth of a centimeter.

asked by Bobby on May 20, 2014
99. ## Counting and Probability

In how many ways can the 10 kids in my class be seated in a circle if John and Sam insist on being seated diametrically opposite each other? (As usual, two seatings which are rotations of each other are considered the same.) I cannot solve this problem!

asked by Mr. Alexander on October 29, 2015
100. ## Algebra

A small painting has an area of 400 cm^2. The length is 4 more than 2 times the width. Find the dimensions of the painting. Solve by completing the square. Round answers to the nearest tenth of a centimeter.

asked by Anonymous on April 9, 2013