# 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 527
1. ## sir steve reiny plz maths

Suppose you have 5 real numbers whose sum of squares is equal to 5. What is the maximum value of the sum of cubes of these 5 numbers? Please show step

asked by danu on May 6, 2017
2. ## Math

(10 Squar root -13)(-5 square root -5) put in standard form a+bi I really don't understand square roots so can you show me how to do these please

asked by sarah on March 2, 2009
3. ## Religion

Hi. How does faith, charity and hope show leadership and service. I know the definitions to these words but i don't get how they connect to leadership and service. Please help

asked by Ted on January 28, 2013
4. ## physics

A bike of wheel radius. 40 cm at its highest speed its meter show 300RPM.then evalute the speed of the bike on this reading

asked by Rajesh on May 17, 2014
5. ## English 102

IS this a good research question? What stage of childhood development does research show how experiences affect brain development and why?

asked by De on February 28, 2015
6. ## math

is there a common multipple for 116, and 145? Can 116/145 be reduced or simplified? I have been agonizing for an hour over this. Please show me the answer.

asked by barb on July 29, 2010

How can you use the measures of the interior angles of regular polygons to show that a platonic solid cannot be made from regular polygons that have more than five sides?

asked by Al on June 2, 2009
8. ## Math

A binary operation * on the set of real numbers is defined by a*b= a+b-ab for a,b, c is belongs to R. i) show that the operation is associative. That is, (a*b)*c=a*(b*c) for all a,b,c belongs to R. ii) Find the value of -5*8 and also the value of

asked by Ilukui on May 2, 2016
9. ## physics

in low temperature physics,at joule thomson effect hydrogen does not show cooling effect at room temperature why?

asked by karthika on February 23, 2010
10. ## Chemistry

Calculate the pH of a 25 mL sample of distilled water after the addition of 1 mL, 2 mL, 3 mL, 4 mL, and 5 mL of NaOH and HCL. (0.1 M HCl and NaOH) In total, you need to show 10 calculations.

asked by Mariah on March 14, 2011
11. ## Integrated Science

cabbage leaves___caterpillar___kisskadee___hawk 1.)what do the arrows in this food chain show? 2.)give the reason why a food chain must begin with a plant. Thanks for all your help.

asked by Kavita on November 22, 2008
12. ## life orientation

discuss two examples from the media to show how the media support a democratic society.explain how society has benefit from this articles

asked by Phindy Pwoww on May 29, 2015
13. ## math

how to graph this y=6x+20 Graph the y-intercept. Show the lines that indicate the use of slope to graph two more points Draw the line representing the graph of the equation

14. ## Geometry

The lengths of the sides of a triangle are 3x, 5x – 12, and x + 20. Find the value of x so that the triangle is isosceles. Can somebody show me a step-by-step process of how to get the answer(s) please? I need it:) I also saw that x could = 8, 10, and 6.

asked by SkatingDJ on December 8, 2015
15. ## Infertility

Where can I find a list of Canadian statistics, such as graphs and/or tables that show the most recent Canadian statistics about infertility drugs? Thanks so much!

asked by Montana on May 3, 2008
16. ## math

You want to buy three books that are on sale at 20% off. The original prices of the books are \$2.50, \$4.95, and \$6.00. How much will you save? Calculation Without Distribution (Show all steps.) Please help!!! i know how to do it with distribution, but i am

asked by i am dog on November 20, 2017
17. ## Math

This is for my daughter who was given summer homework and I don't know how to help her please. the difference between two mixed numbers is 3 1/4 .what might the two mixed numbers be?show as Manny solutions as you can. Thank you .

asked by Guna on August 2, 2016
18. ## Chemistry

If I count out Avogadro's number if CO2 molecules how much will my piles of molecules weigh? Can someone show me how to get the answer. I know the answer is 44g

asked by Sarah on September 4, 2014
19. ## math

I dontunderstand this question can you please help me. "Explain why 3 separate lines can all be parallel to each other,but 3 separate lines cannot all be perpendicular to each other. Use a drawing to show your answer."

20. ## Geomerty

Find a Counterexample to show that the conjecture is false. Conjecture: Any number that is divisible by 6 is also divisible by 12. A. 36 B. 30 C. 48 D. 60 Im thinking that the answer is B. 30, but i was just making sure.

asked by Court on April 12, 2010
21. ## astronomy

Can CMB show that the universe was accelerating at the time the CMB formed thus measuring dark energy early in the universe?

asked by Bella on October 7, 2013
22. ## algebra

Find the least common multiple of the monomials. 5a squared, and 16a cubed. Also 17b squared and 3b cubed. Could you show me how to do these. Thank you, Sandy

asked by Logan on October 10, 2012
23. ## Algebra

Please show me step by step on solving this problem? log₅(2x-9)+ log₅(x+2)= 1 Thank you I'm getting 2x²-5x-28=0 which is a empty set. Trying to make sure I'm correct if I am. Thanks so much for your help

asked by sandy on December 1, 2012
24. ## physics

A stone is projected vertically upwards with velocity 40m/show that the stone will reach the point of projection with the same velocity

asked by samod on September 21, 2015
25. ## Function plz help!!!

If a function u(x,y)=arctan(y/x) deduce the laplace equation of the function. plz show working i don't no where to start from...plz thanks

asked by Collins on December 12, 2015
26. ## algebra2

Can you explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. Can there be more than one way to factor a problem like this? can you please show it in written word and step by step?

asked by kay on February 27, 2012
27. ## Geography

If the town A (longitude 75 W) is 5.00pm on Friday, what will be the time and day at town B(longitude 120 E) show your workings correctly.

asked by Miriam on January 16, 2019
28. ## math

Let f and g be the functions defined by f : R^2 −→ R^2 (x, y) 􏰀−→ (−y, −x) and g : R^2 −→ R^2 (x, y) 􏰀−→ (x + 1, y − 1). (a) Describe the geometric effect of each of f and g (b) Determine the composite function g◦f. (c) Show

asked by s17 on October 29, 2018
29. ## cal

Sketch the graph and show all local extrema and inflection points. f(x)= 1/x^2-2x-8 I believe the ans is "Relative max: [1,-1/9]" and No inflection points".

asked by mat on November 21, 2013
30. ## astronomy

Can CMB show that the universe was accelerating at the time the CMB formed thus measuring dark energy early in the universe?

asked by Bella on October 7, 2013
31. ## Social Studies (Ms. Sue)

Why did visitors see at world's fairs? My answer: Visitors saw newly inventions and such, as the fairs were designed to show off American technology.

asked by Anonymous on May 26, 2013
32. ## aig math

the sum of 2 numbers is 77. one number is 2 1/2 times as big as the other number.find the difference between the 2 addends.please show how you got your answer. my answer is 72.6, am i right if not please tell me why and how.

asked by lidia on August 18, 2012
33. ## geometry

a point moves so that its distance from the origin is twice its distance from the point (3,0) show that the locus is a circle and find its centre and radius

asked by tundr on January 18, 2017
34. ## physics

a projectile thrown at an angle Ө with the horizontal has horizontal range R and maximum height h. show that the tangent of the angle of projection is given by 4h/R

asked by swapnita paras on October 4, 2014

Show the number of partitions of n in which only odd parts may be repeated equals the number of partitions of n in which no part appears more than three times

asked by Anonymous on October 16, 2014
36. ## Physics

Please show each step: Consider a mixture of 100 grams of water at 25 ° C with 75 grams of water at 40 ° C. Calculate the final temperature of the sample.

asked by Sonder on February 7, 2018
37. ## maths

The length of a Tennis court is 12.8 m more than its width w. What are the dimensions of the Tennis court. Show the formulation of how you arrived at the quadratic expression.

asked by naafd on November 28, 2014
38. ## Calculus

Consider the function h(x)=e^x. Determine the equation for the tangent line at x = 1. All values must be exact (no decimal values). can someone show me how you'd get to y=ex step by step??

asked by Anonymous on November 21, 2018
39. ## ALGEBRA

Find an equation in slope-intercept form passing through the points (2,5) and (7,-3). M=(-3,-5)/(7,-2) M=-8/5 IS THE SLOPE [Y=MX+B] 5=-8/5*2+B 5=-16/5+B 5+16/5=B (25+16)/5=B 41/5=B THE Y INTERCEPT Y=-8X/5 +41/5 HOW WOULD I SHOW A GRAPH ON THIS PROBLEM?

asked by bianca on February 26, 2011
40. ## ap physics

hi i am not sure how to do this...thank you a man is going to pitch a ball. he moves the ball in a circular path of radius 0.6 m, constantly applying a force of 30N to the ball in the same direction as the ball's velocity along the circular path. at the

asked by Appreciative student on November 7, 2010
41. ## Art

1. A marble sculpture has been repaired and is ready for display. Which two special tests might work together to write a written information tags for the display? A. Conservator and archaeologists A marble sculpture has been repaired and is ready for

asked by Grace on February 12, 2019
42. ## E

(1) Many people wonder why schools should bother teaching students about music. (2) The answer to that is clear. (3) Music education is as useful outside the classroom as it is inside the classroom. (4) Students who study music are often more successful in

asked by Anonymous on April 11, 2018
43. ## chemistry

How do you compare and contrast a chemical equation and an ionic equation? Is a chemical equation any equation while an ionic equation deals with the gain/loss of electrons? A chemical equation usually consists of what I call a molecular equation whereas

asked by Carter on December 15, 2006

One method for measuring the speed of sound uses standing waves. A cylindrical tube is open at both ends, and one end admits sound from a tuning fork. A movable plunger is inserted into the other end at a distance L from the end of the tube where the

asked by chelsea on May 1, 2012
45. ## physics

One method for measuring the speed of sound uses standing waves. A cylindrical tube is open at both ends, and one end admits sound from a tuning fork. A movable plunger is inserted into the other end at a distance L from the end of the tube where the

asked by cole on February 13, 2018
46. ## Calculus

For y=(1/4)x^4-(2/3)x^3+(1/2)x^2-3, 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 --- I thought it'd be better to find extreme values

asked by Anonymous on June 1, 2010
47. ## World History

How did pachacuti the sapi inca dominate an immense empire from his small kingdom in cuzco? A. His army had better weapons and received intense training B. People in the region thought he was the embodiment of the god zeus C. After he had subdued

asked by sarah on January 9, 2012

A light spring of constant k = 170 N/m rests vertically on the bottom of a large beaker of water. A 5.70 kg block of wood (density = 650 kg/m3) is connected to the spring and the mass-spring system is allowed to come to static equilibrium. What is the

asked by julie on December 20, 2010
49. ## english

Please check grammar correctint comma splice sentences and need to use more the 1 method. Original sentence: Unfortunately Anthony did not live to see the 1920 passage of the Nineteenth Amendment giving women the right to vote,she died in 1906. My

asked by Amor on April 29, 2011
50. ## can someone edit my essay? thanks!

Gorbachev did not think about all the consequences that would happened if he changed Russia into perestroika. He underestimated the effect that perestroika would have on Russia. Yes, his political initiatives were great for freedom and democracy but all

asked by henrey on April 25, 2007
51. ## Science

How are the respiratory and circulatory and respiratory systems similar? A) Both systems provide glucose and other substances to cells. B) Both systems regulate blood flow throughout the body. C) Both systems help remove carbon dioxide from the body. D)

asked by Julie on March 30, 2018
52. ## English-Ms. Sue

Ms. Sue, you know the paragraph I did yesterday right, well I just want to change the the starting/introduction. I want to make it sound more interesting. I don't know if what I wrote makes sense(in the beginning) Could you show me another way to put it

asked by Sara on February 10, 2010
53. ## Physics - Torque

A particle is acted on by two torques about the origin: T1 has a magnitude of 4.3 N*m and is directed in the positive direction of the x axis, and T2 has a magnitude of 3.2 N*m and is directed in the negative direction of the y axis. What are the magnitude

asked by COFFEE on March 31, 2007

Mahalyk's Water Fun Shoppe specializes in jet skis. Mahalyk's inventory records showed the following for the past year. Purchase Date Number of Jet Skis Cost Per Jet Ski February 10 30 \$4,000 May 12 80 \$3,000 June 15 20 \$3,500 July 20 15 \$2,500 Use the

asked by Anna on February 13, 2013
55. ## Science - 7th grade

Can you check the following: 1. Draw a Punnett Square to show a dog breeder inbreeding to maintain a purebred line of golden retrievers. Ans: would the parental cross look like Gg x GG or GG x GG? 2. Draw a Punnett Square to show a farmer crossing a plant

asked by Alexis on February 15, 2015
56. ## Accounting

Hi, I am having trouble figuring out the below question. Can someone please provide some guidance. Thanks! _____________________________________ It’s December 31, 2007 and you are about to close the firm’s books for the year. Just as you think

asked by Leslie on February 23, 2009
57. ## Theories and issues in working with school-age chi

Voters have been historically unwilling to underwrite a school-age child care system because A. recently immigrated families had more extended support and could take care of their children themselves. B. they believed that child care was the responsibility

asked by Amanda on October 24, 2014
58. ## Physics Energy and Work Done

A 390-N child is in a swing that is attached to a pair of ropes 1.9 m long. Find the gravitational potential energy (in JOULES) of the child–Earth system relative to the child's lowest position at the following times. A) when the ropes are horizontal B)

asked by Mofied on November 1, 2011
59. ## chemistry

true or false Entropy always tend to favor mixing Mixing result in positive change in entropy Entropy allows endothermic processes to be spontaneous Pure liquids don't have entropy Addition of salt to water increases entropy Entropy is the measure of

asked by Jazz on May 6, 2015
60. ## biology

Genetic problem Schilder's disease, which causes a progressive degeneration of the nervous system leading to death at about two years of age, behaves as a simple autosomal recessive trait. If a couple loses their first two children due to Schilder's

asked by deb on March 15, 2008
61. ## HR management

Susan Moore is the number manager in charge of a 25-bed medical unit at St. Eligius Hospital. She is currently preparing the nurse staffing plan for the next fiscal year. Hospital management has provided all nurse managers with a list of assumptions for

asked by Anonymous on September 21, 2014
62. ## CHEMISTRY

Mass (before reaction): test tube + HCl(aq) + stir bar + capsule 26.600 g Mass (after reaction): test tube + HCl(aq) + stir bar + capsule 25.300 g Volume of water displaced from the squirt bottle 148 mL Temperature of the CO2(g) 287.4 K Pressure (atm)

asked by Karina on October 22, 2012
63. ## Math 120

Suppose there is a pile of quaters, dimes, an pennies with a total is \$1.06, How much of each coin can be present without being able to change for a dollar? If there are multiple selection of coins that will work

asked by Enis on February 10, 2013
64. ## writing

I have to write a narrative essay about a time when i had to do something that went against my beliefs or convictions. I thought about it for like an hour, but I can't figure out a decent example. Can anyone tell me an example so I can understant what kind

asked by Andrew on September 17, 2008
65. ## Karen Myer

Which cells identify as the ones most likely to hold the key to increased human longevity and vitality and how might this work? Describe one alternative to cloning that the authors mention

asked by Science on January 13, 2015
66. ## Physics

calculate the work done by a bricklayer who lifted cement block of mass 10kg from the floor to a height of of 2.5m (acceleration due to gravity is 9.8ms²)?

asked by Rebecca. on May 29, 2019
67. ## Physics

A bullet of mass 200 grams is forced with work speed of 400 m/s of it is stopped in 100 m, Find: a.) KE b.) Force needed to stop it

asked by Chantal on April 27, 2016
68. ## pyscology

'when Mary is late coming home from work,john decides that it is because she lost interst in their relationship.this situation illustrates the blank effect'

asked by suzanne on December 31, 2015

to help employees become more effectively productive, companies may form cross-______ terms that draw on people from different departments to work on a special project.

asked by Tara on June 8, 2015
70. ## precalculus

graphing y=sin(x-pie/4) what are the first 5 x values of the graph ? We will get to you when the person comes online, please be patient, and ry to do soe work on your own, just don't ask for every single answer! :) try to do it by yourself ;) ~Ms.Sue~ :)

asked by lisa on November 13, 2006
71. ## History

Efficiency was a central theme of the reform movement. Who of the following was not an example of someone striving to examine every aspect of life itself and determine, often through new scientific principles, how to do more work with less energy?

asked by Stephanie on October 14, 2014
72. ## Physics bobpursley

Give some examples of applications that resulted from work done by physicists on superconductivity? Don't understand this. I only got wires as an answer which totally doesn't seem correct.

asked by Anonymous on September 7, 2011
73. ## English Grammar: Verbs

What are the verbs in these sentences? I just want to check my work. Gasping, Matty called for his gift to come. There was no sense of how to direct it. He became aware, suddenly, that he had been chosen for this. Thanks in advance!

asked by Cicilia on March 7, 2012
74. ## history

do you know any website that tells us anything about the ancient greek's landscapes? Already answered -- above. =) I'm sorry. But I'm a different person then LP. :D Your IP address is identical to LP's, so you're either in the same house or the same school

asked by eunice on May 18, 2007
75. ## Astronomy

You walk for 15 mins at 3.8m/s and then decide to run for 12 minutes at 2.5m/s. What is your average speed? My work: 15m+12m=27mins. 3.8m+ 2.5m=6.3m/s. 27+6.3= 33.3 (move decmil) to 3.33m/s

asked by Frustrated! on September 2, 2015
76. ## Socials-Ms. Sue

The steam engine changed society by the ingenious application of its power to kinds of work that formerly taxed the physical energies of the human race.

asked by Sara on November 23, 2009
77. ## Civics

What is a congressional fact-finding trip known as? Fill in the missing blank. In both the House and the Senate -------- do the detailed, daily work of considering proposed legislation?

asked by Anonymous on September 14, 2009
78. ## Math

Let's say I work in a store and a costmer walks up to me and asks me how much are a pair of head phones. And I say \$3.80. Let's say the custumer gave me \$5.00. How much change will I give back to the custumr?

asked by Mack on August 27, 2007
79. ## Physics

A man pulls a 10-kg box across a smooth floor with a force of 71 newtons at an angle of 23 degrees and for a distance of 97 meters. How much work, to the nearest joule, does he do?

asked by Michelle on December 10, 2008
80. ## Social Studies 7th Grade

Check my work please! Although India ahs only 16 official languages, people there speak more than ________ language. 1.30 2.50 3.100 4.800 I belive the answer is 1.

asked by Help! on December 13, 2016
81. ## literary

what is the literary term in this sentence. We will continue to work on grammar next week. I postponed our sceheduled test on subject-verb agreement until we got in a little more practice.

asked by clay on September 24, 2008
82. ## physics

Lars, of mass 75.6 kg, has been working out and can do work for about 2.0 min at the rate of 0.980 hp (731 W). How long will it take him to climb three flights of stairs, a vertical height of 11.0 m?

asked by Bowwow4 on February 28, 2011
83. ## Essay Ideas

I can't think of any that would work. It needs to be 800 words and "Explaining a Concept." It can't be a how-to, and it also can't be a general topic. I thought about talking about catering (I did it for a year) - but what would I write about it? Any other

asked by Kat on July 23, 2008
84. ## PHYSICS

Give some examples of applications that resulted from work done by physicists on superconductivity? Don't understand this. I only got wires as an answer which totally doesn't seem correct.

asked by Anonymous on September 7, 2011
85. ## Geometry

I need to write a paper about M. C. Escher, what he did, and how he became inspired to do tessellations and make that the focus of his work. Whatever you give me is fine as long as it's helpful, a link would be great.

asked by Zoella on December 18, 2016
86. ## Math

write order pairs for the following scenrios... a). if the neighbor decides to pay with in the first hour wage \$12.. then \$14... then \$16.... then \$18.... and then \$20.... b). you will work for \$12 to retake, it takes you 5 hours to do the job

asked by Faez on December 2, 2012
87. ## Labor Economics

What is the effect of an increase in the price of market goods on a worker's reservation wage, probability of entering the labour force, and hours of work? THanks for the help

asked by Andrei on September 13, 2008
88. ## Word problem

37 men each do 7hours 35min work in a day,per what total working time in a week per six days,dose their employer have to pay wages????

asked by Collins on September 30, 2015
89. ## Algebra

Which resource provides instructions and practice related to the content in the online textbook. A. TI - Nspire *** B. Sample work C. Power Algebra D. Teachlet tutorial

asked by Abby on September 2, 2015
90. ## english

The textbook stresses that your writing Fill in the Blank 01; that is, you must have "a goal of demonstrating the truth of your conclusions and clarifying and illuminating your idea about the topic and also about the work."

asked by Anonymous on August 30, 2012
91. ## Spanish

Fill in the blank. La puerta esta al lado _____ sillas. a. del b. de la c. de los d. de las*** Just checking my work:) *** - My Answer Thanks, Kaai97

asked by Kaai97 on November 9, 2015
92. ## Algebra II

Factor out: 64x^3 + 1 It is a binomial times a trinomial (4x+1)(16x^2-4x+1) should work. Check my math again! [8x^(3/2) - i][8x^(3/2) + i] Although my previous answer works (if i = sqrt-1), Taasha's is what you are looking for.

asked by Juri on August 4, 2007
93. ## physics

points A {at(2,3)m} and B {at(5,7)m} are in a region where the electric field is uniform and given by vector E=(4i+3j) N/C. What is the potential difference Va-Vb in volts? a. 23 b. 27 c. 30 d. 24 e. 11 i think the formula may be ds=dxi+dyi but even with

asked by Edward on April 6, 2009
94. ## 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
95. ## physics

A bucket filled with water weighing 50kg is raised from a well of depth 100m.if the linear density of the rope is 1kg per metre.then the work done is

asked by Thousif on September 22, 2017
96. ## mass communication

who is target audience of sex and the city? Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please re-post and let us know what you think. Then someone here will be happy to critique your

asked by Fran on March 23, 2007
97. ## science

how does radiation, conduction, and convection work in the human body Posted four times. You only need to post one time. Replicate posts often end up with no one answering.

asked by brittany on December 13, 2006
98. ## 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
99. ## Calculus

Can someone check my work on this problem? I'm studying for the AP test and I would really appreciate any help. Let f(x) = the definite integral from [-2,(x^2-3x)] of e^(t^2) dt At what value of x is f(x) a minimum? a. For no value of x b. 1/2 c. 3/2 d. 2

asked by ashley on April 28, 2015
100. ## English

Are these two sentences grammatically correct? 1)I recharge my cell phone once a day and I top it up once a month. 2)Computer's work is more accurate thna humans'.

asked by Franco on December 22, 2010