# 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 530
1. ## math

x/4-4=3x/4-6 plz show step by step

asked by megan on March 1, 2011
2. ## math

Show 1/4 of a set of 8 counters. How many counters is that?

asked by Jordan on April 7, 2010
3. ## Algebra

Can you please show step-by-step how to do this problem? (4x^2 - x +5)/ (x^2/3)

asked by Serena on September 3, 2013
4. ## Pre-Calc

Show that cos(pi - θ) = -cos θ for every angle θ

asked by Frankie on December 2, 2009
5. ## Maths

Show that each and every number is a rational number

asked by Monika on June 14, 2018
6. ## math

Show 1/5 of a set of 15 counters. How many counters?

asked by Anonymous on April 16, 2014
7. ## Math

c-d / d-c I know the answer is -1, but what is the math that I have to show to get to that answer? Thanks!

asked by Molly on November 7, 2015
8. ## mathematics for management

show that 2logx(a+b)= 2logx a+logx(1+ 2b/a + b^2/a^2)

asked by fizz on April 15, 2014
9. ## Math

Show that sin (α-30°)+cos (α+30°) = (√3 - √1)/√2 × sin (α+45°)

asked by NR on May 22, 2017
10. ## math

2+2-2*2/2= wat is it and it not 2 if ur thinking show me wat is it

asked by Anonymous on December 20, 2011
11. ## Harmonic progression

Show that if three quantities be in any two of the three progression, a.p., g.p. And h.p., they will be also in the third progression.

asked by Warnar on December 8, 2016
12. ## Maths

Show 1/4 of a set of 8 counters. How many counters is that?

asked by haris jilani on March 30, 2015
13. ## calculus: don't even no where to start from need help plz

(1)find dy/dx of y if y=tan^(-1)1/x^2 (2) if y=3z^2.z^2 find dy/dz (3) if y=x^x show that dy/dx=x|n(x+1).. thanks

asked by edward on August 23, 2015
14. ## math

Show that -1/2+ 1/2(i3 root) is a cube root of 1

asked by Praphul on December 9, 2012
15. ## Math

x=0 2 4 6 y=8 18 28 38 If x=8 , Y=? pls show step by step

asked by Sonny on September 29, 2010
16. ## calculus

Show that cos(pi - θ) = -cos θ for every angle θ

asked by Frankie on December 2, 2009
17. ## Please help. Mathematics Analysis Question

Let f: [a,b] -> R. Given f is integrable and bounded below, show 1/f is integrable.

asked by Shegiggles on February 22, 2007
18. ## mathematics

Show that for any p and q on the line ,the distance from p+q/2 is the same as the distance from p+q/2 to q.

asked by CHRYSTABELLE on August 3, 2011
19. ## Algebra 2

(-8 -3 1/3) 1/3 2 Can you show me the step by step on this problem? thank you,

asked by Iris on August 26, 2008
20. ## math

Simplify (3x-2)^3 - (4x+5)^2 Can you show it step-by-step please

asked by Kimmie on September 1, 2014
21. ## algebra

what is the quotient of. please show step by step x+4/x-1 / x^2+x/x-1

asked by Alaska Diamond on July 28, 2013
22. ## To Drbob222

I don't get how to get N, please show me cause I don't understand

asked by Jannet on April 21, 2014
23. ## algebra

can you please show me how to graph 6y+5x=-18 I know the x-intercept is (-18/5,0) and the y-intercept is (0,-3)

asked by patrick on April 15, 2016
24. ## Math

Show that cos x +cos(x+60)=3/5[1+root 3]

asked by Steph on February 20, 2013
25. ## Lotto

show me the next winning, the of winning 34,44,39,63,52 machine 16,35,77,66,80?

asked by King on December 22, 2014
26. ## algebra

How does: (k(k-1))/2! * (1/k)^2 simplify into: (1- (1/k))/2! Could you show me step-by-step? thanks.

asked by mike on June 6, 2010
27. ## science

Marlene's car won't start. She wonders if she is out of gas. She checks the gas gauge and sees that the car has gas. Then she wonders if the battery is dead. She checks the battery and discovers that it is dead. Marlene conclude that her car battery is

asked by ant on September 6, 2010
28. ## Math (Pre-Calc)

If any body could help me figure out these problems. I would love to know how to do it, and not just get an answer, however if you don't have the time to explain it to me, then the answer will suffice. 6. (1 pt) Solve the following equation in the interval

asked by Bryan on November 30, 2007
29. ## ASTRONOMY-HELP PLEASE!!!!!

Equipment:      Geiger counter.    Laboratory emitters of alpha, beta and gamma radiation.    Substances which may or may not be emitters    Assorted possible radiation blocking material.

asked by Rebecca on November 15, 2011
30. ## physics

electrons are accelerated from rest over a distance of 800m to a velocity of 3x10 7 m/s. what is the acceleration of the electrons and what formula did you use to find the acceleration. (1/2)[V(final)^2 - V(initial)^2] = a X V(final) = sqrt (2 a X) a =

asked by Chris on September 2, 2005
31. ## history

Hey , can someone please tell me if this sounds good so far about the causes of World war I, and if not please give me your input. While President Woodrow Wilson was having political issues with Mexico, anxiety between European countries was increasing.

asked by Sarah on December 19, 2006
32. ## Math

Please help me with this ASAP! I need help with this just checking my answers thanks 1. There are 14 blue marbles, 8red marbles, and 12 green marbles in a jar. What is the ratio of the total number of marbles to the number of red marbles? A. 24:8 B. 34:8

asked by Katie on May 26, 2016
33. ## Physics Work unit

1. A football player pushes a tackle dummy forwards at a constant 0.85m/s for 11m using 7150J of energy. The tackling dummy mass is 120kg. a) find force the player exerts? b) what is the frictional force the dummy exerts? c) what work is done by the

asked by Jamie on February 1, 2014
34. ## physics Work unit

1. A football player pushes a tackle dummy forwards at a constant 0.85m/s for 11m using 7150J of energy. The tackling dummy mass is 120kg. a) find force the player exerts? b) what is the frictional force the dummy exerts? c) what work is done by the

asked by Jamie on February 1, 2014
35. ## Physics

A 12.8 gram bullet embeds itself in a 2.370 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 487 N/m. The maximum compression of the spring is 11.0 centimetres. a) What was the initial speed of the bullet

asked by Jalopy on November 29, 2012
36. ## Physics

A 14.3 gram bullet embeds itself in a 2.823 kg block on a horizontal frictionless surface which subsequently collides with a spring of stiffness 378 N/m.  The maximum compression of the spring is 13.5 centimetres.   a)  What was the initial speed of the

asked by Alphonse on November 22, 2012
37. ## English

I still have a few doubts on yesterday's sentences, especially on those concerning the use of the past perfect. I really hope you can see them. 1)His friends expect him to be discharged from hospital today. He is expected (by his friends is correct?) to

asked by Mike1 on April 17, 2011
38. ## Accounting

1. A company acquired some land for \$80,000 to construct a new office complex. Legal fees paid were \$2,300, delinquent taxes assumed were \$3,400 and \$5,850 was paid to remove an old building. What is the cost basis for the land? a. \$90,600 b. \$91,550 c.

asked by Tom on November 5, 2009
39. ## Physics

Please help me with these three questions,they deal with coefficient of friction 1) A car rounds a turn of radius 25m at a speed of 20m/s. Find the coefficient of friction neccessary to keep the car on the road 2) A man is attempting to slide a piece of

asked by bryian on January 27, 2010
40. ## Chemistry

FB1 is a solution containing a mixture of potassium carbonate and sodium hydrogen carbonate . 25cm^3 of this mixture was to titrated against 0.250mol/dm^3 solution of HCL. In one titration using phenolphthalein as indicator, 10.00cm^3 of the acid was

asked by Diane on February 21, 2016
41. ## Physics

A 1500-kg blue car is travelling south, and a 2000-kg red sports car is travelling west. If the momentum of the system consisting of the two cars is 8000kg.m/s directed at 60 degrees west of south, what is the speed of each car?

asked by Reynaldo on March 3, 2015
42. ## physics

How do you do this problem? The water used in many fountains is recycled. For instance, a single water particle in a fountain travels through an 85 m system and then returns to the same point. What is the displacement of a water particle during once cycle?

asked by Anonymous on September 17, 2006
43. ## computer

hi on my computer, i put a background on the desktop. i didn't like that one so i got another background but how do i get rid of the old one. because everytime i log on using my log in name, the picture of the old picture pops up and then my new background

asked by apoorva on March 12, 2007
44. ## Science

If a brake system fails due to lack of fluid, is the lack of fluid a basic, primary, or secondary event in a fault tree analysis? It could be primary, however, usually, it would be secondary, the primary failure being a ruptured hose or O ring. Thanks!

asked by Mary on March 8, 2007
45. ## physics

Two particles each with charge +2.68 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = −1.00 m. (a) Determine the electric potential on the y axis at y = 0.660 m. (b) Calculate the change in electric potential energy of the

asked by sarah on January 22, 2012
46. ## physics

Two point charges each of magnitude 2.14 µC are located on the x axis. One is at x = 1.00 m and the other is at x = -1.00 m. (a) Determine the electric potential on the y axis at y = 0.620 m. kV (b) Calculate the change in electric potential energy of the

asked by Anonymous on February 6, 2012
47. ## Math

At time t = 0, a set of three points A, B and C forms an equilateral triangle of side 6 cm. If two of the sides of the triangle are decreasing in length at the rate of 0.1 cm/sec and the third side is increasing at the rate of 0.1 cm/sec, how long will it

asked by ABhi on December 2, 2015
48. ## Englsih

This is one of my english homework. Can someone have a look at it and give me some suqqestions. Thank you. The Summary of English Grammar defines the major word-classes in terms of meaning rather than structure. By references to any one of the major

asked by Erica on March 9, 2009
49. ## Chemistry

Calculate soln pH if 100 mL 0.10 M Na2S is mixed with 200 mL 0.050 M HCl. The hint is consider Kb for HS^-. The answer is pH=9.74. Can someone walk me through the neccessary steps to get this answer? What are the k1 and k2 values for H2S in your text?

asked by John Peterson on May 23, 2007
50. ## maths

A mass of 350 kg is lifted by 2 cables connecting at the same point as shown. Determine the tensions in each cable when the system is in equilibrium.Left hand cable is t1 at 40 degree angle and Right hand cable is t2 at 30 degree angle

asked by luke on November 23, 2012
51. ## Physics

A single conservative force F(x) acts on a 1.6 kg particle that moves along an x axis. The potential energy U(x) associated with F(x) is given by U(x) = -2.9xe-x/3 where x is in meters. At x = 3.4 m the particle has a kinetic energy of 7.2 J. (a) What is

asked by Aaron on March 7, 2011
52. ## PHYSICS

(a) What is the electric potential a distance of 2.3 10-15 m away from a proton? Answer for this part is :626000 (b) What is the electric potential energy of a system that consists of two protons 2.3 10-15 m apart-as might occur inside a typical nucleus?

asked by SHUBHANGI on February 24, 2010
53. ## Physics

A point charge Q1=-2µC is located at x=0, and a point charge Q2=-8µC is placed at on the x -axis of a cartesian coordinate system.The goal of this problem is to determine the electric field,E(x)=E(x)x^ , at various points along the -axis. (a)What is E(x)

asked by Anonymous on February 27, 2013
54. ## history

What led to the passage of the Pendleton Act? The government wanted to curb immigration. Voters wanted an end to Reconstruction. Government corruption was leading to overspending. Voters wanted an end to the spoils system. B?

asked by michael on January 23, 2019
55. ## Science

which of the following can help astronomers detect if a star is part of a binary star system A. the star varies temperatures near the binary star B. the star wobbles near the binary star C. the star has very strong gravity D. the star belongs to an open

asked by ♡school lover♡ on November 13, 2018
56. ## Advance Functions

The population of a small town is modeled by the function p(t)=20(4t+3)/2t+5, where P(t) is the population, in thousands, and t is time, in years, since the start of 1990. The town will need its own transit system if the population exceeds 50,000. Will the

asked by Tristan on January 23, 2014
57. ## Physics calculus based

Consider the Sun to be at the origin of an xy-coordinate system. A telescope spots an asteroid in the xy-plane at a position given by (x, y) with a velocity given by (vx, vy). [DATA: (x, y) = (3.3, 5.2) ×10^11 m; (vx, vy) = (-6.1, -4.0) ×10^3 m/s.] (A)

asked by JASON on June 19, 2012
58. ## History

Which option describes a scientific innovation during the Renaissance? the Julian calendar, consisting of 12 months and 365 days, was invented a complex legal system with terms such as habeas corpus, pro bono, and affidavit was created the heliocentric

asked by malia on October 16, 2017
59. ## ACC

someone help me with this questions please 1. How would the following costs be classified (product or period) under variable costing at a retail clothing store? Cost of purchasing clothing Sales commissions A) Product Product B) Product Period C) Period

asked by matt on November 16, 2007
60. ## Geometry

A chord PQ of a circle with radius r subtends an angle B at the center. Show that the area of the minor segment PQ=1/2.r^2.(B-sinB) and write down the area of the major segment PQ interms of r and B.

asked by Age on June 10, 2015
61. ## Mathematics

A piece of string can be cut into equal lengths of 20cm, 24cm or 30cm long. find the length of the shortest piece of string for which this is possible. PLEASE SHOW WORKING

asked by Ashley on September 30, 2009
62. ## Physics

An object with a weight of 150 N hangs from the ceiling as shown in the figure. 1) Find the tension in each string. q1 = 60 degree and q2 = 45 degree Please show it step by step along with the equation to use

asked by Anonymous on October 3, 2016
63. ## mathematics need help

If the ratio of roots of x² + bx + c = 0 is equal to ratio of roots of x² + qx + r = 0, then 1. r²c = qb² 2. br² = qc² 3. b²r = cq² 4. rc² =bq² plz show step

asked by weyeremi on April 4, 2017
64. ## math

can someone show me how to set up this equation? the following figure which consist of seven equal squares has an area of 63 square units. find its perimeter. I have been racken my brain trying to set this equation up.

asked by Kev H on October 21, 2010
65. ## chemistry

Okay let me write it this way. I mixed 30 mL of 0.1 M Acetic Acid and 15 mL of 0.1 M Sodium Hydroxide and measured the pH. Then I added 5 mL of 0.1 M NaOH to this buffer and measured the pH. It's asking me: Show the calculations for the pH of the buffer

asked by fenerbahce on July 14, 2012
66. ## physics

Two identical cars are traveling at the same speed. One is heading due east and the other due north, as the drawing show. What is true regarding the kinetic energies and momenta of the cars?

asked by jo on October 23, 2010
67. ## Maths

An 24hour digital clock is gaining three minutes every hour .If you set it to the correct time at 6 p.m.on Saturday,when will it show the correct time again? Answer must be in full form

asked by Yonwaba on February 21, 2019
68. ## English - ms. sue

ms. sue i also have to answer one question from story that be the story move from describing two similar friends to ones whose views become much different. it say what writer do to intensify contrast b/w the 2 to show that now each of us b by herself. I

asked by Mohammad on December 17, 2012
69. ## trigonomentry out of ideal help ah!crying

compute.. Cos(1degree)+cos(3degree)+cos(5degree)+...+Cos(179degree) plz show working even an hint can,t help me.Have been do maths alday my brain is fried..Ah thanks

asked by david on April 1, 2016
70. ## Math

Calculate the simple interest on each amount the total amount at the end. A deposit of \$2550.00 that earns 3% interest over 30 months. Pleas show your steps! Thankyou (:

asked by Vanessa on October 14, 2010
71. ## Chemistry 11th Grade

Nitrogen form five compound with oxygen in which 1.0 g of nitrogen combines with 0.572,1.14,1.73,2.28 and 2.85g of oxygen respectively .show dis figure agree with law of multiple proportion.

asked by Sachin on June 20, 2017
72. ## Physics

Jada throws a rock horizontally from a bridge 32 m above the water, which hits the water approximately 25 m from a point immediantly below the bridge. Show that Jade's tossing speed was about 10 m/s.

asked by Anonymous on September 25, 2012
73. ## physics As

How do you calculate the braking distance? driver reaction time=0.6s initial speed of car=30ms-1 speed*2= distance*4 Please show all the steps and the equations you used in words

asked by jan on November 23, 2017
74. ## equation and inequalities

a.major league baseball player chews 17 pieces of gum per game.write anslgebraic expression to show how many pieces of gum he might chew in games

asked by lilybelle on January 2, 2015
75. ## ELA

What is the function of a preposition in a sentence? 1)to relate a noun or pronoun to another word. 2)to express action 3)to show the subject of the sentence is active with the main verb. 4)to tell more about the subject. I think #1 Thank you.

asked by Jamie M on March 8, 2018
76. ## Physics

A ball mass 1000g is drop from a height Of 5m and rebounded to a height Of 25 m. Find i it kintentic just before impact ii its intial rebounce velocity and kintentic and show the working.

asked by Anonymous on October 13, 2016
77. ## 5th grade math

ted wrote a three-digit number. He divided it by 14, added 12, and multiplited by 20. His final anser was 600. what number did ted write? Plese show me how t get the answer. thanks.

asked by Julie on December 14, 2010
78. ## math

You want to make a graph to show how you spend your time each day. What would be the best graph for this data? A. Circle graph B. Line graph C. Histogram D. Stem_and leaf plot Is the answer A? Thank you

asked by Anonymous on March 19, 2015
79. ## Maths

the distance, s metres, traveled by a car in t seconds after the brakes are applied is given by s=10t -t^2. Show that it's acceleration is constant, find the the distance the car travels before it stops?

asked by Marney on September 13, 2012
80. ## math

The tax on an item is \$60. Given a tax rate of 8.5%, which of the following is the price of the item, to the nearest dollar, before taxes? a. \$408 b. \$510 c. \$650 d. \$706 I think D but not for sure. Can u show me how u set this problem up?

asked by AMGCSTRNBSN on April 1, 2016
81. ## Science

from the top of a tower t ball is thrown vertically upward when the ball reaches distance h below t it's speed was double if what it was at height h above t show that greatest height attained by it above t is 5/2h

asked by Sukhwinder on July 6, 2018
82. ## English

Which of these is a good guideline to follow when designing a presentation slide show? Use dark backgrounds Avoid large type Avoid fancy fonts Use only one slide

asked by TK on August 22, 2018
83. ## Continuity Calculus Help

9.0/1 points | Previous Answers SSTCalc6 2.3.046.My Notes Question Part Points Submissions Used Let f(x) = 4x2 if x > 2 4x + 3 if x ≤ 2. Show that f is continuous from the left at x = 2, but not from the right. lim f(x) = n→2− f(2) = lim f(x) =

asked by John on February 8, 2017
84. ## physics

Which of the following is one of the best advantages to using presentation software to create a slide show? A. You do not have to use a computer. B. You can click through the presentation easily. C. You can print slide handouts for your audience. D. You

asked by dakota on June 4, 2018
85. ## physics

Is it impossible to lose all of the kinetic energy in a collision? Or, does a ball which bounces several times before eventually coming to rest show how kinetic energy can completely disappear?

asked by Student on November 13, 2009
86. ## 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 rigth answer: b

asked by hh on April 30, 2013
87. ## Keyboarding and Word Processing

The _________ enables you to see the hard returns on your screen. Choices are: STATUS BAR, SCROLL BAR, SHOW/HIDE BUTTON, or PRINT PREVIEW BUTTON.

asked by Deanna on May 5, 2010
88. ## physics

please show me how to do this in steps. A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0degrees above the horizontal. What is the magnitude of her horizontal displacement? (assume no air resistance and that Ay= -g =

asked by teamjakeward on February 11, 2009
89. ## MsSue- re

im sorry my post appeared twice it didn't show my question when i looked then when i posted it again it was there. Im sorry my computer is a bit slow. thankyou for your help now you have explained the question ive got an idea what i need to do. Thankyou

asked by Kerrie on March 17, 2009
90. ## Chemistry-Conversions

Can you please show me how to set up these conversions (how to do each of these conversions) Question- The pressure of gas is measured ay 550 mm Hg. Calculate the pressure in: a. Torr b. lb/in2 c. atm d. in Hg Can someone other than DrBOB answer this

asked by KL on May 3, 2012
91. ## Chemistry-Conversions

Can you please show me how to set up these conversions (how to do each of these conversions) Question- The pressure of gas is measured ay 550 mm Hg. Calculate the pressure in: a. Torr b. lb/in2 c. atm d. in Hg Can someone other than DrBOB answer this

asked by KL on May 3, 2012
92. ## Chemistry

What symbol is used to show the standard reduction potential of an oxidation reaction in a half cell? The sub means what follows is a subscript So the 0 is a superscript and the sub is its subscript E^0 sub cell*** E^0 sub red E^0 sub oxid All of the above

asked by Kristin on June 1, 2016
93. ## Chemistry

Show how you would calculate the % yield of hydrogen if 40.0 grams of magnesium react with an excess of nitric acid producing 1.70 grams of hydrogen gas. Mg + 2 HNO3 ---> Mg(NO3)2 + H2

asked by Elizabeth on March 30, 2016
94. ## Math

I do not understand this at all. Can someone please show all the steps sp I am able to comprehend: Four points are on a line segemnts, as shown. If AB:BC=1:2 and BC:CD=8:5, then AB:BD equals what? Assume CD = 1 Then, BC = 8.5. and AB == 10.2. Therefore,

asked by Gina on December 3, 2006
95. ## MATH 6th

1. Is there a website that can show me how to divide decimals by10-1000? 2. Divide decimals by whole numbers? 3. Patterns with tenths, hundredths and thousandths? PLEASE HELPL ME - THANK YOU IN ADVANCE. JUST SOME SAMLES OF ALL THE ABOVE

asked by xavier on April 26, 2012
96. ## Math help please

Show that one and only one out of n,n+4,n+8,n+12,n+16 is divisible by 5,where n is any positive integer. A two digit number is obtained by either multiplying the sum of the digits by 8 and then subtracting 5 or by multiplying the differences of the digits

asked by Abhishek kumar sahi on August 4, 2011
97. ## 5th grade

dana ordered 1 medium cheese pizza with 8 slices. she ate 2 pieces.write 2 equivalent fractions to show the partof the pizza dana did not eat.

asked by morgan on April 7, 2009
98. ## Physics

Two identical cars are traveling at the same speed. One is heading due east and the other due north, as the drawing show. What is true regarding the kinetic energies and momenta of the cars?

asked by david on October 24, 2010
99. ## College Algebra

A rectangular parcel of land is 20 ft longer than it is wide. Each diagonal between opposite corners is 100 ft. What are the dimensions of the parcel? This is an Example in the book but it does not clarify in the text book, Can anybody please show me how

asked by Lydia on July 13, 2015
100. ## Math 10

Algebraically, determine the vertex form of a quadratic relation, if the vertex is at (-1, 2) and the point (1, -10) is on the parabola. Show all of your steps. I know that the formula is y=a(x-h)suared+ k but how do i apply these numbers to this formula?

asked by Serena on April 22, 2014