# 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 459
1. ## Help! Algebra 1

Factor completely. 32a^2+96a+72 I tried to work it our but I can't seem to get the correct answer. Thanks!

asked by Claritza on April 8, 2016
2. ## Geometry

Does SSSS postulate work as a congruence theorem for quadrilaterals? Explain.

asked by Victoria on December 2, 2012
3. ## MATH FOR PROFESSIONALS

DISCUSS OPTIONS FOR OBTAINING A HOME LOAN AND HOW MORTAGES WORK

asked by RONDA on May 2, 2011
4. ## Chemistry

What is the wavelength of light (in nm) if the energy of the wave is 1.33x 10^-19 J? How do I work this problem out????

asked by Evin on April 24, 2016

PLEASE CHECK MY ANSWERS please check my answers and if there wrong maybe you could tell me the correct one.but thanks anyways. 1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated

asked by anna on January 31, 2014
6. ## chemistry

Write out the net ionic equation for: Cd(NO3)2 + Na2S -----> 2NaNO3 + CdS ----- thanks!! Write out the net ionic equation for: Cd(NO3)2 + Na2S -----> 2NaNO3 + CdS If this is done in a water solution, then the sodium nitrate will be in solution, as was the

asked by Tessa on September 12, 2006
7. ## math

a poster is 25cm taller than it is wide. it is mounted on a piece of cardboard so that there is a 5cm border on all sides. if the area of the border alone 1350cm^2, what are the dimensions of the poster? It is almost a must to draw a diagram but I can't do

asked by jason on November 29, 2006
8. ## Chemistry

Chromium (III) iodate has a Ksp at 25°C of 5.0 x 10–6. 125 mL of a solution contains 0.0050 mol L–1 Cr (III) ion. What is the molar solubility of chromium (III) iodate at 25°C? a. 8.4 x 10–2 mol L–1 b. 2.2 x 10–3 mol L–1 c. 6.3 x 10–2 mol

asked by jess on May 27, 2016
9. ## ALG2! WORD PROBLEM! PLZ HELP!!

A business wants to give each of its employees a free ticket to the amusement park and has budgeted \$1200 for tickets. 1. Write and solve an inequality to find the maximum number of 1-day, adult tickets that can be bought. When you round your answer,

asked by tyneisha on November 28, 2012
10. ## ALG2! WORD PROBLEM!very important!!

A business wants to give each of its employees a free ticket to the amusement park and has budgeted \$1200 for tickets. 1. Write and solve an inequality to find the maximum number of 1-day, adult tickets that can be bought. When you round your answer,

asked by tyneisha on November 30, 2012
11. ## science!

i want you to review the (3)descriptions and the (4)questions and correct my answers of this worksheet called Scientific Method Bikini Bottom Experiments. tank you tutors for reviewing the descriptions and questions and correcting my answers. The Bikini

asked by anon on September 15, 2015
12. ## Chemistry

Hi I need help with these following questions. I have all of the data needed. Calculate the enthalpy change of the reaction for each trial (in kJ) 3. Calculate the heat released by the reaction for each trial (in J): 2. Calculate the heat absorbed by the

asked by Matt on November 17, 2013
13. ## physics

A firefighter at street-level, 55.0 m away from a burning building, directs a stream of water from a fire hose at an angle of 35.0° above the horizontal. If the speed of the stream is 50.0 m/s, at what height will the stream of water strike the building?

asked by micole on May 16, 2007
14. ## chemistry

to find the molarity of an aqueous solution of an ionic solid what do you need to know? a... mass of solid, formula of solid, volume of water b...moles of solid, formula of solid, volume of water c....mass of solid, formula of solid, volume of solution

asked by Anna on November 30, 2010

Perform the indicated operations and simplify the result. Leave your answer in factored form. 1) x/16 - 1/x all over 1 + 4/x A) x+4/16 B) x-4/16 C) 16/x+4 D) 16/x-4 E) -16/x+4 I chose answer C. I saw this as x^2-16/ x+4. Multiply the following using the

asked by Hannah on September 9, 2010
16. ## chemistry

which of the following compounds contains the lowest percentage by mass of nitrogen? 1) NH4NO3 2) (NH4)2 SO4 3) NaNO3 4) NH3 can someone please help me??what method should i use?how do i do this? Find the molar mass of each compound by adding the molar

asked by Emma on May 27, 2007
17. ## Water - Math Question

This question is related to water footprint calculation. I have no idea how to go about this, if anyone could point me in the right direction, I'd be forever grateful! Background info: The water footprint of the resident of a Blue Sea riparian country (92

asked by Allison on October 19, 2013
18. ## MTH233/statistics UOP

Industry 1980 1997 Agriculture 290 727 Mining 994 586 Construction 4,473 5,513 Manufacturing 21,165 18,633 Transportation 4,623 6,247 Trade 20,258 28,813 Finance and Insurance 5,295 7,367 Services 17,186 37,380 • • The table above shows the number of

asked by sue on July 22, 2010
19. ## Econ MC

Dick owns a dog whose barking annoys Dick's neighbor Jane. Suppose that the benefit of owning the dog is worth \$500 to Dick and that Jane bears a cost of \$700 from the barking. Assuming Dick has the legal right to keep the dog, a possible private solution

asked by Anonymous on March 17, 2007
20. ## rate of change

A missile rises vertically from a point on the ground 75,000 feet from a radar station. If the missile is rising at the rate of 16,500 feet per minute at the instant when it is 38,000 feet high, what is the rate of change(in radians per minute) of the

asked by Jen on December 10, 2006

pls.hep me to solve tjis problem.. is anyone willing to solve please. PROBLEM 1: On Jan 1, 2011, the Rhiri, Brit & Keisha partnership is formed. Rhiri and Brit contribute cash of \$30,000 and \$20,000 respectively, while Keisha contributes assets with the

asked by jessie on June 4, 2011
22. ## Math

The organizers of of a walkathon get cost estimates from two printing companies to print brochures to advertise the event. The cost are given by the equations below, were C is the cost in dollars and N is the number of brochures. Company A: C = 15 + 0.10n

asked by David on September 13, 2011
23. ## Math

The organizers of of a walkathon get cost estimates from two printing companies to print brochures to advertise the event. The cost are given by the equations below, were C is the cost in dollars and N is the number of brochures. Company A: C = 15 + 0.10n

asked by David on September 13, 2011
24. ## algebra/materials engineering

what phases are present in a slow cooled 1090 stell and how much of each of these phases are present? so the phases are cementite and pearlite and it's hypereutectoid. The formula is hypereutectoid=cementite(6.67%)+pearlite(0.8%) I know in a 1090 steel,

asked by Anonymous on October 18, 2010
25. ## chemistry

You are a workstudy for the chemistry department. Your supervisor has just asked you to prepare 500mL of 3M HCl for tomorrow's undergraduate experiment. In the stockroom explorer, you will find a cabinet called "Stock Solutions". Open this cabinet to find

asked by Lauren on April 1, 2019
26. ## history

I'm stuck between two answers on this question, and was wondering if someone could help me out. My textbook isn't really clear on the answer either, so I will highlight parts of the paragraphs I read that led me to the answers I'm stuck on. I'd really

asked by Meeha on December 29, 2009
27. ## English

1. Dick and Terry started to raise money. 2. Dick and Terry started to collect money. 3. We are rasing money for charity. 4. We are collecting money for charity. 5. We are raising volunteers to do the work. 6. We are collecting volunteers to do the work.

asked by rfvv on April 1, 2016
28. ## finance math

Richard purchased a car for \$39,905. He made a downpayment of \$15,000 and paid \$614 monthly for 45 years. Find the APR. Richard was able to payoff the loan at the end of 30 months. Using the Actuarial method find he unearned interest, and payoff amount. My

asked by Latrice on April 12, 2016
29. ## chemistry

Aluminum reacts with sulfuric acid, which is the acid in car batteries. If 20.0 grams of Al is placed into a solution contain 115 gram of H2SO4, how many grams of hydrogen ga could be be produced? 2Al + 3H2SO4 ---> Al(SO4)3 + 3H2 20.0g/27 = .741 .741 X 3/2

asked by mike on May 15, 2007
30. ## Finance

Bunyan Lumber LLC: Calculate when the company should harvest the timber Bunyan Lumber, LLC, harvests timber and delivers logs to timber mills for sale. The company was founded 70 years ago by Pete Bunyan. The current CEO is Paula Bunyan, the granddaughter

asked by Anonymous on April 12, 2010
31. ## Chemistry (CHEM)

Can someone explain the electrical conductivity of melted and of aqueous solutions of ionic compounds. An explain it using the characteristics of ionic compounds. ThankS A Whole lot.. In Advance I suggest you go to the site recommended by Ms.Sue. Here is a

asked by Brittany on November 14, 2006
32. ## COLLEGE

I need imput on what I have on social issues of human trafficking Human trafficking is a serious social issue around the world, because it violates human rights. The human and social issues of human trafficking can consist of: Physical abuse of victims,

asked by patiance on August 11, 2010
33. ## Essay Check

This is an essay about the article called Rambo's of the road, could you please read it and see if I am getting there? It is supposed to be a critique. Note: This is not a spellcheck or proofread, I just want someone to read it and tell me if it is alright

asked by HM on September 11, 2011
34. ## English

1. I thought of other names but I was not satisfied with any of them. 2. I thought of other names but I was satisfied with none of them. (Are both the same?) 4. I always watched him "working" when I was young. (Did "I" watched him working for some time?)

asked by rfvv on May 1, 2016
35. ## Math

1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. 2. Design a fair race in which the two animals have an equal chance of winning if they race at their top

asked by Oof on May 11, 2018
36. ## english

what is the plural form of turkey. i think it is turkie am i right can somebody help me If you look up the word in a hard copy dictionary (as I did), you would find that the plural is turkeys. Looking it up yourself will get you similar answers more

asked by mario on July 25, 2007
37. ## physics

an object is at tower p. if Velocity at distance h below p is double then at a distance h above p then show that max height above p is 5h/3.

asked by armando on August 23, 2011
38. ## Math

Iam re-posting the following questions and would appreciate if anyone could show the working. 1]Find lim sinx/2x x-->0 2]lim 3x^2-4x/7 x-->0

asked by Tania on August 22, 2011
39. ## Algebra

write an expression to show the difference of twice X and 3 then find the value of your expression if x equals negative 2 Help again pls

asked by Chandler on August 26, 2015
40. ## geometry

show that the quadrilateral formed by joining the mid -points of the sides of a square is also a square.

asked by selva on October 13, 2008
41. ## calculus

Given v = sq.root of g^2 + 2gs where g is a constant and v is velocity and s is a positive function. Show that acceleration is a constant.

asked by Anonymous on March 31, 2010
42. ## math

Consider the following list of premises: a ^ :b ! c; :a ! :d; Show that g is a valid conclusion by constructing a step-by-step argument

asked by HELP on August 22, 2011
43. ## music

name and define three rhythmic elements that composers could use in their composition. Show how each would affect the overall sound of the composition? thank you

asked by justastudent on January 30, 2013
44. ## math

x=((30)/(5.15+1.84i))+(5.15+1.84i) i= square root of (-1) final answer of x=10.3 please show me how you drive this equation to get the 10.3. thank you so much.

asked by layth on September 21, 2010
45. ## poetry

Can somebody list some poems that is considered as a "Poetry Survivor" (a best poem that relates to the TV show "Survivor"

asked by Jessica on October 28, 2010
46. ## Finite

Assume that the producer has 8 skits and 5 commercials available. In how many ways can the producer create a television show?

asked by Megan on January 24, 2010
47. ## Algebra

Use the intermediate theorem to show that the polynomial function value has a zero in the given interval f(x)=x^5-x^4+8x^3-7x^2-17x+7; [1.6,1.8] Find the value of f(1.6) Find the value of f(1.8)

asked by Alley on March 31, 2013
48. ## music

how do u use a repeat sign and were do you use it at This site will not only show you the sign, but explain when you need to use it. (Broken Link Removed)

asked by ashley on January 4, 2007
49. ## Chemistry

How many grams of product are formed from 2.0 mol of N2 (g) and 8.0 mol of Mg(s)? Show all calculations leading to an answer.

asked by Robi on August 20, 2015
50. ## Math

How do I show model to multiply 0.16*0.5? I did try by shading .16 over 0.5 but it giving me .10 answer. I need my answer 0.08. Plz help me what I am doing wrong.

asked by Lauren on September 6, 2017
51. ## Aviation

I love airplanes; can you show me where to download Flight Simulator 2004 (I want to pretend to use airplanes)?

asked by Anonymous on October 16, 2008
52. ## Algebra II

Determine if the binomial is a perfect square binomial. If so, show the original monomial squared. X^2 + 16 X^2 + 4

asked by Anonymous on February 9, 2017
53. ## Chemistry

The mass of spectrum of 2,4-dimethylpentane shows peaks at m/z 43, 57, and 85. Show the fragments which produce these peaks.

asked by Ryan on March 5, 2015
54. ## maths

The perimeter of a farm in a shape nf a square what is the length of 1 side the farm ?show all calculations

asked by Cindy on July 27, 2011
55. ## statistics

A company is trying to show that their wages are fair. The mean salary is \$45,000 but the median is \$67,000. Which should they use for their position?

asked by anoneemose on January 19, 2013

calculate each power of 10 what pattern do you see in part (a) explain hoe your pattern can show that 10 to the pwoer of 0=1

asked by unknown on September 20, 2010
57. ## Math

7 to the power of - 2 _______________________ 7 to the power of - 4 could you show me how you get 49 as the naswer...the long line shows that you need to divide both of them

asked by Dakota on October 15, 2009
58. ## math

find the eqt. of tangent to the curve y=-x^2+2x-10.[ans:y=2x-10] but my ans is y=-9. if im wrong could you show the calculation.

asked by fanny on July 22, 2011
59. ## Maths

Draw a picture to show how 3 friends can share 12 chocolate bars equally nd how much chocolate will they each get

asked by Sithembile on May 22, 2017
60. ## Algebra

Show all steps and Find the maximum revenue for the revenue function R(x)= 360x - 0.05x^2

asked by Leah on November 10, 2013
61. ## Science

Show that in a SIGN the phase difference between displacement and velocity is 90°and between displacement and acceleration is 180°

asked by Riya on February 14, 2018
62. ## Calculus - Simpson's Rule and Arc Length

Can any show me step by step on how to get this? I keep on getting different answers... Thank You! Use Simpson's rule with n=10 to estimate the arc length of y=x^(-1/3), for 1

asked by Chelsea on July 31, 2014
63. ## help maths

plz help plz help if z=x+jy,show that the locus arg{(z-1)/(z)}=pi/6 is a circle.find its centre and radius

asked by putman/raj on January 31, 2017
64. ## Discrete Mathematics

Suppose a0, a1, a2 ,... is a sequence defined recursively as follows: a1 = 1, a2 = 2, a3 = 3 and ak = ak-1 + ak-2 + ak-3 for all integers k > 3. Use strong induction to show that an < 2n for all integers n ≥ 1.

asked by Vevea Tepou on October 25, 2012
65. ## algebra

Determine the number and type of roots for each equation. thanks inadvance can u please show mw step by step thanks 2X(X+2)=-2

asked by john on October 7, 2013
66. ## Pre Calc

find the magnitude and direction angle of the vector v, v=-2i+5j please help i have no idea how to do this. could you show me step by step?

asked by Nate on June 2, 2010
67. ## Maths of class 9

P and q are points on side CD of a parallelogram ABCD. Show that area of trianglePAB =area of triangleRAB

asked by Abdullah on November 25, 2016
68. ## Calculus 3

Find the limit, if it exists, or show that the limit does not exist. lim of x+y/y^2-x^2 as (x,y) approaches the point (-1,1).

asked by Anonymous on March 4, 2012
69. ## computers

is there a web site that can show you step by step how to put information into a flash drive

asked by carlos on September 29, 2008
70. ## Maths - Matrices

I'm having trouble with doing this matrix proof The question is "Given some matrix A has the property A*2=A^-1, show that determinant A = 1, i.e |A| = 1" I've tried for ages, but I can't seem to do it, this is what I got to A^2= A^-1 |A^2| = |A^-1| |A|^2 =

asked by TP on March 29, 2009
71. ## Data Management

Determine the total number of arrangements of three or four toys from a basket of 8 different toys. Show your calculations

asked by Person on February 27, 2018
72. ## Geometry

Write a coordinate proof to show that triangle FGH congruent triangle FDC

asked by Anon on December 12, 2017
73. ## Calculus 3

Find the limit, if it exists, or show that the limit does not exist. lim of x+y/y^2-x^2 as (x,y) approaches the point (-1,1).

asked by Anonymous on March 2, 2012
74. ## value

A Biased Coin Is Such That The Head Is 4 Times More Likely To Show Up Than The Tail.What Is The Probability Of Obtaining A Head?

asked by Jonathan on November 30, 2016
75. ## math

x=((30)/(5.15+1.84i))+(5.15+1.84i) i= square root of (-1) final answer of x=10.3 please show me how you drive this equation to get the 10.3. thank you so much.

asked by layth on September 21, 2010
76. ## algebra 2

help please!! state the possible rational zeros for each function. then find all zeros. y=x^3-13x^2-x+13 show all the step please .thanks

asked by lisa on January 9, 2013
77. ## Help!

I was wondering if someone could show me how to post links on this website. It gives me an error when I try to post a link in my reply.

asked by Don on January 5, 2009
78. ## ENGR

1. Use the axioms of probability to show the following: (a) For any event E, P{Ec} = 1 − P{E}. (b) P{∅} = 0. (c) For any events E and F, if E ⊂ F, then P{E} ≤ P{F}. (d) If the events E1, E2, and E3 are mutually exclusive, then P{E1∪E2∪E3} =

asked by sara on September 10, 2014

Given that triangle ABC with sides a, b, and c, show that the area of the triangle is given by A = ((a^2)(sinB)(sinC))/((2sin(B+C)))

asked by KnowsNothing on December 12, 2012
80. ## chemistry

Can someone show me a website that talks about spectrums of elements. Including why they're all different, like basic information of spectrums. The why, how, and what.

asked by astrid on November 12, 2009
81. ## chemistry

What is the expression and numerical value for the equilibrium constant for the following: Ag+ + Cl- = AgCl(s) using the Ksp= 1.8*10^-10 of AgCl please show how its calculated.

asked by S on March 10, 2010

You have 3 sandwich wraps. Show 3 different ways to cut the wraps to feed 9 people equally

asked by cici on September 2, 2010
83. ## MS 300

Suppose a and b are positive integers. Write a proof by contradiction to show that if a-b is odd,then a+b is odd.

asked by ugh! on October 5, 2009
84. ## Math

A rectangle is x+3cm long and ycm wide.If the perimeter of the rectangle is 24cm,show that y =a-x

asked by Okian on September 11, 2018
85. ## MATH

On my homework it says write the ratios.Explain what your ratios show. Chocolate 6 vanilla 1 Strawberry 3

asked by nicole on April 14, 2011
86. ## Math

If there are 4 dice are rolled, what are the possibe outcome for the each event? Could you show me some example how to figure out the outcome? Pls help, Thank you.

asked by Plshelp on September 17, 2007
87. ## Math

Find the equation of a line that passes through the point (1, 2) and has a slope of 1/3. Show how you found the equation.

asked by Crystal on February 20, 2010
88. ## algebra

George has 25 marbles. he wants to divide them into two amounts hat show a ratio of 2:3 how many marbles are in each group?

asked by Katie on April 27, 2014
89. ## factoring,math

can someone show me how to factor this: i keep getting -6 and 5 but i want to factor: x^2+7x+6 x^2+7x+6 = (x+1)(x+6) This means the roots of x^2+7x+6 = 0 ar -1 and -6 duhhhhh...i was thinking completely wrong..thank you 75 75

asked by jas20 on February 25, 2007
90. ## chemistry

I need help. please show step by step? How many milliliters of 1.0 M NaOH would be required to completely neutralize 40.0 mL of 0.60 M HCl?

asked by Alex on March 20, 2017
91. ## Algebra II

Translate this equasion 2 units left and 4 units up: 9x^2+ 3x+ 10= 16y^2+ 154+ 3x please show me all of the steps. thank you

asked by Tina on May 23, 2011
92. ## Math

Express this function in vertex form by completing the square: 3x^2 - 4x + 1 PLEASE SHOW STEP BY STEP!!!

asked by Need Help on September 17, 2007
93. ## Calc or Pre calc

I am having trouble doing this problem. I know how to do indefinate integrals, but I don't know how to do definate integrals. Can you show me how to do this. Evaluate 5 (x^3-2x)dx 2

asked by jennifer on May 14, 2008
94. ## algebra

find the LCM of 15ef and 12e^4 (12e to the power of 4) Please show the steps. I do not understand how to do this.

asked by sally on May 4, 2013
95. ## english

please write a paragraph to show you comprehend what analogies and idoms are. use at least one analogy and one idom in the paragraph

asked by janice on July 19, 2012
96. ## math

Using the function y=x/4^x, show that the most simplified derivative is y′=(1−2xln(2))/4^x i dont understand how you get the 2xln(2) mine is ln(4)

asked by bobby on December 4, 2018
97. ## science/maps

On a topographic map, how would you show a hill with an elevation of 80 feet if the contour interval is 10 feet?

asked by linda on February 17, 2011
98. ## math

For the curve given by 4x^2+y^2=48+2xy, show that there is a point P with x-coordinate 2 at which the line tangent to the curve at P is horizontal.

asked by Steven on December 31, 2014