# 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 749
1. ## organic chemistry

the crossed aldol condensation of acetaldehyde with benzaldehyde is aided by the face that benzaldehyde bears no alpha protons however a possible competitive reaction is the self condensation of two molecules of acetaldehyde. slow addition of acetaldehyde

asked by ochemfreak on April 30, 2009
2. ## Physics

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using

asked by Sara on November 19, 2015
3. ## Physics

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using

asked by Sara on November 19, 2015
4. ## English

The author of “Hip-Hop Planet” describes the legend of the Great Rock of Toubab Dialaw in order to a. describe an image of hope that is similar to hip-hop.*** b. show the lack of education of the people of Toubab Dialaw. c. describe the setting of the

asked by Kaai97 on January 19, 2016
5. ## Statistics (Math 210)

Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I receive! :) According to a local chamber of commerce, in 1993, 5.9% of local area residents owned more than five cars. A local car

asked by Chris on December 4, 2016
6. ## Physics

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using

asked by Sara on November 19, 2015
7. ## prob and stats

A test is conducted in 22 cities to see if giving away free transit system maps will increase the number of bus riders. In a regression analysis, the dependent variable Y is the increase in bus riders (in thousands of persons) from the start of the test

8. ## Probability and statistics

Astronomers treat the number of stars in a given volume of space as a Poisson random variable. The density in the Milky Way Galaxy in the vicinity of our solar system is 1 star per 16 cubic light years. (a) What is the probability of 3 or more stars in 16

asked by Sarah on June 23, 2016
9. ## math

A test is conducted in 22 cities to see if giving away free transit system maps will increase the number of bus riders. In a regression analysis, the dependent variable Y is the increase in bus riders (in thousands of persons) from the start of the test

asked by Anonymous on December 9, 2009
10. ## algebra

One evening 1500 concert tickets were sold for the Fairmont Summer Jazz Festival. Tickets cost \$25 for covered pavilion seats and \$20 for lawn seats. Total receipts were \$35,000. How many of each type of tickets were sold? Let x equal the number of

asked by Anonymous on January 13, 2015
11. ## CRT 205- argument

Is this a correct evaluation of an argument, it's premise and conclusion? Thank you! The author states that “The disability rights movement has a long history of healthy skepticism toward medical professionals, and there's an established body of research

9. The author of "My Brother's Keeper" mainly develops Jamie’s character through his actions *dialogue and thoughts the narrators description other’s reaction to him 10. In "My Brother's Keeper," what does Ted want Jamie to do for him? Give him an

asked by Anonymous on September 15, 2015
13. ## SMU

A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed a mean purchase of \$5.29 with a standard deviation of \$3.02. For the October 26 evening showing of the same movie, for a sample of 25 purchases the mean was \$5.12

asked by carl on December 19, 2011
14. ## statistics

A sample of 25 concession stand purchases at the October 22 matinee of Bride of Chucky showed a mean purchase of \$5.29 with a standard deviation of \$3.02. For the October 26 evening showing of the same movie, for a sample of 25 purchases the mean was \$5.12

asked by Jennifer on March 1, 2010
15. ## calculus

let f be the function f(x) = x^3 + 3x^2 - x + 2 a. the tangent to the graph of f at the point P = (-2,8) intersects the graph of f again at the point Q. Find the coordinates of point Q. b. Find the coordinates of point R, the inflection point of the graph

asked by mary on March 23, 2010
16. ## slis

hi, im in the 9th grade and i need help I need help with my math. the following questions are? we are learning parallel lines and perpendicular lines. think you can help me? e) parallel to y=0 and passes through (1,2) f) perpendicular to x=-1 and passes

asked by shanen desir on April 2, 2010
17. ## math

x+b+2b+8(9-5b)(divide)9 x+b+2b+8(9-5b)(divide)9 You don't show clearly what is divided by 9;i.e.everything or just 8(9-5b). I will assume the equation is this. [x+b+2b+8(9-5b)]/9 First, clear the innermost parentheses. (x+b+2b+72-40b)/9 combine terms.

asked by Gina on October 12, 2006

put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry that

asked by billy on September 2, 2014

I put ** by the ones I thought correct Which of the following statements best describes the characteristics of a hypothesis, one of the steps of the scientific method? a)It is a possible answer to a scientific question *** b) It is a scientific inquiry

asked by billy on September 2, 2014
20. ## ms. sue

Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements

asked by could you check these on October 29, 2014
21. ## science

Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements

asked by could you check these on October 29, 2014
22. ## Science help ms sue.

Multiple Choice 1. Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? (1 point) comet asteroid dwarf planet planet 2. Which of the following statements

asked by josh on February 25, 2014
23. ## Restate Thesis

i realize this; i write them all the time. Last year i had to write an essay per week... that a lot of essays. =] Lady Macbeth and Ophelia are integral parts of these plays, yet they are polar opposites in characteristics and personality. I need a new way

asked by Alexx on June 28, 2007
24. ## Social Studies

They can be 2-5 paragraph essays, not looking for excellent work just easy essays to turn in...if i don't do these i dnt pass my senior year, this is make-up work from 10th grade .. Essays i need done: -Charcter analysis of an epic hero(essay and sketch).

asked by John on March 23, 2007
25. ## Spanish

It would be nice if someone could help me with this. This is what I'm working on: Command form(imperative mood)-plural I'm filling in the blanks with the polite plural command of the verb in parentheses:Ok. Now I actually did the work. Just please correct

asked by John on May 9, 2008
26. ## Science

what are some barriers to solve the zika virus problem? What are some possible solutions for zika virus problem? According to the off the podium article about zika virus. tnx a lot .

asked by Dj on August 31, 2016
27. ## calculus

solve the logarithmic equation. Be sure to reject any value of x that is not in the domain of the orginal logarithmic expression. In square root x+7=1 I get this far and then get stuck, can you help me? In square root x+7=1 e=square root x+7 e^2=x+7

asked by Heather on January 4, 2013
28. ## math{HELP HELP}

i don't understand these mmath equations. 1) 6y = 24 2)y / 7 = 2 y=_________ On number one i know that if there is a letter next to a number it means multiplication.and i still don't know how to solve it. On number two i don't understand anything at all:(

asked by elenny on March 31, 2009
29. ## Math

y^2=8(x-3) how would you get the coordinates. vertex = 3,0 then what? let x=1, or -1, and solve for y. This is a parabola, if you are graphing, you will need several points to plot. vertex = (3,0) using x = 2 (2,4) (2,-4) > +3 translation = (5,4) (5,-4) Is

asked by jim on November 2, 2006
30. ## Math

Please solve these word problem .tracy participated in a marathon,but managed to complete only 11/20 of the race.(a)what percentage of the marathon did she complete ?(b)what percentage of the marathon did she not complete?

asked by Tabassum sultana on February 15, 2019
31. ## Math

Logan saves \$5.50 in dimes and quarters over a week. He has 20 more dimes than quarters. Find the number of dimes and quarters he saves. How do I solve the problem algebraically?

asked by Samantha on September 23, 2014
32. ## MATH 208

There were 18,017 AIDS deaths in 2003, or 34.5% of the 1995 AIDS deaths. Determine the number of AIDS deaths in 1995. What formula who I use to solve this problem?

asked by Selena on June 23, 2011
33. ## algebra

Solve for x. (l is the absoulte bar, not one) 3*l 3x-2 l -6 > l 3x-2 l We're given; 3*|3x-2|-6 >|3x-2| Add -|3x-2| to both sides to get 2*|3x-2|-6 >0 Add 6 to both sides to get 2*|3x-2|>6 Divide both sides by 2 |3x-2|>3 This means 3x-2>3 or 3x-23 means 3x

asked by Megan on September 5, 2006
34. ## Chemistry

If a 0.1 mol/L solution is diluted to 0.01 mol/L, the: a) concentration of hydrogen ions increases b) pH decreases c) acidity constant decreases d) the acidity constant does not change I would think the ph decreases? no?

asked by scilover on May 20, 2013
35. ## Science

Hydrogen chloride is added to a buffer solution of ammonia, NH3, and ammonium chloride, NH4Cl. What is the effect on the concentration of ammonia? On the concentration of ammonium chloride?

asked by Nancy on March 11, 2008
36. ## Math

Amelia's soccer team won 3/4 of outgrew its games.The team won 18 games.How many games did the team play? Equation:3/4g=18 ,g is the total number of games. Possible solution: g=18×4/3,g is 24?

asked by Mary on January 9, 2015
37. ## math

A nurse wants to add water to 30 ounces of a 10% solution of benzalkonium chloride to dilute it to an 8% soultion. How much water nust she add?(hint water is 0% benzalkonium chloride)

asked by jessica on January 15, 2009
38. ## science

A student needs to mix 50 ml. of glycine with 950 ml. of distilled water. This student has only a 25 ml. graduated cylinder. How many times will the student have to use the cylinder both glycine and water to prepare the solution?

asked by BB on July 5, 2015
39. ## Algebra 1

A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Is this an example of a: random sample, systematic sample, self-selected sample, convenience sample, bipartisan sample, or

asked by Natalia on January 13, 2017
40. ## Vectors: Dot product

Given a and b unit vectors if |a+b|=square root 3, determine (2a-5b)dot(b+3a) First I foiled the whole thing: =2(a dot b)+ 6 (a dot a) - 5(b dpt b) -15(a dot b) =-13(a dot b) + 6(a dot a) - 5(b dot b) =-13(1)(1)+6-5 =-13+1 =-12 Textbook answer is -11/2 I

asked by MathHelp on February 7, 2015
41. ## Trigonometry

Google this: 5.1 using fundamental identities Comcast Click and open the first result that appears on your search (Result= PDF Document). Textbook pages will appear and go to page 383 on problem #129. The directions will mention "Solve the right triangle

asked by AwesomeGuy on February 10, 2013
42. ## Algebra

Hello! This is a question from my math practice worksheet, and I have no clue how to solve it. Any and all help is greatly appreciated! The table shows a hospital’s patient count for two successive days. Write a linear function using the data (with x

asked by Amy on June 11, 2014
43. ## Math

The cancer Society is holding three charity events. They hope the average attendee for the three events will be between 500 and 540, inclusive. The attendance for the first two shows was 480 and 540. What possible attnedence numbers for the third event

asked by Dong liAng on February 5, 2018
44. ## calculus-integration

integrate -2/xln^4(x)...plz help me..give me an idea on how to start..plz The derivative of the ln(x) function is 1/x and this is multiplying the ln^4(x). You can thus write the integral as: -2 * 1/5 ln^5(x) + constant. is that the answer? wut about the x

asked by Maria on May 7, 2007
45. ## Math

I am not exactly sure of what I'm supposed to do in the following question: Describe and correct the error, given the functions f(x)=3x - 5 and g(x)=1/3 - 4/3. The first equation is as follows: g(-3)= 1/3 - 4/3 (3) =1/3 - 4 = -3 2/3 The second equation is:

asked by Jessica on December 19, 2011
46. ## Math

A school is keeping track of the number of tickets remaining for its year-end festival. The table shows the number of sales for the first, second, third, and fourth weeks of the month leading up to the festival. Which graph could represent the data shown

The maximum wavelength of light emitted from a blackbody that will emit electrons from a given piece of metal is 255nm. What is the fraction of total energy emitted from the black body that emits electrons? I set up the integral:

asked by Tom on October 13, 2011
48. ## Math

A school is keeping track of the number of tickets remaining for its year-end festival. The table shows the number of sales for the first, second, third, and fourth weeks of the month leading up to the festival. Which graph could represent the data shown

49. ## Math

I have three math problems that I have tried to solve but I do not think they are correct. Can someone please help me! 1. What is the product of 225 and 507? I came up with 225 x 507 = 114075 2. Divide by moving the decimal point. 10.5 ÷ 100 I came up

asked by GODSCHILD on August 15, 2009
50. ## math

also, what formula would i have to use for this: Effective Rate An advertisement for E*TRADE bank boasted "We're ahead of banks that had a 160-yr start," with an APY (or effective rate) of 2.01%.* The actual rate was not stated. Given that interest was

asked by student on June 19, 2007
51. ## SAT Writing

I can't find the post regarding to the essay about "Nothing in the world can take the place of Persistence. Talent will not; nothing is more common than unsuccessful men with talent. Genius will not; unrewarded genius is almost a proverb. Education will

asked by Anonymous on August 28, 2013
52. ## algebra,help

I am clueless about this one...can someone help me with it ...thanks Business and finance. The demand equation for a certain type of printer is given by D = -200p + 35,000 The supply equation is predicted to be S= -6p^2 + 400p – 20,000 Find the

asked by jas20 on February 20, 2007
53. ## Re: chemistry

The average pH of open ocean water is 8.1. What is the maximum value of [Fe3+] in pH 8.1 seawater if the Ksp of Fe(OH)3 is 1.1*10^-36? chemistry - DrBob222, Friday, December 7, 2012 at 10:14pm Fe(OH)3 ==> Fe^3+ + 3OH^- pH = 8.1 pH + pOH = pKw = 14

asked by Brunette on December 8, 2012
54. ## Psychology

What are the stages of language production? Which one of these stages is the most crucial? Why? This is what I have thus far: Language production refers to the process involved in creating and expressing meaning through language. The four stages in

asked by Linda on September 5, 2011
55. ## Algebra

You plan to put a fence around a rectangular lot. The length of the lot must be at least 60 feet. The cost of the fence along the length of the lot is \$1.50 per foot, and the cost of the fence along the width is \$2 per foot. The total cost cannot exceed

asked by Dawn on October 30, 2011
56. ## English (Check)

List examples and details that show that the passages are firsthand historical narratives. 1. While the ships stayed, our allowance was somewhat bettered by a daily proportion of biscuit which the sailors would pilfer to sell, give, or exchange with use

asked by Victoria on February 21, 2016
57. ## Medical Codding and Billing

#1 You're an inpatient coder in a hospital. You've just coded a Medicare Part A record with a diagnosis-related group (DRG) reinbursement of \$12,000. You notic in the hospital's computer billing system that the patient's charges are \$19,500. That's \$7,500

asked by Kay on December 1, 2009
58. ## religious help

Okay here is my start for an essay. How does it look so far. Can somehow someone give me like an outline the points i should answer. I am not good in essays and i have no one to help me at home. these are the questions that i need to answer within the

asked by kailin on January 7, 2007
59. ## Math

1.Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in the following box plots: two box plots shown. The top one is labeled Males. Minimum at 1, Q1 at 3, median at 10.5, Q3 at 14,

60. ## math

1.Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in the following box plots: two box plots shown. The top one is labeled Males. Minimum at 1, Q1 at 3, median at 10.5, Q3 at 14,

asked by anonymas on February 15, 2016
61. ## Math and are my answers correct

1.Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in the following box plots: two box plots shown. The top one is labeled Males. Minimum at 1, Q1 at 3, median at 10.5, Q3 at 14,

asked by kayla on February 15, 2016
62. ## Math

1.Male and female high school students reported how many hours they worked each week in summer jobs. The data is represented in the following box plots: two box plots shown. The top one is labeled Males. Minimum at 1, Q1 at 3, median at 10.5, Q3 at 14,

asked by Caroline on February 22, 2016
63. ## BioChem

1.Suppose you had a buffer containing 0.5 moles of sodium monobasic phosphate and 0.5 moles of sodium dibasic phosphate. How many moles of hydrochloric acid would this phosphate buffer be able to accept before the pH of the solution began to change

asked by Zaac on September 4, 2015
64. ## Programming

Design a program in pseudocode that calculates the amount of money a person would earn over a period of time if their salary is one penny the first day, and then doubles each day. The program should ask the user for the number of days. Display what the

asked by Anonymous on May 19, 2010
65. ## Pre-Calc

A page that is x inches wide and y inches high contains 30 square inches of print. The margins at the top and bottom are 2 inches and the margins on the side are 2 inch wide. A. show that the total area A on the page is A=2x(2x+7)/(x-4) B. determine the

asked by Anonymous on January 20, 2015
66. ## Chem 2

Imagine that a deposit of helium gas has been discovered in Antarctica. It is being shipped to Australia in a rigid (constant volume) tank with a rated max pressure of 100 atm. If the tanks are filled to a pressure of 75 atm in Antarctica on a day when the

asked by Staci on February 23, 2010
67. ## math

Uniform rod AB with end B resting against rough vertical wall. Coefficient of friction between wall and rod is μ. Rod is 2m long and has mass 3kg. Rod is kept in limiting equilibrium by a light inextensible string, one end of which is attached to the end

asked by Michael on April 23, 2014
68. ## public health

Review this artile: Hutt, J. & Wallis, LA. (2004). Injuries caused by airbags: a review. Trauma, 6, 271-278 and answer following: How did the researchers use the literature to explain a public health phenomena? How was the literature used to show the

asked by Kim on December 25, 2008

Review this artile Hutt, J. & Wallis, LA. (2004). Injuries caused by airbags: a review. Trauma, 6, 271-278 and answer. • How did the researchers use the literature to explain a public health phenomena? • How was the literature used to show the

asked by Kim on December 25, 2008
70. ## English

1. Why would you do research to prepare for a personal comparison and contrast essay? A. To find additional examples to support you main idea. B. To find people to interview from your family. C.To find references for your essay. D. To evaluate websites. 2.

asked by HELPPME on November 1, 2016

I'm very confused with what I'm learning about right now. We are kind of talking about slopes, functions, graphs, etc. Today, my teacher taught about midpoint and distance, and did not explain very well at all. Would someone please explain to me how to

asked by Celina on December 10, 2008
72. ## science

what is the number of cycles an oscillator completes in one second is known? what is a force that always acts to pull a system back toward its equilibrium position? what is the distance from one point on a wave to the same point in the next cycle of the

asked by arianna on March 9, 2016
73. ## Physics

In a popular amusement park ride, a cylinder of radius 2.19 meters is set in rotation at an angular speed of 5.09 rad/s. The floor then drops away, leaving the riders suspended against the wall in a vertical position. What minimum coefficient of friction

asked by Kendra on April 28, 2008
74. ## nursing evidence

_ _ _ _ _ _ _ _ _ 1. Information used to conduct our lives _ _ _ _ _ _ _ _ _ 2. To solve a problem by collecting the necessary pieces of information and putting them together _ _ _ _ _ AND _ _ _ _ _ 3. Try several approaches until one works _ _ _ _ _ _ _ _

asked by jennifer on September 12, 2011
75. ## Chemistry

Solutions of NiSO4(aq), Al2 (SO4)3 (aq), CoSO4 , and SnSO4 (aq) are in bottles labelled A, B, C, and D. a) Design an experiment to identify which ionicsulfate solution is in which bottle. Give a list of equipment and chemicals required. Describe a

asked by Sky on February 18, 2014
76. ## chemistry

The reaction of calcium bicarbonate, Ca(HCO3)2 with hydrochloric acid, HCl, produces a solution of CaCl2, gaseous carbon dioxide, CO2, and water, H2O. Write a balanced chemical equation for this reaction and determine the volume of CO2, in mL, that forms

asked by terria on July 20, 2011
77. ## Biology

Father has red/green color blindness and is a hemophiliac. Mother is normal. Have two female children (Both are probably carriers). One female offspring marries a normal male. The question is what is the probability that their son is both color blind and

asked by Frank on October 14, 2013
78. ## chemistry

This equation decribes oxidation of acidified solution of sodium oxalate(Na2C2O4) by potassium permanganate(KMnO4): 5 C2O4^2- + 2Mn04^- + 16H2SO4 to produce 10Co2 + 2Mn^2- + 16HSO4^- + 8H2O. what volume of 0.127M sodium oxalate in sulphuric acid will react

asked by Temmick on February 6, 2014
79. ## Economics

3. Peter owns just his car and has £2,500 in cash. The car is worth £7,500. The probability that the car will be stolen (and never recovered) is 0.1. If his vNM utility function is two times the square root of his wealth, what is the maximum amount he

asked by Susan on December 5, 2009
80. ## chemistry

When 0.712 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 116C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to significant

asked by wilson on May 18, 2009
81. ## chemistry

A sample of solid monoprotic acid with molar mass equal to 169.7 g/mol was titrated with 0.1599M sodium hydroxide solution. Calculate the mass in grms fo acid to be used if the volume of NAOH to be used is 25ml. My calculation 0.1599 x 0.025L = 0.00399

asked by Fai on August 4, 2012
82. ## chemistry HELP!!

Reaction Rate = -(1/2) [d(H2O2)/dt] = [d(O2)/ dt] Using 25 mL of a 0.2 M hydrogen peroxide solution, the following results are obtained from the equation above: 8.62 mL of gas is collected in 120 seconds. (Assume 760 Torr = 1 atm) Room temperature is 25

asked by Aaron on September 21, 2015
83. ## Chemistry

Lake VIda is an enormous hypersaline lake that lies under 19 m of ice in the Dry Valleys region of Antartica. The freezing point of this water is approximately -15.0 degrees C, owing to the fact that it is many times as salty as typical saltwater.

asked by Shea on October 18, 2010
84. ## Chem 1LB

When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to

asked by Libit on February 21, 2010
85. ## Chem 1LB

When 0.678 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 11.0C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to

asked by Libit on February 21, 2010
86. ## math

A vampire could have the ability to infect an entire planet if he bit 2 people each day. Those 2 people would bite 2 people the next day, and then all of those vampires would each bite 2 people the next day, and so forth... How would I solve this to find

asked by joe on September 17, 2012
87. ## Math

Jonah and his friends go apple-picking Jonah fills 5 baskets each basket holds 15 apples if 4 of Jonah's friends same amount as Jonah how many apples did Jonah his friends pick in all draw a diagram to solve the problem

asked by Angelina on September 27, 2016
88. ## Math

Write the equation and solve the following problems 1. Seven more then three times a number is 22. What is the number? 2. One half a number diminished by six is 14. What is the number? 3. The sum of two consecutive numbers is 131. What are the numbers. 4.

asked by Mileena on April 3, 2017
89. ## science

how the earth rotates by itself? Momentum imparted to it million of years ago when the solar system formed. One theory involves glancing collision with a large asteroid millions of years ago that also broke off material that eventually developed into the

asked by shourie on November 27, 2006
90. ## Microeconomics

Suppose you are a painter, and the price of a gallon of paint increases from \$3.00 a gallon to \$3.50 a gallon Your usage of paint drops from 35 gallon a month to 20 gallons a month. Perform the following Compute the price elasticity of demand for paint and

asked by Michelle on September 3, 2011
91. ## math

supplies on invoice are 4 bottles alcohol @ 2.25 each = 9.00 3 thermometers @ 1.95 each = 5.85 6 boxes cotton @ .29 each = 1.74 6 bottles mouthwash @ .89 = 5.34 11 crtns cotton swabs @ .39 each = 4.29 3 hypo needles @ .39 each = 1.17 Dr. receives 3% disc,

asked by JOHNSON on May 9, 2010
92. ## IB Physics

a wind turbine has a power output p when the wind speed is v. The efficiency of the turbine does not change. What is the wind speed at which the power output is p/2 I know the answer is v/cube root of 2 but I don't know how to get that answer. Can you show

asked by Josh on January 22, 2019
93. ## calculus

A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a. Let f(x)= x2+10x+26 2 −x2−10x−24 if

asked by maggie on February 7, 2011
94. ## A proof question

Suppose 32 = alpha*beta for alpha, beta reatively prime quadratic integers in Q[i] . Show that alpha = epsilon*gamma^2 for some unit epsilon and some quadratic integers gamma in Q[i]. If you know how , please do teach me . Thank you .

asked by kate on November 15, 2006
95. ## chemistry

Which of the following solutes dissolved in 1000 g of water would provide a solution with the LOWEST freezing point? A. 0.030 mole urea, CO(NH2)2 B. 0.030 mole acetic acid, CH3COOH C. 0.030 mole ammonium nitrate, NH4NO3 D. 0.030 mole calcium sulfate, CaSO4

asked by random on June 20, 2010
96. ## chem plzzz help

okay so im doing pre lab questions on reaction rates I have a chart labeled effects of varying concentration in reaction #1 flask A contains 7.50mL of .200 M KI , none of .20M KCI, 5.00 mL of .0050 M S2O3^2-, 1 drop of starch. Flask B contains 7.5mL of

asked by Anna on February 15, 2009
97. ## Intermidiate Algebra

Andrew factored the expression -12x^3-28x^2-3x as -4x (3x^2-7x+9). But when Melissa applied the distributive law and multiplied out -4x (3x^2-7x+9), she got -12x^3+28x^2-36x; thus, Andrew’s solution does not appear to check. Why is that? Please help

asked by Elisa on June 19, 2011
98. ## CHEMISTY HELP!!!

A professor found that there are 109 drops of glacial acetic acid in 2.00 mL. Calculate the number of drops of glacial acetic acid, HC2H3O2 required to make 155 ml of 0.25 M acetic acid solution Can anyone walk me through the steps and provide an answer.

asked by Sam on October 21, 2011
99. ## math

Sam kicks a ball horizontally along a deck that is 5 m above the ground. The ball goes off the edge of the deck. A model for the path of the ball once it leaves the deck is a parabola. The equation of the parabola is y = ax^2+ bx + c. The ball hits the

asked by James on August 23, 2011
100. ## Calculus...

How can I use the "angle addition formula" and the formula "limit of x approaching 0 of sin(x)" to show that the limit of x approaching 0 sin(a+x) = sin(a) for all a?

asked by Shelli on September 20, 2007