1. math

    (a) Complete the square by writing in the form . Note: the numbers and can be positive or negative. x^2-14x-17=(x-7)^2+ (b) Solve the equation by completing the square or using the quadratic formula. If there is more than one correct answer, enter your

    asked by Anonymous on September 6, 2012
  2. Circuits and electronics applications3

    Consider the second order low pass filter circuit shown below. The differential equation associated with the input voltage vi(t) and the output voltage vo(t) of this system can be written in the following form: A⋅d2vodt2+B⋅dvodt+C⋅vo=vi Where the

    asked by sengeni on November 25, 2016
  3. Chemistry

    Ammonium carbonate decomposes upon heating according to the balanced equation: (NH4)2CO3(s) -> 2NH3(g)+CO2(g)+H2O(g) Calculate the total volume of gas produced at 27.0 degrees C and 2.03 atm from the reaction of 1.4kg of (NH4)2CO3. What is the pressure of

    asked by Stephanie on December 3, 2015
  4. Math Max min problems

    The power P delivered to a load by a current of i amperes through a resistance of 19 ohms, when 110 volts are supplied at one end of the line, is given by the formula P = 110i - 19i2 . Determine the maximum power that can be delivered. maximum power in

    asked by Ashley on January 29, 2013
  5. chemistry

    Covalent bonds are formed when two atoms share electrons. The pairs of electrons which are shared between atoms and hence number of covalent bonds, can be represented by the number of lines drawn between the symbols for the atoms. For example, a single

    asked by trigger on December 30, 2008
  6. Algebra

    Please help me to to solve this quadratic equation word problem. Here is the question: Studying Microgravity. NASA'S Glen Research Center in Cleveland, Ohio, has a 435-foot drop tower that begins on the surface and descends into Earth like a mineshaft. How

    asked by lpcruz on December 5, 2014
  7. Math

    I need help with these problems for a test. 1. Find the inverse of the one-to-one function. f(x)=5x+1/4. 2. The height of the water, H, in feet, at a boat dock t hours after 7 am is given by E=7+4.4cos pi/35 t, where t is time measured in seconds. Find the

    asked by David on June 14, 2010
  8. Chemistry

    15.00g of ammonium nitrate decomposes into an expandable container acoording to the following equation. 2NH4NO3 ==> 2N2 g + 4H2O g + O2 g which has the highest partial pressure a. N2 b. H2O c. O2 i am not sure how to approach this problem. is there a

    asked by Anonymous on October 4, 2016
  9. Pre-Algebra

    P.S - I really need help please help me with this, please i try and still i can not do this please!!!!!! :( :( :( :( :( The table below shows the percentage of households that own a microwave in different countries. Construct a stem-and-leaf plot of the

    asked by HI, I'M NEW HERE SO I NEED HELP CAN'T DO THIS ! :( on March 21, 2013
  10. engineering ecnonmics

    By installing some elaborate inspection equipment on its assembly line, the Robot Corp. can avoid hir- ing an extra worker who would have earned $36,000 a year in wages and an additional $9500 a year in employee benefits. The inspection equipment has a

    asked by Anonymous on September 30, 2014
  11. Accounting-- any comments please

    If someone can at least write up one comment for one of the posts based on what the teacher wants so I can use that as an example to write the other and for future posts, that would be greatly appreciated. I tend to only earn Bs because of my lack of

    asked by Anonymous on August 7, 2006
  12. To Dylan - re English essay

    To repeat your assignment: "In a five-paragraph essay, discuss which author was more successful in creating a good piece of literature. Use examples from both books to explain your thinking." And the rubric... The Student demonstrates an understanding of

    asked by Writeacher on July 15, 2008
  13. math

    In Chicago, the tax on a property assessed at $550,000 is $7,700. If tax rates are proportional in this city, how much would the tax be on a property assessed at $920,000? write a proportion to solve the question.

    asked by kelly on February 25, 2013
  14. math

    Shane takes a big cube of butter with side length x from the fridge. He then cuts out a little cube of side length y from one of the corners of the cube. Write an expression that describes the remaining volume of butter.

    asked by sarah on December 2, 2014
  15. Story problem

    A group of 52 people attendance ball game. There are three times as many children as adults in the group. Write a system of equations that you can use to solve this problem where a is the number amd C is the number of children in the group. How many

    asked by Taylor on February 17, 2014
  16. Help Please Edu

    The major purpose of an interdisciplinary team is to: a.take turns caring for a child with special needs b.determine the best ways to help a child with special needs learn. c.determine how to discipline a child with special needs d.write reports about the

    asked by marie on February 18, 2013
  17. Biology

    I have to write an essay with knowledge about the following: the biochemical structure of DNA, how DNA replicates, how the DNA structure forms the genetic code, and how that genetic code comes to be expressed as a phenotype. If I could get some help or a

    asked by Emma on October 31, 2018
  18. Function Notation

    Ive been shown that a function can be written like so f:X->Y,f(x)=rule where X is the Domain and Y, the co-domain. Firstly, what is the co-domain? Ive tried looking it up but all I get is "the set of which y values fall in". If that is the case, say for

    asked by Mikal on April 16, 2008
  19. Problem solving

    A group of 52 people attendance ball game. There are three times as many children as adults in the group. Write a system of equations that you can use to solve this problem where a is the number amd C is the number of children in the group. How many

    asked by Taylor on February 17, 2014
  20. Trigonometry

    Use a sum of difference identity to write the expression as a single function theta: cos(theta - pi). Okay so I know we will use cosAcosA+sinBsinB I got: cos(theta)cos(theta)sin(pi)sin(pi) I don't know how to solve from here and I'm not sure if that is

    asked by Abby on February 29, 2016
  21. Eng

    Which statement is most accurate regarding the speaking-writing connection? A. To own a word, write it over and over again. B. Written words seldom reflect the words people use when they speak. C. To own a word, speak it. D. The words used by writers are

    asked by Jen on June 9, 2013
  22. algebra

    roger is 5 feet tall and casts a shadow 3.5 feet longer. at the same time,the flagpole outside his school casts a shadow 14 feet long. write and solve a proportion to find the height of the flagpole.

    asked by masruja on November 1, 2015
  23. maths

    1. If the first and third of three consecutive odd integers are added, the result is 51 less than five times the second integer. Find the third integer. 2. Write as a subtraction problem and evaluate. 15 less than -2 n, n+1, N+2, ... are consecutive

    asked by francis on October 12, 2006
  24. computer science

    write a program that asks for the starting time and minutes of the call, and displays the charges. the program should ask for the time to be entered as a floating-point number in the form HH.MM. for example, 07:00 hours will be entered as 07.00, and 16:28

    asked by josh on March 10, 2010
  25. Math

    At the potluck , there were 6 pecan pies, 7 lemon pies, 13 cherry pies, and 8 apple pies. Find the ratio of apple pies to the total number of pies. Write the ratio in simplest form. Then explain its meaning.

    asked by Mia on October 24, 2011
  26. Geometry proportions in triangles

    1. What similarity statement can you write relating the three triangles in the diagram? A. UVW~UWT~WVT B. UVW~ WUT~WVT C. WUT~ VUW~WVT D. TWV~ WUV~UWT 2. What are the values of A and B? A. a=9/2, b=15/2 B. a=15/2, b= 9/2 C. a=16/3, b=15/2 D. a=9/2, b=13/2

    asked by Idkkk on March 17, 2017
  27. english

    Write a paragraph about the country you chose to present. The paragraph should have an introduction and conclusion and explain why you chose the country, what you found most interesting, information that surprised you and any other relevant

    asked by fatima on March 2, 2012
  28. math

    Avery is playing darts. So far, she has hit the bullseye 5 times and missed the bullseye 45 times. What is the experimental probability that Avery will hit the bullseye on her next toss? Simplify your answer and write it as a fraction or whole number.

    asked by Anonymous on March 7, 2016
  29. Computer/Math

    In an examination five pass grade and one fail is awarded a. For mark between 70 and 100 b. For mark between 60 and 69 c. For mark between 50 and 59 d. For mark between 45 and 49 e. For mark between 40 and 44. Write a program to input an mark for a student

    asked by Tosin on September 22, 2015
  30. Math

    For problems 1 and 2, determine how many solutions there are for each triangle. You do not have to solve the triangle. 1. A = 29°, a = 13, c = 27 2. A = 100.1°, a = 20, b = 11 For problems 3-6, solve each triangle using the Law of Sines. If there is no

    asked by Tabitha on January 13, 2011
  31. 7th grade English

    So I have a essay due tomorrow and it is The difference oF the book and the movie The Outsiders but I have no clu wat to write i havent read the book in a month I wanna if anyone can remind wat is one difference between the book and movie.

    asked by Payton on February 4, 2010
  32. algebra

    Using the rational zeros theorem to find all zeros of a polynomial The function below has at least one rational zero. Use this fact to find all zeros of the function g(x)=5x©ù-28©ø-48x©÷-8x+7 if more than one zero, separate with commas. Write exact

    asked by Pat on October 17, 2015
  33. Math Word Problem Help

    Your high school is having a spring carnival. Admission into the carnival is $3 and each game inside the carnival costs $.50. Write an inequality that represents the possible number of games that can be played having $20. What is the maximum number of

    asked by Betty Anne on February 11, 2013
  34. Math

    You and your friend need to graph quadratic functions of the form y =ax^2 and y =ax^2 + c. Your friend asks you to write some hints to help her graph these types of equations. a. Explain the role of a. b. Explain the maximum and minimum. c. What is the

    asked by Ugly Bob on April 18, 2019
  35. Math please help!

    invested 2000 gains 0.2 every odd numbered month gains 0.15 every even numbered month write function for n months? i've tried solving this with a formula, but every formula i come up with is wrong. Could someone tell me how to solve this and plug in the

    asked by Amy on September 5, 2011
  36. Eng

    Which statement is most accurate regarding the speaking-writing connection? A. To own a word, write it over and over again. B. Written words seldom reflect the words people use when they speak. C. To own a word, speak it. D. The words used by writers are

    asked by Jen on June 25, 2013
  37. Statistics

    1. Find the indicated probability. In a survey of 300 college graduates, 63% reported that they entered a profession closely related to their college major. If 9 of those survey subjects are randomly selected without replacement for follow-up survey, what

    asked by Snotunicorn on May 10, 2019
  38. math

    what is the factorial of a negative number? The factorial function has singularities at the negative integers. You can see this as follows. For integers we define: (n+1)! = (n+1)n! and we put 0! = 1 So, from 0! you can compute 1! and from that you can

    asked by chris on July 10, 2007
  39. English

    I've asked myself THE question over and over again. When on Earth am I going to write something in English class that somebody would actually want to read other than the teacher? Throughout my school carrer I've been wandering this and began hating

    asked by Y on July 6, 2008
  40. critical thinking

    Could someone double check my answers for me? Thank You! 2.) “Right. George Bush ‘won’ the election in 2000, didn’t he?” the use of quotation marks around “Won” has the effect of a a. Weaseler b. Dysphemism c. downplayer d. rhetorical

    asked by Becka on July 13, 2012
  41. chemistry

    Suppose 3.50g each of sulfamic acid and sodium nitrite were allowed to react together. What would be the theoretical yield, in moles, of N2. Equation: NaNO2 + NH3SO3 -> N2 + H2O + NaHSO4 Notes: The theoretical yield of N2 can be calculated from the amounts

    asked by Failure on November 9, 2015
  42. Physics

    The waves from a radio station can reach a home receiver by two paths. One is a straight-line path from transmitter to home, a distance of 21.0 km. The second path is by reflection from the ionosphere (a layer of ionized air molecules high in the

    asked by Stacey on November 26, 2010
  43. Trig

    From a point 120 feet from the base of a plant building the angle of elevation to the roof line of the building is 38 degrees. The angle of elevation to the top of an antenna is 43 degrees. The antenna is attached to the nearest edge of the roof and the

    asked by Dan on October 24, 2012
  44. College Math

    For questions 1-2, apply the quadratic formula to find the roots of the given function, and then graph the function. 1. f(x) = x2 + 4 (6 points) g(x) = x2 - x – 12 For questions 3-4, factor the quadratic expression completely, and find the roots of the

    asked by jennie on December 12, 2010
  45. Accounting

    Sierra Company is considering a long-term investment project called ZIP. ZIP will require an investment of $121,200. It will have a useful life of 4 years and no salvage value. Annual revenues would increase by $79,180, and annual expenses (excluding

    asked by Francesca on July 15, 2012
  46. ms.sue 5 grade math

    In 24 hours, one set of twins drank 16 bottles of formula. Each bottle holds 4 fl oz. How many cups of formula did the twins drink? (1 c = 8 fl oz) A. 8 cups B. 7 cups C. 6 cups D. 5 cups my son write a (D)but i think is (A)

    asked by dw on March 28, 2012
  47. Algebra- please help answer

    Ursula wrote the sum of 5.815 plus 6.021 as a sum of two mixed numbers? A. What sum did she write? B. Compare the sum of the mixed numbers to the sum of the decimals? Please help answer ASAP. Thanks

    asked by Ms. Liz on October 9, 2014
  48. science

    these are my homework questions can you answer any???there are 4 1 A pupil placed some magnesium in a gas jar of oxygen How could the rate of reaction between these substances be increased 2 Complete the word equation for the reation magnesium and oxygen 3

    asked by lauren on November 29, 2006
  49. Inverse trigonometry

    Solve the equation tan^-1(under rootx^2+x)+sin^-1(under rootx^2+x+1)=pi/2 Where tan^-1 inverse of tan

    asked by Ash on April 8, 2018
  50. algebra

    find the variation constant and an equation of variation where y varies directly as x and y=35 when x=5 the variation constant is k=

    asked by karon on December 13, 2011
  51. Math

    How many real number solutions does the equation have? 0 = - 4x^2 + 7x -8 a. no solution***** b. one solution c. two solutions d. infinitely many solutions

    asked by Anonymous on March 26, 2018
  52. add maths

    A point moves such that its distance from point A(1,0) is twice its distance from B(-2,0).Find the equation of the locus of the point.

    asked by mandy on June 14, 2014
  53. CHemistry

    When O2 reacts with C2H6, according to the equation: 2 C2H6 + 7 O2 = 4 CO2 + 6 H2O, how much CO2 is produced from 60.0 g of C2H6?

    asked by Anonymous on December 7, 2011
  54. math

    For what value of k does the equation x2 + kx + 9have: Two distinct real roots One real root No real root

    asked by A on March 6, 2019
  55. Math, Please Help!!!

    How can the right equation be converted into the answer on the left? (sec^4x)(tan^2x)=(tan^2x + tan^4x)sec^2x

    asked by Misty on October 26, 2011
  56. Pre calculus

    For the equation 2x^2-5x^3+10=0 find the number the number of complex roots and the possible number of real roots.

    asked by Kelly on June 23, 2014
  57. Chem.

    in the equation Ba(NO3)2(aq)+Na2SO4 (aq) →BaSO4(s) + Na2(NO3)2 .......is Na2(NO3)2 aqueous?

    asked by Anonymous. on April 29, 2014
  58. Chemistry

    Here's one last equation I can't balance: Al{subscript 2}(SO{subscript 4}){subscript 3} + ZnCl{subscript 2} -> AlCl{subscript 3} + ZnSO{subscript 4} Please help, and thanks again.

    asked by Anonymous on October 13, 2008
  59. math

    5 apples costs 7 kg. Let x be the cost of 7 apples, make an equation to find out the cost of 7 apples

    asked by don on February 17, 2017
  60. PHYSICS

    1. What is the weight of a 2.88 kg snake? 2. A girl drops a rock straight down from a bridge. Assume negligible air resistance. How fast is it going 4.0 s later? 3. A rock with a mass of 22.45 kg is falling from a tall tower. a. What is the Net Force if

    asked by Hayden on December 21, 2012
  61. Math

    Jackie earns a base pay of $3000 a month at her sales job. Jackie also gets a 15% bonus on all monthly sales. To make sure she can pay her bills for the upcoming month, Jackie needs to earn at least $4200. Write an inequality to represent this situatio

    asked by Anonymous on June 5, 2016
  62. Social Studies 9

    I have to write a pamphlet for my teacher, the pamphlet is on Charles the First, in the view of Walter Prynne. How am i supposed to do this? My teacher never explained how. she just said to do it and gave us a sheet that said basically what she had said,

    asked by Shania on February 14, 2012
  63. math

    Show how to write and evaluate an expression to represent and solve this problem: Jeff and his friend each text four classmates about a concert. Each classmate then texts four students from another school about the concert. If no one receives the message

    asked by kyle on February 10, 2015
  64. algebra

    a large group of students want to go to the movies. if the students take 3 vans and 1 car they can transport 22 people. if they take 2 vans and 4 cars. they can transport 28 people.write and solve a system of equations to find the number of people that can

    asked by kayla on December 4, 2012
  65. Math

    Three friends go to their favorite seafood restaurant for dinner. They decide to order a crab cake appetizer. When it arrives there are only 2 crab cakes. What fraction of a crab cake will each friend get to eat? 3/2 Write the fraction as a decimal rounded

    asked by Alan on November 14, 2013
  66. criminal justice communication

    I was assigned a paper to write against police stun guns and patrol car video surveillance. I have found some good sites and article on Police stun gun But I have not been able to find any information against Police Video Surveillance any help or

    asked by RAY on February 7, 2008
  67. Programming Java

    I am learning Java in programming right now. I need to write a program that should have an output like this: The program says "Type ten names". Then ten names sould be typed a person. Then the program chooses a random name from the list and displays it on

    asked by Valerie on November 16, 2017
  68. Math

    Jill ,meg and beth are sisters.jill is 2 years younger than meg.beth is half as old as meg.let m represent megs age.write two other algebraic expressions based on this situation.tell what each expression represents,and what the variable stands for in each

    asked by Cierra Austin on August 24, 2016
  69. Psychology

    I have to write an essay on a psychology concept and I was thinking about writing my essay on the concept of conformity. However, my professor prefers that we use media examples that occurred after the 28th of January. This example is to be used to explain

    asked by Sally on April 16, 2018
  70. To:Writeacher

    Can you write you real name when you go to POST A NEW QUESTON IN THIS WEBSITE? Like I mean I click on POST A NEW QUESTION I put my name and the subject. I COME TO THIS WEBSITE FOR HOMEWORK HELP. WHO IS WRITEACHER? IS WRITEACHER A TEACHER? I JUST READ HER

    asked by Sanjana on December 25, 2006
  71. English

    Write the possessive noun. 1. (Water) three states are solid, liquid and gas>. Answer: Water's 2. (Wells)novel The Time Machine is a classical. Answer: Wells 3. (Julius) stopwatch clocked Mia at a record speed. Answer: Julius

    asked by Kimmy on December 17, 2016
  72. Math

    Need help on if the sample given is random or not random. The first 50 nurses at a nursing convention write their names on slips of paper and place them in a drawing box. After the box is shaken, 20 names are pulled from the box and each person chosen

    asked by Brandi on August 28, 2013
  73. algebra 1

    the french club is sponsering a bake sale. they spent $77 in supplies. if their goal is to raise at least $140 how many pastries must they sell at $3.50 each in order to meet the goal. write and solve an inequality. a. 140p-77≥ 3.50;p≥ 0.5 b.

    asked by hips on April 25, 2013
  74. Algebra 1

    To train for a race, Will begins by jogging 11 minutes one day per week. He increases his jogging time by 5 minutes each week. Write the general term of this arithmetic sequence, and find how many whole weeks it takes for him to reach a jogging time of one

    asked by brad on March 7, 2011
  75. world history

    The Mongols have a terrible reputation in history as pillagers who destroyed all that met their path. How does this depiction of the Mongols compare with the same people who brought the Pax Mongolia? i don't understand what this question is asking me to

    asked by mel on September 22, 2011
  76. Finance

    I need to write an essay on if I think producing more money will help or hurt my local economy. The essay needs to clearly state the reasons behind my theory on how much money I should produce for my economy. It also needs to have one internet site that

    asked by Tom on September 18, 2010
  77. Language Arts...Help please!

    Could someone help me please. Select one of the following three types of organization: -cause-and-effect -chronological -comparison-and-contrast Then, using your selected mode of organization, write a paragraph on a topic you select yourself. Choose a

    asked by Mason on December 7, 2015
  78. math

    Write the answer to the problem as an algebraic expression. A theater ticket for adults is a dollars and the price of a child's ticket is C dollars. If 29 adults and 45 children attend the theater one night, how much money did the theater make? 29a + 45c

    asked by candy on July 12, 2011
  79. Math Functions

    Kool Klothes has determined that the revenue function for selling x thousand pairs of shorts is R(x)=-5x^2 + 21x. The cost function C(x) =2x +10 is the cost of producing the shorts. Write a profit Fumction How many pairs of shorts must the company sell in

    asked by Autira on March 8, 2015
  80. math

    Show how to write and evaluate an expression to represent and solve this problem: Jeff and his friend each text four classmates about a concert. Each classmate then texts four students from another school about the concert. If no one receives the message

    asked by kyle on February 11, 2015
  81. Chemistry

    I have realized I don't understand Avagado's number at all My book shows me this diagram instead of just providing a simple formulas that makes no sense at all here is what I have made sense of so far (6.022 x 10^23 atoms/mol)(mass of element) = molecular

    asked by Kate on July 3, 2010
  82. Math

    Let A(2,3) be a fixed point. A point P moves such that PA is equal to the distance of P from the y-axis. Find the equation of the locus of P PA2 = (x-x1)2 + (y-y1)2 +??? = (x-2)2 + (y-3)2 +??? I tried solving it using the distance formula but I'm still

    asked by Nye on September 6, 2016
  83. Math

    Let A(2,3) be a fixed point. A point P moves such that PA is equal to the distance of P from the y-axis. Find the equation of the locus of P PA2 = (x-x1)^2 + (y-y1)^2 +??? = (x-2)^2 + (y-3)^2 +??? I tried solving it using the distance formula but I'm still

    asked by Nye on September 6, 2016
  84. Chemistry

    A 8.71 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If 25.0 mL of 0.388 M barium hydroxide are required to neutralize the hydroiodic acid, what is the percent by weight of hydroiodic acid in the mixture? I

    asked by Hannah on November 20, 2011
  85. Physics

    How do I find out how much heat it takes to raise the temperature of 100 grams of aluminum from 50 degrees celcius to 80 degrees celsius. The specific heat is 900j/kg First I did 100*30*900 and it equalled 2,700,000. that seems to high, is it? I then

    asked by Carissa on June 27, 2010
  86. Maths B question - population

    The population P of a particular city, Metropia, is growing at a rate proportional to the current population. The population at time t years is modelled by the equation P = Aekt where A and k are constants. (a) With the aid of appropriate examples, explain

    asked by Nina on July 28, 2012
  87. chemistry

    In an experiement 23.4 g of iron sulphide are added to excess oxygen and 16.5 grams of iron (III) oxide, Fe2O3 are produced the balanced equation for the reaction is 4FeS + 7O2 -- 2Fe2O3 + 2SO2 Calculate the percent yield of iron oxide in the experiement

    asked by Kelsey on July 27, 2010
  88. physics plz help

    I need help in calculating work. following quantites are given. * G: 6.67E-11 *Mass of earth:5.98E24 *mass of satelightt:80kg *x(initial) center of the earth-7E6 m *x(final) center of the earth 12E6 m How do I make integral equation I need use 20 interval

    asked by jenny on April 7, 2014
  89. Precalculus

    Whats the value of a? =-= For the graph, determine the equation of the function in the form y=a(x-h)^2+k. Then describe the transformations that were applied to y=x^2 to obtain the graph. Here is the graph: imgur dot com/A7e5M The only thing I know is

    asked by Melinda on December 11, 2011
  90. Algebra

    A trebuchet launches a projectile from a hilltop 30 feet above ground level on a parabolic arc at a velocity of 40 feet per second. The equation h = −16t2 + 40t + 30 models the projectile's h height at t seconds. How long will it take for the projectile

    asked by Spring Allergies on April 25, 2019
  91. Chemistry

    Phosphorus pentachloride decomposes according to the chemical equation PCl5(g) -----> PCl3 (g)+ Cl2(g) Kc= 1.80 at 250 degrees C A 0.206 mol sample of PCl5(g) is injected into an empty 3.30 L reaction vessel held at 250 °C. Calculate the concentrations of

    asked by Katherine on September 30, 2013
  92. Cryptography

    I have to find the deciphering multiplier for a multiplication cipher given, Cq=Pi so q goes to i / 17 goes to 9 I plugged it into the equation 17a = 9(mod 26) then solved using the inverse of 17 to reduce so 23 (17)a = 23 (9)(mod 26) this left me with

    asked by Victoria on September 27, 2015
  93. Chemistry

    In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to

    asked by lisa on January 23, 2011
  94. Chemistry

    In a 100g sample of water, determine the amount of weight that is attributed to Hydrogen and to Oxygen. i found the mass ratio which is 2:16 & then reduced its 1:8. then i set up my equation. 1x+8x=100g 9x=100g x=11.11111111 or 100/9 then i have to

    asked by lisa on January 23, 2011
  95. Calculus

    At a certain factory, output Q is related to inputs u and v by the equation Q= 17u^2+(16u+17v)/(u+v)^2 If the current levels of input are u= 10 and v = 25, use calculus to estimate the change in input v that should be made to offset a decrease of .7 unit

    asked by Rebekah on October 8, 2013
  96. Physics - Center of Mass

    A long thin rod lies along the x-axis from the origin to x=L, with L= 0.830 m. The mass per unit length, lambda (in kg/m) varies according to the equation lambda = lambda0(1+1.110x^3). The value of lambda is 0.200 kg/m and x is in meters. Calculate the

    asked by Kid on August 28, 2017
  97. chemistry

    The balanced equation is shown below. 2 HCl(aq) +CaCO3(s)=CaCl2(aq) +H2O(l) +CO2(g) 2.00 dm3 of a 3.00 M hydrochloric acid solution is added to the kettle (this is an excess). During the reaction 1.20 dm3 of CO2 is produced (assume 250C and 1 atmosphere)

    asked by Abaoaqu on October 27, 2014
  98. Physics

    A tennis ball of mass m = 0.065 kg and speed v = 25 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45° (Fig. 7-29). What is the impulse given the wall? I started out with finding the momentum and doubling it to get the impulse on

    asked by Anonymous on November 11, 2009
  99. Science (Chemistry) (Yield)

    Using your mass of Mg (0.101g), and assuming all of the Mg burns in oxygen and forms the theoretical predicted product, calculate the theoretical yield of magnesium oxide. I wrote out the equation and it turned out to be: 2Mg+O2->2MgO I have my mass of Mg

    asked by Ray on October 24, 2016
  100. Math

    (1) 4/5 Multipled by 5/7 in simplest form. My answer is 1.9 don't really know if its write show work. (2) -1 1/6 divided by 2/9= -5 1/4 need help showing work. (3)-6 2/5 divided by (-2 2/7) = 2 4/5 (4) 2 2/3 divided by (-4 1/4) = -11 1/3 i nedd help

    asked by Tisha on December 5, 2013

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