rebekah

Most popular questions and responses by rebekah
  1. Math Help? Check my answers.

    1. You mix the letters: S E M I T R O P I C A and L thoroughly. Without looking you draw one letter. Find the probability that you select a vowel. From a fraction to simplest form. 12/5 5/12 1/3 7/12 2. You roll a standard cube once. Fine P(0) 7/6 1 1/2 0

    asked on May 14, 2013
  2. chem

    net ionic equation. Aqueous acetic acid (HC2H3O2) is neutralized by aqueous barium hydroxide. i got H^+(g) + OH^-(g) --> H_2O(l) but it is wrong. are my states of matter wrong?

    asked on October 13, 2012
  3. MATH HELP?!?!?!

    1. Maria has the following scores in her mathematics class: 86 75 97 58 94 and 58 a: Find the mean median and mode b: Should Maria's Mathematics class teacher use mean median or mode of the exam to convince Maria that she needs to study more regularly? 2.

    asked on May 8, 2013
  4. Econ

    1. When Joe started his job at the laundromat 5 years ago, his wage was $5.50 an hour. Today his wage is $8.50 an hour. If Joe started his job in the base year, and his real wage is the same as when he started, what is the Consumer Price Index today? 2.

    asked on February 11, 2014
  5. chemistry

    what is the cation and anion of Na3PO4? thanks

    asked on November 23, 2010
  6. Check my answers? (Chemistry)

    I only get one chance for each of these questions so I was wondering if someone could check my answers, thanks! 1. Consider the following reaction at equilibrium. 2 BrNO(g) ---> 2 NO(g) + Br2(g) Predict the effect of the following changes to the reaction

    asked on April 19, 2011
  7. Chemistry

    At 40 degrees Celsius, the value of Kw is 2.92 X 10^-14 a.) calculate the [H+] and [OH-] in pure water at 40 degrees celsius b.)what is the pH in pure water at 40 degrees celsius c.)if [OH-] is .18M , what is the pH

    asked on December 21, 2007
  8. chem

    What type(s) of intermolecular force is (are) common to each of the following. (Select all that apply.) 1) Xe and methanol (CH3OH) a)london-dispersion forces b)dipole-dipole c)hydrogen bonding i put a and b but it was wrong 2)CH3OH and acetonitrile (CH3CN)

    asked on February 24, 2011
  9. Math

    Can anyone help me with this? A homeowner wants to build a circular patio. If the diameter of the patio is 20 feet, what is its area to the nearest whole number? A)1,257 B)314 C)63 D)31

    asked on April 11, 2016
  10. Music

    Can anyone help me with this question? Franz Schubert quoted the Ländler in his Piano Trio No. 1 in B-flat Major, op. 99, D. 898 by a) writing tumbling, non-metrical rhythms b)changing the meter c) writing alternating 3/4 measures of either notes and

    asked on April 20, 2016
  11. physics

    A car moving with constant acceleration covered the distance between two points 60.0 m apart in 6.00 s. Its speed as it passed the second point was 15.0 m/s. (a) What was the speed at the first point? (b) What was the magnitude of the acceleration? (c) At

    asked on September 10, 2011
  12. chem

    Which of the following compounds would be expected to form intermolecular hydrogen bonds in the liquid state? (Select all that apply.) HCO2H CH3OCH3 (dimethyl ether) CH3CO2H (acetic acid) CH3OH (methanol) thanks:)

    asked on February 26, 2011
  13. Pre Calc

    Alice throws a ball straight up with an initial speed of 40 feet per second from a height of 5 feet? a) Find parametric equations that model the motion of the ball as a function of time. b) How long is the ball in the air? c) When is the ball at its

    asked on May 7, 2013
  14. Physics

    Your lab partner says that a battery provides not a source of constant current, but a source of constant voltage. Do you agree or disagree and why? Also I am really confused with series and parallel circuits like when voltage, current, and resistance

    asked on April 14, 2012
  15. Precalc

    Find a formula for the nth term if... a)the 8th term is 8 and the 20th term is 44 b) the 8th term is 4 and the 18th term is -96 thanks!! I am just confused how you do this if you don't know what n is.

    asked on May 12, 2013
  16. Chem

    (a) The molar solubility of Ag2CrO4(s) at 35°C is 1.3 10-4 mol/L. Calculate Ksp. (b) If 0.0490 g of AgIO3 dissolves per liter of solution, calculate the solubility-product constant. (c) Using the appropriate Ksp value from Appendix D, calculate the

    asked on April 27, 2011
  17. chem

    Because the oxide ion is basic, metal oxides react readily with acids. (a) Write the net ionic equation for the following reaction. (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.) FeO(s) + 2 HClO4(aq)

    asked on October 29, 2012
  18. chem

    The complete combustion of octane, C8H18, the main component of gasoline, proceeds as follows. 2 C8H18(l) + 25 O2(g) ¨ 16 CO2(g) + 18 H2O(g) Octane has a density of 0.692 g/mL at 20‹C. How many grams of O2 are required to burn 26.5 gal of C8H18? i

    asked on October 6, 2012
  19. Chemistry

    calculate the freezing and boiling points of each of the following solutions. (a) 0.37 m glucose in ethanol freezing point ______I got -1.2e2 but its wrong_______°C boiling point _________I got 1.1e2 but its wrong:(____°C (b) 15.0 g of decane, C10H22, in

    asked on March 24, 2011
  20. chem

    is SiS2 polar or nonpolar? Why? I think its non but when I searched it people were saying polar thanks:)

    asked on February 3, 2011
  21. chem

    Complete and balance each of the following equations. If no reaction occurs, please enter NR in each answer box. (Type your answer using the format CO2 for CO2. Do not leave any box blank. Use the lowest possible coefficients.) ____Al4C3(s) + ___H2O

    asked on November 28, 2010
  22. econ

    The International Disc Jockey\'s Union has a wage contract that stipulates a yearly wage increase based on the Consumer Price Index. If this year\'s wage is $25.00, the current CPI is 180, and the contract was first signed in the base year, what was the

    asked on February 11, 2014
  23. Pre calc

    Alice throws a ball straight up with an initial speed of 40 feet per second from a height of 5 feet? a) Find parametric equations that model the motion of the ball as a function of time. b) How long is the ball in the air? c) When is the ball at its

    asked on May 6, 2013
  24. chem

    Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? (Select all that apply.) NaCN and HCN NaCN and NaOH HCN and NaOH HCl and NaCN HCl and NaOH and Which of the following gives a

    asked on April 12, 2011
  25. chemistry

    When ice melts, it absorbs 0.33 kJ per gram. How much ice is required to cool a 12.0 fluid ounce drink from 75°F to 35°F, if the heat capacity of the drink is 4.18 J/g·°C? (Assume that the heat transfer is 100% efficient.) please explain realy realy

    asked on September 15, 2010
  26. chem

    Give the conjugate base of the following Bronsted-Lowry acids. (Type your answer using the format CO2 for CO2, [H2AsO4]- for H2AsO4-, and [Ni(CN)4]2- for Ni(CN)42-.) 1) H2SO4 I have tried H[SO4]- and just HSO4 but they are both wrong:(

    asked on March 31, 2011
  27. chemistry

    Write electron configurations for the following ions, and determine which have noble-gas configurations. (Type your answer using the format [Ar] 4s2 3d10 4p2 for [Ar]4s23d104p2.) Ru2+ thanks

    asked on January 20, 2011
  28. satp conditions

    Calcium hydride reacts with a vast excess of water to form calcium hydroxide and hydrogen gas. (See the periodic table.) (a) Write a balanced chemical equation for the reaction. (Use the lowest possible coefficients. Include states-of-matter under SATP

    asked on October 4, 2012
  29. chemistry

    what is the cation and anion of Na3PO4? thanks

    asked on November 28, 2010
  30. chemistry

    a 5.00g sample of Al pellets (specific heat=0.89J/oC*g) and a 10.00g sample of Fe pellets (specific heat=0.45J/oC*g) are heated to 100.0oC. The mixture of hot iron Al is then dropped into 92.1g of water at 21.8oC. Calculate final temp of metal and water

    asked on November 6, 2007
  31. chem

    Which of the following pairs of substances, when mixed in any proportion you wish, can be used to prepare a buffer solution? (Select all that apply.) NaCN and HCN NaCN and NaOH HCN and NaOH HCl and NaCN HCl and NaOH I thought it was the middle three

    asked on April 10, 2011
  32. science

    Of HOOH(s) and TiO2(s) which one has the higher melting point?

    asked on February 28, 2011
  33. calculus

    500-gallon tank initially contains 200 gallons of brine containing 100 pounds of dissolved salt. Brine containing 2 pounds of salt per gallon flows into the tank at the rate of 4 gallons per minute, and the well-stirred mixture flows out of the tank at the

    asked on June 27, 2016
  34. Business, Accounting

    A firm has a debt to equity ratio of 50%, debt of $300,000, and net income of $90,000. The return on equity is a. 60% b. 15% c. 30% d. not enough information

    asked on February 25, 2015
  35. Trigonometry

    A boy is twirling a model plane on a string that is 2 meters long. If he twirls the plane at 0.4 revolutions per second, how far does the plane travel in 5 minutes? Give your answer in meters to 2 decimal places.

    asked on November 6, 2014
  36. Finance

    Community Hospital has annual net patient revenues of $150 million. At the present time, payments received by the hospital are not deposited for six days on average. The hospital is exploring a lockbox arrangement that promises to cut the six days to one

    asked on November 17, 2012
  37. Pre calc

    Write the equation in standard ellipse form and graph. 34 x^2 -24xy +41y^2 +41 y^2 -25= 0. i got x= (4 x prime- 3 y prime)/5 and y=(3x prime +4y prime)/5 but cant get the correct math when I plug that into the original equation. Also I need help finding

    asked on May 5, 2013
  38. Biology

    What causes mutations in bacteria? and Can mutations affect plasmids?

    asked on May 13, 2013
  39. Chem

    Consider the exothermic reaction CoCl42-(aq) + 6 H2O(l) --> Co(H2O)62+(aq) + 4 Cl -(aq). Will the equilibrium concentration of CoCl42- increase or decrease when the following changes occur? (a) HCl is added. increases decreases .(b) Co(NO3)2 is added.

    asked on April 19, 2011
  40. Chemistry

    Determine the volume of 0.240 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is shown below. H2SO4(aq) + 2 KOH(aq)---> K2SO4(aq) + 2 H2O(l) a) 26 mL of 0.240 M H2SO4 b) 143 mL of 0.14 M

    asked on March 18, 2011
  41. Biology

    What kinds of cells make it difficult to tear fern leaves from a plant? thanks:)

    asked on April 28, 2010
  42. Chemistry (repost)

    Determine the volume of 0.240 M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is shown below. H2SO4(aq) + 2 KOH(aq)---> K2SO4(aq) + 2 H2O(l) a) 26 mL of 0.240 M H2SO4 b) 143 mL of 0.14 M

    asked on March 19, 2011
  43. Algebra

    A grocer mixes together some cashews costing 8$ per kilogram with some nuts costing 10$ per kilogram. The grocer sold 12 kg of the mixture for 8.50$ per kilogram. How many kilograms of cashews were in the mixture? I have to find 2 equations then find the

    asked on November 16, 2009
  44. check my precalc

    #1. (3x^3-4x^2-3x+4)/(x^3-5x) my answers: y-int: NONE x-int: 1, -1, and 4/3 x asymtope: x= 0 and +- square root of 5 y asym: y=3 If it crosses horiz asym: idk i need help on this #2. (x^4-7x^2+12)/(x^2-5x+4) x-int: -2, 2, and +- square root of 3 y-int: 3

    asked on October 22, 2012
  45. Chem

    Use the following reactions to arrange the elements A, B, C, and D in order of their redox activity, from greatest to least. 2 A + B2+ --> 2 A+ + B B + D2+--> B2+ + D A+ + C -->No reaction 2 C + B2+ --> 2 C+ + B Can someone explain? thanks

    asked on May 8, 2011
  46. Chemistry

    A 1.00 L solution saturated at 25°C with lead(II) iodide contains 0.54 g of PbI2. Calculate the solubility-product constant for this salt at 25°C. thanks

    asked on April 27, 2011
  47. Precalc

    1. If a bicycle wheel has a diameter of 27 inches, find the radian measure of the angle through which the wheel turns as the bicycle travels a distance of one mile. thanks!!

    asked on January 9, 2013
  48. chemistry

    How many hydrogen atoms are present in 1.02 mg of aspartame? I already got that there are 2.08e18 molecules of aspartame in 1.02mg of aspartame but i am not sure how to find how many atoms of hydrogen there are

    asked on September 29, 2012
  49. chem

    Indicate the type of crystal (molecular, metallic, covalent-network, or ionic) each of the following would form upon solidification. 1. B

    asked on March 1, 2011
  50. Chem

    (c) Using the appropriate Ksp value from Appendix D, calculate the solubility of Cu(OH)2 in grams per liter of solution. Appendix D: Ksp for Cu(OH)2 = 4.8 x 10-20 thanks!

    asked on April 27, 2011
  51. chemistry

    classify in as many ways possible 2 Rb(s) + Br2(g) --> 2 RbBr(s) acid-base double-displacement gas evolution oxidation-reduction precipitation single-displacement synthesis thanks

    asked on November 29, 2010
  52. chem

    What are the IUPAC names of the following alkane. CH3CHCH3 I CH3CH2CH2CHCH2CHCH3 I CH3 i thought it was 2-methyl-4-propylheptane but aparently that is wrong. does anyone know the answer?

    asked on October 24, 2010
  53. Chemistry

    Of each pair of solids, which one has the higher melting point? a) HCl and KCl b) Cu and Kr. Can you please explain? How do you know the melting point? Is it the type of intermolecular force that they have? thanks!

    asked on February 28, 2011
  54. Chemistry

    In the explosion of a hydrogen-filled balloon, 0.75 g of hydrogen reacted with 6.9 g of oxygen to form how many grams of water vapor? (Water vapor is the only product.) I am really confused on how to do this.

    asked on September 11, 2010
  55. precalc

    what is the minimum degree of a polynomial. How do I find that and how do I find the maximum nuber of turnin points. I know it has to do with n-1 but Idont know how

    asked on October 7, 2012
  56. precalc

    # 1 a special window has the shape o a rectangle surmounted by an eqilatera tiangle. ifthe perimeter o the winow is 16 ft, what dimensions will admit te most light (area of triangle= suarre root of 3/4 times x2.

    asked on September 30, 2012
  57. chem

    An equilibrium mixture of the following reaction was found to have [COF2] = 0.255 M and [CF4] = 0.118 M at 1000°C. What is the concentration of CO2? 2 COF2(g) CO2(g) + CF4(g) Keq = 2.00 at 1000°C Thanks:)

    asked on April 16, 2011
  58. chem

    Consider the following reaction. 2 NO(g) + 2 H2(g) N2(g) + 2 H2O(g) An equilibrium mixture of this reaction at a certain temperature was found to have [NO] = 8.1 10-3 M, [H2] = 4.1 10-5 M, [N2] = 5.3 10-2 M, and [H2O] = 2.9 10-3 M. What is the value of the

    asked on April 15, 2011
  59. chem

    how do i figure this out?? How much heat does your body lose when 2.46 g of sweat evaporates from your skin at 25°C?

    asked on February 22, 2011
  60. chemistry

    the following reaction has a Kp = 109 at 25 degrees C 2NO(g) + Br2(g) reversible 2NOBr(g) If the equilibrium partial pressure of Br2 is 0.0159 atm and equil pressure of NOBr is 0.0768 atm, calculate the partial pressure of NO at equlibrium. What are the

    asked on December 3, 2007
  61. Chemistry

    I need help with this question, I don't know how to do it. If 210 mL of isopropyl alcohol is diluted with water to a total volume of 300 mL, what is the percent by volume of isopropyl alcohol in the solution?

    asked on April 3, 2016
  62. physics

    Any vector can be written as a unit vector multiplied by the magnitude of the vector (a positive scalar). Write each of the following vectors as the magnitude of the vector times the appropriate unit vector: < 0.00330, 0, -0.00330 >

    asked on June 17, 2014
  63. Precalc

    1. If a bicycle wheel has a diameter of 27 inches, find the radian measure of the angle through which the wheel turns as the bicycle travels a distance of one mile. thanks!!

    asked on January 9, 2013
  64. chem

    Calculate the amount of heat transferred when 2.06 g of Mg(s) reacts at constant pressure. 2 Mg(s) + O2(g) ¨ 2 MgO(s) ƒ¢H = -1204 kJ

    asked on November 1, 2012
  65. pre calc

    I am sooo confused on my homework. #1 Two cars lave an intersection at the same time. One is headed south at a constant speed of 30mph. the other is heading west at a constant speed of 40mph. Build a model that expresses the distance (d) between thec ars

    asked on September 18, 2012
  66. Chem

    balance the half-reaction. (Type your answer using the format CO2 for CO2, [NH4]+ for NH4+, and [Mg]2+ for Mg2+. Use the lowest possible coefficients.) I am sooo confused (a) S(s) --> H2S(g) thanks

    asked on May 5, 2011
  67. chemistry

    What intermolecular force(s) must be overcome to do the following. (a) sublime ice hydrogen bonding dipole-dipole interactions (not hydrogen bonding) induced-dipole/induced-dipole forces ion-dipole force You can choose one. Can some one please explain. I

    asked on February 26, 2011
  68. Any Veternarian here that I can interview?

    I am doing a career report on the job of a vet and would like an interview as one of my sources. Is there any vet that would be willing to answer these three questions? 1.What are the educational and training requirements for this career? 2. What career

    asked on December 2, 2012
  69. chem

    Aspirin (C9H8O4) is produced from salicylic acid (C7H6O3), and acetic anhydride (C4H6O3): C7H6O3 + C4H6O3 ¨ C9H8O4 + HC2H3O2 . (c) What is the theoretical yield of aspirin if 189 kg of salicylic acid is allowed to react with 128 kg of acetic anhydride?

    asked on October 7, 2012
  70. chemistry

    If 0.075 g of MgF2 dissolves per liter of solution, calculate the solubility-product constant. I got 2.0e-9 but it was not correct.

    asked on April 27, 2011
  71. chem.

    Calculate the amount of heat required to raise the temperature of a 25 g sample of water from 5°C to 10.°C. i got 523 then rounded it to two sig figs 520 but it said it was wrong

    asked on September 15, 2010
  72. AP Chemistry

    I have almost the same question as Josh from August 23rd. If you use 10.0 g of CuSO4 and excess NH3, what is the theoretical yield of Cu(NH3)4SO4? I can handle the theoretical yield, but how do I find the mass of NH3 so I can find the thoretical yield?

    asked on September 30, 2007
  73. Chemistry

    I need help with this question. If the solubility of a gas in water is 6.0 g/L when the pressure of the gas above the water is 2.0 atm, what is the pressure of the gas above the water when the solubility of the gas is 3.0 g/L?

    asked on April 3, 2016
  74. Quotes about English language origin

    So I wanted to start my etymology paper about fascinating word origins with a quote as my attention grabber. I am looking for a quote that talks about the english language and the origin of most of its words. Some interesting quote. I don't even know if

    asked on April 30, 2011
  75. chem

    ...A dioxin-contaminated water source contains 0.044% dioxin by mass. How much dioxin is present in 6.5 L of this water? (Assume that the density of the solution is 1.00 g/mL.) thanks

    asked on March 9, 2011
  76. math

    Given: segment AC and segment BD bisect each other at E prove: E is the midpoint of segment RS i don't know if you will be able to visualize the picture but just incase someone is i really need help on the proof for this one. Picture: two(supposedly

    asked on October 23, 2010
  77. Chem

    Predict how many electrons will most likely be gained or lost by each of the following elements. Al I know it loses but how many?

    asked on September 24, 2010
  78. chem

    One could easily determine a single bb's mass by simply weighing it or by weighing 100 BBs and dividing the mass by 100. Why couldn't Robert Millikan use this procedure to measure the charge of an electron? Thanks:)

    asked on September 23, 2010
  79. Chemistry

    .Question part Points Submissions 1 0/0.5 2/3 Total 0/0.5 ...In the explosion of a hydrogen-filled balloon, 0.75 g of hydrogen reacted with 6.9 g of oxygen to form how many grams of water vapor? (Water vapor is the only product.) i already posted this but

    asked on September 11, 2010
  80. 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 on October 8, 2013
  81. science- please check my work.

    Aspirin (C9H8O4) is produced from salicylic acid (C7H6O3), and acetic anhydride (C4H6O3): C7H6O3 + C4H6O3 ¨ C9H8O4 + HC2H3O2 How much salicylic acid is required to produce 2.0 102 kg of aspirin, assuming that all of the salicylic acid is converted to

    asked on October 7, 2012
  82. speech

    I am looking for an attention getter for my imformative speech about dog-human communication, In the speech, I am going to be talking about verbal and non verbal dog behaviors and then how dogs repond to human verbal and non verbal behaviors. I was

    asked on February 24, 2012
  83. Quantitative analysis

    If we produce 350 units of output, the total cost is $11,500. It costs us $12,900 to produce 420 units. If we assume the relationship is linear, determine the cost function.

    asked on January 25, 2012
  84. speech

    I wrote an itroductory speech that I am going to be giving in speech class but I can't think of a good conclusion. The 3 major points of the speech is that I am a hard-working student. Adventurous family member, and laidback friend. I talk some at the

    asked on January 12, 2012
  85. Chem

    Assign an oxidation state to each atom in each of the following compounds. Fe(CN)3 Fe: 3+ (i know this is correct) C N im not sure about the other two

    asked on May 5, 2011
  86. chem

    What is the molarity of ZnCl2(aq) that forms when 15.4 g of zinc completely reacts with CuCl2(aq) according to the following reaction? (Assume a final volume of 175 mL.) Zn(s) + CuCl2(aq) --> ZnCl2(aq) + Cu(s) I got the moles of Zn but don't know what to

    asked on March 19, 2011
  87. chem help urgent!

    i only have one submission for these and i dont' really know how to tell which one has the higher boiling point. can you help? Of each pair of solids, which one has the higher melting point? Kr(s) or Cu(s) and.. CCl4(s) or SiCl4(s)

    asked on March 1, 2011
  88. chem-repost

    I ddin't know if anybody would look far down to page to help me answer my question but this is what was said so far. Posted by rebekah on Sunday, October 24, 2010 at 4:48pm. Give the general formula for any dialkene; that is, a straight-chain hydrocarbon

    asked on October 24, 2010
  89. Chem

    (b) If the natural abundance of Ag-107 is 51.84%, what is the natural abundance of Ag-109? % (c) If the mass of Ag-107 is 106.905, what is the mass of Ag-109? amu I really need help. Can u say the answer then explain how you got it? Thanks:)

    asked on September 26, 2010
  90. quick chemistry

    A solid white substance A is heated strongly in the absence of air. It decomposes to form a new white substance B and a gas C. The gas has exactly the same properties as the product obtained when carbon is burned in an excess of oxygen. What is solid B

    asked on September 4, 2010
  91. Chemistry

    Hello! It's me again. How do I calculate % ionization for a.) .50M HONH2 Kb = 1.1e-8 b.) .10M CH3NH2 kB = 4.38e-4 What is [OH-] and pH of these solutions a.) 0.090M NaOH and 0.090M LiOH b.) 0.050M Ba(OH)2 and 0.050M RbOH

    asked on December 21, 2007
  92. Econ

    When considering economic growth, many policy makers focus on real GDP per capita since it takes into account the potentially distorting effects of ______________ and ________________. Any large, sustainable increase in real GDP must be the result of

    asked on February 18, 2014
  93. English/Literature

    1. Identify the antecedents for the bolded pronouns for questions 1 + 2. The voters were worried about "their" money and "their" future. future money voters worried 2. The New Deal did not end the depression but "it" did lessen the financial hardships of

    asked on August 20, 2013
  94. precalc

    #1 For what positive numbers will the cube of a number exceed four times its square? #2 For what positive numbers will the cube of a number be less than the number? thanks

    asked on October 21, 2012
  95. Check my precalc

    Find the verticle, horizontal, and oblique asymtopes if any. #1 (x^2 +6x+5)/2x^2 +7x+5 y= (1/2) and x= -5/2 and -1 #2 (8x^2 +26x-7)/4x-1 y=2x+7 and x=1/4 #3. (x^4-16)/(x^2-2x) x= 0 and 2 y= x^2 +2x+4 thanks!

    asked on October 14, 2012
  96. Precalc

    # 1 a special window has the shape o a rectangle surmounted by an eqilatera tiangle. ifthe perimeter o the winow is 16 ft, what dimensions will admit te most light (area of triangle= suarre root of 3/4 times x2.

    asked on September 30, 2012
  97. pre calc

    f(x)=-3x+2 a) express the slope of the secant line of each function in terms of x and h. b) find msecant for h=.5, .1, and.01 at x=1. c) find the equation for the secant line at x=1 with h=1.01 I got -3 for a but don't know how to do the others becaus a

    asked on September 9, 2012
  98. pre calc

    I have a few problems from my homework that I am having trouble with. #1 Find the difference quotient of f foreach function f(x)=1/(x+3) I got -2x+6 #2 Express the area of an isosceles right triangle as a function of the length x of one of the two eual

    asked on August 30, 2012
  99. french book

    I have homework in my French book but left it at school. I use the Imaginez: le français sans frontières. There is an online version but it says I needa code. I don't have my book with me so I can't get the code from there. is it a common code that can

    asked on January 19, 2012
  100. random question

    what words have the word or sound of 'mole' in the. this is for a science project i am doing. we are given out lines of the animal a mole and we have to make a mole but have like a theme to it kinda. like someone did a camel(camole) thanks

    asked on May 9, 2011

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