Questions Asked on
July 30, 2011

  1. Math

    A man and his wife share a sum of money in the ratio 3:2. If the sum of money is doubled, then in what ratio should they divide it so that the man still receives the same amount?

    asked by Amir
  2. calculus

    7. A cardboard box manufacturer wishes to make open boxes from rectangular pieces of cardboard with dimensions 40 cm by 60 cm by cutting equal squares from the four corners and turning up the sides. Find the length of the side of the cut-out square so that

    asked by Jeff
  3. word problems

    you are considering 2 jobs. one job pays $350 per week plus 2% commission on all sales. The second job pays $1200 per month and 2.5% commission on all sales. assuming sales of $1000,000 during the year, which job pays the best?

    asked by Anonymous
  4. physics

    A block of metal which weighs 60 newtons in air and 40 newtons under water has a density, in kilograms per meter cubed, of:

    asked by Steve
  5. chemistry

    What is the molar solubility of silver carbonate Ag2CO3 at 25 C if it is dissolved in a 0.15M solution of silver nitrate, AgNO3? Solubility constant: silver carbonate = 8.1 *10^(-12) Answer: 3.6 *10^(-10) So... not sure exactly what to do here. AgCO3 +

    asked by molar solubility
  6. Physics

    A compact car has a mass of 1400kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. What is the spring constant of each spring if the empty car bounces up and

    asked by falcon306
  7. Finance

    Colgate-Palmolive Company has just paid an annual dividend of $0.85. Analysts are predicting a 10% per year growth rate in earnings over the next five years. After that, Colgate’s earnings are expected to grow at the current industry average of 4.7% per

    asked by Debbie
  8. chemistry

    A 25.00 mL sample of 0.4 M dimethylamine (CH3)2NH is titrated with 0.150 M HCl. What is the pH at the half-equivalence point? Not sure what to do here exactly, I'm bad with the titration problems. I know there are normally a couple tables (finding the

    asked by 1/2 equivalence point
  9. chemistry

    What is the percent ionization of 0.025 M chlorous acid, HClO2 solution? Ka HClO2 = 1.1*10^(-2) Answer: 48% What I did: HClO2(aq) + H2O(l) ->

    asked by % ionization
  10. Physics

    Halley comet which passes around the sun every 76 years has an elliptical orbit. when closest to the sun it is at a distance of 8.823 x 10^10 m and moves with a speed of 54.6 km/s. The greatest distance between hally's comet and the sun ( aphelion ) is

    asked by Lonely
  11. statistics

    How large a sample should be surveyed to estimate the true proportion of college students who do laundry once a week within 3% with 95% confidence?

    asked by Anonymous
  12. algebra

    Suppose a sample of Cesium-137 with initial mass of 200 grams decays to a mass of 160 grams voer the course of 10 years. Find the half-life of Cesium-137 (Round to the nearest year) How much Cesium-137 is left in the sample after 60 years? Round to the

    asked by Melanie
  13. PHYSICS HELP!

    A compact car has a mass of 1400kg. Assume that the car has one spring on each wheel, that the springs are identical, and that the mass is equally distributed over the four springs. What is the spring constant of each spring if the empty car bounces up and

    asked by CEO
  14. biology

    what is the original color of Phenolphthalein solution? pink or colourless?

    asked by Yuni
  15. physics

    refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

    asked by Tarissa
  16. chemistry

    What is the pH of an aqueous solution of 0.10 M NaHC(3)H(2)O(4)? Answer: 10.9 What I did: NaHC(3)H(2)O(4) + H(2)O-->

    asked by pH levels
  17. Business Law

    Fred Salem works as a sales rep for Pennrock Greeting Cards. He has a three-year contract but quits after two years. As a result, Pennrock loses sales of $1000. May Pennrock recover this amount from Salem?

    asked by Sarah
  18. Physics

    In a binary star system, two stars orbit about their common center of mass, as shown in the figure . If r2 = 2r1, what is the ratio of the masses m2/m1 of the two stars?

    asked by Real
  19. algebra

    rowing. Abby rows 10 km upstream and 10 km back in a total time of 3 hours. The speed of the river is 5km/h.Find Abby's speed in still water.

    asked by sheba
  20. Chemistry

    Suppose a fuel-cell generator was used to produce electricity for a house. If each H2 molecule produces 2e-, how many kilograms of hydrogen would be required to generate the electricity needed for a typical house? Assume the home uses about 850 kWh of

    asked by norma
  21. british literature

    in william blake's poem " the chimney sweeper," the metaphor"coffins of black represent (A) innocence (B)chimneya (C)daffodils (D)the tiger

    asked by jessica tt
  22. Algebra

    The ratio of the lengths of two pieces of ribbon is 1:3. If 4 ft were cut from each piece, the sum of the new lengths would be 4 ft. How long would each piece be ?

    asked by Gaby
  23. englis

    In 3–5 sentences, write down what you told someone in that conversation. Once you write your sentences, go back and identify the sentence type of each one. They will be one of these three options: simple sentence, compound sentence, or complex sentence.

    asked by nisreen
  24. Chemistry

    A closed manometer is filled with an oil with density of 0.776 g/mL. What is the pressure in mmHg when the liquid column in the manometer stands at 85.7 mm? im not sure what mm is suppose to stand for here (probably meters but that doesnt fit into the

    asked by Henry
  25. HISTORY

    What are the main differences between the Shiites and the Sunnis?

    asked by Carrie
  26. physics

    refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

    asked by Tarissa
  27. english

    Please unscramble this word bssmyale it is related to at a dance

    asked by desiree
  28. chemistry

    How would you make up 255 mL of 0.150 M HNO3 from nitric acid that is 68.0% HNO3? The density of 68.0% HNO3 is 1.41 g/mL.

    asked by Henry
  29. GRAMMAR

    Dear MS. Writeacher - Thank You 1.(4). Since the previous scan, the patient has undergone surgery leaving a distorted and small right hemithorax. I put the comma here because you could start a new sentence with The Patient ..... 2.(5). The remainder of the

    asked by Leslie-To:Writeacher
  30. Math

    The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 12 hour periods. Below is the sample: 142 171 125 91 140 125 97 125 162 142 125 117 89 125 140 128 From this data set, compute the sample mean, median, mode and

    asked by Jen
  31. Math

    One thousand raffle tickets are sold for $1.00 each. One grand prize of $400 and two consolation prizes of $100 each will be awarded. Jeremy purchases one ticket. Find his expected value. ??

    asked by Jen
  32. Math

    I am supposed to find the pattern of a triangle of fractions, and find the next two rows. However, I can't seem to find the pattern. Could you please help me out? Row 1: 1 1 Row 2: 1 3/2 1 Row 3: 1 6/4 6/4 1 Row 4: 1 10/7 10/6 10/7 1 Row 5: 1 15/11 15/9

    asked by Needshelp
  33. physics

    refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

    asked by Tarissa
  34. Media influences on American Culture

    I just need to know how to start a final paper on a culturally influential,on television show, movie, song or website

    asked by carrie
  35. Science

    Chlorine gas was bubbled through a warm concentrated solution of potassium hydroxide. -write an equation of reaction that took place -describe how pure crystals potassium chlorate (5) may be obtained from the reaction above

    asked by Piom
  36. ALEGEBRA

    A STORE SOLD 18 SWEATSHIRTS. WHITE ONES COST $9.95 AND YELLOW ONES COST $11.50. IF $202.35 WORTH OF SWEATSHIRTS WERE SOLD, HOW MANY OF EACH WERE SOLD?

    asked by CURLEY
  37. algebra

    I get it all done and it is wrong please help solve this thanks. Solve the compound inequality. 4x-3/86

    asked by tara lee
  38. algebra

    can somebody help me out? am I doing this right? using the elimination method. y = 3x + 2 2y-6x=4 We have the solution for y so we use this to solve 2 (3x + 2) – 6x = 4 6x + 4 – 6x = 4 0x +4 = 4 Subtract 4 from both sides X=0 Now we use 0 for the x

    asked by kelly
  39. Science

    * P is a a black powder, which, when fused with a mixture of potassium hydroxide and potassium nitrate and then treated with water yields a green solution. The green solution turn purple when acidified. -identify P, the green solution and purple solution.

    asked by Piom
  40. English

    1. Each of the boys has his own computer. 2. Each of the boy has his own computer. 3. Each of the boys has its own computer. 4. Each boy has his own computer. (Is #2 wrong? Are all of them except #2 correct and the same?)

    asked by rfvv
  41. adverbs and adjectives

    check my paper for adverbs and adjectives?

    asked by ashlet
  42. Math / Linear Equations

    I was looking on a website that teaches linear algebra and it had this problem: 3x - 15 _______ =0 2x + 1 And it says the answer is: x = 5 But I don't understand how to get that answer so I hope someone can give me step by step directions for it.

    asked by Ashley
  43. General Education Statistics | MAT112

    There are many ways people can invest their money. In mutual funds, the investor buys shares in a fund that buys investment instruments for the investor, commonly stocks, bonds, or fixed instrument investments. Investment fund managers commonly advertise

    asked by Tanya
  44. biology lab

    -rate of photosyhthesis in presence of light intensity & CO2. ~A : sodium bicarbonate in darkness pH b4 xperiment-9 " @ 20 min- 8 " 60 min- 8 ~B: sodium bicarbonate in room light pH b4 xperiment-9 " @ 20 min-9 " 60 min-8 ~C: sodium bicarbonate 20 cm from

    asked by Yuni
  45. intermediate algebra

    Solve using the elimination method. Show all work. If the system has no solution or an infinite number of solutions, state this. 3x+7y=77 -2x+7y=42

    asked by ROCKY
  46. physics

    refer to a situation where you exert a force F on a crate of mass M, moving it at a speed v a distance d across a floor in a time interval t. The quantity F d/t is? a.)kinetic energy of the crate b.)potential energy of the crate c.)linear momentum of the

    asked by Tarissa
  47. chemistry

    what happens to the yield of sulphur trioxide?if you increase the pressure

    asked by Anonymous
  48. Math

    Write the statement in symbols using the p and q given below. Then construct a truth table for the symbolic statement and select the best match. p = I eat too much q = I'll exercise. I'll exercise if I eat too much. Is it q->p?? I do not know how to do the

    asked by Jen
  49. Math

    The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 4 hour periods. Below is the sample: 61 58 67 52 25 64 38 49 51 61 58 61 27 61 58 34 Construct a stem and leaf plot of the data. I have no idea ??

    asked by Jen
  50. math

    what is 8+10+2/12+4/9 in lowest term if possible

    asked by abby
  51. algebra

    factor completely. Remember to look first for a common factor. if the polynomial is prime, state this. -4t^2+64

    asked by sheba
  52. calculus

    Find the indefinite integral of 1-tanx/1+tanx Dont know how to really approach this question. Should i use identities, or is there a power series i can use?

    asked by integral
  53. Math-probability

    If the odds of winning a raffle are 2:240, what is the probability of winning? I think it's 2/240??

    asked by Jen
  54. math

    A family's plan to retire in 15 years and expect to need $500,000. Determine how much they must invest at 7.6% compounded annually to accomplish their goal.

    asked by Anonymous
  55. Chemistry

    When oxygen expands from the liquid to gaseous state how much more volume does it occupy?

    asked by Janet
  56. intermediate algebra

    Solve uing the subtitution method. Show your work. If the system has no solution or an infinite number of solutions, stat this,3x-15y=-12 3x+24y=-12

    asked by ROCKY
  57. Chemistry

    A sample of 0.43 moles of a metal M reacts completely with excess chlorine to form 18.23 grams of MCl. How many moles of Cl are in the sample of MCl that forms?

    asked by D
  58. acting?film

    does anyone know a website that i can recover deleted photos for free when i download i see my pic go through then when i want my pictures to save them they say i have to pay does anyone know one that doesnt have to pay if i want to save them thanks

    asked by james
  59. Maths

    Prove that the identity element e of a group G is unique.

    asked by Santosh
  60. Chemistry

    You are given 73 mL of CO2 at 0.69 atm. What volume (in mL) would the CO2 occupy at 0.67 atm if the temperature is maintained at a constant 25 °C.

    asked by Kyle
  61. history

    What is the basic message of the Quran and when was it compiled.

    asked by Matt
  62. math

    John borowed 12,000 and agreed to repay the loan in six equal monthly payments plus interest of 1.5% per month on the unpaid balance. What is his total payment for the third month?

    asked by Jules
  63. Physics

    In the early morning hours of June 14, 2002, the Earth had a remarkably close encounter with an asteroid the size of a small city. The previously unknown asteroid, now designated 2002 MN, remained undetected until three days after it had passed the Earth.

    asked by Geek
  64. statistics

    A random sample of 10 observations is selected from the first normal population and 8 from the second normal population. For the hypothesis, H0: ¦Ì1 ¡Ü ¦Ì2, (.01 significance level), what is (are) the critical value(s)? (Population standard

    asked by Anonymous
  65. Math

    A bag contains 7 lavender marbles, 11 turquoise marbles and 5 rainbow marbles. What is the chance of drawing a rainbow marble? If a rainbow marble is drawn then placed back into the bag, and a second marble is drawn, what is the probability of drawing a

    asked by Jen
  66. Pronoun Pratice

    I have written a paragraph about credit cards using at least five different pronouns. Could you please look over it and let me know if you see any errors, if my pronoun use is correct and if the sentences are complete. If you have any input about how a

    asked by Star
  67. Math

    What are some examples of exponential function (Using the formula: Al = A0(1/2)^t/h ), trig functions that are used to find amplitude, period, max, min etc., and combinations of transformation at home or in life in general?

    asked by Kate
  68. Chemistry

    Classify each of the following solutions as acidic, basic, or neutral based on the pH value. (a) pH = 8.0 (b) pH = 7.0 (c) pH = 3.5 (d) pH = 6.1

    asked by norma
  69. health

    what is the legal status of the electronic signature in the EHR in TN

    asked by Chandice
  70. Pre-Calc

    cot 19.8 degrees

    asked by Betsy
  71. Chemistry

    If you have 1 sack of cotton (which is expected to float on water) and were asked to measure the volume, what will you do?

    asked by Kian
  72. math

    Translate to an equation p $25 potted plants and s $20 shrubs total $300,graph the equation and use the graph to determine three different combination of potted plants and shrubs that total $300?

    asked by Diane
  73. history

    What problems had to be overcome Africa's interior could be opened up to Westeren explorers? what helped to over come these problems?

    asked by john
  74. physics

    if the coefficient of kinetic friction between a 35-kg crate and the floor is 0.30, what horizontal force is required to move the crate at a steady speed across the floor? what horizontal force is required uk is zero?

    asked by mariz
  75. MULTIPLICATION

    HOW MANY MILLIMETERS ARE THERE IN 8 CM

    asked by Anonymous
  76. Chemistry

    A sample of 50.0mL of argon is collected at 60*C and 820 torr. What does the sample weigh?

    asked by LaShun
  77. Calculus

    Need help with this complex number equation. 8-3i/-4-6i=

    asked by Josh
  78. Reimbursement Methodologies

    Who is responisable for adjusting the Medicare DRG list and reimbursement rates annually?

    asked by Anonymous
  79. Basic Operations and Bussiness Basics

    A store owner buys supplys from a vender for $8,450. The terms of sale are 2/10, n/30.What will be the net amount due if the owner pays the bill by the 10th day after he receives the supplies?

    asked by Anonymous
  80. English

    Charles "cut" the vegetables. Charles "chopped" the vegetables. Which sentence contains an active verb? How can you tell?

    asked by Heather
  81. algebra

    P is a point that is not on line m. How many lines can be drawn through P that form a 30 degree angle with line m?

    asked by Anonymous
  82. math

    please help I have no ideal how to do this convert the numeral to a numeral in base 10 8B3C0 16

    asked by Anonymous
  83. algerbra

    Find an equation of the line containing the given pair of points (1/6,1/3) and (5/6,3)

    asked by Renee
  84. intermediate algebra

    Write the substitution that could be used to make each equation quadratic in u. for w^1/3-3w^1/6+8=0,use w=

    asked by sheba
  85. health

    what are possible impact of not logging off or exit from the patient's record

    asked by Jessica
  86. technology

    how can you protect your own eletronic siginture?

    asked by Timothy
  87. math

    2445-765

    asked by ros
  88. communication

    what sistuations lend themselves to evaluation

    asked by annie
  89. communication

    how interest rates affect our purchasing decisions

    asked by annie
  90. Math

    Your class decides to publish a calendar to raise money. The initial cost, regardless of the number of calendars printed, is $900. After the initial cost, each calendar costs $1.50 to produce. What is the minimum number of calendars your class must sell at

    asked by Rochelle
  91. intermediate algebra

    rewrite with positive exponents. Assume that even roots are of nonnegative quantities and that all denominators are nonzero. [3}^-4 --- ua^2}

    asked by ROCKY
  92. math

    graph x+5y=10

    asked by Anonymous
  93. algebra

    variable to represent one quantity and second a theater sold 220 more adult tickets than childrens tickets

    asked by leslie