1. Statistics

    At a certain concert, 43% of the audience was under 20 years old. A random sample of n = 181 members of the audience was selected. Find the value of sample mean, the mean of the distribution of sample proportions. Write only a number as your answer. Do not

    asked by Obi on October 19, 2015
  2. Math

    The revenue obtained from the sale of q units of a product is given by : R= 30q-(0.3q^2) A) How fast does R change with respect to q when: q=10 B) Find the relative rate of change of R, and to the nearest percent, find the percentage rate of change of R.

    asked by Josie on January 9, 2017
  3. math (check answer plz)

    Carol has a collection of 100 stamps the graph below shows the percentage of stamps she has from each country how many more of Carols stamps are from france than from england? France: 24%, England:22%, Norway:29%, Italy:25%.

    asked by person on April 21, 2014
  4. Math

    Week 1 42hours(including 4 hrs sick leave,6 hrs travel) Week2 46 hours(including 5 hrs travel) What percentage of the recorded time did the worker spend traveling

    asked by Jo on September 15, 2016
  5. Physic

    A person weighs 872 N in air and has a body fat percentage of 20.7%. a. What is the overall density of this person's body? b. What is the volume of this person's body? c. Find the apparent weight of this person when completely submerged in water.

    asked by Ann on April 19, 2010
  6. Chemistry

    A chemist reacts 8.85 g of iron with an excess of hydrogen chloride to form hydrogen gas and iron choloride. How do you calcualte the theoretical yield and the percentage yield of hydrogen if .27g H2 are collected.

    asked by Blake on January 10, 2010
  7. Statistics

    The scatter diagram shows: a. The frequency with which each value occurs in the data. b The values ​​of a variable designed in comparison with the values ​​of a second variable. c. The mean data sets. d. The percentage of data belonging to

    asked by Susie on August 30, 2013
  8. Math

    2500 students take a college entrance exam. The scores on the exam have an approximate normal distribution with mean u = 52 points and a standard deviation o = 11 points. Estimate the percentage of students scoring 52 points or more. ^ How would you do

    asked by Ruth on May 8, 2013
  9. Differential Calculus

    you have the expression for dp. q=3, dq=.007*3 Now solve for dp and solve for P at q=3 percentage change in p then is dp/p divided by 100. alright... dp(2q^2-5)^2, dp/dq = 2(2q^2-5) dp = 0.007x3 = 0.021 dp = (2(2(2)^2-5)^2 = (6)^2 = 36 36x0.021 = 0.756

    asked by matrix school 2 on August 14, 2009
  10. Math

    If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, approximately what percentage of light bulbs has a life of more than 3000 hours? A. About 84% B. About 68% C. About 32% D. About 16%

    asked by angela on May 5, 2016
  11. Math ---HELP!!!!!

    If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, approximately what percentage of light bulbs has a life of more than 3000 hours? A. About 84% B. About 68% C. About 32% D. About 16%

    asked by angela on May 5, 2016
  12. Grade 12 Chemistry

    This is my question: AspirinTM (acetylsalicylic acid) is a monoprotic acid with molar mass of 180g/mol. An aqueous solution containing 3.3 g/L has a pH of 2.62. What percentage of acetylsalicylic acid molecules ionizes in the solution?

    asked by Anonymous on January 5, 2014
  13. Math

    Actual lengths of pregnancy terms are nearly normally distributed about a mean pregnancy length (of about 38-39 weeks) with a standard deviation of 15 days: about what percentage of births would be expected to occur within 15 days of the mean pregnancy

    asked by Daniel on February 13, 2013
  14. math

    A geologist collected a 2.5-kg soil sample for analysis. If she only needs 20 grams of sample to perform the analysis, what percentage of the soil sample will be tested? Answer: .8% 2.5kg = 2500g 20/2500 = .008 = .8%

    asked by cici on October 23, 2013
  15. Chemistry

    Ethylamine, CH3CH2NH2, has a strong, pungent odor similar to that of ammonia. Like ammonia, it is a Brønsted base. A 0.10 M solution has a pH of 11.87. Calculate the Kb and pKb for ethylamine. What is the percentage ionization of ethylamine in this

    asked by Anonymous on April 17, 2014
  16. math

    A geologist collected a 2.5-kg soil sample for analysis. If she only needs 20 grams of sample to perform the analysis, what percentage of the soil sample will be tested? Answer: .8% 2.5kg = 2500g 20/2500 = .008 = .8%

    asked by cici on October 23, 2013
  17. math

    The weight of a can made from a machine is normally distributed with a mean of 25 grams and a standard deviation of 0.4 grams. What percentage of the cans from this machine would not meet the minimum required weight of 24 grams? Round to the nearest

    asked by lynda on November 5, 2013
  18. chemistry

    A 0.90g sample of liquid water was introduced into an evacuated 2.00 L flask, which was then sealed and heated to 37 (degree)C. What percentage, by mass, of the water remained as liquid? [Vapor pressure of water at 37 (degree)C=48.2 torr]

    asked by Jim on June 23, 2010
  19. statistics

    The weight of a can made from a machine is normally distributed with a mean of 25 grams and a standard deviation of 0.4 grams. What percentage of the cans from this machine would not meet the minimum required weight of 24 grams? Round to the nearest

    asked by lynda on November 5, 2013
  20. math

    in 1996 there were about 2,342,000 marriages in the united states, using the # above my teacher wants me to find percentage of marriages per month she started me with january which had 100,000 mariages which came out to 4 percent of marriages for that

    asked by destiny on May 6, 2009
  21. finance math

    A car dealer purchased 2 cars, one for $1500 and the other for $20000, He then sold the first car at a loss of 14% and the second car for a profit of 15%. Find the dealer¡¯s profit for the whole transaction and express the answer as a percentage of his

    asked by timmy on August 27, 2012
  22. statistic

    Suppose the people living in a city have a mean score of 48 and a standard deviation score of 7 on a measure of concerns about the environment. Assume that these concerns are normally distributed using the 50%- 34% - 14% figures. Appoxatmaily what

    asked by diane on September 18, 2014
  23. Physics

    A Ferris wheel has a circumference of 93 m and it completes one rotation in 2.3 minutes without stopping. What is the percentage change in apparent weight (=weight difference/weight = W/W) of a passenger between the highest and the lowest positions on this

    asked by Logan on September 22, 2011
  24. Algebra

    The diameter of bolts produced by a certain machine distributed with a mean of 0.30 inches and a standard deviation of 0.01 inches. What percentage of bolts will have a diameter greater than 0.32 inches.Does your answer make sense based on the given

    asked by Anonymous on May 8, 2016
  25. math

    at the beginning of the day, the dow jones index was at $10,287.56. At the end of the day it was at $10,005.23. What was the rate of change of the Dow Jones on this particular day? Express your answer as percentage and round to 2 decimal places.

    asked by nitachia on June 17, 2016
  26. math

    A worker submits the following data on a timesheet: Week 1 - Total hours: 42 (including 4 hours sick leave, 6 hours travel time. What percentage of the recorded time did the worker spend traveling?

    asked by mika on September 2, 2015
  27. Statistics

    A physical therapist wants to determine the difference in the proportion of men and women who participate in regular sustained physical activity. What sample size should be obtained if he wishes the estimate to be within four percentage points with 99 ​%

    asked by Zechariah on July 6, 2016
  28. Finance

    A speculator sells a stock short for $70 a share. The company pays a $2 annual cash dividend. After a year has passed, the seller covers the short position at $60. What is the percentage return on the position (excluding the impact of any interest expense

    asked by Lizzie on January 20, 2015
  29. Accounting

    Which of the following would be most likely to lead to a higher level of interest rates in the economy? Answer a. Corporations step up their expansion plans and thus increase their demand for capital. b. Households start saving a larger percentage of their

    asked by Anonymous on October 27, 2012
  30. English

    what is the complete subject and complete predicate on the following sentances 1. Angela's favorite program changes the colors and sixes of images. 2. Graphic artists can choose a percentage of red, blue or yellow. 3. They can also focus a photograph, or

    asked by ted on December 13, 2011
  31. Chemistry

    Trichloroethane, C2H3Cl3, is the active ingredient in aerosols that claim to stain-proof men's ties. Trichloroethane has a vapor pressure of 100.0 mm Hg at 20.0 C and boils at 74.1 C. An uncovered cup (1/2 pint) of trichloroethane (d=1.325 g/mL) is kept in

    asked by Nala on January 28, 2014
  32. Accounting

    Which of the following would be most likely to lead to a higher level of interest rates in the economy? Answer a. Corporations step up their expansion plans and thus increase their demand for capital. b. Households start saving a larger percentage of their

    asked by Anonymous on October 27, 2012
  33. Moles

    i was practicing some advanced level questions and i came across this one On heating with soda lime, sodium ethanoate decomposes in accordance with the following eqn CH3COONa + NaOH ----> CH4 + Na2CO3 iF 8.2g of sodium ethanoate produced 560 cm^3 of

    asked by Kim on November 15, 2006
  34. finance

    A speculator sells a stock short for $55 a share. The company pays a $2 annual cash dividend. After a year has passed, the seller covers the short position at $45. What is the percentage return on the position (excluding the impact of any interest expense

    asked by ro on January 30, 2012
  35. Math

    Please help me with these problems. Decimals and fractions Construction: an a-frame cabin has a triangular front with a base of 30 ft and a height of 20 ft. If the front is to be glass that cost $3 per square foot, what will the glass cost? The distance

    asked by Trina on February 20, 2008
  36. Math

    How do you figure the percentage of this question. The vote count for candidate A was 7,310. The vote count for candidate B was 14,190 . Only two candidates were running. What percent of the voters voted for candidate A?

    asked by MyKel on June 20, 2011
  37. math

    A school library had 1050 books last year. There are only 950 books in the library this year. What is the percentage decrease in the number of books? Round your answer to 2 decimal places.

    asked by Saba on April 10, 2016
  38. Physics

    In successive experimental measurements, the refractive index of a glass turned out to be 1.54, 1.45, 1.53, 1.56, 1.44, 1.54. Calculate: i. Mean refractive index ii. Mean absolute error iii. Fractional error iv. Percentage error

    asked by Shrawan on July 15, 2011
  39. Statistic

    Heights of adult men have a mean of 69.0 inches and a standard deviation of 2.8 inches. Approximately what percentage of adult men have a height between 66.2 and 77.4 inches? Must show the number and the empirical rule

    asked by Theresa on February 19, 2013
  40. math

    brian sends an email which is 5242880 bytes then he sends another email which is 5880000 bytes how much bigger is his econd email than his first express your answer as a percentage please can you show me the method

    asked by dk on September 20, 2009
  41. math

    6 scarves are black, 2 scarves are red, and 2 scarves are white. it is dark and sarah reaches into the drawer and chooses a scarf. what is the probability of a scarf being white in percentage form?

    asked by tabitha on February 8, 2017
  42. Economics

    What percentage of income is spent on lottery tickets by (a) A poor family with an income of $19,000 per year who purchase the average amount of lottery tickets for their income bracket?

    asked by Aarica on April 19, 2014
  43. sTATISTICS

    If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, approximately what percentage of light bulbs has a life of more than 3000 hours?

    asked by KDIZZLE on August 7, 2014
  44. 11th grade chemistry

    The bottled butane gas is installed in an oven that can supply 0.125 g/hr .In a kitchen room of volume 32 m^3 (volume of air), the oven is made to operate for 2 hours. Assuming the kitchen room is closed, what is the mole composition of the atmosphere in

    asked by angy on March 2, 2016
  45. Chemistry

    Nitric acid is a component of acid rain that forms when gaseous nitrogen dioxide pollutant reacts with gaseous oxygen and liquid water to form aqueous nitric acid. Write a balanced chemical equation for this reaction. Express your answer as a chemical

    asked by Lisa on October 16, 2010
  46. Physics Problem 6.20

    The center of a 1.10 diameter spherical pocket of oil is 1.10 beneath the Earth's surface. Estimate by what percentage directly above the pocket of oil would differ from the expected value of for a uniform Earth? Assume the density of oil is

    asked by Michael Moskvich on April 4, 2010
  47. math

    The heights of American women between the ages of 18 and 24 are approximately normally distributed. The mean is 64.1 inches, and the standard deviation is 2.5 inches. What percentage of such women are over 5 feet 8 inches tall? z = (68 - 64.1)/2.5 = + 1.56

    asked by Comet on July 6, 2015
  48. Math

    Austin bought a new house. The value of his house is modeled by the function H\left( x \right) = 120000{\left( {1.20} \right)^{\left( {\frac{1}{2}x} \right)}} where x is the number of years since he purchased the house. Looking at the model by what

    asked by Jenn on July 14, 2015
  49. statistics

    Distance travelled in a week by sales staff employed by nationwide security firm is approximately normally distributed with a mean of miles and standard deviation of 48 miles. Estimate the percentage of staff who in a week travel less than 80 miles

    asked by Anonymous on May 3, 2010
  50. math

    1. kristi jogged for 3/5 of an hr,swam 1/2 of an hr, rode her bike 3/4 of an hr how long did she exercise?=1 7/20 2.the intersest rate on an equity line of credit was 7 7/8% last month this month the interset rate is 10 3/2% how many percentage points has

    asked by p on September 19, 2009
  51. Chemistry

    A 0.446-gram sample of iron ore is dissolved in HCl and the iron (Fe solid) is reduced to Fe2+. The solution is then titrated by 38.6mL of 0.105 N KMn)4. Calculate the percentage of Fe in the iron ore sample.

    asked by Kayla on January 22, 2017
  52. chemistry

    3. Based on your answer in question 2, determine the percent error of your calculated specific heat capacity value of your unknown metal using the specific heat capacities of known metals below. Metal Specific Heat Capacity Nickel 0.440 Tin 0.210 Silver

    asked by lex on April 4, 2013
  53. computer graphics

    A pie chart needs to be drawn to show the percentage of total marks obtained by students. suppose 8%of studentss got 90% and above ; 52% got 75%to805 ; and 30% got 60% to 75%and remaing otained below 60%mark. no one failed .write an algorithm to drraw the

    asked by uday on July 15, 2011
  54. precalc

    Without further study, you forget things as time passes. A model of human memory gives the percentage, p, of acquired knowledge that a person retains after t weeks. The formula is p = (100 – a)e-bt + a, where a and b vary from one person to another. If a

    asked by Anonymous on August 31, 2010
  55. Chemistry

    A solid sample containing a simple mixture of NaHSO3 and Na2SO3 was dissolved in distilled water and titrated with a standard HCl solution. 13.88 mL was required to reach the first stoichiometric point, and an additional 45.12 mL to reach the second. What

    asked by Silver on December 7, 2010
  56. CHEMISTRY: URGENT

    30cm^3 of a mixture of methane and ethane were mixed with 100cm^3 of oxygen at ordinary temperature and pressure and exploded. After cooling the residual gases occupied 61.5cm^3. Find the percentage by volume of each gas in the mixture, methane (CH4) and

    asked by LC on October 30, 2012
  57. Math - Probability

    19. On the 24th of December for the past 10 years it has snowed eight times. What is the chance for snow this next December 24? 20. Congressman X is up for his 6th term. Thus far in five elections he has won by 58,56,62,70, and 54 percent. On this basis of

    asked by Sarah on December 3, 2014
  58. hi ms.sue

    About what percentage of southeast asian countries are islands? A)50% B)10% C)70% D)80% my choice is a. early cultures devolped in southeast asia through: A)extensive marititme trade B)isolated pockets of ethnic devolpment C)contact with europeans traders

    asked by henry on October 6, 2009
  59. chemistry

    How would I make 500 ml's of a .35M NaCI solution. MW= 58.44 ( I know how to do the first part) How many micromoles of NaCI would be present in that solution? What would be the percentage of NaCI in that solution?

    asked by frank on August 27, 2014
  60. Chemistry

    12.976 g of lead combines with 2.004 g of oxygen to form PbO2 . PbO2 can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in PbO2 is 13.38%. With the help of given information,illustrate the law of constant

    asked by Kien on June 17, 2018
  61. Chemistry

    39.8g of a mixture of Potassium chloride, KCl, and Potassium trioxochlorate (v) KClO3, were heated to a constant mass.If the residue weighed 28.9g, what was the percentage of Potassium chloride in the mixture? (O=16,Cl=35.5,K=39)

    asked by Chuk on September 12, 2018
  62. Statistics

    In a certain population of clover, the number of flowers on each plant is approximately normally distributed with a mean of 10.8 flowers/plant and a standard deviation of 2.1 flowers/plant. What percentage of the plants fall between 8 and 11 flowers?

    asked by Keisha on March 8, 2014
  63. chemistry

    if the mass of protons are halved and that of neutrons doubled to that of the actual values, what percentage change would have been found in the atomic mass of chromium whose actual atomic mass is 52.

    asked by jaya on May 5, 2010
  64. math

    Gregg has made 40% of his free-throw shots, after attempting 20 shots at a free-throw competition. How many more consecutive shots must he make in order to increase his percentage to 50%?

    asked by Anonymous on October 18, 2016
  65. Math

    Chelsea had made six of seventeen free-throw attempts. How many consecutive free throws must she make to raise her percentage of free throws made to exactly 50 percent?

    asked by Tammy on September 30, 2012
  66. Math (Pre-Cal) (Exponential Functions)

    A car was valued at $38,000 in the year 2003. The value depreciated to $11,000 by the year 2009. Assume that the car value continues to drop by the same percentage. -What will the value be in the year 2013?

    asked by Ray on February 19, 2016
  67. Science please help

    Draw Bohr diagrams of a magnesium atom bonding with fluorine atoms. Draw atoms then electron transfer and finally the ions that form. What type of bonding occurs? Draw Bohr diagrams of 2 hyrdogen atoms bonding with an oxygen atom by sharing electrons to

    asked by Anonymous on March 3, 2014
  68. Chemistry

    What volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia? (assume constant temprature and pressure) Balanced equation- N2 + 3H2= 2NH3 After finding this answer, what volum of ammonia is produced in this reaction? 1.

    asked by Kylen on January 28, 2007
  69. Science, please help!

    Please check my answer! Fill in the blank for below: Resources that cannot be replaced in the environment once they are used are _____. renewable resources compost nonrenewable resources I think the answer is nonrenewable resources.I might be incorrect, so

    asked by Nora on January 22, 2018
  70. chemistry

    A sample of hematite Fe2O3 has the mass 4.83 x 10 3 kg. a. how much iron (kg) can be extracted from this sample of hematite? b. what is the percentage of iron in this ore?

    asked by Jillian on April 12, 2013
  71. math

    Two articles are bought at the same price. one is sold at 20% profit and other is sold at 10% loss find overall profit /loss percentage.

    asked by vipul on June 26, 2016
  72. Math

    If a mixture requires 2 parts water to 3 parts of alcohol what percentage of mixture is water. How do I work this problem?

    asked by Timmy on February 1, 2010
  73. Chemistry

    What is the percentage of the S enantiomer in a sample of carvone that has a specific rotation of 30, given that the specific rotation of (R)-carvone is -61? How do i set up the problem?

    asked by Anonymous on October 22, 2014
  74. MATH

    A Company has 42 employees with degrees. twenty-nine of them have only High School diplomas. What percentage of these have high school diplomas.

    asked by booker on October 29, 2012
  75. Chemistry

    Ammonium nitrate is an oxidizing agent and can give rise to explosive mixtures of mixture of two moles of powdered aluminum and 3 moles of ammonium nitrate crystals react exothermically yielding nitrogen gas water vapor and aluminum oxide how many grams of

    asked by Cindy on December 11, 2016
  76. US history

    Which of the following statements about the Social Security Act is NOT true? 1. It was based on a progressive tax that took a larger percentage of higher incomes. 2. It provided old-age pensions. 3. It was, according to Roosevelt, the “supreme

    asked by HM on November 13, 2011
  77. US history HELP

    Which of the following statements about the Social Security Act is NOT true? 1. It was based on a progressive tax that took a larger percentage of higher incomes. 2. It provided old-age pensions. 3. It was, according to Roosevelt, the “supreme

    asked by HM on November 13, 2011
  78. Pie Charts

    On the pie chart it reads: 1999 U.S. Electricity Generation by Fuel Type (Billion Kilowat hours) Coal: 1882, 51% Natural Gas:565 15.3% Petroleum: 119, 3.2% Nuclear: 728, 19.7% Hydroelectric: 307, 8.3% Other Renewables: 89, 2.5% What was the total amount of

    asked by Jake on December 14, 2012
  79. Chemistry

    N2(g) + 3 H2(g) → 2 NH3(g) [balanced] If 5.42 g of nitrogen gas are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant? Use the molar mass data below if necessary. Molar mass of N2 = 28.02 g/mol Molar mass of H2 = 2.02

    asked by Jennifer on February 21, 2017
  80. chemistry

    N2(g) + 3 H2(g) → 2 NH3(g) [balanced] If 5.42 g of nitrogen gas are reacted with 5.42 g of hydrogen gas, which of the reactants is the limiting reactant? Use the molar mass data below if necessary. Molar mass of N2 = 28.02 g/mol Molar mass of H2 = 2.02

    asked by Jennifer on February 21, 2017
  81. math

    What percentage of 13,000.00 is 8,000.00

    asked by dan on March 24, 2011
  82. Statistics

    Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were

    asked by John on June 14, 2010
  83. Finance

    Suppose a Midwest Telephone and Telegraph (MTT) Company bond, maturing in 1 year, can be purchased today for $975. Assuming that the bond is held until maturity, the investor will receive $1,000 (principal) plus 6 percent interest (that is, 0.06 3 $1,000 5

    asked by Greatdanelola on September 21, 2008
  84. FINANCE

    Suppose a Midwest Telephone and Telegraph (MTT) Company bond, maturing in 1 year, can be purchased today for $975. Assuming that the bond is held until maturity, the investor will receive $1,000 (principal) plus 6 percent interest (that is, 0.06 3 $1,000 5

    asked by JUAN on December 22, 2008
  85. math214

    I have no clue how to answer this question. A farmer has a square plot of land. An irrigation system can be installed with the option of one large circular sprinkler, or nine small sprinklers. The farmer wants to know which plan will provide water to the

    asked by alicia on March 2, 2010
  86. Statistics

    Let x be the elevation (in thousands of feet) for an archaeological site in the southwestern United States. Let y be the percentage of unidentified artifacts (no specific cultural affiliation) at a given elevation. Suppose that the following data were

    asked by John on June 15, 2010
  87. Mat126: Survery of Mathematics

    In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading. As you answer the questions above, identify what types of misrepresentation or misuse have been

    asked by Leslie on September 20, 2011
  88. Survey of Mathematics

    In a recent article, the author states that 71% of adults do not use sunscreen. Although 71% is a large percentage, explain why it could be misleading. As you answer the questions above, identify what types of misrepresentation or misuse have been

    asked by Leslie on September 18, 2011
  89. Financial

    Suppose a Midwest Telephone and Telegraph (MTT) Company bond, maturing in 1 year, can be purchased today for $975. Assuming that the bond is held until maturity, the investor will receive $1,000 (principal) plus 6 percent interest (that is, 0.06 3 $1,000 5

    asked by SAM on September 7, 2008
  90. african american studies

    Slavery and Society, 1800-1860 1. What invention contributed to the need for more slaves in the late 18th century? 2. What region of the United States was slavery most prominent? 3. What percentage of US exports was based on cotton production? 4. Describe

    asked by yessica bonilla on March 4, 2014
  91. Math

    Posted by Lance on Friday, April 27, 2007 at 9:47pm in response to math. please give us one set of numbers so we can work an example for you. What was the percentage increase in motor vehicle production in countries outside the United States from 1950 –

    asked by Sissy on April 28, 2007
  92. Physics

    The center of a 1.50 diameter spherical pocket of oil is 1.20 beneath the Earth's surface. Estimate by what percentage directly above the pocket of oil would differ from the expected value of for a uniform Earth? Assume the density of oil is 800 kg/m^3.

    asked by Mandy on March 17, 2011
  93. physics

    The center of a 1.00km diameter spherical pocket of oil is 1.00kkm beneath the Earth's surface. Estimate by what percentage g directly above the pocket of oil would differ from the expected value of for a uniform Earth? Assume the density of oil is

    asked by katie bornia on October 23, 2016
  94. finance

    8. Calculate the return on investment in dollars and as a percentage for an investment that you purchase for $500 and sell for $600. (2.0 points) TIP: If you don't remember how to calculate return on investment, review the Calculating ROI pages in Section

    asked by RedHeadedStepChild on March 8, 2016
  95. Physics

    The center of a 1.50 diameter spherical pocket of oil is 1.20 beneath the Earth's surface. Estimate by what percentage directly above the pocket of oil would differ from the expected value of for a uniform Earth? Assume the density of oil is 800 kg/m^3.

    asked by Mandy on March 18, 2011
  96. statistics

    A comprehensive study of orphaned children is conducted in every orphanage in Australia. A scale called the Capacity for Attachment Scale is given to all orphaned children. The mean (μ) of the scale is 72 and the standard deviation (σ) is 13. Assuming

    asked by Alicia Estrada on February 24, 2015
  97. Chemical Equations

    Starting with nitrogen and hydrogen, millions of kilograms of ammonia are produced every year for use as a fertilizer. Use this info to answer the next 3 questions. Communicate the balanced chemical equation using molecular models. Communicate the balanced

    asked by Fizzylicous on December 3, 2011
  98. Math

    Consider the weighted voting system [75: 31, 29, 23, 16, 8, 7]. Find each: a. The total number of players b. The total number of votes c. The weight of P3 d. The minimum percentage of the votes needed to pass a motion 9rounded to the next whole percent)

    asked by Meredith on July 27, 2012
  99. Investments

    P4.3 Assuming you purchased a share of stock for $50 one year ago, sold it today for $60, and during the year received three dividend payments totaling $2.70, calculated the following: (a) Income (b) Capital Gain (or loss) (c) Total Return in Dollars (d)

    asked by Megan on April 24, 2014
  100. Maths

    From experience, Mr Subbu has found that the low bid on a construction job can be regarded as a random variable having the uniform density f(x)= 0.75C 2C/3

    asked by Nithi on August 19, 2014