Newest questions posted by jerome
  1. Math

    Why can't shapes have 2 sides?
  2. Math; Statistic

    At peak periods, 15% of attempted log-ins to an email service fail. Log-ins attempts are independent and each has the same probability of failing. Ann logs in repeatedly until she succeeds. A. find the probability that Ann needs to log in at least four
  3. math

    Pamela is 8 yrs younger than John. In 5 yrs the sum of their ages will be 40. What is their present ages
  4. high school chemistry

    You are going to titrate 20 mL of .10M HCL with 0.10M NaOH. What is the pH at the equivalence point. How do I figure out the equivalence point when I have already figured out that the initial pH of the HCL and NaOH are both 1?
  5. Math

    a box of pencils cost the same as 11 erasers and 7 pencils. a box of erasers cost the same as 6 erasers and a pencil. a box of empty boxes and an erasers cost the same as a pencil. given that boxes cost a penny and each of the boxes contain an equal number
  6. math

    a company has 2 offfices that holds 30000 employees. the head quarters holds 14 times as many people that their overseas branch. How many people are at HQ
  7. Science

    The speed of light in a plastic material is 1.4 x 10^8. What is the index of refraction of the material?
  8. Math

    Zachary traveled from city A to city B. He left city A at 7:30 a.m. and reached city B at 12 noon. Find the average speed if city B is 180 miles away from city A.
  9. math

    The width of a rectangle is (5x-7). Find the polynomial equation reppresenting the area of the rectangle if its lenght is three more than four times as long as its width
  10. Algebra 2

    Can someone help me solve this problem please? The directions are to simplify the logarithm: log5(a + 2) + log5(a – 2)
  11. economics

    Assume that average product for six workers is fifteen. If the marginal product of the seventh worker is eighteen, what is the average product of the seventh worker?
  12. economics

    Assume that average product for six workers is fifteen. If the marginal product of the seventh worker is eighteen, what is the average product of the seventh worker?
  13. microeconomics

    Assume that average product for six workers is fifteen. If the marginal product of the seventh worker is eighteen, what is the average product of the seventh worker?
  14. probability

    Spaceman Spiff’s spacecraft has a warning light that is supposed to switch on when the freem blasters are overheated. Let W be the event “the warning light is switched on” and F “the freem blasters are overheated”. Suppose the probability of
  15. chemistry

    Given the equation Ag^+(aq) + 2NH3 (aq) -> [Ag(NH3)2]^+ (aq) kf= 2 x 10^7 determine the concentration of NH3(aq) that is required to dissolve 415 mg of AgCl(s) in 100.0 mL of solution. The Ksp of AgCl is 1.77× 10–10.
  16. math

    Solve for X and Y: 2^x=8^1+y And (x+2y)(x-y)=0
  17. Physics

    Which of the following are the correct units for mass?
  18. physics

    question: your propessor enters a dogsled race during the winter break to get started she pulls the sled (total mass 80kg) with a force of 180N at 20degrees the sled moves 5m along horizontal. find the work she does find the final speed of the sled after
  19. electronics

    approximate I from a graph of current/time for a discharging capacitor. no idea on this, obviously you cant see the graph, but you don't need to, id just like to know how to approximate this from a graph.
  20. electronics

    Using wheatstone bridge where R1=top left R2=top right R3=bottom left RT(thermistor 2.11spec)=bottom right. R1=2.2kohm R3=8.2Kohm. must have 0 output at 0degC calculate the required value of R2. Thermistor specs: resistance @ 20degC=2K 25degC=1.68K
  21. maths

    compplex numbers multiplying complex and not: 3*(6-j8) also, 3+(6-J8)
  22. mathematics

    find the mean and RMS of v=25sin50πt over the range t=0 to t=20ms using integration. i have integrated to: v=-cos(50πt)/2π+c but i don't know how to get the mean and rms.
  23. chemistry

    What is the final volume of NaOH solution prepared from 250.0mL of 0.800M NaOH if you wanted the final concentration to be 0.200M
  24. statistics

    According to the Journal of the American Medical Association, the doctors found that in the week before and the week after Thanksgiving, there were 12,000 total deaths and 6062 of them occurred in the week before Thanksgiving. Construct a 95% confidence
  25. statistics

    The National Highway Traffic Safety Administration analyzes the crash test data for new cars. One variable measured is the severity of the injury due to a collision. The higher the severity, the higher the points assigned. Assume that the injury rating is
  26. Statistics

    According to the American Automobile Association (AAA), the mean cost of a gallon of regular unleaded fuel in 2007 was $2.835. AAA noted that the standard deviation of the fuel price was $0.15. A random sample of n=100 gas stations is selected and the mean
  27. Math

    I made a 95 on a test of 20 questions, but it took 35 tries. What is my real grade?
  28. math

    A round tank hold 550 gallons filled to the brim. Its capacity is 10 gallons for every inch in height. How high is the tank in inches, in feet. How high would you fill it get to the 170 gallon level?
  29. axia

    a=p(1+r)^n p=$4000,r=0.10, and n=2years at the end of 2 years A is
  30. math

    13 cents for A 12 cents for B. total protein greater than twelve grams. Total fat less than eight grams. Total grams less than thirty five grams. .5 grams protein and .3 grams fat for A. .6 grams protein and .2 grams fat for B. what is optimal cost
  31. Business 100

    select an organization with which you are familiar and discuss the impact of that organization's level of social responsibility on a stakeholder group of your choice
  32. Microbiology

    How are algae harmful to humans?
  33. math

    the area of triangle wxz in the diagram below is 48 cm2. what is the perieter in centieters of triangle wxz
  34. Statistic

    You are the microbiologist at a national food processing chain. Two independent subcontractors are bidding to produce your latest food item that should really boost sales. It is your job to determine which plant should get the bid based on their microbial
  35. Statistic

    You have been screening compounds with the Ames test to determine if they are mutagenic. If a compound is mutagenic, more colonies will grow in the presence of the mutagen. You have obtained the following data from triplicate samples: Number of mutant
  36. Statistic

    Your microbrewery is not producing beer quickly enough. You have been conducting an experiment on the relative growth rate of the two yeast types by measuring the turbidity, using absorbance units, of the growth medium. You obtained the following two data
  37. Biology

    Explain how skin, bones and muscles are related to each other and Why is this relationship important to the understanding of the skeletal and muscular systems?
  38. biology

    Propose a reason why you would see several differences between different slides of skin
  39. Biology

    If all nerves respond to stimuli why can’t your eyes “hear” sound and your ears “see” light?
  40. Biology

    If the doctor presses on the right hypochondriac region, what organ is the doctor likely pressing on?
  41. Biology

    Why is proper microscope technique important for studying Anatomy and Physiology?
  42. Microscope

    True or False? Resolution decreases as the amount of light coming in on the object increases?
  43. Biology

    Which of the following organs would not be visible if you cut the body in a mid-sagittal section? Explain? a. Brain b. stomach c. heart d. kidneys
  44. Biology

    I just want to know if my answers are right for this folowing: 1. The nose is MEDIAL to the ears. 2. The elbow is DISTAL to the shoulder and PROXIMAL to the wrist. 3. The heart is ANTERIOR to the spine. 4. The stomach is DEEP to the ribs. 5. The pinky
  45. Physics 1

    Chap. 11, #16. (II) A 0.60-kg mass vibrates according to the equation where x is in meters and t is in seconds. Determine (a) the amplitude, (b) the frequency, (c) the total energy, and (d) the kinetic energy and potential energies when x =
  46. Physics 1

    (II) How close to the edge of the 20.0-kg table shown in Fig. 9–47 can a 66.0-kg person sit without tipping it over?
  47. Biology

    Briefly describe what effect you expect each of the following variables to have on enzymatic activity. 1. pH of 3.0 2. decrease in temperature 3. increase in substrate concentration 4. increase in enzyme concentration 5. addition of phenylthiourea(PTU)
  48. Math/ Physiology

    Why must your line intersect the origin of the graph ( zero concentration equals zero absorbance)? Explain
  49. Math/ Physiology

    Why do you draw a linear graph of absorbance versus concentration even though your experimental values deviated slightly from a straight line?
  50. College Algebra

    Solve: x^2e^x+x e^x-e^x=0
  51. statistics

    which has a larger standard deviation: the distribution of weekly allowances to 12-year olds or the distribution of monthly household mortgage payments?
  52. chemistry

    How many moles of ammonia gas can be produced from the reaction of 3.0L of N2 and 3.0L of H2 according to the following equation: N2(g) + 3H2(g)---> 2NH3(g)?
  53. ENG-1B

    Is the climax on "The Story of an Hour by Kate Chopin artistically effective?Explain in 7 to 10 sentences
  54. Physiology

    Name a disease caused by a defect in the mitochondria and describe the symptoms. In both cases, the disease may refer to a structural defect in the organelle, or some type of abnormal activity that takes place inside the organelle.
  55. Physiology

    Name a disease caused by a defect in the lysosome and describe the symptoms.
  56. Physiology

    Indicate whether the following circumstances would tend to increase, decrease or have no effect on the rate of enzyme activity. 1.adding more substrate but keeping the amount of enzyme of the same 2.adding more enzyme but keeping the amount of substrate
  57. Physiology

    Anesthetics such as ether, chloroform and nitrous oxide reduce responsiveness of cells by blocking ion channels and altering other properties of cells. What chemical property of these molecules enables them to easily enter cells?
  58. Physiology

    Prostaglandins are formed as part of the inflammatory response, and are often formed after a cell has been damaged. From what cell organelle are prostaglandins formed?
  59. Physiology

    Why do cells tend to die if their lysosomes are damaged and break open?
  60. Physiology

    The muscle cells of a trained athlete tend to have more mitochondria than those of a couch potato. Why?
  61. Physiology

    Briefly answer the question about cellular processes. (Hint: think about the function of the cell in question.) Cells in the pancreas, which makes a lot of digestive enzymes, tend to have a lot of rough endoplasmic reticulum. Why?
  62. english-1B

    Is the climax on "The Story of an Hour by Kate Chopin artistically effective?Explain in 7 to 10 sentences.
  63. Physiology

    What is the volume of 0.23 kg of pure water?
  64. Physiology

    Pure gold has a density of 19 g/ml. If you bought a gold ring and found it had a volume of 0.3 ml and it weighed 5.7 grams, is it real gold? Show me your calculation
  65. Chemistry

    Experiment on Titration of Acids and Bases Suppose some deionized water was left in the buret before it was filled with the oxalic acid solution you were using as a primary standard. When you perform the standardization of sodium hydroxide in Part 3, how
  66. Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1
  67. Chemistry

    As one descends group 6A of the periodic table, the number of valence electrons found in each element A. Increases B. Decreases C. Remains the same
  68. Chemistry

    Which is not a ground state electron configuration? A. 1s2 B. 1s2 2p1 C. 1s2 2s2 D. 1s2 2s2 2p1
  69. Chemistry Help Pls!!!

    A 21.18 mL of 0.250 M NaOH is titrated with a H2SO4 solution. The initial volume of H2SO4 was 13.28 and the final volume of H2SO4 was 28.29 mL when the solution turned very slightly pink. What is the concentration of NaOH?
  70. Chemistry

    In the reaction: P4 (S) +Cl2 (g)PCl5(s), 1. If you have 10.00 grams of Phosphorus to react with 220 grams of Chlorine gas, what would be the theoretical yield of PCl5(s), in grams? 2. Why was there condensation of the beaker of cold water when a
  71. Financial Math

    Initial deposit of $1100.00 on June 1. APR of 2.0%. What is the amount of interest earned on December 31? What is new balance?
  72. Physics - Standing Waves

    a) A plot of lnv vs. lnT should be a straight line. Why? b) What is the slope of the straight line? c) What is the intercept of the straight line?
  73. Physics

    A string is under a tension of 700.0 N. A 1.5 m length of the string has a mass of 4.5 grams. What is the speed of a transverse wave of wavelength 0.50 m in this string? What is the frequency of the wave?
  74. financial management

    What role do present value and future value have in the management of an organization?
  75. chemistry

    In the balanced equation MnO2 + 4HCl = MnCl4 +2H2O, how many moles of MnCl2 will be produced when 1.25 mol of H2O are formed?
  76. counseling

    What do the following scores (Standard score of 130, a T-score of 70, and z score of 2 and a stanine of 9) have in common
  77. Math 115

    Which number shown in parentheses is a solution of the given equation? A)1/3x+5=7 (6) B)1/3x+5=7 (9) C)2/3x+5=7 (9) D)2/3x+5=7 (6) would the correct answer be C
  78. Math 115

    -3/5+(8/35)= 2+4.375=6.375 Is this correct? 1Kilogram= 35.2739619ounces 2.1Kg= 2.1=35.274= 74.0754 nearest hundredth would be 0.800 is this correct?
  79. Math 115

    18Kg=_____g 1,000g+8,000g=9,000g Is this correct
  80. Math 115

    Still can't figure this out 2.1kg=_____oz (Round to the nearest hundredth)
  81. Math 115

    Please check answers 461mm=_____m answer 461/1000=0.461m Second one 20lb= 320oz 20lbs*16ounces= 320oz
  82. Math 115

    I need help with these problems 1. 18kg=______g I don't understand this. 2.1kg=______oz. can't figure this out. 3.20lb=______oz can't figure this out. 4.461mm=______m don't know where to begin. Can some please help me understand these problems.
  83. Math 115

    Please check answer. The sale tax rate in a state is 7.5%. If you pay a tax of $17.50 on an item that you purchase, what is its selling price? 17.50*7.5=$131.25 is this correct?
  84. Math 115

    How do convert 4 7/8 into a percentage. Is tis correct 7/8=0.875*4=3.5%
  85. Math 115

    Is the following set of numbers a perfect triple? 8, 10, 12. (2)Add -3/5+(8/35) (3).Which of the following are not like terms? (A)2b and 2b,(B)3c and 2c,(C)2b and 3b,(D)2b and 2c. Which number shown in parentheses is a soultion of the given equation?
  86. Math 115

    How do perform the indicated operation.15/13-13/15
  87. Math 115

    I need some help on 2 anwers 1)is the following set of numbers a perfect triple? 8, 10,and 12. 2)Which pair of fractions is proportional (A)0.6/0.3=?3/18,(B)0.6/0.3=?2.4,(C)0.6/0.3=?2.4/1.8, (D)0.6/0.3=?3/15
  88. Geomerty

    Place the following set of numbers in ascending order -2/9,5/9,1/8,-1/9,3/7 Would the correct order be 1/8,2/9,1/8,3/7,5/9
  89. Statistics

    The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland. Because of its archeological importance, Tara has received extensive study (Reference: Tara: An Archeological survey by Conor
  90. Statistics

    The archeological site of Tara is more than 4000 years old. Tradition states that Tara was the seat of the high kings of Ireland. Because of its archeological importance, Tara has received extensive study (Reference: Tara: An Archeological survey by Conor
  91. social studies

  92. math (algebra).

    Graph the equation and identify the y-intercept. y= _1_ 3 x
  93. chemistry

    The correct interpretation of the equation below is: Fe3+(aq) + SCN–(aq) --> FeSCN2+(aq) A. At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. B. The equilibrium constant is Kc = [Fe3+][SCN–][FeSCN2+] C. A