Popular questions and responses by karen
  1. english

    Which words/phrase in this sentence is misplaced? Having been discovered, Rover looked up at his owner with puppy-dog eyes. a. with puppy-dog eyes b. been discovered c. his owner d. rover looked up I am torn between (a.) and (c.). Since the answer (c.)

    asked on January 28, 2011
  2. math

    please help! 1.) A random digit from 1 to 9 (inclusive) is chosen, with all digits being equally likely. The probability that when it's squared it will end with the digit 1. 2.) A random number between 1 and 20 (inclusive) is chosen. The probability that

    asked on August 11, 2012
  3. english

    Which group of words in the sentence is misplaced? Having been discovered, Rover looked up at his owner with puppy-dog eyes. a. with puppy-dog eyes b. been discovered c. his owner d. Rover looked up

    asked on October 31, 2010
  4. chemistry

    Write the balanced equation for the neutralization reaction between H3PO4 and NaOH in aqueous solution. Phases are optional.

    asked on May 14, 2014
  5. Chemistry

    What are the three essential parts to make a battery? Cell reducing agent acid fuse porous barrier or salt bridge voltage regulator oxidizing agent

    asked on May 14, 2014
  6. probability

    please help! 1.) A random digit from 1 to 9 (inclusive) is chosen, with all digits being equally likely. The probability that when it's squared it will end with the digit 1. 2.) A random number between 1 and 20 (inclusive) is chosen. The probability that

    asked on August 11, 2012
  7. chemistry

    for the reaction S2F6 (g) 2SF2(g), the equilibrium concentrations are as follows: [S26]=0.000430M, [SF2]=2.08 M, [F2]=1.32M. the equilibrium constant is

    asked on November 13, 2011
  8. Whatzit puzzle

    more it it thani

    asked on September 9, 2011
  9. statistics

    Given the following scatter diagram , the sample correlation coefficient r: Has a positive linear correlation Has a negative linear correlation. Has little or no correlation. Looks close to + 1.00

    asked on August 19, 2010
  10. Algebra 2

    E6------E= -0.378eV E5------E= -0.544eV E4------E= -0.850eV E3------E= -1.51eV E2------E= -3.40eV Use the figure shown above to determine how much energy a hydrogen atom with its electron in the E2 energy level must absorb for the electron to be removed

    asked on April 24, 2017
  11. Statistics

    A recent survey found that 70% of all adults over 50 wear glasses for driving. You randomly select 30 adults over 50, and ask if he or she wears glasses. Decide whether you can use the normal distribution to approximate the binomial distribution. If so,

    asked on February 16, 2013
  12. statistics

    A jar contains 2 pennies, 6 nickels and 4 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins. a. Find the probability X = 11. b. Find the expected value of X

    asked on April 13, 2019
  13. Biochemistry

    What is the condensed structural formula of cyclopropane?

    asked on August 21, 2017
  14. Mathematics

    The product of two natural numbers must be a natural number

    asked on August 7, 2020
  15. Calculus-Math

    The ordering and transportation cost C for components used in a manufacturing process is approximated by the function below, where C is measured in thousands of dollars and x is the order size in hundreds. C(x) = 12((1/x)+((x)/(x+3))) (a) Verify that C(2)

    asked on September 15, 2014
  16. algebra

    please help! The following equation can be used to predict the average height of boys anywhere between birth and 15 years old: y = 2.79x +25.64 where x is the age (in years) and y is the height (in inches). a. What does the slope represent in this problem?

    asked on August 10, 2012
  17. Geometry

    Stephanie casts a shadow of 1.2m and she is 1.8m tall. A wind turbine casts a shadow of 10m at the same time that Stephanie measured her shadow. Draw a diagram of this situation and then calculate how tall the wind turbine is.

    asked on January 11, 2014
  18. Math

    A quadrilateral contains two equal sides measuring 12 cm each with an included right angle. If the measure of the third side is 8 cm and the angle opposite the right angle is 120 degrees, find the fourth side and the area of the quadrilateral.

    asked on February 2, 2015
  19. trig

    use a half-angle identity to find the exact value of tan 105 degrees.

    asked on July 22, 2013
  20. Chemistry

    If 4.39 g AlCl3 is dissolved in enough water to make exactly 100.0ml of a solution, what is the molar concentration of the chloride ion?

    asked on March 31, 2018
  21. math

    what is the effective interest rate of an 8% 13-week treasury bill? assume it is a $10,00 treasury bill, and round to the nearest hundredth percent

    asked on June 5, 2017
  22. economics

    When an economist says that a currency has become stronger, he or she means that a) it will buy less of foreign goods. b)it can be exchanged for more of a foreign currency. c)services, unlike goods, can be exported freely. d)there are very few things that

    asked on January 9, 2012
  23. Spanish 2

    Dear Profesora, Can you check my answers? 11 of 21 Grammar Questions: Choose the best answer to express the given statement or question. Creo que el poema ______________ por Pablo Neruda. escribió fue escrito** fuera escrito escriba unable to answer

    asked on August 13, 2015
  24. Accounting

    A credit to a liability account was posted to an owner's equity account. This would cause __________. A. assets to be overstated B. liabilities to be understated C. owner's equity to be understated D. net income to be overstated i think its D A credit to

    asked on February 21, 2015
  25. chemistry

    what is the volume of 62.3 g of nitrogen gas at STP

    asked on April 11, 2010
  26. statistics

    What is meant by the 95% confidence interval of the mean ? That 95% of my sample is OK to do more tests. That I am 95% confident that the confidence interval will contain the parameter being estimated. That 5% of my sample is not OK. That I am 95% sure

    asked on August 17, 2010
  27. Calculus

    Given f'(x)=(2-x)(6-x), determine the intervals on which f(x) is increasing or decreasing Options: 1) Decreasing (-∞,2); increasing on (6,∞) 2) Decreasing (2,6); increasing on (-∞,2)U(6,∞) 3) Decreasing (-∞,2)U(6,∞); increasing on (2,6) 4)

    asked on December 26, 2018
  28. Math

    when z is divided by 8, the remainder is 5. What is the remainder when 4z is divided by 8. Can you please explain this to me step by step? I'm having difficulty understanding why the answer is 4

    asked on January 26, 2017
  29. English

    The sky grew dark with the approaching storm clouds. grew is verb , but dark is adjective I believe. Would this still be a transitive verb?

    asked on November 3, 2014
  30. math

    anna bought 3 types of fruit for a fruit salad. She paid three times as much for buleberries as for pears and $2.50 less for strawberries than for blueberries. A) define a variable and write algebraic expressions to represent the amount she spent on each

    asked on November 24, 2012
  31. geometry

    M is the midpoint of JK. find the coordinates of K. 1. J (-8,4) M (-1,1) 2. J (9,-5) M (5, -2) 3. J (0,11) M (-3,2)

    asked on September 21, 2015
  32. Ap algebra

    Question 1: if a function is undefined at a point can that point be its domain. Explain Question 2: explain what is meant by the minimum value of a function

    asked on August 26, 2015
  33. math

    a bank teller has 54 in $5 and $20 bill s. the total value is $780. how many 5 dollars are there

    asked on February 7, 2013
  34. Physics

    You carry a 20 n box 5 m horizontally across a room. The work you do is? Is 4 J correct?

    asked on September 21, 2011
  35. Physics

    A 0.200-m uniform bar has a mass of 0.750 kg and is released from rest in the vertical position, as the drawing indicates. The spring is initially unstrained and has a spring constant of k = 25.0 N/m. Find the tangential speed with which end A strikes the

    asked on June 9, 2011
  36. eco

    Assume that American rice sells for $100 per bushel, Japanese rice sells for 16,000 yen per bushel, and the nominal exchange rate is 80 yen per dollar. Suppose that rice is the only commodity in the world. What would happen to the real exchange rate

    asked on November 19, 2008
  37. Math

    A Texas oil drilling company has determined that it costs $25,000 to sink a test well. If oil is hit, the revenue for the company will be $500,000. If natural gas is found, the revenue will be $150,000. If the probability of hitting oil is 3% and of

    asked on August 2, 2017
  38. Accounting 220

    On January 1, 2014, Muoy Machining Co. purchased a compressor and related installation equipment for $72,500. The equipment had a three-year estimated life with a $12,500 salvage value. Straight-line depreciation was used

    asked on April 30, 2016
  39. Physics

    The tortoise and the hare are in a race of 1000m distance. The tortoise travels the entire race at a speed of 2.0 m/s while the rabbit runs the first 200 m @ 2.0 m/s. Then he stops to take nap for 1.3 hrs and awakens to finish the last 800m with an average

    asked on September 22, 2015
  40. Tsi math

    A rectangular room measures 20 by 7 feet Find the cost of installing a strip of wallpaper around the room if the wallpaper costs $0.98

    asked on March 20, 2015
  41. Trigonometry

    Solve the equation, where 0° ≤ x < 360°. Round approximate solutions to the nearest tenth of a degree. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 3 sin x − 3 cos x = 1

    asked on October 22, 2014
  42. Calculus

    Find an equation of the tangent line to the graph of the function f through the point (x0, y0) not on the graph. To find the point of tangency (x, y) on the graph of f, solve the following equation of f '(x). f '(x) = y0 − y/x0 − x f(x) = √x (x0, y0)

    asked on August 4, 2014
  43. Physics

    A student performs a ballistic pendulum experiment using an apparatus similar to that shown in the figure. Initially the bullet is fired at the block while the block is at rest (at its lowest swing point). After the bullet hits the block, the block rises

    asked on February 20, 2014
  44. Chemistry

    HC8H4O4K + NaOH = H2O + H4C8O4KNa I'm given the volume of NaOH in mL (ex: 9.11 mL), and I have to convert it to moles. How can I do that conversion? Please help by explaining if you can, I've had trouble with this problem for the whole week..

    asked on October 7, 2012
  45. ECE

    At which grade level is it most appropriate for children to group by more than one attribute? A. Primary B. Kindergarten C.Four years old D.Preschool

    asked on August 8, 2011
  46. Statistics

    Studies find a negative correlation between hours spent watching television and scores on reading tests. Does watching television make people less able to read? Probably, but this doesn't follow from the data. The studies are observational, and it might be

    asked on April 14, 2009
  47. Math

    A shoe box is an example of what geometric solid?

    asked on March 22, 2009
  48. Ap Calculus

    Find the area of the region bounded by the curves y=x^2-1 and y=cos(x). Give your answer correct to 2 decimal places

    asked on February 13, 2019
  49. Calculus

    If f is a function such that (f(b) - f(a))/(b-a) =2, then which of the following statements must be true a) f(a) = f(b) =2 b) the slope of the tangent line to the function at x =a is 2 c) The average rate of change of the function on the interval [a,b] is

    asked on December 20, 2018
  50. chemistry

    Calculate the concentration of all species in a 0.20 M KF solution.

    asked on March 7, 2017
  51. Math

    Two ships leave port at 4 p.m. One is headed N38°E and is travelling at 11.5 km/h. The other is travelling at 13 km/h, with heading S47°E. How far apart are the two ships at 6 p.m.? i am in grade 11 :), studying ahead of the class :) its 8 pm here, this

    asked on January 3, 2016
  52. Math

    using four different digits, what is the least sum you can get when you add two 2-digit numbers? Write your problem

    asked on September 22, 2014
  53. english 3 A

    Which one of the following is not an example of Puritan literature? A. Magnalia Christi Americana B. The Sot-Weed Factor C. The Bay Psalm Book D. The Day of Doom

    asked on October 18, 2012
  54. statistics

    Find the sample variance s2 for the following sample data. Round your answer to the nearest hundredth. x: 23 17 12 35 29

    asked on August 20, 2010
  55. math 2

    if r=5z, then 15z=3y, then r= ?

    asked on April 10, 2010
  56. math

    How do I convert the polar equation r - 3cos(theta) = 5sin to cartesian equation form?

    asked on March 22, 2010
  57. Math

    You deposit $1000 in an account at the Lifelong Trust Savings and Loan that pays 7% interest compounded quarterly. By how much will your deposit have grown after 4 years?

    asked on March 9, 2009
  58. math

    write an equation in general form with no y-intercept and passes through (3,6)

    asked on May 6, 2020
  59. Physics

    How long does a car with an acceleration of 2.0 m/s2 take to go from 10 m/s to 30 m/s a. 3 m b. 6 m c. 18 m d. 36 m

    asked on December 8, 2016
  60. Stoichiometry

    Equation to use Al + Cl2 -> AlCl3 You have 8.6 moles of aluminum, how much in moles of chlorine do you need to react completely? Desperate. Trying to teach daughter on the spectrum and I'm stumped on how to start.

    asked on November 13, 2016
  61. Math

    For every 5 highlighters that Agnes buys , she gets 1 free. If Agnes needs 80 highlighters, what is the least number of highlighters she has to buy?

    asked on November 12, 2016
  62. Math

    During summer vacation, Sanjay writes letters and postcards to his friends at home. A letter costs $0.41 to mail and a postcard costs $0.21 to mail. Sanjay writes to 8 friends and spends $2.08. How many letters and postcards he sends.

    asked on September 18, 2016
  63. Statistics

    A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of service calls is as follows: one column has number of service calls (X) those numbers are 0 1 2 3 4 5. The next column Probability P

    asked on February 13, 2016
  64. 6th Grade Math

    Caleb sold boxes of candy. Some sold for $2, and some sold for $3. He sold a total of 35 boxes and received $92. How many boxes did he sell for $2?

    asked on October 7, 2015
  65. Physics

    Nitrogen boils at -196°C. What is the corresponding temperature in the Fahrenheit scale? A) -290°F B) -346°F C) -315°F D) -196°F E) -321°F

    asked on September 9, 2015
  66. ela

    1. what is the ordered pattern of rhymes at the ends of lines of a poem or a verse called?

    asked on March 21, 2015
  67. Chemistry

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 10.9 g, and its initial temperature is -12.0 °C. The water resulting from the melted ice reaches the temperature of your skin, 29.6 °C. How much

    asked on April 12, 2014
  68. Psychology

    Marvin collects things, not cars, or baseball cards, or even beer bottles. Marvin collects everything. He cannot seem to stop picking up "stuff" from the street or dumpsters. If he attempts to pass by a target for collection, he is overwhelmed with tension

    asked on July 26, 2013
  69. physics

    A human hair is approximately 55 µm in diameter. Express this diameter in meters. Answer in units of m

    asked on October 22, 2012
  70. English

    Do you capitalize mom in the phrase your mom?

    asked on February 27, 2012
  71. College Hca 210

    Write a 350- to 700-word paper on one of the following laws: HIPAA (1996) or EMTALA (1986). Pretend you are a health care manager employed at a small community hospital responsible for educating your staff about HIPAA (1996) or EMTALA (1986). Include the

    asked on January 30, 2012
  72. Geometry

    what is the supplement of B if B=(3x-16)?

    asked on November 6, 2010
  73. Social Studies

    Does anyone know of any words from the Medieval times that starts with the letter "O"?

    asked on May 1, 2010
  74. Corprate Finance

    An initial investment of $400,000 will produce an end of year cash flow of $480,000. What is the NPV of the project at a discount rate of 20%?

    asked on April 23, 2010
  75. Microeconomics

    Consider public policy aimed at smoking a.) Studies indicate that the price elasticity of demand for cigarettes currently costs $2 and the government wants to reduce smoking by 20%, by how much should it increase the price? b.) If the government

    asked on October 21, 2009
  76. Math

    In rectangle MNPQ, the ratio of the length of MP is 4:5. a) Does this ratio tell you how long MN is? Explain. b) What if MN is 12cm long. How long is MP? Use a diagram to illustrate your answer. Show your work.

    asked on September 28, 2008
  77. Chemical Bonding

    Predict the type of bond present between carbon and suffer in vulcanized runbber? Is that ionic. Please tell me how I can figure out what bonds are present in different chemical reactions. Like phospherous nad oxygen in a DNA molecule.

    asked on January 14, 2007
  78. Math

    During a triathlon,sharon swims 1/4 of the total remaining route.She runs the rest of the route. If she runs 3600 meters ,find the total distance of the triathlon route.

    asked on November 18, 2019
  79. Calculus

    Find the range of the function F(x)= integral from negative 6 to x of √(36-t^2) dt

    asked on March 12, 2019
  80. Calculus

    Find the absolute maximum value for the function f(x)=x^2 - 3 , on the interval [-4,0) U (0,3]

    asked on December 26, 2018
  81. Calculus

    If f(x) is a continuous function defined for all real numbers, f(-1)=1, f(-5)=-10, and f(x)=0 for one and only one value of x, then which of the following could be that x value? a) -6 b) -5 c) -4 d) 0

    asked on December 20, 2018
  82. Chemistry

    How much heat is required to convert 9.00 g of water at 100°C into steam at 100°C, if ∆Hvap for water = 40.7 kJ/mol?

    asked on July 28, 2018
  83. science

    1. all of the life functions are carried out by cells in a living organisms in order to A. Perform Synthesis B. Maintain Homeostasis C. Keep an Internal steady state D. Both c and d 2. If an -------------------- were digested the product would be

    asked on March 17, 2018
  84. Chemistry

    29.25g of sodium chloride is added to water and undergoes electrolysis according to this equation 2Cl-=Cl2 Calculate the mass of chlorine produced. I am lost with this one !

    asked on December 3, 2017
  85. Math

    I need help, please find the exact value of 2log3 27+log3 (1/3)-log3 3^1/2 many thanks

    asked on October 10, 2017
  86. anthropology

    2 key differentiators and 2 examples of anthropology compared to history and sociology. I found the definitions of each- Cultural anthropology-study of living people and cultures and they actually live with the people they study Archaeology- a subclass of

    asked on September 26, 2017
  87. Statistics

    A random sample of size n is to be drawn from a population with a mean = 500 and sd = 100. What sample size would be necessary to ensure a standard error of 25? Sample sizes are whole numbers.

    asked on November 15, 2016
  88. Pre-Calculus

    The amount of force required to compress a spring is inversely proportional to the distance that it has been compressed. For one certain spring, it takes 5 pounds of force to compress it from its natural length of 18 inches down to 12 inches. How much

    asked on November 14, 2016
  89. math

    A bird beats it's wing 24 times per second. How many times will it beat it's wing in one hour

    asked on October 22, 2016
  90. World history

    1Which of the following would john locke most favor Republic Oligarchy Theocracy Absolute monarchy 2Whay was james i resistant to working with parliament He believed in the absolute power of kings He did not agree with the policies of the prime minister

    asked on August 10, 2016
  91. MATH

    The Eiffel Tower has a surface area of approximately 76,000 square meters. A restoration company charges $80 per sq yard for re-painting. How muuch will it cost to paint the Eiffel Tower

    asked on May 2, 2016
  92. Chemistry

    Three isotopes of Neon occur naturally: 20Ne (mass = 19.9924 amu) 21Ne (mass = 20.9938 amu) 22Ne (mass = 21.9914 amu) If the percent abundance of 21Ne is 0.2600, what is the percent abundance of 20Ne? How do I set up for these type of problems. I tried

    asked on February 12, 2016
  93. Chemistry

    How do you Find the mass (in g) of Carbon in 2.980 g Carbon dioxide? I saw the question asked before but couldn't find a solution.

    asked on February 12, 2016
  94. chemistry

    A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressu of the three gases in the tank are 5 atm of O2, 900 mm Hg of N2, and 1.4 kPa of He what total pressure inside of the tank?

    asked on February 1, 2016

    Find the dimensions of a rectangle with a Perimeter of 100 cm - its width is 2/3 its length.

    asked on January 31, 2016
  96. Chemistry

    How many grams of aluminum sulfate are produced if 15.7 g Al reacts with excess CuSO4?

    asked on January 20, 2016
  97. Math

    Part A: Max rented a motorbike at $465 for 5 days. If he rents the same motorbike for a week, he has to pay a total rent of $625. Write an equation in the standard form to represent the total rent (y) that Max has to pay for renting the motorbike for x

    asked on November 25, 2015
  98. science

    A glass bottle has a volume of 1L and weighs 500g. When half filled with oil, it weighs 1750g. What is the density of the oil in the bottle?

    asked on November 22, 2015
  99. chem

    Consider the unbalanced reaction CO + H2O > CH4 + O2. All reactants in the gas phase. Calculate the H per mole of H2O reacted.

    asked on November 3, 2015
  100. chem

    Fe3O4(s) + C(s) > CO2 + Fe Balance the chemical reaction and calculate how many moles of Fe3O4 must be reacted to produce 440 gr CO2 (the > is an arrow)

    asked on November 2, 2015


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