Popular questions and responses by Lily
  1. Math

    The population of a southern city follows the exponential law. If the population doubled in size over 13 months and the current population is 30,000 what will the population be in 5 years from now?

    asked on November 23, 2012
  2. Math

    if two fair dice are rolled what is the probability that the total showing is more than four? Will you please explain how to do this problem? Thank you

    asked on January 22, 2017
  3. History

    What masterpieces were painted by Leonardo da Vinci? Select all that apply. Birth of Venus Mona Lisa Last Supper Starry Night i think it 2 and 3.

    asked on November 12, 2019
  4. History

    Which identifies the political party that believed in strong German nationalism and whose aim was the remilitarization of Germany? National Republican Front National German Front** National Socialist Party National Patriotic Party B?

    asked on March 25, 2020
  5. Advanced Functions

    the ferris wheel at an amusement park measures 16m in diameter. the wheel does 3 rotations every minute. the bottom of the wheel is 1m above the ground... a) determine the simplest equation that models Megan's height above that ground(h) over time (t).

    asked on March 11, 2017

    Two planes fly from toronto to philadelphia. Plane a flies via pittsburgh whereas passenger on plane B have a direct flight. Pittsburgh is 350km due south of Toronto and 390km due west of Philadelphia. The airspeed of both planes is 400km/h and a steady

    asked on February 27, 2008
  7. World History

    How did alliances between nations serve to escalate World War I? Nations that were on good terms with a nation at war were automatically considered enemies. Nations that shared a common culture were expected to fight on behalf of their neighbors. Nations

    asked on February 25, 2020
  8. History

    Read the sentence.A charter is a(n) ­­­­­_[blank]_. Which most accurately completes the sentence? book of accounting exploration company written grant business journal***

    asked on November 18, 2019
  9. Math Check

    I need someone to please check this for me. Thanks! :) Question: Tonto Pagalies (brother to vaporized racer Teento), an observer at Bindy Bend, is 14285’ from Desert Plain. He knows that there is a right angle between the lines of sight from Bindy Bend

    asked on February 13, 2015
  10. Probability Math

    A committee of four students will be selected from a list that contains six Grade 9 students and eight Grade 10 students. What is the expected number of Grade 10 students on the committee?

    asked on May 7, 2013
  11. Chemistry

    calculate the wavelength of the second line in the Brackett series (nf=4) of the hydrogen emission spectrum. Rh= 2.180e-18 any help please? i know its energy levels 4 to 6... but that is all.

    asked on September 24, 2007
  12. History

    What was World War I’s effect on art in Western societies? Traditional styles were challenged by new abstract and dark themes.** Artistic expression declined because more people saw it as impractical. Artists envisioned a brighter future in which human

    asked on March 23, 2020
  13. math

    In △DEF, DF=16 and m∠F=45. Find the length of a leg. Leave your answer in simplest form.?

    asked on May 30, 2017
  14. math

    What is 29672 rounded to the nearest 500

    asked on April 30, 2016
  15. Chemistry

    A 1.44-g sample of an unknown pure gas occupies a volume of 0.336 L at a pressure of 1.00 atm and a temperature of 100.0 degrees Celsius. What is the unknown gas?

    asked on March 4, 2013
  16. Physics

    A football quarterback shows off his skill by throwing a pass 45.90 m downfield and into a bucket. The quarterback consistently launches the ball at 40.00 ∘ above horizontal, and the bucket is placed at the same level from which the ball is thrown. What

    asked on October 22, 2016
  17. The Watson go to Birmingham 1963?

    1. Which of the following passages from the novel best describes the setting? A. It was one of those super duper cold Saturday. B. One of those days that when you breathed kind of hung frozen in the air like a hunk of smoke and you could walk along and

    asked on January 17, 2016
  18. kempston

    i spent 1/4 of my money in one shop and 1/3 of my money in another shop. what fraction was left?

    asked on July 21, 2015
  19. Physics

    A stone is thrown at an angle of 30 degrees above the horizontal from the top of a cliff with an initial speed of 12 m/s. If it hits the ground 4.6 seconds later, what is the height of the cliff?

    asked on November 3, 2012

    You deposit $2,000 in an account that pays 8% interest compounded semiannually. After 4 years, the interest rate is increased to 8.28% compounded quarterly. What will be the value of the account after 4 more years? (Do not round until the final answer.

    asked on December 7, 2011
  21. Elementary Math

    What if we made a pattern by joining pentagons? If the length of each side of the pentagon is 1 unit, then what would be the perimeter of n pentagons joined together? Note: The perimeter is the distance around the outside of the figure.

    asked on January 27, 2011
  22. Math

    One-quarter of a bread recipe calls for 2/3 cup of bread flour. How many cups are needed per recipe?

    asked on November 22, 2015
  23. chemistry

    Why are half-reactions written to describe redox reactions?

    asked on June 9, 2020
  24. Chemistry

    describe how you would make a 2.5L of a .100M KCL solution from a 5.5M stock solution

    asked on December 5, 2010
  25. Chemistry

    Write skeleton equations for these reactions. a. hydrogen iodide(g) --> hydrogen(g) + iodine(g) b. aluminum(s)+iodine(s)--> aluminum iodide(s) c. iron(II) oxide(s) + oxygen(g) --> iron(III) oxide(s)

    asked on November 16, 2010
  26. Chemistry

    Approximately how many grams of NaNo3 will dissolve in 100g of water at 20 degrees Celsius?

    asked on January 28, 2010
  27. elementary algebra

    ron and kathy are ticket-sellers at their class play, ron handling student tickets that sell for $3.00 each and kathy selling adult tickets for $6.50 each. If their total income for 29 tickets was $125.50, how many did ron sell?

    asked on December 14, 2008
  28. Math

    You roll two fair dice. Let E be the event that an even total shows on the dice. Let F be the event that a six shows on at least one of the dice. Find P(F) and P(F|E). Choices: P(F)=1/3; P(F|E)=1/13 P(F)=1/3; P(F|E)=5/18 P(F)=11/36; P(F|E)=7/18 P(F)=11/36;

    asked on April 18, 2017
  29. physics

    A proton moves parallel to an electric field between points A and B. The change in the proton's electric potential energy is EPEB – EPEA. If the proton is removed from point B and replaced with an electron, how does the change in electric potential

    asked on July 28, 2014
  30. chem

    compute theoretical yield (g) ~2Al+3Cl2->2AlCl3 ~2g Al, 2g Cl2 [ans:2.5g AlCl3] i need the calculation work bcus i got diff from the ans which is 7.12 g.

    asked on July 20, 2011
  31. physics

    Two forces whose resultant is 100newton are perpendicular to each other if one of them makes an angle of 60° with the resultant. calculate its magnitude

    asked on October 21, 2017
  32. 7th grade Math

    Which of the following is a true statement? A. -8 > -6 B. 10 < -12 C. -5 > -7 D. -9 >6 This is integers, and I'm stumped. Please help! Thanks.

    asked on September 7, 2016
  33. Math

    Jenny bought scrapbook supplies for $70.75. She paid $5.66 in sales tax. What was the sales tax rate on the supplies? If necessary, round your answer to the nearest tenth.

    asked on April 5, 2016
  34. Physics

    A negatively charged balloon has 4 μC of charge. How many excess electrons are on this bal- loon? The elemental charge is 1.6 × 10−19 C. Answer in units of electrons.

    asked on January 14, 2016
  35. Math

    Maddy’s loaf tin has three partitioned areas in which to bake three loaves. The outside of the tin along with the partitions is made of 80 inches of material. The area of the entire loaf tin is 192 in2. What are the possible outer dimensions of the loaf

    asked on December 16, 2015
  36. CHEM redox equations help!

    MnO4 ^- + C2O2 ^2- = MnO2 + CO3 ^2- how would you balance this in basic solution? I keep getting the wrong answer.

    asked on October 22, 2015
  37. Pre calc

    8sinxcosx=1 I don't know where to go after 2sinxcosx=1/4

    asked on February 5, 2014
  38. math

    The path of a cannonball is a parabola modeled by the equation y= 55 + x - 0.002x^2, where x and y are both measured in feet. In this model, the cannonball starts at the point (0,55) and travels to the right. The ground is represented by the x-axis.

    asked on October 30, 2013
  39. Chemistry

    A 1.44-g sample of an unknown pure gas occupies a volume of 0.336 L at a pressure of 1.00 atm and a temperature of 100.0 degrees Celsius. What is the unknown gas?

    asked on March 4, 2013
  40. accounting

    What is the value of the following future amount? a)RM800 to be received 10 years from now discounted back to present at 10%.

    asked on January 27, 2013
  41. Geometry

    Name the property of inequality that justifies the following statement: If BC+DE

    asked on November 12, 2011
  42. geometry

    the lengths of the diagonal of a rhombus are 2 in and 5 in. find the measure of the angles of the rhombus to the nearest degree. if it helps, we are learning how to use tangent right now!

    asked on February 14, 2011
  43. pyschology 1

    How would you use classical conditioning, operant conditioning, and observational learning to improve your academic performance? Give one example for each type of learning.

    asked on April 18, 2010
  44. Social Studies

    what is the connection among sectionalism, slavery, and states rights as causes of the Civil War? How did the southern response to the 1860 election results demonstrate this connection? Could someone help me with this and explain it?

    asked on November 29, 2016
  45. Reading and language

    Choose by Carl Sandburg The single clenched fist lifted and ready,Or the open asking hand held out and waiting.Choose:For we meet by one or the other. What is literally happening in the poem? A.a person is deciding whether to to be open to other humans

    asked on August 30, 2016
  46. Chemistry

    Electron configuration for phosphorus is 1s2 2s2 2p6 3s2 3p3. So the number of electron must be 15 , right ? But , what if m = 1 ? Does it effect the number of electron ?

    asked on June 23, 2015
  47. Geometry

    1. If triangles EIO = UAN, EI = 3x-4, IO = 2x+5, UA = 2x+3 and UN = 3x+1, solve for the value of x, find the perimeter of triangle UAN and identify the smallest angle in triangle EIO. 2. If triangle FAT is equal to triangle GRC, FA = 24cm and the ratio of

    asked on March 4, 2015
  48. computer and technology

    It is important to verify internet source because. ----- choose that apply. A.the source should be written by real author. B.anyone can create a website and write false or inaccurate information on it need to make sure it is owened by a government

    asked on January 8, 2015
  49. equation and inequalities

    Graph the solution of the equation b-15=-12

    asked on December 30, 2014
  50. Trigonometry

    A volleyball player spikes the ball from a height of 2.44 meters. Assume that the path of the ball is a straight line. To the nearest degree, what is the maximum angle, θ, at which the ball can be hit and land within the court?

    asked on September 30, 2014
  51. Physics

    The tightrope walker gets tired and decides to stop for a rest. During this rest period, she is in translational equilibrium. She stops at middle of the rope and finds that both sides of the rope make an angle of è = 10.00° with the horizontal. If the

    asked on October 19, 2012
  52. Chem, HELP plz

    Complete and balance the following reaction, given that elemental rubidium reacts with elemental sulfur to form Rb2S?

    asked on May 29, 2012
  53. Geography

    What are factors leading to growth in lagos: Geographical Economic Political

    asked on March 1, 2012
  54. ap chem

    calculate the enthalpy of formationof solid MgOH2, given the following data: 2Mg(s) + O2(g)-> 2MgO(s) heat:-1203.6 Mg OH2(s) -> MgO(s) +H2O(l) heat: 37.1 2H2(g)+ O2(g) -> 2H2O(l) heat: -571.7 what equation would they want the three equations to develop

    asked on October 4, 2007
  55. math

    Combine the like terms to create an equivalent expression. 6t+7-2+t

    asked on December 10, 2019
  56. Social studies

    which roles were brothers and sons expected play in Africa's matrilineal culture? A. Sons helped their mothers brothers as needed. B. Sisters is protected their brothers. C. Son’s health their mothers sisters as needed. D. Brother is protected their

    asked on September 28, 2018
  57. science

    2. Compare and contrast deductive reasoning and inductive reasoning. Based on the information given here, answer the following questions about the experiment: • What are the qualities of deductive reasoning? • What are the qualities of inductive

    asked on May 4, 2017
  58. Chemistry

    Hydrogen gas is used for many purposes, including the hydrogenation of vegetable oils to make margarine. The most common industrial process for producing hydrogen is "steam reforming", in which methane gas, CH4, from natural gas reacts with water vapor to

    asked on November 16, 2016
  59. Chemistry

    Write the formation equation for the ester that forms between propanoic acid and 1-pentanol. Include the names of the products and the structures for all substances involved.

    asked on May 29, 2016
  60. algebra

    A mother is 21 years old then her new born daughter. how old does her daughter when her age will be 1 by 4 of her mother

    asked on May 22, 2016
  61. Math

    Jenny bought scrapbook supplies for $70.75. She paid $5.66 in sales tax. What was the sales tax rate on the supplies? If necessary, round your answer to the nearest tenth.

    asked on April 2, 2016
  62. psychology

    Because you are bored one afternoon, you decide to try a little experiment. You open your eye very wide, extend your thumb, and then poke yourself in the e ure. Aside from being very foolish and in alot of pain, you may learn something about your eye when

    asked on March 14, 2016
  63. language art

    In all together now Jordan states that there were marches and protest against segregation and discrimination in the 1960s. What make this statement a fact? was stated In persuasive essay b. It is an emotional statement. can be proven in an

    asked on January 9, 2015
  64. Precalc

    Two lookout towers are situated on mountain tops A and B, 4 mi from each other. A helicopter firefighting team is located in a valley at point C, 3 mi from A and 2 mi from B. Using the line between A and B as a reference, a lookout spots a fire at an angle

    asked on November 21, 2014
  65. geometry

    Eddie is arguing with tana about the probability of flipping three coins. They decided to flip a penny, nickel, and a dime. Which would be better determining the sample space, a tree diagram or an area model? Justify your answer.

    asked on November 8, 2014
  66. AP Giannini

    Dexter makes a scale drawing of his room. In real life, the room is 10' wide and 12'6" long. In Dexter's drawing, the room is 4"wide, what measure should the length be? explain how you figure this out.

    asked on October 15, 2014
  67. Accelerated Algebra

    it takes 80 feet of fencing to enclose your garden. According to your calculations,you will need 350 square feet to plant everything you want. Is your garden big enough? Explain your answer. They gave a rectangle length=40-x and width= x I asked my mom and

    asked on August 10, 2014
  68. Chemistry

    The equilibrium constant Kc^i is 3.2x10^-34 at 25 degrees C for 2HCl(g) -> H2(g) + Cl2 (g). The equilibrium constant Kc^ii is .10 at 25 degrees C for 2ICl (g) -> Cl2 (g) + I2 (g). a) Calculate the equilibrium constant Kc for the reaction below at 25 C

    asked on March 13, 2014
  69. physics

    When a 58 gram tennis ball is served, it accelerates from rest to a speed of 45 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 44 cm. What is the magnitude of the net force acting on the ball?

    asked on October 16, 2013
  70. chemistry- can you check my answers?

    can you please check my answers?? 9. For the following reaction delta H=2816 kj. 6 CO2(g) + 6 H2O(l) -> C6H12O6(s) + 6O2(g) how is the equilibrium yeild of C6H12O6(s)affected by each of the following? a) increasing pressure of CO2 increase decrease no

    asked on April 20, 2011
  71. algebra 1

    Which statistical method best represents this set of data? 1,2,5,2,3,7,300,5,3,3 a.mean b.median c.mode d.standard deviation I'm pretty sure it's B or C, but they are both the same number.

    asked on September 21, 2010
  72. MATH

    1. A father is three times as old as his son. Five years ago the sum of their ages was 30. How old is the father now? Choices; 30, 35, 40, 45, 50 2. A mother is four times as old as her daughter. In two years, the sum of their ages will be 44. How old is

    asked on July 7, 2008
  73. psychology

    what are four subfields of psych?

    asked on September 5, 2007
  74. Chemistry

    Al(s) + H₂SO₄(aq) → Al₂(SO₄)₃(aq) + H₂ (g) Which of the following are the PRODUCTS in the NET ionic equation? Is the answer Al³⁺, H₂, H₃O⁺ ? or is it Al³⁺, H₂, H₂0

    asked on April 24, 2020
  75. math

    a circular tablecloth has a radius of 2.5 feet. kyle is sewing a piece of ribbon around the edge of the tablecloth. if kyle has exactly enough ribbon, which measurement is closest to the length of the piece of ribbon in feet? a. 19.63 ft b. 15.7 ft c. 7.85

    asked on March 28, 2019
  76. Math - Trig

    This is the question: Two spruce trees are 100m apart. From the point on the ground halfway between the trees the angles of elevation are 21 degrees and 39 degrees. Determine the distance, to the nearest metre, between the tops of the two trees. Show your

    asked on February 12, 2019
  77. Science

    Why do oceanic plates dive underneath continental plates when they collide?

    asked on December 13, 2018
  78. Social Studies

    Why did the House of Representatives impeach President Johnson? a- He had not been elected by the voters. b-He had fired the Secretary of War illegally. c-He had appointed temporary southern governors. d-He had required states to approve the Thirteenth

    asked on December 7, 2018
  79. civics

    why do legislative districts vary so muc in size?

    asked on October 5, 2017
  80. Chemistry

    The reaction of nitrogen dioxide with fluorine generates nitryl fluoride: 2NO2(g) + F2(g) --> 2NO2F(g) To determine the rate law for this reaction, a chemist performed several initial-rate experiments using different initial concentration, with the details

    asked on February 9, 2017
  81. Social studies

    which of the following were effects of pizarro and cortes defeat of native americans Settlement and colonization of Florida under Spanish rule Inspiration for other Europeans to being explanations and settlement •• Settlement and colonization in the

    asked on September 9, 2016
  82. chemistry

    Imagine that you have a 5.50 L gas tank and a 3.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 155 atm , to what

    asked on February 26, 2016
  83. Math

    Tiffany is constructing a fence around a rectangular tennis court. She must use 300 feet of fencing. The fence must enclose all four sides of the court. Regulation states that the length of the fence enclosure must be at least 80 feet and the width must be

    asked on July 2, 2015
  84. Calculus

    A balloon is rising at a constant speed of 5 ft/sec. A boy is cycling along a straight road at a constant speed of 15 ft/sec. When he passes under the balloon, it is 5 feet above him. Determine how fast the distance between the boy and the balloon is

    asked on January 14, 2015
  85. exponents ,factor,fraction

    The glee club has a set of 48 classical CD and a set of 42 show tune CD. Each set can be divided equally among the club member.what is the greatest possible number of club member. A.12. B.3. C.6. D.336

    asked on January 5, 2015
  86. chemistry

    A voltaic cell is constructed with all the reactants and products in their standard states. Will this condition hold as the cell operates? Explain.

    asked on December 3, 2014
  87. English

    What's the relative clause in this sentence His questions revealed an intelligence that was beyond his young years

    asked on August 19, 2014
  88. Algebra 2

    State the possible number of imaginary zeros of f(x)= 2x^3 - 4x^2 + 8x - 3. 0,1,3?

    asked on May 18, 2013
  89. college math

    A lawn mower handle makes an angle of 60° with the ground. A woman pushes on the handle with a force of 30 pounds. How much work is done in moving the lawn mower a distance of 75 feet on level ground?

    asked on November 17, 2012
  90. Physics 111 PLEASE HELP ASAP

    A 37.5-kg child swings in a swing supported by two chains, each 3.05 m long. The tension in each chain at the lowest point is 433 N. the force of the seat on the child is 498.5 N. b)Find the force exerted by the seat on the child at the lowest point.

    asked on March 12, 2012
  91. Alg. II

    Simplify. Identify any x-values for which the expression is undefined. 1. (4x-8)/(x^2-2x) 2. (8x-4)/(2x^2+9x-5)

    asked on November 17, 2011
  92. biology

    The mouth, small intestine, and kidneys have functions that involve the a. digestion of food, synthesis of vitamins, and filtering of the blood. b. intake, digestion, absorption, and elimination of food and its wastes. c. secretion of bile, digestion of

    asked on November 30, 2010
  93. chemistry

    It's January in Nashville and your local weather station just informed you that the temperature outside is -8.9 degrees Celcius. You estimate the amount of ice on your driveway to be approximately 30kg. What is the minimum amount of sodium chloride in

    asked on September 11, 2008
  94. Algebra 2

    Factor completely 4ab + 2a + 6b + 3 (2a + 3) (2b + 1)?

    asked on January 23, 2013
  95. Physics

    How much copper would be plated by a current of 1.5 A in a time of 1.0 h?

    asked on April 25, 2020
  96. math

    To make a gallon of a paint color, Lou mixes 1/6 gallon of yellow paint with 2/3 gallon of blue paint. Lou fills the rest of the can with white paint to make one gallon of paint. Enter the amount of white paint will Lou need to add to make a full gallon of

    asked on March 31, 2020
  97. History

    Please help within the hour thanks. Which factors kept invaders out of Arabia? A.Hot temperatures and deserts B.Cold temperatures and mountains C.Lack of water and cold temperatures D.Lack of water and mountains

    asked on January 18, 2019
  98. Organic Chem

    A student prepares ethyl benzoate by the reaction of benzoic acid with ethanol using a sulfuric acid catalyst. The following compounds are found in the crude reaction mixture: ethyl benzoate (major component), benzoic acid, ethanol, and sulfuric acid.

    asked on November 5, 2018
  99. Math

    A 6 ft tall person walks away from a 10 ft lamppost at a constant rate of 5 ft/s. What is the rate (in ft/s) that the tip of the shadow moves away from the pole when the person is 10 ft away from the pole? I have drawn out the picture, but I am not sure

    asked on April 14, 2018
  100. math

    It took Esteban 1 minute and 20 seconds to travel one mile. If he then drives this one mile distance in 55 seconds, how much faster is he driving in miles per hour?

    asked on August 1, 2017


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