lee

Most popular questions and responses by lee
  1. algebra

    Could someone check my work; 1. Generate the first five terms in the sequence using the explicit formula. yn = –5n – 5 –30, –25, –20, –15, –10 30, 25, 20, 15, 10 –10, –15, –20, –25, –30(my answer) 10, 15, 20, 25, 30 2. What is the

    asked on February 3, 2013
  2. algebra

    Can someone check my answers on exploring conic sections? 1. Graph x2 + y2 = 9. What are its lines of symmetry? Every line through the center is a line of symmetry. The y-axis and the x-axis are lines of symmetry.( my choice) Every line through the center

    asked on February 19, 2013
  3. chemistry

    Write the equation for the decomposition of water into its elements. Phase symbols are not graded.

    asked on April 17, 2013
  4. physics

    A wave of amplitude .30 m interferes with a second wave of amplitude .20 m. What are the largest and smallest displeacements that can occur? What type of interference is demonstrated by each displacement?

    asked on September 8, 2009
  5. algebra

    what is the simpliest form of the equation 3 sqrt 750 + 3 sqrt 2058 - 3 sqrt 48 possible answers 14 3sqrt6 17.5 3sqrt6 33 3sqrt6 10 3sqrt6

    asked on December 2, 2012
  6. algebra

    Which steps transform the graph of y=x^2 to y=-2(x-2)^2+2. a) translate 2 units to the left translate down 2 units stretch by factor 2 b)translate 2 units to the right translate up 2 units stretch by the factor 2 c)reflect across the x-axis translate 2

    asked on October 29, 2012
  7. algebra

    Can someone check my answers please and if Im wrong please explain. 1) graph 4x^2+4y^2=64. what are the domain and range? domain;all real numbers range;-4

    asked on February 22, 2013
  8. Physics

    A person driving her car at 45km/h approaches an intersection just as the traffic light turns yellow. She knew that the yellow light lasts only 2s before turning red,and shi is 28m away from the near side of the intersection. Should she try to stop,or

    asked on September 17, 2016
  9. chemistry

    If a solution containing 34.576 g of mercury(II) perchlorate is allowed to react completely with a solution containing 10.872 g of sodium sulfate, how many grams of solid precipitate will be formed?

    asked on April 19, 2013
  10. Trigonometry

    The populations, P, of six towns with time t in years are given by: I) P=1000(1.08)^t II) P= 600(1.12)^t III) P = 2500(0.9)^t IV) P=1200(1.185)^t V) P=800(0.78)^t VI) P=2000(0.99)^t a. Which towns are growing in size? Which are shrinking? b. Which town is

    asked on January 15, 2013
  11. algebra

    Generate the first five terms in the sequence using the explicit formula; Cn=12n-11 Please explain

    asked on February 5, 2013
  12. Social Studies

    How were the economies of the Nothern and Southern states different? How were they the same?

    asked on November 3, 2016
  13. I need help, I'm stuck...what is the correct answe

    The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4 The mean score on this test is: 6.5 The median score on this test is: 7.5

    asked on October 24, 2016
  14. algabre

    the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and back to his deck and he needs this trip in a total

    asked on January 24, 2013
  15. Chemistry

    Which of the following gases is the best choice for inflating a balloon that must remain inflated for a long period of time? a) argon b) hydrogen c) neon d) oxygen

    asked on April 13, 2010
  16. economics

    Could someone check my work? Please When the government attempts to cover large deficits by creating more money, what is the probable result called? government borrowing hyperinflation (my choice) excess currency full employment 2. What is one of the major

    asked on November 6, 2012
  17. economics

    can someone explain the relationship between consumer expectations and economic performance? Could use some help.

    asked on October 31, 2012
  18. algebra

    what is the simpler form of the radical expressio. 4 sqrt 2401x^12y^16 I know its 7x^3y^4 but not sure if looks like 7[x^3[y^4 7x^3[y^4

    asked on January 4, 2013
  19. algebra

    I have 3 questions I need help with. 1) what is the 15th term of the sequence 81,27,9,... 2) what is a possible value for the missing term of the geometric sequence 39,_,975,_ 3) what is the sum of the finite arithmetic series (-5)+0+5+10+..+65

    asked on February 12, 2013
  20. algebra

    suppose the polynomial function below represents the power generated by a wind turbine where x represents the wind speed in meters per second and y represents the kilowatts generated interpret f(10) f(x)=0.08x^3+x^2+x+0.26

    asked on November 12, 2012
  21. algebra

    What is the product in simpliest form state any restrictions on the variable x^2+7x+10 / x+3 times x^2-3x-18 / x^2+x+2 I got (x+5)(x-6) / x-1, not sure on restrictions either 1 or -3,-2, and 1

    asked on January 30, 2013
  22. algebra

    what is the quotient in simpliest form state the restrictions on the variable z^2-4/z-3 divided z+2/z^2+z-12 i got z^2+2x-8 but am not sure of the restrictions maybe 3,-2

    asked on January 30, 2013
  23. Bus math

    Bari Jay, a gown manufacturer, received an order for prom dresses from China. Her cost is $40 a gown. If her markup based on selling price is 76%, what is the selling price of each gown?

    asked on October 13, 2017
  24. chemistry

    Baking soda is sodium bicarbonate, NaHCO3, and vinegar is primarily acetic acid, HC2H3O2. When baking soda is added to vinegar, the resulting reaction produces a tremendous amount of gas, as shown in this video. Complete this equation for the reaction of

    asked on April 19, 2013
  25. algebra

    Have a few questions can someone please help me figure them out? 1) You research the cost of a gallon of gasoline over several years to look for a trend. The table shows your data. What is a line of best fit for the data? Based upon these prices, how much

    asked on January 3, 2013
  26. algebra

    Simplify the rational expression state any restrictions on the variable t^2+2t-24 / t^2-36 I got t-4 / t-6, but Im not sure of the restrictions whether its 6 or -6,6

    asked on January 30, 2013
  27. algebra

    For the function f(x)=(7-8x)^2, find f^-1. Determine whether f^-1 is a function.

    asked on December 10, 2012
  28. Physics

    In the series circuit, if the current through R1 is 1.5 A, what is the current through R2? 1. Unable to determine 2. 1.5 A 3. 1 A 4. 0.5 A 5. 3 A

    asked on February 24, 2016
  29. chemistry

    Write the balanced chemical equation for the Habor-Bosch process, that is, the combination of nitrogen and hydrogen to form ammonia, NH3. Phase symbols are optional.

    asked on April 17, 2013
  30. algebra

    A biologist took a count of the number of migrating waterfowl at a particular lake, and recounted the lakes population of waterfowl on each of the next six weeks. Find the function that models the data as a function of x, the number of weekx. Use the model

    asked on October 25, 2012
  31. algebra

    A few more question Id like for someone to check please. 1) what are the vertex, focus, and directrix of the parabola with the given equation? x^2-8x-28y-124=0 vertex (4,-5) focus (0,7) directrix y=-12 2) write an equation of a circle with given center and

    asked on February 22, 2013
  32. statistics

    Consider a binomial experiment with 20 trials and probability 0.45 on a single trial. Use the normal distribution to find the probability of exactly 10 successes. Round your answer to the thousandths place.

    asked on August 2, 2011
  33. algebra

    please explain the step for this I have no idea. the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and

    asked on January 29, 2013
  34. algebra

    identify the graph of 4+2i if someone could explain to me how you decide which way to go on the graph as far as imaginary and real axis

    asked on November 3, 2012
  35. Language Arts

    "Everyone is just walking along concerned with his own problems, his own life, his own worries. And we're just expecting other people to tune in to our agenda." Think about how this theme is developed through the character's words and actions in the novel.

    asked on May 31, 2017
  36. algebra

    a hyperbola has vertices (+-5,0) and one focus (6,0) what is the standard form equation of the hyperbola.

    asked on February 25, 2013
  37. chemistry

    A gas has a volume of 590mL at a temperature of -55.0C What volume will the gas occupy at 30.0C Can someone help me?

    asked on January 31, 2013
  38. algebra

    Really need help with one problem. The table shows the annual consumption of cheese per person in the United States for selected years in the 19th century. What cubic model best fits this data? Year Pounds Consumption 1915 4.156 1922 4.857 1946 7.16 1991

    asked on November 28, 2012
  39. algebra

    A parabolic microphone has a cross-section in the shape of a parabola. The microphone is placed at the focus of the parabola. If the parabola is 20 inches wide and 5 inches deep, how far from the vertex should the microphone be placed? Can someone please

    asked on March 1, 2013
  40. english

    Has anyone read Kate Chopin is so could you check my answers? 1. When Mrs. Sommers leaves to go shopping, she forgets to take money. her daughter Mag’s size. her preferred store. to eat lunch.***** 2. The resolution of a story should build to the climax

    asked on November 18, 2012
  41. Algebra

    Can someone please help me with a couple questions? 1)The probability that a dessert sold at a certain cafe contains chocolate is 73%. The probability that a dessert containing chocolate also contains nuts is 25%. Find the probability that a dessert at

    asked on March 24, 2013
  42. basic word & excel

    6. _______ data updates in your destination document if there are changes to the source data. A. Linked B. Integrated C. Embedded D. Field

    asked on December 12, 2017
  43. algebra

    Coulld someone take the time and check my answers please. 11) without graphing is the system independent, dependent, or inconsistent? y=-x+5 -3x-3y=-15 (my answer; dependent) 12) your club is baking vanilla and chocolate cakes for a bake sale. they need at

    asked on January 3, 2013
  44. Chemistry

    Enough of a monoprotic acid is dissolved in water to produce a 0.0169 M solution. The pH of the resulting solution is 2.68. Calculate the Ka for the acid.

    asked on April 21, 2012
  45. algebra

    what is the equation in standard form of a parabola that contain the following points? (-2,-20),(0,-4),(4,-20) Please Help

    asked on October 29, 2012
  46. algebra

    You live near a bridge that goes over a river. The underside of the bridge is an arch that can be modeled with the function y=-0.000475x^2+0.851x, where x and y are in feet. How high above the river is the bridge(the top of the arch)? How long is the

    asked on October 20, 2012
  47. Basic Word and Excel

    What would be a situation in which you could use an Excel chart to present your data? a.)determining what percentage of customer 101 buys product A, and what percentage of the same customer buys product B b)Compiling survey questions and answers from both

    asked on December 5, 2017
  48. chemistry

    Balance the following redox reaction by inserting the appropriate coefficients. H^+ +CrO4^2- +NO 2^- =Cr^3+ +H2O+NO3^-

    asked on April 19, 2013
  49. algebra

    Wind farms are a source of renewable energy found around the world. The power P(in kilowatts) generated by a wind turbine varies directly as the cube of the wind speed v(in meters per second) If a turbine generates 700kW in a 5m.s wind, how much power does

    asked on January 4, 2013
  50. history

    Question: 8) What impact did the Columbian Exchange have on imperialism? A) The popularity of Columbian goo... 8) What impact did the Columbian Exchange have on imperialism? A) The popularity of Columbian goods throughout Europe built American empires. B)

    asked on July 27, 2018
  51. algebra

    Write a recursive formula for the sequence formula 15,26,48,92,180,.. then find the next term. can someone please help me

    asked on February 5, 2013
  52. history

    What led to the development of one-crop economies? A. Joint-stock companies found profitability in monopolizing one cash crop. B. One-crop economies were developed through slash-and-burn agricultural practices. C. Colonies sought to reduce costs by

    asked on July 27, 2018
  53. chemistry

    N2 (g) + 3H2 (g) → 2NH3(g) ΔH = -92.2 kJ How much heat (in kJ) is released if 13.3 g of hydrogen is consumed to make ammonia? (Give your answer as a positive number, since you cannot release negative energy.)

    asked on October 14, 2017
  54. algebra

    Robin bought a computer for $1,250. It will depreciate, or decrease in value, by 10% each year that she owns it. a) Is the sequence formed by the value at the beginning of each year arithmetic, geometric, or neither? Explain. b) Write an explicit formula

    asked on February 12, 2013
  55. algebra

    Rewrit the equation in vertex form. Name the vertex and y-intercept. y=3/5^2+30x+382 I need some help do not understand these type of problems.

    asked on October 31, 2012
  56. algebra

    find an equation that models the path of a satelite if its path is a hyperbola, a=55,000km and c=81,000km assume that the center of the hyperbola is the origin and the tranverse axis is horizontal

    asked on February 25, 2013
  57. algebra

    What is the expression in factored form? 2x^2+16x+24

    asked on November 6, 2012
  58. algebra

    please explain the step for this I have no idea. the speed of the current in a river is 6 mph a ferry operator who works that part of the river is looking to buy a new boat for his business everyday his route takes him 22.5 miles against the current and

    asked on January 29, 2013
  59. books

    Reread the nightmare scene near the end of The Night Thoreau Spent in Jail and describe the main characters and primary events in Henry’s nightmare. Also, discuss this scene in particular, and the play in general, as a work of protest against war itself.

    asked on November 12, 2012
  60. algebra

    Can someone please help... a hyperbola has vertices (+-5,0) and one focus (6,0) what is the standard form equation of the hyperbola.

    asked on February 27, 2013
  61. algebra

    What are the zeros of the function? what are their multiplicities f(x)=4x^3-20x^2+24x numbers -3,-2,and 0 are multiplicity of 1 numbers 3,2,and 0 are multiplicity of 1

    asked on November 18, 2012
  62. english

    How would you briefly describe Poe's requirement for the short story genre?

    asked on October 9, 2012
  63. algebra

    A conic section has the equation x^2+y^2+12x+8y=48. Determine the following; type of conic, domain and range, axes of symmetry, and center.

    asked on March 1, 2013
  64. algebra

    What is the vertex form of the equation? y=-x^2+12x-4

    asked on November 6, 2012
  65. chemistry

    Write the net ionic equation (including phases) that corresponds to Fe(ClO4)2(aq)+Na2S(aq)=FeS(s)+2NaClO4(aq)

    asked on April 19, 2013
  66. Math

    A carton contains 1 8/9 liters of apple juice. Rosalia drinks 1/6 liter of the juice every day. How much apple juice is left in the carton after a week?

    asked on December 9, 2014
  67. Geometry

    A red cross helicopter takes off and flies 75km at 20degree south of west. There it's drops off some relief supplies. It then flies 125 km at 10 degree west of north to pick up three medics. A. Make an accurate drawing of the two vectors decribed? B. draw

    asked on March 10, 2015
  68. algebra

    Can someone help with inverse relations and functions? is relation t a function? Is the inverse t a function? chart looks like: x 0 2 4 6 y -10 -1 4 8 If someone could please explain this problem

    asked on December 10, 2012
  69. Physics

    A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (3.0 – 2.0 ˆi ˆj ) m/s2. At the instant the particle moves back across the x axis (y = 0), what is the value

    asked on September 29, 2008
  70. agebra

    Can someone please help me.. find an equation that models the path of a satelite if its path is a hyperbola, a=55,000km and c=81,000km assume that the center of the hyperbola is the origin and the tranverse axis is horizontal

    asked on February 27, 2013
  71. Math

    A community center has 3 tennis teams and 5 basketball teams. No one is on both teams. How many athletes are there? Tennis---2 players Basketball---5 players Softball---10 players

    asked on February 11, 2013
  72. algebra

    how can you write the expression with rationalized denominator? 2+3sqrt3/3sqrt6

    asked on January 4, 2013
  73. Math

    25% of my candies are chocolate candiea i had 25 chocolate candies. How many candies did i have altogether?

    asked on November 17, 2015
  74. math

    calculate the resistances of (a) 100-watt 120-volt incandescent lamp, (b) a 750-watt 115-volt toaster, (c) a 1300 watt 110-volt portable iron.

    asked on August 24, 2014
  75. algebra

    Can anyone help explain how to work this problem out? One factor in flood safety along a levee is the area that will absorb water should the levee break. the coordinates that make up the boundry area are (0,0),(2.8,2.1)and(4.3,4.4) what is the area of the

    asked on April 2, 2013
  76. algebra

    What is a quartic function with only the two real zeroes given? x=-1 and x=-3 Would someone please explain

    asked on November 26, 2012
  77. Organic Chemistry

    Consider the crystallization of sulfanilamide from 95% ethyl alcohol. If impure sulfanilamide is dissolved in the minimum amount of 95% ethyl alcohol at 40°C rather than 78°C (the boiling point of ethyl alcohol), how would this affect the percent

    asked on September 8, 2015
  78. Math and exopents

    Given w = 10. w + w (12 - 2*2 * 3) * 7? Can some one help? the answers are: 73 12 6 3 but none of my calculations are 73, 12, 6 or 3 :(

    asked on September 6, 2015
  79. Poetry

    What is rhyme scheme? (1 point_ The stressed and unstressed syllables within a poem a type of poetry that has no rhyme, but no rhythm (or patter of lines that rhyme within a poem) a poem that has a rhyming meter a poem consisting of ten syllables I think

    asked on September 24, 2015
  80. algebra 2

    you are making gift baskets.each basket will contain three different kinds of candles: tapers,pillars, and jar candles. Tapers cost $1 each, pillars cost $4 each, and jar candles cost $6 each. You put 8 candles costing a total of $24 in each basket, and

    asked on October 14, 2009
  81. algebra

    Skip designs tracks for amusement parks. For a new design the track will be ellipitical if the ellipse is placed on a large coordinate grid with its center at (0,0) the equation x^2/2500+y^2/8100=1 model the path of the park.The units are given in yards,

    asked on March 1, 2013
  82. algebra

    Archers need to use arrows that do not bend easily. The table shows how the weight of an arrow affects its spine or the distance the center of the arrow bends when a certain constant weight is attached. Graph the data in the table to find a linear and

    asked on January 8, 2013
  83. algebra

    Suppose a parabola has a vertex (-4,7) and also passes through the point (-3,8) Write the equation of the parabola in vertex form. f(x)=a(x-h)^2+k I believe h=-4 k=7 Not sure what to do from here.

    asked on October 29, 2012
  84. Calc

    A sample of a radioactive substance decayed to 93.5% of its original amount after a year. a) What is the half-life of the substance? ? years (b) How long would it take the sample to decay to 10% of its original amount? ? years

    asked on November 8, 2009
  85. Cal 1

    The top and bottom margins of a poster are each 12 cm and the side margins are each 8 cm. If the area of printed material on the poster is fixed at 1536 cm^2, find the dimensions of the poster with the smallest area.

    asked on December 8, 2010
  86. math

    Assignment 1 Chapter 11. Data Analytics (p. 332) 38. Refer to the Baseball 2016 data, which report information on the 30 Major League Baseball teams for the 2016 season. A. At the .05 significance level, can we conclude that there is a difference in the

    asked on May 26, 2019
  87. physics

    If an atom has an electron in the n = 5 state with ml = 3, what are the possible values of l?

    asked on November 24, 2014
  88. algebra

    what is a quartic function with only the two real zeros given x=5 and x=1 y=-x^4-6x^3+6x^2-6x+5 y=x^4+6x^3-6x^2-5 y=x^4-6x^3+5x^2-6x+6 y=x^4-6x^3+6x^2-6x+5 can someone explain

    asked on November 14, 2012
  89. algebra

    The table shows the amount of milk that wisconsin dairy farms produced from 1939 to 1962 which linear model best fits this data? year milk produced(in billions of lbs 1939 12 1962 15 2005 21

    asked on January 4, 2013
  90. basic word and excel

    _______ data would be useful for creating a weekly status report for your manager that should reflect changes in real time. A. Field B. Integrated C. Linked D. Embedded

    asked on December 13, 2017
  91. Chemistry

    The Ksp values of BaSO4 and SrSO4 are 1.1x10^-10 and 3.8x10^-7 respectively. Calculate the concentrations of Ba2+, Sr2+, and SO4 2- in a solution that is saturated with BaSO4 and SrSO4.

    asked on November 18, 2014
  92. physics

    A child has a temperature of 101◦F. If her total skin area is 13 m2, find the en- ergy loss per second due to radiation, assum- ing the emissivity is 1. The Stefan-Boltzmann

    asked on October 21, 2012
  93. algebra

    Identify the maximum or minimum value and the domain and range of the graph of the function y=2(x-3)^2-4 Can someone please help me.

    asked on October 17, 2012
  94. calculus

    the curve with equation 2(x^2+y^2)^2=9(x^2-y^2) is called a lemniscate. find the points on the lemniscate where the tangent is horizontal.

    asked on October 30, 2011
  95. Geology

    Which of the following is consistent with the plate tectonic theory? Which of the following is consistent with the plate tectonic theory? A. Lithosphere convection drives mantle movement. B. As a plate sinks into the asthenosphere, it pulls the trailing

    asked on October 16, 2016
  96. algebra

    You throw a rock off the balcony overlooking your backyard the table shows the height of the rock at different times use quadratic regressin to find a quadratic model for this data. time 0 1 2 3 4 5 height 24 44.2 54.8 55.8 47.2 29 would someone explain

    asked on October 29, 2012
  97. algebra

    a polynomial equation with rational coefficients has the roots 7+sgrt3, 2-sgrt6 find two additional roots 7-sgrt3, 2+sgrt6 3-sgrt7, 6+sgrt2 7+sgrt3, 2-sgrt6 3+sgrt7, 6=sgrt2 could someone help

    asked on November 14, 2012
  98. Physics

    Police find skid marks 180 meters long on a highway where a car made an emergency stop. Assuming that the deceleration was a = 10 m/s¶ (about the maximum for dry pavement), how fast was the car traveling before the brakes were applied?

    asked on November 14, 2013
  99. College algebra

    A person is driving a car on a straight road. The graph shows the distance in y miles that the individual is from home after x hours. the graph has the following points (1, 40) and (3, 90) Find the slope intercept of the line y = ____x + ______ How fast is

    asked on December 6, 2010
  100. Unknow

    A man has a rectangular garden. One length of the garden lies along a patio wall. However the rest of the garden is enclosed by 32 feet of fencing. If the length of the garden is twice its width, what is the area of the garden.

    asked on March 27, 2013

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