natalia

Popular questions and responses by natalia
  1. Algebra 1

    A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Is this an example of a: random sample, systematic sample, self-selected sample, convenience sample, bipartisan sample, or

    asked on January 13, 2017
  2. Chemistry

    How many moles of a gas at 100 degrees celciuos does it take to fill a 1.00 flask to a pressure of 1.50 atm?

    asked on November 19, 2010
  3. agricultural science

    breeds of broilers in Guyana and breeds of layers in Guyana.

    asked on February 11, 2010
  4. English

    what is the adjective in sentence "Sam sees a yellow bus"

    asked on September 27, 2011
  5. Science

    Calculate the expansion work done when 50g of water is electrolysis under constant pressure

    asked on February 3, 2016
  6. calculus

    Does any tangent to the curve y=ãx cross the x-axis at x= -1? If so, find an equation for the line and the point of tangency. If not, why not?

    asked on March 1, 2010
  7. geography

    the wide looping curves which are found along parts of the courses of some rivers are called: a.meanders b.flood plains c.river bluffs d.ox-bow lakes

    asked on February 22, 2010
  8. physics

    what are nonrenewable energy sources?

    asked on February 11, 2010
  9. Biology

    I am doing an essay about the nuclear envelope. However, I can't find very good information about the function of this organelle. For example, how does the nuclear envelope protect the nucleus?

    asked on March 17, 2008
  10. math

    The hieght of a model rocket is 4% of the height of the actual rocket.The model is 1.8 meters high. How high is the actual rocket?

    asked on October 9, 2015
  11. Chemistry

    what is the percent by mass of nitrogen in (NH4)2CO3? how do you do this ?

    asked on January 2, 2011
  12. Physics

    A ball of mass 5.0 kg moving with speed of 2.0 m/s in the +x-direction hits a wall and bounces back with the same speed in the -x-direction. What is the change of momentum of the ball?

    asked on March 31, 2011
  13. information technology

    what are some of the negative impact of sharing information on a network?

    asked on February 15, 2010
  14. Algebra

    Thanks to those who helped with my question: y+3=-1/12(x-1)^2. The only thing I am still unsure of is how to write the equation for the directrix. Do I just simply write 0=3-3, (the values plugged in for y=k-p). Thanks again for your help!!

    asked on November 30, 2008
  15. english

    are the following command sentences get into the car sit down and read your book

    asked on October 9, 2008
  16. physics

    Cliff divers at Acapulco jump into the sea from a cliff 30.1 m high. At the level of the sea, a rock sticks out a horizontal distance of 9.19 m. The acceleration of gravity is 9.8 m/s With what minimum horizontal velocity must the cliff divers leave the

    asked on October 13, 2019
  17. math

    A metal bar weighs 8.15 ounces. 93% of the bar is silver. How many ounces of silver is in the bar

    asked on February 28, 2019
  18. Math

    adeline spent 5/8 her money on books and 1/2 of the remainder on food. what percentage of her money had she ledt?

    asked on March 5, 2018
  19. Algebra 1

    I get a bit confused so I hope someone can help with this question Consider the total amount that you are willing to spend on the buisness and how much it will cost you to make your items. Write an inequality that represents the fact that while making each

    asked on February 10, 2018
  20. Algebra

    two ships leave the same port at the same time. One travels north at 12 miles per hour. The other travel west at 5 miles per hour. After four hours, how far apart are the two ships?

    asked on December 5, 2017
  21. Algebra

    Richard takes 35 minutes to mow a lawn, but with the help of his friend Joe it only took him 15 minutes. If Joe worked alone, how long would it take Joe to mow the same lawn?

    asked on February 21, 2017
  22. Algebra 1

    Simplify using long division. (remember to show all your work.) 3. (72-8x^2+4x^3-36x)/(x-3) 4. (8b^3-6)/(2b-1) simplify the expression, if possible. state the excluded values, if any. 5. 10x^2-25X+15^5x-5 6.2w^2-18^w^2+6w+9

    asked on January 13, 2017
  23. Algebra 1

    Graph each function, identify the domain and range, and compare the graph with the graph of y=x^1. 1.y=x^-10 Domain: Range: compare: 2.y=x+3^1+3 Domain: Range: compare: solve and graph.

    asked on January 13, 2017
  24. Math

    How to put 0.46 ,0.6 , 0.41 from least to greatest

    asked on September 1, 2016
  25. Calc

    Hello! Really can't wrap my head around this so please help! Consider the function: f(x) = x^2+(1000-x)^2 First find out where it is increasing, and then use this fact to determine which number is larger: a) 1000^2 or b) 998^2 + 2^2 I found that the

    asked on August 7, 2016
  26. math

    Line segment segment CD has a slope of negative start fraction two over three end fraction and contains point C(−3, −6). What is the y-coordinate of point Q(−1, y) if segment QC is perpendicular to line segment segment CD question mark

    asked on March 30, 2016
  27. zambia school

    500ml of gas at 20 degrees celcius is under a pressure of 100cm of mercury what would be its volume at s.t.p?

    asked on October 4, 2015
  28. Physics

    Engineering a highway curve. If a car goes through a curve too fast, the car tends to slide out of the curve. A frictional force acts on a fast car to oppose the tendency to slide out of the curve. Consider a circular curve of radius R and bank angle θ,

    asked on July 6, 2015
  29. Physics

    1. A cannon ball M = 10.0kg with V = 2.4×102m/s is broken into 2 parts, if m1 = 6.4kg with angle 37° and m2 with 53°, what is the magnitude of v1 and v2?

    asked on April 5, 2015
  30. Science

    A train is traveling west with a force of 820 N, and then the conductor applies the brakes with a force of 500 N. What is the resulting net force on the train?

    asked on February 27, 2015
  31. physics

    Find the total displacement of a mouse that travels 1.0m north and then 0.8m south.

    asked on December 22, 2013
  32. Physics

    a simple pendulum consists of a 1.5 kg mass connected to a cored without and mass or friction. Initially the pendulum is vertically positioned when a 2.0 kg mass collides with ie, causing the pendulum to displace vertically upward 1.25 m. After the

    asked on April 22, 2013
  33. Geometry

    In Rhombus PQRS PQ=3a=7 and QR = 4a-11. What is the value of a?

    asked on January 9, 2013
  34. math

    How to multiply long fractions

    asked on October 29, 2012
  35. English 002

    Tell us why it is important to use good grammar, proper punctuation and clear senteces when you need to le someone know are displeased.

    asked on July 27, 2012
  36. English

    Many days of the year are "national" something or other day. For instance, National French Fry day is in July. Write a paragraph telling your reader what day you'd like to start. Remember to use complete sentences. Remember that all the sentences need to

    asked on July 12, 2012
  37. English 002

    Why complete senteces can help us in our writing at our jobs?

    asked on July 12, 2012
  38. geometry

    asked on October 11, 2011
  39. chemistry PLEASE HELP

    The density of water is 62.4 lbs/ft^3. what mass of water in kg will a rectangular can hold if it measures 2.00 ft by 3.00 ft by 6.00 inches?

    asked on September 27, 2011
  40. Math (please help!)

    You have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tails up, the ratio of heads up to tails up is 1 to 1.5. How many coins are tails up? How many coins in all?

    asked on April 19, 2011
  41. Math

    You have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tails up, the ratio of heads up to tails up is 1 to 1.5. How many coins are tails up? How many coins in all?

    asked on April 19, 2011
  42. math

    a jet flies with wind at 1100 km/h and against the same wind at 750 km/h.Find the rate of the wind and the speed of the jet in still air.

    asked on March 1, 2011
  43. geography

    one of the most recent benefits of the mountaineous regions of some caribbean islands,with their numerous rivers is: a.logging and recreation b.mining for gold and water sports c.eco-tourism and recreation d.hiking and hunting

    asked on February 22, 2010
  44. geography

    in the caribbean the potential for hydro electric power is greatest in which of the following groups of territories? a.Trinidad,Jamaica and Barbados b.Guyana,Jamaica and belize c.Trinidad,St.Lucia and St.Kitts d.Guyana,Barbados and the vergin island

    asked on February 22, 2010
  45. geography

    some material or load of the river is transported by dumping or hopping from one point to another by force of the water.this is called: a.traction load b.saltation c.solution d.suspension load

    asked on February 22, 2010
  46. biology

    a hibiscus plant was attacked by mealybugs which completely destroyed them.the mealybug was said to have thrived because it was not in its natural habitat.what is the likely effect of introducing an organism,like the mealybug,into a new habbitat?

    asked on February 15, 2010
  47. biology

    a hibiscus plant was attacked by mealybugs which completely destroyed them.what is the relationship between the mealybug and the hibiscus plant.

    asked on February 15, 2010
  48. information technology

    discuss the concept of teleconferencing and telecommuting.

    asked on February 15, 2010
  49. information technology

    describe the network of presentataion of rind,star and bus.

    asked on February 15, 2010
  50. physics

    what are renewable energurces?

    asked on February 11, 2010
  51. chemistry

    what are the physical properties of sucrose?

    asked on February 11, 2010
  52. physics

    what are some questions on work?

    asked on February 11, 2010
  53. physics

    what are some questions on momentum?

    asked on February 11, 2010
  54. chemistry

    an aqueous solution contains 2 solutes A&B.A is soluble in hexane,B is not.Hexane is liquid at rom temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe giving full practical details how you would produce a

    asked on February 11, 2010
  55. chemistry

    when is it better to use fractional distillation other than simple distillation?

    asked on February 11, 2010
  56. physics

    what are some examples of sources of energy?

    asked on February 11, 2010
  57. chemistry

    What are the physical properties of sucrose.

    asked on February 11, 2010
  58. chemistry

    A sample of sucrose as been contaminated with sand.How would you purify the sucrose

    asked on February 11, 2010
  59. chemistry

    An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce

    asked on February 11, 2010
  60. science

    An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce

    asked on February 11, 2010
  61. science

    A sample of sucrose as been contaminated with sand.How would you purify the sucrose

    asked on February 11, 2010
  62. chemistry

    describe how you would produce pure samples of iron and sulphur powders from a mixture of the two.

    asked on February 11, 2010
  63. Physics

    A rollercoaster car starts at rest on top of a frictionless hill of height 17 m, slides down to ground level, and then into a frictionless loop of radius 5 m. When the car is at the side of the loop (level with the center), find the magnitude of the car's

    asked on November 6, 2009
  64. Algebra

    My standard-form equation is (x+3)^2+(y+2)^2=4. Do I find the radius by doing the square root of four? I just wanted to check on this. Based on the example in my book, it seemed like this is the way to do this, but I wanted to make sure, because they

    asked on November 30, 2008
  65. Algebra

    (I posted this yesterday, if it looks familar, but no one was on who could help me). I am supposed to graph y+3=-1/12(x-1)^2. How do I find the equation of the directrix, and the coordinates of the vertex and the focus?

    asked on November 30, 2008
  66. Algebra

    Hi again. I am supposed to graph y+3=-1/12(x-1)^2. How do I find the equation of the directrix, and the coordinates of the vertex and the focus?

    asked on November 29, 2008
  67. Algebra

    I am supposed to write the standard equation of the parabola with the directrix x=1, and the vertex 6,2. I got y-6=1/4p(x-2)^2. Is this correct? I am supposed to graph y+3=-1/12(x-1)^2. I tried to find p, and I got 36. I don't think this could be correct,

    asked on November 29, 2008
  68. Algebra

    what is the equation of the line that passes though the points (-3,4) and (-9,6)

    asked on May 28, 2008
  69. math

    how would you make an equation for a decreasing linear relation?

    asked on September 17, 2007
  70. biology

    Indentify what category (protein, carbohydrate, or lipid) each of the following is: hemoglobin, ligaments, RNA, DNA, muscle fibers, cholesterol I thought RNA and DNA were nuecleotides.. but who knows? Thanks in advance. If those are the only 3 possible

    asked on September 27, 2006
  1. Math

    peepee paperrrrr

    posted on June 8, 2020
  2. Math fractions

    Eric practice piano and guitar for a total of eight hours this week he practice the piano for 1/4 of that time how many hours did Eric practice that piano this week

    posted on April 22, 2020
  3. Math

    a) $21,815.02

    posted on March 26, 2020
  4. math

    Garage

    posted on March 3, 2020
  5. arithmetic

    Well 20 :D

    posted on January 10, 2020
  6. Math

    uh the answer is obviously 66.666666 miles DUR BRUH, broski cookies

    posted on December 2, 2019
  7. Psychology

    We fully support. I also think that not always everything turns out in education, for example , in college. For example , I always got problems with chemistry. Therefore , this individual often used examples of ready-madeworks. Likee these:

    posted on February 21, 2019
  8. Math

    If 1/3 of the loaf was left, the whole loaf will be 3x, so the answer will be 18.

    posted on February 19, 2019
  9. Algebra please help answer

    It would still be 1 millimeter, because think about it. If it triples in length every 10, you would multiply. 1 times 3 is 1 plus the other minutes making it 1. TRUST ME!!!

    posted on January 9, 2019
  10. ALGEBRA HELP #3

    Part A: (3,1) Part B:(0,-5) (1, -3) Part C:(1,3) because they intersect at that point

    posted on December 15, 2018
  11. Math

    4.3

    posted on December 1, 2018
  12. bussness, if that's even a subject

    um.... reed you need to calm down and stop being so ignorant. Sueme asked for help if you cant help, don't comment. it's just that simple.

    posted on April 11, 2018
  13. math

    daaaaaaa hola is 52

    posted on March 12, 2018
  14. homework

    56m

    posted on March 7, 2018
  15. math

    21/8

    posted on March 2, 2017
  16. physics

    v= the square root of 2gh

    posted on January 8, 2017
  17. Biology Check answers

    Which of the following best describes what happens to an enzyme after it catalyzes a chemical reaction? Is the answer to that question correct?

    posted on September 26, 2016
  18. physics

    sqrt(2x760)/9.8 = 12s

    posted on May 25, 2016
  19. Chem 1411

    al3n2

    posted on April 1, 2016
  20. V/CV OR VC/V PATTERN

    vfddswWQ

    posted on February 18, 2014
  21. chemistry

    moles of urea:16(g)/60(g/mol)=0.267(mol) 39(g)*1(kg)/1000(g)=0.039kg m=0.267/0.039=6.846(mol/kg)

    posted on March 18, 2013
  22. 4th grade Math

    how much did maria bean plant grow between day 2 and day 3?

    posted on November 9, 2011
  23. math elementary

    how much did maria bean plant grow between day 2 and day 3

    posted on November 9, 2011
  24. Physics

    23m/s

    posted on June 9, 2011
  25. Chemistry

    How many moles of a gas at 100 degrees celciuos does it take to fill a 1.00L flask to a pressure of 1.50 atm?

    posted on November 19, 2010
  26. Algebra

    Whoops and one thing I forgot. Is it allowed for a parobala to open upward and have the directrix intercept it? Since p is greater than zero, it would have to open upward, but then the directrix would intercept the parobala (the directrix follows the x

    posted on November 30, 2008
  27. Biology

    I'm sorry, I don't think that's the answer. I believe it's only one word, and it's one of the organelles in the cell. Thank you for answering, but is there any one word organelle that you think might be the answer?

    posted on March 18, 2008
  28. Biology

    Thank you. This was very helpful.

    posted on March 18, 2008
  29. speed of light

    please answer the question my physics homework is due tomorrow XD

    posted on August 29, 2007