Most popular questions and responses by marina
  1. Math

    Kelly has 236 feet of fence to use to enclose a rectan space for her dog. She wants the width to be 23 feet. rectangle that could be the space for Kelly's dog. La length and the width.

    asked on April 6, 2017
  2. English - Please read.

    I know what an epic simile is but I'm trouble finding two epic similes in these line I've given below. And I also need to know why I think the author used these two epic similes Please help! Here's the lines I have to find the two from : The Odyssey : Book

    asked on February 17, 2015
  3. physics

    how far can a cyclist travel in 2.5 hrs along a straight road if her average speed is 18 km. per hr? (ignore the actual question, what my teacher wants me to do is find the average speed and average velocity using these measurements.) any help is greatly

    asked on July 8, 2008
  4. Chem

    An analysis of generic antacid tablets labeled to contain 250mg of CaCO3 (MM= 100.09g/mol) per tablet of active ingredient was performed. The analysis was performed by dissolving a 0.550g sample of the antacid tablet in 75.00mL of 0.1055M HCl. The excess

    asked on October 6, 2013
  5. College Algebra

    A wooden artifact from an ancient tomb contains 45% of the carbon-14 that is present in living trees. How long ago, to the nearest year, was the artifact made

    asked on September 24, 2015
  6. Math

    A projectile is fired straight up from a cliff which is 200 feet above ground with an initial velocity of 220 ft/sec. Assume that the only force affecting the projectile during flight is from gravity which produces a downward acceleration 32 ft/sec^2. Find

    asked on December 8, 2010
  7. Physics

    A projectile is fired straight up from a cliff which is 200 feet above ground with an initial velocity of 220 ft/sec. Assume that the only force affecting the projectile during flight is from gravity which produces a downward acceleration 32 ft/sec^2. Find

    asked on December 8, 2010
  8. Physics

    Starting from rest, a horse pull a 250-kg cart for a distance of 1,5km. it reaches a speed of 0,38m/s by the time it has walked 50,0m and then walks at constant speed.fictional force 260n.each gram of oats the horse eats releases 9kJ of energy. 10% of this

    asked on May 8, 2014
  9. world geography

    The largest mass migration in human history has taken place in china. why ?

    asked on October 23, 2013
  10. Chemistry

    The solubility of insoluble substances changes depending on the nature of the solution. Below are two solutions in which copper (II) hydroxide is dissolved; in each case, the solubility is not the same as it is in pure water. a. For each solution state

    asked on January 3, 2016
  11. physics

    A row of blocks are lined up with masses of 1.10 kg, 2.72 kg and 4.05 kg. The masses are then pushed forward by a 14.3 N force applied to the 1.10 kg block. If the table is frictionless, how much force does the 2.72 kg block exert on the 4.05 kg block?

    asked on October 19, 2016
  12. physics

    A golfer hits a ball off a tee from an elevated platform 13m above the ground. if the golf ball leaves the tee at 85 m/s @ 15 degrees, find the flight time, the maximum height above the ground and the horizontal displacement of the golf ball.

    asked on January 20, 2014
  13. Precalc

    There are 12 balloons in a bag: 3 each of blue, green, red, and yellow. Three balloons are chosen at random. Find the probability that all 3 of the balloons are green, Thank you so much for the help.

    asked on January 21, 2019
  14. Trigonometry

    I am having trouble solving this. A rocket tracking station has two telescopes A and B placed 1.7 miles apart. The telescopes lock onto a rocket and transmit their angles of elevation to a computer after a rocket launch. What is the distance to the rocket

    asked on October 27, 2015
  15. Geometry

    Given IE is congruent to GH, EF is congruent to HF. F is the midpoint of GÌ. Prove the triangles EFI is congruent to HFG. . Can you please help me to understand how to do this problem? I don't understand how to find a proof. Thank you so much for your

    asked on November 14, 2016
  16. Pre Calculus

    The doubling period of a baterial population is 10 minutes. At time t=80 minutes, the baterial population was 50000 1What was the initial population at time t=0 2Find the size of the baterial population after 4 hours

    asked on September 24, 2015
  17. math

    of 500 employees, 200 participate in a company's profit- sharing plan (P), 400 have major-medical insurance coverage (M). and 150 employees participate in both programs. Construct a Venn diagram and find out the probability that a randomly-selected

    asked on October 12, 2011
  18. Algebra

    Jennie skated for 2 5/6 hours on Saturday and 1 3/6 hours on Sunday. Her goal was to skate 6 hours over the weekend. How much longer does Jennie need goal? Show your work.

    asked on April 25, 2017
  19. calculus - limits

    In the theory of relativity, the mass of a particle with velocity v is m = m0 / sqrt(1-v^2 / c^2) where m0 is mass of the particle at rest and c is the speed of light. What happens as v approaches c^-?

    asked on October 1, 2009
  20. Algebra

    A wooden artifact from an ancient tomb contains 45 percent of the carbon-14 that is present in living trees. How long ago, to the nearest year, was the artifact made

    asked on September 24, 2015
  21. Math

    The circle graph to the right shows how the Miller family spends their income. How much money do the Millers spend on vacation each year? Rent:35% Utilities:4% Miscellaneous:15% Food:24% Vacation:10% Savings:12% Please Answer As Soon As Possible.

    asked on February 21, 2019
  22. math

    Mr Joyce invested $ 25,000, part at 4% interest and the remainder at 7% interest. The total income he received from his investment was $1,450. How much did he invest at each interest rate? Thank you

    asked on October 25, 2015
  23. 10th grade trigonometry

    A wheelchair ramp is said to have an angle of 4.5° with the ground. the deck at the top of the ramp is 20 inches above ground level. a) how long should the ramp be? round your answer to the nearest tenth of an inch. c) how far from the deck should the

    asked on August 22, 2013
  24. College Algebra

    Find the time required for an investment of 5000 dollars to grow to 7900 dollars at an interest rate of 7.5% per year, compounded quarterly

    asked on September 24, 2015
  25. physics

    A race car track has been constructed with the a bank angle of 32.7° so there is no friction force. The race car track has a curve radius of 394 m. What speeds, for the race cars, has the track been designed to accommodate?

    asked on October 23, 2016
  26. Math

    Jack is learning to ride a bicycle. In his first try, he rode for 1/100mile. The second time he rode for 5/100 mile. In the next two tries, he rode successfully for 2/10 mile and lo 4/10 mile Part A What is the total distance he rode the bike in four

    asked on April 25, 2017
  27. physics

    determine the stopping distances for an auto0mobile with the initial speed of 90km/hand the human reaction time of 1.0s: (a) for an acceleration a= -40m/s^2; (b) for a = -8.0m/s^2 use one of newtons four equations to solve.... i don't get this at

    asked on July 19, 2008
  28. physics

    A 50 foot see-saw has 4 kids sitting on it. A 62 lb. girl sits on the left end, with a 76 lb. girl sitting 2.5 feet in front of her. On the right side, a 96 lb. boy sits on the end and has another boy sitting 2.5 feet in front of him. How much does this

    asked on January 20, 2014
  29. Chemistry

    An iron nail with a mass of 0.750 g was dissolved in dilute sulfuric acid and diluted to 100.0 mL volume. A 10.0 mL aliquot of this solution was then titrated with standard 0.200 M potassium permanganate solution, according to the following equation: MnO4-

    asked on January 3, 2016
  30. physics

    Two cables suspend a 500 N sign above the hallway. The left cable makes a 40 degree angle with the ceiling and the right cable makes a 50 degree angle with the ceiling. What is the tension in the left and right cables?

    asked on January 20, 2014
  31. history

    In England in the 1700's, many poor people in rural areas left their farms and moved to cities in search of work. Yet life in cities was not easy, and jobs were very hard to find. from what you know about England in the 1700's, can you explain why so many

    asked on August 31, 2009
  32. Algebra

    You go to the doctor and he gives you 13 milligrams of radioactive dye. After 20 minutes, 4.5 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will

    asked on September 24, 2015
  33. chem


    asked on March 12, 2010
  34. Science: Physics and Chemistry

    Can someone please help me with this??? I was given a systems equation. Two masses are on a flat frictionless surface tied together. There is a pulley type thing and another mass is hanging over the edge of the table. It is attatched to the other 2 masses.

    asked on February 8, 2010
  35. science (heeeeelp)

    Heloooo? can somebody plz answer my questions below? I need help! You'll learn far more if you research the questions and their answers yourself. We don't give answers on this forum. If you want to post your own answers, we'll be glad to critique them.

    asked on May 29, 2007
  36. physics

    A group of construction workers are building a house and want to lower down an excess bundle of 2390 kg bricks to ground. They tie one end of a rope to the bundle of bricks, loop it through a pulley, and tie the other end of the rope to a toolbox. If the

    asked on October 19, 2016
  37. Math

    The table shows the number of people switching to a new telecommunications company over a 7-day period in August. Day=number of people 1=10 2=17 3=37 4=79 5=106 6=231 7=500 Using this estimate how many people will switch on august 31st. * it's an

    asked on May 6, 2014
  38. geometry

    in the xy coordinate plane point b (-3,2) and point d (3,-4)are opposite vertices of square abcd if point h is the midpoint of line segment bc what is the area of triangle ahd ?

    asked on September 26, 2011
  39. science

    I was given a systems equation. Two masses are on a flat frictionless surface tied together. There is a pulley type thing and another mass is hanging over the edge of the table. It is attatched to the other 2 masses. It has no Fn, only Fg because it is

    asked on February 8, 2010
  40. Math

    A landscape architect is designing a new park for the city.His design must include the following types of figures. Exactly 4 boundary segments Exactly 1 pair of boundary segments must be parallel The intersection of at least two of the boundary segments

    asked on March 9, 2017
  41. Spanish

    I am currently in Spanish 1. I am gradually catching on to Spanish, but my question is.. Can you help clarify to me when I should put a small word before a verb or noun.. for instance "los libros" How do I know whether its La, los and etc.? I know it has

    asked on February 11, 2015
  42. Math

    Express sin(x+y+z) in terms of cosines and sines of x, y and z

    asked on May 13, 2014
  43. physics

    A girl with a mass of 83 kg is climbing in a tree 20 m above the ground. If she lands on a trampoline with a constant of 312 N/m, how far will the trampoline stretch and how fast will she be moving just prior to landing on it?

    asked on January 23, 2014
  44. language could you please check my work

    true(t) or false (f) 1)f reading is not a real hobby 2)f an activity that is done outdoors is not a hobby 3)t photography is a popular hobby 4)t building a cabnint can be part of a hobby 5)f cooking is never considered recreation 6)t model building is very

    asked on April 14, 2010
  45. English/Grammar

    My teacher didn't explain today's lessons about complete and simple predicates and subjects. How do you identiy them and what are they? Please give examples and explain them throughly.

    asked on September 10, 2009
  46. Math

    The population of a town double every 10 years from 1960 to 1990.what was the percent increase in population during this time

    asked on February 28, 2018
  47. physics

    A 625 N crate, which is at rest on the floor, is pulled along the floor by a horizontal force of 85 N. The coefficient of friction is 0.11. How far will the crate go in 4.5 seconds?

    asked on January 20, 2014
  48. physics

    What is the apparent weight of a 55 kg person in an elevator accelerating downward at 2.2 m/s2?

    asked on January 20, 2014
  49. Biology

    Caenorhabditis elegans hermaphrodites have six different homologous chromosome pairs: five pairs of autosomes (called I-V) and one pair of sex chromosomes (called X). Hermaphrodites can either self-fertilize or they can be fertilized by males (which only

    asked on October 7, 2013
  50. social studies

    who were among the settlers at sagadahoc and who was thier leader?

    asked on August 19, 2011
  51. algebra 1

    Bushes that bites kass kass had been doing yard work all summer to save for a new bike and ms oleonary had asked her to plant a row of barberry bushes on each side of her drive way. se specified to kass that there should be a 1 foot space between the

    asked on September 19, 2010
  52. biology

    what are organisms that can synthesize energy-containing organic compounds? organisms that add to the total energy stored in organic compounds? organisms that require sunlight in order to survive? choices: a) autotrophs b) heterotrophs c) both any help is

    asked on October 18, 2009
  53. Math

    Joleen earns $250 plus a commission of 3% of her sales each week. This week she wants to earn $460. How much in sales does she need to meet her goal?

    asked on November 3, 2016
  54. math

    Mrs. Crawford has invested $ 6,000 at 3% interest. How much additional money should she invest at 8% interest so that the total income will be 4% of her total investment? Scott asked you to make 10 gal. of fruit punch that contains 85% fruit juice by

    asked on October 26, 2015
  55. English

    I am writing an essay about why marriage is an important institution. I have several ideas such as financial benefits,more stability,more appreciation by the society. What other benefits of marriage are out there? Thank you in advance!

    asked on November 21, 2011
  56. Sat prep English

    Choose the word which best completes the sentence Neither the cat nor the dog (play, plays) together. And Neither the cat nor the dogs (play, plays) together. And Neither the cats nor the dogs (play, plays) together.

    asked on October 14, 2011
  57. social studies

    what were the effects of the civil war? i git some answers: loss or shortage of food, and inflation . it would help to get some more answers! THANKS!! How about the preservation of the union of the country and the abolition of slavery? What about the Jim

    asked on June 4, 2007
  58. Math

    A camera lens rotates 15° and then stops to take a picture.They it rotates 5 take another picture. The camera takes two pictures in each rotation cycle. How many cycles does the camera lens go through to reach 100 Justify your answer.

    asked on March 8, 2017
  59. Algebra

    A clock's minute hand moves 60 grade in 10 minutes and 180 grade in 30 minutes low far does it move from 11:00 to 11:40? What is the problem asking you to find? The measure of the angle on a clock from What do you need to know to solve the problem? What is

    asked on March 3, 2017
  60. Math

    Dale grew 63 tomatoes. She sold them at a roadside stand. She put 5 tomatoes in each carton and sold each full carton for $3. How much money will she make for all of the full cartons?

    asked on February 1, 2017
  61. Math algebra

    The sum of the measures of the angles of a triangle is 180° Find the three angles of a triangle if one angle is 20° greater than the smallest angle and the third angle is twice the smallest angle.

    asked on November 10, 2016
  62. physics

    a 280. kg crate, to the right of the pulley, is released from rest and begins to fall to the ground. If the mass on the left is m=160. m=160. kg, what is the magnitude of the tension of the rope attached to the 280. kg crate? Assume the rope and pulley are

    asked on October 19, 2016
  63. Psychology & operational definition

    I came up with some examples on my own, but I'm not sure if I'm heading in the correct direction. Any help would be great. Here are my examples: 1. My grandmother's recipe for red velvet cake 2. An actress has memorized her lines when she can repeat all of

    asked on March 22, 2015
  64. Math

    An isosceles triangle has an area A, an apex angle 2 theta, and a height of h. Determine an expression for theta in terms of A and h.

    asked on May 13, 2014
  65. Math

    The table shows the number of people switching to a new telecommunications company over a 7-day period in August. Day=number of people 1=10 2=17 3=37 4=79 5=106 6=231 7=500 Using this estimate how many people will switch on august 31st. * it's an

    asked on May 7, 2014
  66. physics

    A soccer ball is kicked off of the ground at 17 ft/sec @ 30 degrees. Determine the maximum height above the ground the ball reaches and how far downfield the ball lands.

    asked on January 20, 2014
  67. business law

    Libertarians are also referred to as economic socialists. True Is that right?? The Defence of Necessity would likely have been successful in Latimer's case if his defence lawyer could have proven that this daughter Tracy wanted to die. Question 8 answers

    asked on September 16, 2009
  68. Political science

    I don't even know where to start with this. Please analyze the role of norms in the international system. Choose one international norm that has been promoted by an international organization and on the basis of real world examples analyze whether or not

    asked on November 15, 2006
  69. Algebra

    A large angle is made up of two smaller angles. The smaller angles measure 48 and 11. What is the measure of the large angle?

    asked on March 2, 2017
  70. Math

    Simplify and evaluate the expression for a = -0.5, b = 2.5 2.5a - 3b(-4.1 + a(-3.3b - b) - b) + a

    asked on March 1, 2016
  71. algebra

    find an equation of the linear function f using the given information ; f(x) increases by 6 when x increases by 3.

    asked on December 9, 2015
  72. Algebra

    I am having a hard time with this question. A boat went 15 miles downstream in 1 hour and then returned upstream to its dock in 5/3 hours. if the current of the stream was constant, find the speed of the boat in still water and the speed of the current

    asked on October 27, 2015
  73. Algebra

    How to simplify 6y (3y

    asked on February 25, 2015
  74. physics

    How much force is needed to accelerate a 125 kg block up a 35 degree include at 3.4 m/s2 if the coefficient of friction is 0.28?

    asked on January 20, 2014
  75. physic

    What is the necessary coefficient of friction needed to keep a 1200 kg car on a road moving at a speed of 27 m/s on a turn with a radius of 30 meters?

    asked on January 20, 2014
  76. College Algebra

    In an assembly line of a factory, which produces networking switching hubs, two robots are utilized. The first one (A) is able to produce 40 microchips per hour, whereas the second one (B) produces 30 microchips per hour. For a total production of 400

    asked on November 16, 2012
  77. World History Honors

    What kinds of people sailed to the New World in the 1400s?

    asked on October 24, 2012
  78. biology

    draw digrams of phases of meiosis in a cell with 2N=. include with both divisional sequence, but not draw any of the subdivision of the phase e.g early prophase. distinghish between chromosomes from each parent, and detail the event of synapsis,

    asked on September 26, 2012
  79. Geometry

    The line m has the equarion y= 2x + 1. The line n is perpendicular to m and passes through the point A(2,1). Write an equation of n

    asked on January 13, 2012
  80. Math help please

    1.) 4(2-a)^2-81 2.) -(x-y)^3 3.)3x^2-27(2-x)^2 4.) 9(y-1)^2-25

    asked on October 3, 2011
  81. math

    40 children in the class 3 out of every 4 wears jeans how many students in the class are wearing jeans?

    asked on June 15, 2011
  82. English

    As an English teacher where would i go in ENgland and Why??

    asked on April 24, 2011
  83. Learning Chater School

    Dana has a piggy bank(she is just starting to save money in her piggy bank). 1- All of the coins in her bank expect two quarters. 2- All of the coins in her bank except two are nickels 3- All ofthe coins in her bank except two are pennies . How much money

    asked on February 8, 2011
  84. Science: Physics and Chemistry

    I was given a systems equation. Two masses are on a flat frictionless surface tied together. There is a pulley type thing and another mass is hanging over the edge of the table. It is attatched to the other 2 masses. It has no Fn, only Fg because it is

    asked on February 8, 2010
  85. biology

    1. name an organism in which the respiratory and circulatory systems are separate. 2. name an organism with a closed circulatory system that is not used for gas exchange. 3. name an organism whose waste gases accumulate in one system but then move to

    asked on November 25, 2009
  86. chem!

    If a particular solvent dissolves both the compound being purified and impurities at room temperature, is this a good solvent for recrytallization of the compound? Explain your answer.

    asked on June 18, 2009
  87. science

    i need help with the essay part of my exams so if you would answer any of these questions for me id be glad to study them, knowing ill get them right. *explain how parasites are different from scavengers.give an example each. *how would seasons on earth be

    asked on May 29, 2007
  88. math

    A 1963 Chevy Bel Air, a classic car today, cost $2400 new in mid-1963. How much would that be in 2012 dollars?

    asked on August 14, 2016
  89. Art - Drawing

    Can you give me some tips on how to draw graffiti (anything really)? I am good with drawing something but the thing is I have to look a picture to draw it. Its almost as if I don't have enough imagination. But since that's how I've been drawing, tips

    asked on February 11, 2015
  90. pre-cal.

    simplify: 2(x+h)squared+5(x+h)-6-(2x squared + 5x - 6)

    asked on February 16, 2014
  91. physics

    A bomb is dropped out of a plane 100 m above the ground, how fast will it be moving when it hits the ground?

    asked on January 23, 2014
  92. physics

    A boy runs off the edge of a 5 foot high wall @ 2.5 ft/sec. How long will he spend in the air? How far from the base of the wall will he land?

    asked on January 20, 2014
  93. physics

    Compute the force of attraction between a 25 kg. mass and a 45 kg. mass that are 9.6 meters apart from center to center.

    asked on January 20, 2014
  94. algebra

    How do i write an equation of a line with the given slope and y-intercept for m= 2/9, b=3?

    asked on November 20, 2013
  95. college application

    i am using common app and they asked to write about : Indicate a person who has had a significant influence on you, and describe that influence. so is it only one person or could be more?

    asked on December 18, 2012
  96. chemistry

    Pvap (mm-Hg) of 100g 24%NaOH in H2O @100C? When Pvap pure H2O @100C is 760mm-Hg Pls where to start solving this problem? What is the equation? What are the staeps to get to the right answer?

    asked on May 20, 2012
  97. Arabic

    I need to know the root word for atlas in arabic?

    asked on April 25, 2012
  98. physics

    the constant velocity of a ball is (3x+2y)m/sec. find the distance traveled in the y direction in 2 seconds (x and y are unit vectors)?

    asked on October 19, 2011
  99. Latin

    Hey I need help finding the English meaning of each of these Latin words. 1 habeo to have 2 3 habemus 4 5 habes 6 you have 7 habetis 8 9 habet 10 11 habent 12

    asked on August 17, 2011
  100. English

    If anyone has read the novel the power of one can you tell me the individuality peekay displayed in the novel?

    asked on June 19, 2010


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