Xavier

Newest questions and responses by Xavier
  1. Biology

    Conservationists establish that the minimal viable population of a population of tigers in an extensive geographical area is 16. The current population of tigers is 10. What is likely to happen to the population of tigers? A. Tigers from adjoining

    asked on October 17, 2018
  2. Math

    Janie couch is 7 1/2feetlong the scale of the dollhouse is 1inch:2feet what is the length if the miniature couch for the dollhouse

    asked on September 6, 2018
  3. Math

    In the Greenwich Public Library, about one-tenth of the books are overdue when they are returned. An average of 580 books are returned to the library each day. About how many books could be expected to be returned on time each day?

    asked on March 6, 2018
  4. Math

    one of the valves on the hoover dam releases 40,000 gallons of water per second. what is the rate in gallons per minute?

    asked on January 23, 2018
  5. Math

    A man fishing in Lake Erie near Erie, Pennsylvania, speared that state's record carp while bow fishing. The fish was 49 inches long and weighed 54 pounds, 4 ounces. to the nearest thousandth of a pound, how many pounds per inch is that?

    asked on January 11, 2018
  6. Math

    It makes 3/4 of an hour for an automated sprinkler to cover 2/7 of a lawn.After an hour has passed ,what fraction of a lawn has been covered

    asked on January 9, 2018
  7. Math

    what is 420/69

    asked on December 10, 2017
  8. Social studies Grade 7

    Why was northern Italy a natural birthplace for the Renaissance? Anything would help. Thanks.

    asked on November 8, 2017
  9. math

    True or false 1.) The set of integers contains the set of rational numbers 2.)Every repeating decimal is a rational number 3.)Every square root is an irrational number 4.) the set of whole numbers contains the set of rational number 5.)every terminating

    asked on October 30, 2017
  10. algebra

    I can't find any good videos but does anybody here know how to do something like sin 65° by hand

    asked on September 11, 2017
  11. Algebra

    How many solutions as a system of equations have? 2X= -10y + 6 & x+5y=3

    asked on June 17, 2017
  12. Calculus

    Two horizontal forces,  and , are acting on a box, but only  is shown in the drawing.  can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that  = +4.2 N

    asked on January 5, 2017
  13. Trigonometry

    Determine the angular velocity if 2.5 revolutions are completed in 10 seconds. Round to the nearest tenth.

    asked on December 6, 2016
  14. Trigonometry

    Write an equation of sin with amplitude = 2, period = 2pi, and vertical shift = 5

    asked on December 6, 2016
  15. Trigonometry

    Write an equation of cotangent with period = 3pi, phase shift = -pi, and vertical shift = -1

    asked on December 6, 2016
  16. trigonometry

    Write an equation of secant with period = pi, phase shift = -pi/2, and vertical shift = 3

    asked on December 6, 2016
  17. PE

    why do you think it is necessary to identify your values when using the decide process to make the important decision

    asked on October 4, 2016
  18. english

    why does tasha the narrator in the tail think that her summer is ruined

    asked on September 20, 2016
  19. physics

    On a banked race track, the smallest circular path on which cars can move has a radius of 101 m, while the largest has a radius of 163 m, as the drawing illustrates. The height of the outer wall is 19.0 m. Find (a) the smallest and (b) the largest speed at

    asked on September 19, 2016
  20. Math

    I would like to put these fractions in order from least to greatest: 3/8, 5/8, 4/8, 2/8, 7/8

    asked on June 21, 2016
  21. Algebra

    A square has an area of 400 square miles. What is the length of each side of the square?

    asked on April 15, 2016
  22. math

    Maggie has a box of 300 colored blocks.The box has a equal number of green and blue blocks and an equal number of red and yellow blocks.If Maggie arranged all of the green blocks in stacks of 10 and all of the blue blocks in stacks of 7,how many yellow

    asked on March 25, 2016
  23. history

    how did farming in the northeast differ from that in the south

    asked on February 5, 2016
  24. Physics

    A tangential force acts on the rim of a 2.0 kilogram disk-shaped wheel (0.50 m radius) and gives the wheel an angular acceleration of 4.8 rad/s^2. Neglect friction and find the magnitude of the force.

    asked on April 4, 2015
  25. English

    How does the setting of this memoir affect its plot? What does this question means? memior? affect its plot?

    asked on March 13, 2015
  26. English

    It was a night to remember. Marian Anderson was one my favorite singers. Her rendition of the song “Were You There” ran through my head as we walked toward the Metropolitan Opera House. Of course, I listened to the radio when she sang at the Lincoln

    asked on March 13, 2015
  27. Physics

    A cannon ball is fired horizontally with an initial speed of 75 m/s from the top of a 50-m tall building. When the ball hits the ground, its velocity vector makes an angle θ with the horizontal. What is θ

    asked on February 11, 2015
  28. Chemistry

    Calculate the kinetic energy change in the water that occurs when 10,000lb/hr flow in a pipe that is reduced from a diameter of 2 in. to a diameter to 1 in. Any ideas on solving this? The answer is 2.7 lbf*ft.

    asked on November 7, 2014
  29. Need help badly, Science

    Suppose the incident sunlight at ground level has a power density of 0.87 kW m−2 at noon. What is the maximum rate of loss of water from a lake of area 1.0 ha? (1 ha = 104 m2.) Assume that all the radiant energy is absorbed. any ideas on how do i get

    asked on September 28, 2014
  30. Math

    Bobby has some marbles.one-third of them are blue.one-half of them are red and the rest are green.if he has 7 green marbles, how many marbles does have altogether?

    asked on September 22, 2014
  31. material balance

    Wet air containing 4.0 mole% water vapor is passed through a column of calcium chloride pellets. The pellets adsorb 97.0% of the water and none of the other constituents of the air. The column packing was initially dry and had a mass of 3.40kg. Following

    asked on July 12, 2014
  32. Calculus II

    Solve the initial value problem using Taylor Series and the following conditions: y'(t) = y(t) + 2t y(0) = A

    asked on February 3, 2014
  33. media

    I realize that this may sound like a unique question, but please humor me anyway. Is there a place where people can efficiently watch relatively recent movies in their entirety for free? Or is that illegal?

    asked on December 14, 2013
  34. Density Problem

    The moon has radius 1740 km and mass 7.35x10^22? kg.What is its average density?

    asked on November 17, 2013
  35. Math

    the distance between the center of symmetry of a parallelogram and its longer side is equal to 12 cm. The area of the parallelogram is 720 cm^2, and its perimeter is 140 cm. Determine the length of the longer diagonal of the parallelogram

    asked on October 29, 2013
  36. Physics

    A 0.02kg bullet collides with a 5.75kg pendulum. After the collision, the pair swings up to a maximum height of 0.386m. Determine the velocity of the bullet just before impact.

    asked on October 6, 2013
  37. Physics

    A 0.02kg bullet collides with a 5.75kg pendulum. After the collision, the pair swings up to a maximum height of 0.386m. Determine the velocity of the bullet just before impact.

    asked on October 6, 2013
  38. ALGEBRA

    HOW DO I SOLVE THIS PLEASE 5ãx =ãx -12

    asked on September 15, 2013
  39. algebra

    How do I solve this problem  ã2x -7+8=11

    asked on September 15, 2013
  40. Math, Related Rates

    Consider the hyperbola y = 1/x and think of it as a slide. A particle slides along the hyperbola so that its x-coordinate is increasing at a rate of f(x) units/sec. If its y-coordinate is decreasing at a constant rate of 1 unit/sec, what is f(x)? -I

    asked on September 10, 2013
  41. math

    The Flour Power Bakery makes 200 cherry cheesecakes at a cost of $2.45 each. If a spoilage rate of 5% is anticipated, at what price should the cakes be sold to achieve a 40% markup based on cost?

    asked on September 1, 2013
  42. Physics Normal force

    When an object exerts a normal force on a surface, the force is My answer is perpendicular to the surface. Am i correct?

    asked on August 3, 2013
  43. Chemistry

    What mass of KIO3 is needed to convert the copper in 0.200g of CuSO4.H2O to Cu(IO3)2? my answer is: 0.828g Cu(IO3)2 x (2*214.003 MolarM KIO3/ 413.36 MolarM Cu(IO3) = 0.857g KIO3 could you please check if i got it right

    asked on July 17, 2013
  44. Chemistry

    What mass of AgI can be produced from a 0.512g sample that assays 20.1% ALI3?

    asked on July 13, 2013
  45. Physics

    Suppose this dude wants to be able to touch the rim of a basketball goal. The rim is 3.048 m above the ground. The dude can reach up 2.45 m with his feet on the ground. (a) If the dude can achieve a liftoff speed of 2.80 m/s, what is his maximum upward

    asked on July 10, 2013
  46. Chemistry help

    Average human blood serum contains 18 mg of K+ Calculate: a) the molar concentration for each of these species; use 1.00 g/mL for the density of serum. I have worked as of this (18 mg K+/100 mL)(1mL/1g)(1 mmol/39.10mg)(1g/1000mg). But it seems that some

    asked on July 7, 2013
  47. chemistry about buret

    In the experiment of buret calibration, what is the importance of having total buret correction? And does the density of the water at a specific temperature affect this corrections?

    asked on July 2, 2013
  48. Mathematics

    If a man and a half finishes a job and a half within a day and a half, how many men can finish 3 jobs within 3 days. Please I need help, I am not so sure with my answer of 6. I would like to verify it. THANKS

    asked on June 25, 2013
  49. Math Algebra II

    I am confuse how to solve a relation function such as f(x) = 1x -12. show me example on how resolve this problem

    asked on June 18, 2013
  50. Chemistry

    Sea water contains an average of 270 ppm of sulfate ion. Calculate the molar concentration of sulfate given that the average density of sea water is 1.02 g/ml. -At first i tried assuming that density is 1.00 g/ml which is a common practice in ppm problems

    asked on June 12, 2013
  51. chemistry

    how many milliliter of .750M sulfuric acid are needed to neutralize completely 20 g of NaOH?

    asked on April 22, 2013
  52. MATH

    A tin is a right circular cylinder with a diameter of 6 meters and a height of 10 meters. What is the surface area of this tin, in terms of pi?

    asked on March 1, 2013
  53. MATH

    Posted by xavier on Monday, February 11, 2013 at 8:28pm. Hello... Asking for help with this one math question to understand how to do the rest of related question? thank you in advance.... shape 1 (3.5,-8.5) ,(3.5,-9) , (3,-10.5) , (2,-12)

    asked on February 12, 2013
  54. math

    shape 1 (3.5,-8.5) ,(3.5,-9) , (3,-10.5) , (2,-12)

    asked on February 12, 2013
  55. Analytic Geometry

    Find the equation of the parabola through (-15/4 ,2) and (0,-1) whose axis is parallel to the x-axis and the latus rectum equal to 4

    asked on February 11, 2013
  56. Analytic Geometry

    What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

    asked on January 31, 2013
  57. Analytic Geometry

    What is the equation of the circle touching the lines x-3y-11=0 and 3x-y-9=0 having its center on the line x+2y+19=0

    asked on January 31, 2013
  58. Analytic Geometry

    Find the equation of the circle, with radius 1, tangent to the line 3x+4y=5 and having its center on the line x+2y=0

    asked on January 31, 2013
  59. Analytic Geometry

    Find the equation of a circle passing through (3,7) and tangent to the lines x-3y+8=0 and y=3x. Please help me

    asked on January 25, 2013
  60. Analytic Geometry

    Find the equation of a circle passing through (3,7) and tangent to the line x-3y+8=0

    asked on January 25, 2013
  61. Chemistry

    Please help, do you have any pointers on how to use linear regression in determining the reaction order

    asked on January 17, 2013
  62. Analytic geometry

    What is the distance of the line x+6y-7=0 from the origin? Please help, is my answer -7sqrt37/37 correct? If not, please help me whats the right solution

    asked on January 12, 2013
  63. geometry

    A moving point is always equidistant from (-3,2) and the line 2x-y+2=0. What is the equation of its locus? how do you solve this?

    asked on January 7, 2013
  64. geometry

    Find the equation of a line parallel to 5x +6y = 0 at distance sqrt 61 from (-3,7) I need help please. I don't have any idea

    asked on January 7, 2013
  65. Algebra

    The first element of a geometric sequence is 1 and the common ratio is 3; determine the smallest 4 digit numeral that represents an element of this geometric sequence

    asked on December 16, 2012
  66. geometry

    find the equation of the line through (6, -3) and (-4, -7)

    asked on December 13, 2012
  67. Analytic Geometry

    Please help me to solve this problem. Find the equation of the locus of a moving point if the sum of the slopes of the line joining it to (1,3) and (4,-2) is 1.

    asked on December 13, 2012
  68. Chemistry

    The ΔHof of gaseous dimethyl ether (CH3OCH3) is –185.4 kJ/mol; the vapour pressure is 1.00 atm at –23.7oC and 0.526 atm at –37.8oC. a) Calculate ΔHovap of dimethyl ether. b) Calculate ΔHof of liquid dimethyl ether Any idead how to calculate for

    asked on December 11, 2012
  69. Chemistry HELP

    A 0.75–L bottle is cleaned, dried, and closed in a room where the air is 22oC and 44% relative humidity (that is, the water vapour in the air is 0.44 of the equilibrium vapour pressure at 22oC). The bottle is brought outside and stored at 0.0oC. just

    asked on December 11, 2012
  70. Chemistry

    A 0.75 L bottle is cleaned, dried, and closed in a room where the air is 22°C and 47% relative humidity (that is, the water vapor in the air is 0.47 of the equilibrium vapor pressure at 22°C). The bottle is brought outside and stored at 0.0°C. My

    asked on December 11, 2012
  71. Chemistry

    I need help with this problem A 0.75–L bottle is cleaned, dried, and closed in a room where the air is 22oC and 44% relative humidity (that is, the water vapour in the air is 0.44 of the equilibrium vapour pressure at 22oC). The bottle is brought outside

    asked on December 9, 2012
  72. Chemistry

    At a local convenience store, you purchase a cup of coffee, but, at 98.4oC, it is too hot to drink. You add 23.0 g of ice that is –2.2oC to 248 mL of the coffee. What is the final temperature of the coffee? (Assume the heat capacity and density of the

    asked on December 9, 2012
  73. Chemistry

    A 0.75–L bottle is cleaned, dried, and closed in a room where the air is 22oC and 44% relative humidity (that is, the water vapour in the air is 0.44 of the equilibrium vapour pressure at 22oC). The bottle is brought outside and stored at 0.0oC. a) What

    asked on December 9, 2012
  74. Chemistry

    Methyl salicylate, C8H8O3, the odorous constituent of oil of wintergreen, has a vapour pressure of 1.00 torr at 54.3oC and 10.0 torr at 95.3oC. a) What is its vapour pressure at 25oC? b) What is the minimum number of liters of air that must pass over a

    asked on December 9, 2012
  75. Math Help!

    Kayla buys a $20 phone card. She is charged $0.15 per minute for long distanced calls. What equation gives the value (v) left on her card after she makes (t) minutes of long distance calls.

    asked on December 6, 2012
  76. reading

    hello im diong meaning match for an example inter + scene = interview counter + segment of a whole = ???

    asked on November 6, 2012
  77. social studies

    GIFT OF THE NILE 1. What would be the main mineral resource in lower Egypt?

    asked on October 14, 2012
  78. Math

    Auppose f is even but g is an arbitrary function (possibly neither even nor odd). (a) Is f o g still even? Show why or why not. (b) Is g o f even? Show why or why not.

    asked on October 4, 2012
  79. Religion

    Hello I am trying to find a site that will play audio reading of the bible. Book of Roman in its entirety? Is this possible?

    asked on May 15, 2012
  80. MATH 6TH

    THANK YOU MS. SUE HOW ABOUT #3 - PATTERNS DIVIDED WITH DECIMALS TENTHS, HUNDRETHS....

    asked on April 26, 2012
  81. MATH 6th

    1. Is there a website that can show me how to divide decimals by10-1000? 2. Divide decimals by whole numbers? 3. Patterns with tenths, hundredths and thousandths? PLEASE HELPL ME - THANK YOU IN ADVANCE. JUST SOME SAMLES OF ALL THE ABOVE

    asked on April 26, 2012
  82. science 6th grade

    do you know where I can find in abc order all of the STATES AND THEIR CAPITALS MAYBE A LINK. THIS IS FOR MY HOMEWORK TOMORROW.....THANK YOU IN ADVANCE FOR YOUR HELP!

    asked on April 22, 2012
  83. maths

    John is 3 times as old as Susan now. In 4 years time John will be 18 years older than Susan. Find John's age and Susan;s age now.

    asked on March 22, 2012
  84. math

    Susie drew a triangle with angles that measure 47, 43. and 90 degrees. What type of triangle did she draw?

    asked on February 22, 2012
  85. chemistry

    looking at all the averages on the front board, give at least three possible reasons for the values being different. classroom values from board: 10, 15, 25, 18, 39, 45

    asked on January 22, 2012
  86. math

    What 42 out of 16 simpfly

    asked on January 12, 2012
  87. math

    find the product or quotient . write the strategy you used . write model,break apart, multiplication table ,inverse operations pattern ,or doubles 56 divided by 7

    asked on September 19, 2011
  88. gcse geography

    i need to do a case study on France and i have several questions i need help with.Do you know of any good websites that can help me. Some of the questions i need to answer and are struggling with are:- *Which other capital cities/major population centres

    asked on September 17, 2011
  89. chemistry

    Which of the following would be the best technique to use in order to separate a soluble solid from a liquid?

    asked on June 21, 2011
  90. science

    a person has a hert attack and her condition is stablised but due to inflamatiom in the lung she could not breath so a machine helps her to breath and now the lung inflamation is healing .Will she be able to breath on her own once the machine is cut off?

    asked on May 30, 2011
  91. science

    what must be the genotypes of their children?

    asked on March 27, 2011
  92. math

    Jerry has 76 quarter.How much dollars do he has? I said the answer is either $19.00 or $76.25 which one is correct Thank you

    asked on March 18, 2011
  93. math

    the exact position of the squer root of 50 on a number line

    asked on February 15, 2011
  94. math

    I round to nearest ten these problems: 72 x 4 =290 15 x 6 =90 are these correct?

    asked on February 8, 2011
  95. math

    What is the largest three digit number you can write without using a 9 in the hundreds place or ones place, or an 8 in the tens place?

    asked on February 2, 2011
  96. math

    1/3 of 18

    asked on January 20, 2011
  97. physics

    One of the Echo satellites consisted of an inflated spherical aluminum balloon 30 m in diameter and of mass 20 kg. Suppose a meteor having a mass of 9.2 kg passes within 4.4 m of the surface of the satellite. What is the gravitational force on the meteor

    asked on November 27, 2010
  98. physics

    You weigh 516 N at sidewalk level outside the World Trade Center in New York City. Suppose that you ride from this level to the top of one of its 410 m towers. Ignoring Earth's rotation, how much less would you weigh there (because you are slightly farther

    asked on November 26, 2010
  99. physics

    One of the Echo satellites consisted of an inflated spherical aluminum balloon 30 m in diameter and of mass 20 kg. Suppose a meteor having a mass of 9.2 kg passes within 4.4 m of the surface of the satellite. What is the gravitational force on the meteor

    asked on November 26, 2010
  100. Physics

    Computer-controlled display screens provide drivers in the Indianapolis 500 with a variety of information about how their cars are performing. For instance, as a car is going through a turn, a speed of 201 mi/h (89.847 m/s) and a centripetal acceleration

    asked on November 25, 2010

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