sylvia

Most popular questions and responses by sylvia
  1. Algebra

    1.A motorcycle has a reserved fuel of 0.5 liter which can be used if it's 3-liter fuel tank is about to be emptied. The motorcycle consumes at most 0.5 liter fuel for every 20 km of travel. a. What mathematical statement represents the amount of fuel that

    asked on November 23, 2015
  2. Chemistry

    2Al + 3CuSO4 --> + 3Cu + Al2(SO4)3 * copper(II) sulphate is a hydrate 1.2g of CuSo4 50mL of water 1.0 g of aluminum foil What is the limiting reactant?

    asked on February 15, 2011
  3. Algebra

    On a summer day in Cape Cod, the depth of the water at a dock was 4ft at low tide at 2:00 AM. At high tide 5 hours later, the heist of the water at the dock rose to 14 feet. Write a cosine function to model the height of the water at the dock x hours after

    asked on May 8, 2017
  4. Chemistry

    If you place an aqueous solutions of CuBr2 (which is then Cu(H2O)4 2+) with solid KBr added to it in a hot water bath what do you observe and why?

    asked on June 21, 2009
  5. Chemistry

    How much Na2CO3 would you weigh to prepare M/20 Na2CO3 solution in 100cm3 volumetric flask?

    asked on June 28, 2017
  6. math

    EF is a median of isosceles trapezoid ABCD. Find EF if AB is equal to 3 inches, and CD is equal to 11 inches.

    asked on May 25, 2010
  7. Physics

    A 0.12-kg ball traveling with a speed of 40 m/s is brought to rest in a catcher's mitt. What is the size of the impulse exerted by the mitt on the ball?

    asked on December 28, 2010
  8. Medcal Billing an Coding

    I am stuck on this one coding scenario I'm hoping you can help me. I have gotten CPT code 90947 or 90945 but I am unsure which is the right one? I need a CPT code for an inpatient hospital scenario, Dialysis Progress Note. The patient was seen during CAPD

    asked on September 3, 2015
  9. Hamilton

    Julia studied math 3 1/3 hours during the 4 days before her last test. what was the average amount of time she studied each day

    asked on March 9, 2013
  10. chemistry

    when aluminum metal reacts with iron (III) oxide to form aluminum oxide and iron metal, 429.6 kJ of heat are given off for each mole of aluminum metal consumed, under constant pressure and standard conditions. What is the correct value for the standard

    asked on December 2, 2008
  11. Physics

    A bowling ball has a mass of 6 kg and a speed of 1.5m/s. A baseball has a mass of 0.12 kg and a speed of 40 m/s. Which ball has the larger momentum?

    asked on December 28, 2010
  12. chemistry

    In the experiment, a hydrate is heated to form an anhydrate. The masses of the before and after are measured and the percent of the water in the hydrate is calculated. If some of the hydrate spatters out of the crucible and isnt noticed, how will this

    asked on October 12, 2008
  13. Math calculus by rotation

    Calculate the volume obtained by rotating around y= -3 the area between the curves x= y^2 -4 x+y+2=0 I did the Volume as an integral between (-4, 0) of (x^2 +x - 12 - 6(x+4) ^1/2) dx The method I used is seeing the solid as a washer(? Can someone help me

    asked on December 3, 2018
  14. Chemisty

    Carbon dioxide is usually formed when gasoline is burned. If 30.0 L of Co2 is produced at a temperature of 1.00 X 103 C and allowed to reach room temperature (25.0 C) without any pressure change, what is the new volume of the carbon dioxide?

    asked on September 7, 2011
  15. math

    The United Nation declared that the world's six-billionth inhabitant was born on October 12, 1999 in Bosnia. Don't discuss what is not said. Discuss what is said. what is wrong with this statement according to what is allowed in statistics?

    asked on August 25, 2010
  16. Chemistry

    Calculate the weight of anhydrous Na2CO3 necessary to prepare M/20 solution in 100cm3 volumetric flask

    asked on June 28, 2017
  17. algebra

    1. The geometric mean between the first two terms in a geometric sequence is 32. If the third term is 4, find the first term. 2. Insert a geometric mean between k and 1/k. 3. If 2 and 3 are two geometric means between m and n, fond the values of m and n.

    asked on July 16, 2016
  18. Algebra

    I hope I can explain this. I can't draw the shape here, but it is a triangular prism that looks like a wedge of cheese. The height is 20 cm and the three sides are 13, 37, and 40 cm. There is also a line drawn from the corner of the two sides that are 13

    asked on February 27, 2013
  19. MATH

    If I put $300 in an account that earns 5.5%, how much will there be in the account at the end of 21 years?

    asked on February 7, 2015
  20. 7th grade

    if a perimeter of a garden is 82 feet. the length is 5 more than twice the width.what is th width of the garden?

    asked on August 30, 2010
  21. algebra

    the sum of 4 times a number and -2 is equal to the sum of 5 times the number and -2. find the number.

    asked on March 20, 2019
  22. physics

    1)The difference of potential between terminals of a battery is 6V. How much work is done when a series of negative charges totaling 0.5 C are moved from one terminal to another? 2) Two parallel metal plates have opposite charges and a difference of

    asked on February 27, 2010
  23. Chemistry

    If you add Na2CO3 and AgNO3 together in a test tube what exactly would you observe and what would be the equation for the equilibrium system? If you then add HNO3 to the solution what exactly would you observe and what would be the equation for that

    asked on June 20, 2009
  24. American Constitutional Law

    In view of canons of construction and interpretation, name and explain three necessary elements that you must consider before drafting language to amend the U.S. Constitution. Where do I find the three necessary elements?

    asked on April 9, 2019
  25. Statistics

    (GRAPH) Sketch a normal curve that has a mean of 15 and a standard deviation of 4. On the same x-axis, sketch another normal curve that has a mean of 25 and a standard deviation of 4. Describe the two normal curves.

    asked on March 3, 2018
  26. epcc

    How many moles of aluminum ions are present in 0.80 mole of Al2(SO4)3

    asked on October 24, 2015
  27. ALGEBRA

    In a water refilling stationthe time that a pipe takes to fill a tank is 10 minutes more than the time that another pipe takes to fill the same tank. If the two . If the two pipes are open at the same time, they can fill the tank in 12 minutes. How many

    asked on July 21, 2015
  28. statistics

    In this question, use Excel functions rather than Normal distribution tables. The number of new cars sold by "Ma's New Car Factory" in a financial year can be approximated by a normal distribution with a mean of 125,000 cars and a standard deviation of

    asked on September 11, 2014
  29. Chemistry

    A student prepared 200mL of 0.01M solution of calcium phosphate, Can(PO4)2. What is the concentration of calcium in parts per million? Relative atomic masses Can =40, P =31, O =16

    asked on April 9, 2018
  30. Statistics

    Find the area under the normal curve in each of the following cases. 1. Between z = 0 and z = 1.63 2. Between z = 1.56 and = 2.51 3. Between z = -0.76 and z =1.35 4. Between z= -0.26 and z = -1.76 5. To the left of z = 2.35 6 To the right of z = -1.31 7.

    asked on March 3, 2018
  31. Algebra - area

    I hope I can explain this. I can't draw the shape here, but it is a triangular prism that looks like a wedge of cheese. The height is 20 cm and the three sides are 13, 37, and 40 cm. There is also a line drawn from the corner of the two sides that are 13

    asked on February 27, 2013
  32. calculus

    A rectangle is to be inscribed under the arch of the curve y=4cos(.5x) from x=-pi to x=pi. What are the dimensions of the rectanlge with the largest area and what is the largest area? please explain.

    asked on November 15, 2008
  33. math

    Owen and Ethan have $175 together. How much money does each of them have if Ethan has $33 more than Owen?

    asked on April 8, 2018
  34. Accounting

    Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

    asked on October 13, 2010
  35. chemistry 101

    if you had 14 moles of octane how many moles of carbon dioxide would you get?

    asked on April 28, 2011
  36. physics

    What is the acceleration of the system if both blocks have a mass of 5.0 kg, and the coefficient of kinetic friction is 0.11? [___/4] (b) Determine the tension in the rope.

    asked on March 5, 2010
  37. analytic geometry

    1. The orbit of the earth is an ellipse with the sun at a focus, the semi-major axes 93 million miles and the eccentricity is 1/60. Find the greatest and least distance of the earth from the sun. 2. A battle shipping is sailing at a straight line towards

    asked on January 30, 2016
  38. analytic geometry

    1. Given the parabola defined by y^2 = -12x, find the coordinates of the focus, the length of the latus rectum and the coordinates of its endpoints. Find also the equation of the dielectric. Sketch the graph. 2. Find the eccentricity of an ellipse when the

    asked on January 28, 2016
  39. ALGEBRA

    A car travels 20 kph faster than a truck. The car covers 350 km in two hours less than the time it takes the truck to travel the same distance. What is the speed of the car? How about the truck?

    asked on July 22, 2015
  40. Math

    Sue buys 8.5 pounds of chicken to make tacos. She uses 0.3 pound of chicken for each taco. How many tacos can sue make?

    asked on November 21, 2013
  41. physics

    A particle travels to the right at a constant rate of 6.1 m/s. It suddenly is given a vertical acceleration of 1.8 m/s 2 for 4.5 s. What is its direction of travel after the acceleration with respect to the horizontal? Answer between −180◦ and +180◦

    asked on October 5, 2013
  42. algebra

    If my equation that I wrote does it matter how it is written. Does it matter if I write it' $200+$50h=c or c=$200+$50h or c=$50h+200

    asked on March 15, 2011
  43. Accounting

    Nafari Company's sales budget has the following unit sales projection for each quarter of the calendar year 2011. January -March 1,080,000 April-June 1,360,000 July-September 980,000 October-December 1,100,000 Total 4,520,000 Sales for the first quarter of

    asked on October 13, 2010
  44. physics

    using the strap at an angle of 31° above the horizontal, a Grade 12 Physics student, tired from studying, is dragging his 15 kg school bag across the floor at a constant velocity. (a) If the force of tension in the strap is 51 N, what is the normal force

    asked on March 5, 2010
  45. chem lab

    In a pottasium permanganate and oxalic acid titration..why do we add sulfuric acid to the oxalic acid solution and then boil it before titrating??

    asked on January 12, 2009
  46. intermediate algebra

    1. Two numbers differ by 8. If one-half the larger is added to one-fourth the smaller, the resulting sum is 22.Find the numbers. 2. Ten years ago a man was three times as old as his son. In 12 more years the son is three-fifths as old as his father. How

    asked on October 31, 2016
  47. Algebra

    For each of the following expressions, determine all of the values of k that allow the trinomial to be factored over the integers. A) x^2 + kx - 19 B) 25x^2 + kx + 49 C) x^2 + kx + 8

    asked on May 25, 2016
  48. analytic geometry

    1. Given the parabola defined by y^2 =-12x, find the coordinates of the focus,the length of the latus rectum and the coordinates of its endpoints.Find also the equation of the directrix. Sketch the curve. 2. Find the eccentricity of an ellipse when the

    asked on January 28, 2016
  49. Math

    A speed boat travels at a rate of 20 km per hour in still water. It travels 55 km upstream the same time it travels 90 km downstream. What is the rate of current?

    asked on September 15, 2015
  50. precalulas

    solve each equation over the given interval 2x=cosx for all values of x

    asked on November 27, 2011
  51. American History

    Create a timeline tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the Mexican-American War (1846-1848).

    asked on March 31, 2011
  52. calculus

    find an equation for a line that is normal to the graph y=e^x*x and goes through the origin.

    asked on December 1, 2008
  53. Statistics

    A. In a given normal distribution, the sample mean is 75 and the sample standard deviation is 4. Find the corresponding standard score of the following values: 1. 69 2. 85 3. 70 4. 65 B. In a given normal distribution, the population standard deviation is

    asked on March 3, 2018
  54. Math

    1. Make a sketch of 5 rectangular open boxes such that a. the height of the boxes are the same, b. The boxes can hold 249cm^3, 504 cm^3,810 cm^3 and 468 cm^3 respectively. 2. Solve each quadratic equation by completing the square to determine the

    asked on June 21, 2017
  55. intermediate algebra

    Mr. Lakandula would like to increase his production of milkfish due to its high demand in the market. He is thinking of making a larger fishpond in his 8000 sq. m lot near a river. Help Mr. Lakandulaby making a sketch plan of the fishpond to be made. Out

    asked on July 6, 2016
  56. World History

    In what ways did Islam create the first “world civilization?” How was Islam changed by contact with indigenous faiths in Africa & Asia? How did Byzantium preserve & perpetuate the traditions of Rome? What roles did commerce play in the transmission of

    asked on April 13, 2013
  57. algebra

    For me to solve the system of equations for the total cost of lawn care using the tequnique substitution am I right to say: c=$200+$50h c=$300+$25h would be c=$250 c=$325

    asked on March 15, 2011
  58. algebra

    I have a problem with break even analysis? the question is I'm trying to find the cost between 2 businesses to care for my lawn. The one company has an initial fee of $200+$50an hour for labor cost and the second company has an initial cost of $300+$25an

    asked on March 15, 2011
  59. ECONOMICS

    WHAT IS HORIZONTAL INTERGRATION

    asked on November 9, 2010
  60. economics

    wHAT IS VERTICAL INTERGRATION

    asked on November 9, 2010
  61. Science

    how many atoms of carbon in 18 grams of C3H8o

    asked on March 28, 2011
  62. accounting

    I have answer a hypothetical situation question as to what advice I would give to a business owner whose business in growing on how to make her accounting work more efficient. She manually enters in cash sales daily, makes purchase orders over the phone,

    asked on September 26, 2010
  63. 7th grade

    how many diffent arts are there in the whole world

    asked on February 4, 2010
  64. American History

    Create a timeline tracking the major themes/paradigm shifts in American History from the Columbus's voyages through the Mexican-American War (1846-1848)

    asked on March 31, 2011
  65. calculus

    the equation cosx=x has a solution in what interval?...the answer is given as [0,pi/2] can someone please explain why?? thnks

    asked on November 13, 2008
  66. english

    help unscramble lesfat

    asked on September 21, 2008
  67. Physics

    A projectile is kicked horizontally off a tall building with an initial velocity of 13.7 m/s. The projectile lands 56.2 m away from the base of the building. How long is the projectile in the air? How tall is the building? What is the velocity of the

    asked on September 27, 2017
  68. math

    If a basketball player missed 41 free throws out of 100, what fraction and what percentage of free throws did the player make?

    asked on February 7, 2017
  69. Algebra

    1. A man completing a 40km trip finds that by travelling one more km per hour, he could have made the journey in 2 hours less time. At what speed did he actually travel? 2. One pipe alone can fill a tub in 6 minutes less than it takes a second pipe alo e

    asked on August 17, 2016
  70. analytic geometry

    1. Find the longest and shortest distance from (10, 7) to the circle x^2 + y^2-4x-2y-20=0 2. From the start, a man runs 4km towards north, 3 km towards east and takes a rest. Draw the line from starring point to resting point and line from resting point to

    asked on January 29, 2016
  71. analytic geometry

    1. Find the equation of the asymptotic of the hyperbole x^2/9 - y^2/ 4 = 1. 2. Given the equation of a function 2x^2 + 5y^2 - 16x + 20y + 108 =0, translate the original so that the New equation will have no first degree terms. 2. Find the radius and the

    asked on January 28, 2016
  72. Medical Billing and Coding

    I need a CPT code for an outpatient hospital scenario, Radiology Report. Examination: MRI of brain with contrast. Clinical symptoms: Slurred speech, right arm weakness. Magnetic resonance examination of the brain was performed prior to contrast utilizing

    asked on September 3, 2015
  73. Physical Science

    Beginning at rest, you accelerate at a rate of 2.5 m/s^2 for 12 seconds. What is your final velocity?

    asked on October 22, 2014
  74. History

    Can I study Archeology while I did mathematical Literacy at school ?

    asked on February 20, 2014
  75. United States Constition

    Details: Part I: Principles of the Constitution Create a chart or a matrix outlining the following primary principles of the Constitution: 1. Self-Government 2. Separation of Powers 3. Checks and Balances Write an analysis of 250-500 words on the

    asked on February 23, 2013
  76. POS-301-0101 arizona government

    Using 750-1,000 words, create a chronological narrative delineating the significance of the documents/events listed below that impacted the evolution of the United States Constitution. In your narrative, discuss each of the documents and/or events listed

    asked on February 12, 2013
  77. geometry

    Do the following playing cards have symmetry: 4 of Spades; 9 of Clubs; 7 of Diamonds; 5 of Hearts? If so, explain the type of symmetry.

    asked on September 12, 2012
  78. American History

    I need asap homework help

    asked on April 14, 2011
  79. Physics

    Which of these types of motors or engines are heat engines? a. an automobile engine b. an electric motor c. a steam turbine

    asked on December 28, 2010
  80. Physics

    A 0.4-kg ball has a velocity of 20 m/s. a. What is the kinetic energy of the ball? b. How much work was required to lift the box to this position?

    asked on December 28, 2010
  81. staistics/ math

    A statistician needs to survey a sample of 50 people that is representative of voters in his community. He prepared a list of phone numbers of 50 randomly selected, expected voters. Next morning, he came to work at 8:00 and began to make calls. By 11:00

    asked on August 25, 2010
  82. Intro to LAN technologies

    58. You have been contracted to build a network for a multimedia development firm that currently uses a 10-Mbps Ethernet network. The company requires a high-bandwidth network for the multimedia team, which constantly views and manipulates large files

    asked on March 14, 2010
  83. algebra

    need help with fractions

    asked on October 18, 2009
  84. com 220

    identify example of bias fallacies and specific rhetorical devices in the speech how did the speacher address arguments and counter arguments ? were the speacher's argument effective explain your answers.

    asked on September 28, 2008
  85. Health

    Is giardiasis transmitted through direct and indirect contact with infected fecal material or by touching the moist lining of the eyes and nose? Isn't it transmitted through direct and indirect contact with infected fecal matter?

    asked on April 15, 2007
  86. Geography

    Calculate the distance between town a latitude (30n) and town b on(latitude 70)

    asked on October 24, 2017
  87. Chemistry

    How to identify anions

    asked on June 29, 2017
  88. Math

    Find the roots using quadratic formula 1. X^2+7x =4 2. 4x^2 - 4x +1=0

    asked on June 23, 2017
  89. cpcc

    a small plane is traveling due south a t a velocity of 90 m/s. It suddenly encounters a tailwind of 27 m/s heading due south. what is The "air velocity" of the plan stays the same....but what is the resultant velocity (aka..."ground velocity") of the

    asked on June 5, 2017
  90. analytic geometry

    Determine the acute angle between the lines 3x - 7y = 21 and 5x + 3y = 15.

    asked on January 27, 2016
  91. physics

    Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction

    asked on February 26, 2015
  92. Math

    Sara cycled 11 miles from home to ranch in 1 1/2 hour. How many miles did she cycle per hour?

    asked on September 24, 2014
  93. Cult Anthro

    Running amok (murderous raging) in Malaysian culture susto,spirit attack in Latin America,and fright in Carribean are example of what

    asked on July 1, 2013
  94. life orientation

    in 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community

    asked on April 23, 2013
  95. Algebra

    Input 16 output 2 input 24 output 4 input 40 output 6 input 52 output 8 find y if x is given. X is input

    asked on April 23, 2013
  96. Algebra

    Input 16 output 2 input 24 output 4 input 40 output 6 input 52 output 8 find y if x is given. X is input

    asked on April 23, 2013
  97. Algebra - volume

    I can't draw the shape here, but the picture is of a 3-sided pyramid. One side of the base is 10", another side of the base is 3", and the height is 15". I need to find the volume and round to the nearest whole number.

    asked on February 27, 2013
  98. U.S. constitution

    Using 750-1,000 words, create a chronological narrative delineating the significance of the documents/events listed below that impacted the evolution of the United States Constitution. In your narrative, discuss each of the documents and/or events listed

    asked on February 20, 2013
  99. Math

    Given the function f(x)=5x(x-1)(x+7) FInd the largest non-negative x-value for which f(x)=0

    asked on January 14, 2013
  100. math

    Now, think of a set of domain and range from your own life. Write a paragraph on whether you think your particular domain and range is or is not a function and why. I need a life a example? is it a function?

    asked on January 18, 2012

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