Posts by Sylvia

Total # Posts: 159

  1. 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
  2. math

    Owen and Ethan have $175 together. How much money does each of them have if Ethan has $33 more than Owen?
  3. 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 2.5. Find the ...
  4. 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.
  5. 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. To the left of z = 0....
  6. Intermediate Algebra

    Solve the given equation. (Round your answers to two decimal places.) (a)     ln(x) = 4.2 + ln(7.2)
  7. Geography

    Calculate the distance between town a latitude (30n) and town b on(latitude 70)
  8. 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 projectile when it strikes...
  9. math

    Distribute the -3 to what is in the parenthesis, to make -3n-15=12. Add the 15 to both sides, making -3n=27. Divide both sides by -3, to get n=-9. Add 8 to both sides, making 54=-6t. Divide both sides by -6, to get t=-9. The goal of questions like this is to get the variable ...
  10. Chemistry

    How to identify anions
  11. Chemistry

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

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

    Find the roots using quadratic formula 1. X^2+7x =4 2. 4x^2 - 4x +1=0
  14. 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 dimensions of the materials to...
  15. 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 aircraft?
  16. 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 the day began at ...
  17. Geometry

    find the values of a and b the diagram is not to scale
  18. math

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

    Sunrise
  20. 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 old are they now? 3. A...
  21. 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 to fill the same tub. ...
  22. 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. 4. Three positive ...
  23. 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 of the given sutuation...
  24. 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
  25. 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 east at 40km/hour from...
  26. 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 finish point. Find ...
  27. 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 length of the latus ...
  28. 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 polar coordinates of ...
  29. 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 length of the latus ...
  30. analytic geometry

    Determine the acute angle between the lines 3x - 7y = 21 and 5x + 3y = 15.
  31. 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 would be left in ...
  32. epcc

    How many moles of aluminum ions are present in 0.80 mole of Al2(SO4)3
  33. 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?
  34. 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 T1-weighted sagittal ...
  35. 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 while using 1.5% ...
  36. 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?
  37. 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 minutes does each pipe ...
  38. Life orientation

    Malamulele protest
  39. physics

    Find d electrostaticforce of a q1 to other charges.express ur answer as magnitude n direction
  40. 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?
  41. Physical Science

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

    Sara cycled 11 miles from home to ranch in 1 1/2 hour. How many miles did she cycle per hour?
  43. 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 34,000 ...
  44. History

    Can I study Archeology while I did mathematical Literacy at school ?
  45. 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?
  46. 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◦ . Answer ...
  47. Cult Anthro

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

    in 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community
  49. 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
  50. 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
  51. 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 faiths in the ...
  52. German

    correct
  53. 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
  54. math

    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?
  55. 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 and 37 cm, that ...
  56. 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 and 37 cm, that ...
  57. 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.
  58. 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 effectiveness of the checks ...
  59. 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 below, then analyze ...
  60. 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 below, then analyze ...
  61. World History- (Ms. Sue).

    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 below, then analyze ...
  62. Math

    Given the function f(x)=5x(x-1)(x+7) FInd the largest non-negative x-value for which f(x)=0
  63. 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.
  64. math

    Janet took out a loan of $50,000 from Bank of America at 8 percent on March 19, 2006 which is due on July 8, 2006. Using exact interest, the amount of Janet's interest cost is: $5,018.44 $2,561.44 $5,261.44 $5,216.44 None of these
  65. 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?
  66. precalulas

    solve each equation over the given interval 2x=cosx for all values of x
  67. human services

    how success wisconsin human services in meeting the needs o its demographic group
  68. Language

    F) quit buttering up the coach
  69. Chemisty

    I just need help figure this out, no handouts please!!!
  70. 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?
  71. chemistry 101

    if you had 14 moles of octane how many moles of carbon dioxide would you get?
  72. American History

    I need asap homework help
  73. 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).
  74. 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)
  75. Science

    how many atoms of carbon in 18 grams of C3H8o
  76. algebra

    did I solve the problem correctly? c=$200+$50h c=$300+$25h is the answer c=$250 c=$325 Do all I have to do to this equation is to add them to get the total cost of labor with h=labor per hour and c=cost or do I have to solve it in a different way. I'm sorry for all the ...
  77. 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
  78. 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
  79. 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 hour for labor ...
  80. Physics

    It is easy to see a drop of water on the print of a glossy magazine but it is difficult to see it on the white area of the same page. Explain why.
  81. Math

    y + x = -8 y - x = 4 Use substitution.
  82. Chemistry

    oh wait. no. the limiting reactant is CuSO4
  83. Chemistry

    So the limiting reactant is aluminum? Thank you so much!
  84. 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?
  85. Physics

    Could a simple machine such as a lever, a pulley system or a hydraulic jack be considered a heat engine?
  86. Physics

    Which of these types of motors or engines are heat engines? a. an automobile engine b. an electric motor c. a steam turbine
  87. 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?
  88. 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?
  89. 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?
  90. economics

    explain why the marginal cost curve is equal to the supply curve for a monopoly
  91. math

    Thank you it was very helpful
  92. ECONOMICS

    WHAT IS HORIZONTAL INTERGRATION
  93. economics

    wHAT IS VERTICAL INTERGRATION
  94. 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 2012 are ...
  95. 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 2012 are ...
  96. 6th grade line segment

    Help!!!
  97. US 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). Include the following in your descriptive analysis: 1)The culturalpatterns of the Native American groups prior to ...
  98. language arts

    I need a list of verbs and one of adjectives I can use to make my story more interesting
  99. 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, but is now getting ...
  100. geometry

    what measure of A will make this quadrilateral a parallelgram? (10x-23)degrees (7x+1)degrees
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