Posts by Sandra

Total # Posts: 1,164

  1. Science

    Are there instances when the scientific method is used without the possibility of conducting experiments?
  2. Chemistry lab

    Calculate the conc of the solution in g/dm^3
  3. Chemistry lab

    A solution contains 2.65g of anhydrous Na2O3 in 200cm³ of the solution. Calculate the concentration of the solution in g/dm³ given that (Na2CO3 = 106)
  4. Chemistry lab

    List 10 equipment use in the chemistry lab and their uses
  5. Math

    Design a simulation to determine the probability of having exactly 2 boys and a family of five children
  6. Math

    Two out of every 7 7th grade students are in the chorus. Estimate the probability of randomly selecting 3 7th grade students and having at least one student be in the chorus. Which of the following tools could be used to simulate this situation? A bag of marbles A coin A 6 ...
  7. Math

    Using algebraic expression no arithmetic symbols. Twice the quotient of a number divided by 5.
  8. Alegebra

    To help raise funding for homeless’ Thanksgiving Dinner, Christina and her friends sell chocolate bars during lunch time. They sold 2/5 of the total on day one, and sold 1/2 of the leftover on day two. On day three, they sold 1/3 less than sales on day one, and are left ...
  9. physics

    A bullet of mass 6.00 g is fired horizontally into a wooden block of mass 1.21 kg resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.210. The bullet remains embedded in the block, which is observed to slide a distance 0.260 m ...
  10. Math

    Dave takes out a 24-year mortgage of 290000 dollars for his new house. Dave gets an interest rate of 14.4 percent compounded monthly. He agrees to make equal monthly payments, the first coming in one month. After making the 68th payment, Dave wants to buy a boat, so he wants ...
  11. english 4

    what's the difference between beowulf and the narrator
  12. Algebra

    One-third a number (x)added to one-half the number equals twelve less than the number
  13. math

    A chemist wants to mix two kinds of glycerins for the manufacture of a soap. The glycerin from supplier A cost $1 million per ton and the glycerin from supplier B costs $1.5 million per ton. The chemist is obligated to buy no more than twice as much glycerin from supplier B as...
  14. science

    where father seat in seesaw.tomake balance
  15. math

    17.   Lavina wants to buy a rocking chair for $160. She'll pay 10% down and pay the rest in six monthly installments. What will be the amount of each monthly payment?        A. $27   B. $24   C. $26   D. $16
  16. Social studies

    So is it 2?
  17. Social studies

    A small, but wealthy and powerful,church community is seeking to buy the only television station in a 200 mile radius. Based on the point of view presented,what is the best argument against this sale? 1) tax money should not be used to support the church 2)The viewing public ...
  18. M240 Help please

    Solve the following system of equations using matrices. Use Gaussian elimination with back substitution or Gauss-Jordan elimination. a. 3x1 + 5x2 - 8x3 + 5x4 = -8 b. x1 + 2x2 - 3x3 + x4 = -7 c. 2x1 + 3x2 - 7x3 + 3x4 = -11 d. 4x1 + 8x2 - 10x3+ 7x4 = -10 my answer = B
  19. MA240 Please help

    An artifact originally had 16 grams of carbon-14 present. The decay model A = 16e -0.000121t describes the amount of carbon-14 present after t years. How many grams of carbon-14 will be present in 5715 years? A. Approximately 7 grams B. Approximately 8 grams C. Approximately ...
  20. m240

    Determine the degree and the leading coefficient of the polynomial function f(x) = -2x3 (x - 1)(x + 5). A. 5; -2 B. 7; -4 C. 2; -5 D. 1; -9 My answer is A is this correct.
  21. m240

    All rational functions can be expressed as f(x) = p(x)/q(x), where p and q are __________ functions and q(x) ? 0. A. horizontal asymptotes B. polynomial C. vertical asymptotes D. slant asymptotes My answer is B is this correct.
  22. Writing

    While conducting these difficult tests, the state driving inspectors often seemed stern and unyielding. Which of the following is the best way to write this sentence? 1) tests, the state driving inspectors 2) tests the state driving inspectors 3) tests. The state driving ...
  23. Writing

    OK, thank you!
  24. Writing

    With time and public support, they should be successful. What correction should be made to this sentence? 1) change the spelling of support to suport 2) replace they with one 3) change should be to should have been 4) change the spelling of successful to sucessful 5) no ...
  25. writing

    We also prepared for the test by studying the driver's booklet, memorizing rules, and to learn road signs. What correction should be made to this sentence? 1) change prepared to prepare 2) change studying to study 3) change driver's to driver 4) remove the comma after ...
  26. Writing

    So the answer should be the 5?
  27. Writing

    With time and public support, they should be successful. What correction should be made to this sentence? 1) change the spelling of support to suport 2) replace they with one 3) change should be to should have been 4) change the spelling of successful to sucessful 5) no ...
  28. writing

    In the past, the United Stated Public Health Service and state and local health departments dominate the fields. What correction should be made to this sentence? 1) insert comma after Service 2) change state and local to State and Local 3) insert comma after departments 4) ...
  29. writing

    What else can they do when repaired walls separate from beams or restoring sockets carry no electricity What correction should be made to this sentence? 1) Insert a comma after walls 2) change the spelling of separate to seperate 3) Change restoring to restored 4) change the ...
  30. Writiing Skills

    so the answer is B
  31. Writiing Skills

    As a result, although the swimming or boating may be great, you will have to get up at daybreak to beat the crowds. If rewrote the sentence As a result, although the swimming or boating may be great, the next word should be a) since b) but c) and d) if e) for I think its C, is...
  32. math

    if one sixth of a number is added to one eighth of the same number, the result is 35. find the number?
  33. Math

    Brandy has a card collection with 64 basketball cards 32 football cards and 20 for baseball cards he wants to arrange the cards and equal piles with only one type of card in each pile how many cards can he put in each pile?
  34. Chem

    i dont know how to get this answer
  35. Math

    Simplify the follow)ing to the simplest form (tan(x) +cot(x))/ (tan(x)*cot(x))
  36. Math

    (1+tan(x))* (1+cot(-x))
  37. Math

    Solve the Identity cot (x)/ (csc(x)-1)= (csc(x)+1)/cot (x)
  38. maths

    If an event A.implies obtaining prime number of an event B.implies obtaining an odd number in a single throw of a dice. Find the probability of event A or B.
  39. math

    if 13 times a number x is added to twice its square.the result is 84.find x
  40. biology

  41. Math help please??!

    Which answer describes the transformation of g(x)=log4(x?2)+4 from the parent function f(x)=log4x? It is the graph of f(x) shifted 2 units right and 4 units up. It is the graph of f(x) shifted 2 units left and 4 units down. It is the graph of f(x) shifted 4 units left and 2 ...
  42. Politics

    Two examples of how accountability is ensured in U.S. Bureaucratic Agencies. What does it mean by accountability
  43. american government

    true or false: the most important source of political values in the united states is probably the family
  44. Math

    The women's world record for the fastest half marathon is one hour six minutes and 25 seconds how much faster is this then the women's world record for the fastest marathon from exercise 4
  45. algebra 1

    Which type of function is represented by the table of values below? x y 1 4 2 16 3 64 4 256 5 1,024
  46. Physical science

    A piece of metal has a mass 85 cg and a volume of 450L. What is the density g/cm cubed? What would be the mass of 300 cm cubed of this metal? What would be the volume of 200 ounces of this metal?
  47. math

    a small kite starts at 7 meters off the ground and rises at 2.5 meters per second. a large kite starts at 12 meters off the ground and rises at 1.5 meters per second. when are the kites at the same height?
  48. Language Arts Help

    The aunt SUPPRESSED a gasp of admiration. What is the principal part of SUPPRESSED? -present -present participle -past ** -past participle
  49. physics

    A remote controlled car. My 11 year old grandson, Danny, got a remote controlled car for his birthday. His older brother, Jay, has a set of physics tools, including a sonic ranger. Jay is a computer jockey and has figured out how to make the sonic ranger program show any ...
  50. finance management

    You are going to open a business making custom cabinets. You can sell each cabinet for $80. It takes a cabinetmaker approximately 45 minutes to make one cabinet. Each cabinetmaker works an 8-hour day earning $18 per hour. Each cabinet uses $25 in raw materials. You usually ...
  51. finance management

    Wanda wants to open a health-food store. Her monthly expenses are rent $3,500, utilities of $1,000, insurance of $500, and payroll of $4,250. She estimates that her cost of goods is approximately 65 percent of sales. Wanda would like to make $4,000 a month for herself. a. What...
  52. Calculus AB

    If csc x = -2.5, what is the value of x?
  53. Chemistry

    the flame stays the same.
  54. Math Makes Sense Grade 3

    Colour the spinner red and blue. Make it so that when the pointer is spun, the probability of landing on blue is 1 in 4. What is the probability of landing on red?
  55. Math Makes Sense Grade 3

    Make a spinner with 3 colours. I chose green, red and blue. Colour it so that when the pointer is spun, the probability of landing on the green is 2 in 4. What is the probability of landing on either of the other 2 colours.
  56. Financial Math

    6 character computer password is made up of 4 numbers followed by 2 letters. How many different passwords are possible?
  57. physics

    Find the number of moles in 2.00 L of gas at 35.0°C and under 7.41×107 N/m2 of pressure. Select one: a. 0.051 moles b. 51 ×105 moles c. 58 moles d. 5.8 moles
  58. Calculus

    Thank you so much Sir!
  59. Calculus

    A searchlight revolving once each minute is located at a distance of 1/4 mile from a straight beach. How fast is the light moving along the beach when the beam makes an angle of 60° with the shore line?
  60. Calculus

    A building is to be braced by means of a beam which must pass over a wall. If the wall is 3 3/8 feet high and stands 8 feet from the building, find the shortest beam that can be used.
  61. Math

    7 boys share 5 chocolate bars equally how much do the get?
  62. Calculus

    The answer is 2/e and I don't even have a clue on how to solve it.
  63. Calculus

    Find the area of the largest rectangle cut from the first quadrant by a line tangent to the curve y=e^(-x^2)
  64. st josephs

    for the next 4 years you will get the following cash flow. $420 $520 $750 $540. Assume that the interest is 5.5% how much money will you have in 4 years
  65. Calculus

    A light hangs 15 ft. directly above a straight walk on which a man 6 ft. tall is walking. How fast is the end of the man's shadow travelling when he is walking away from the light at a rate of 3 miles per hour?
  66. Calculus

    Why did it become 5+5t?
  67. Calculus

    One ship is sailing south at a rate of 5 knots, and another is sailing east at a rate of 10 knots. At 2 P.M. the second ship was at the place occupied by the first ship one hour before. At what time does the distance between the ships not changing?
  68. Life orientation grade 12

    fraud and corruption
  69. Calculus

    Thank you so much!
  70. Calculus

    Find the area of the largest rectangle having one side on the x-axis and inscribed in a triangle formed by the lines y=x, y=0 and 3x+y=20.
  71. Calculus

    Thank You
  72. Calculus

    Find the dimensions of the largest right circular cylinder that can be inscribed in a sphere of radius 6 inches.
  73. life orientation

    how the fraud and corruption affected the offende's career?ke kgopela go kopa nyana gyz
  74. math

    If a short quiz consist of 10 True False questions, then how many different ways are there to answer the 10 questions? Assume each question is randomly answered.
  75. Algebra

    Plane B travels 1000 km at a speed 50 km Are you sure u copied the sentence correct cuz the unit of speed is km/hr (m/s) in SI
  76. math

    x-y=33 3x-6y=18 By solving system of equations X=-60 y=-27
  77. algebra

    You pot the dots on the graph and you connect it to form a line since its a linear equation y=-5/6x-18/3
  78. science

    Isn't there initial speed
  79. Algebra 2

    Thank you
  80. Algebra 2

    Parabolas - you are my last resort: Find a quadratic function in standard form for each set of points. (0, –4), (1, 0), (2, 2) Can't print answer choices
  81. physics

    A charged capacitor (AB) carries on its plate A a charge Q=-1.2mC a) What is the charge carried by plate B. b) Is the voltage U (AB)=V (A)-V (B) positive or negative. c) The plates A and B are connected to the terminals of a resistance R: the capacitor gets discharged. What ...
  82. physics

    A charged capacitor AB carries on its plate A a charge Q=-1.2mC What is the charge carried by plate B. Is the voltage U(AB)=V(A)-V(B) positive or negative, The plates A and B are connected to the terminals of a resistance R: the capacitor gets discharged. What are the charge ...
  83. physics

    A capacitor is formed of two identical coaxial disks of diameter 28cm. The distance d between the disks is adjustable . Calculate the capacitance of this capacitor at d=5mm. What becomes the value of this capacitance if a glass sheet 5mm thick is inserted to fill the gap ...
  84. L.o

    the is a poor service delivery in our community and government does not meet the needs of the community

    I pull out all the stops and start my thorough speculation. In line 8, which literary device does the author use to create a musical quality? a) allusion B) free verse C) alliteration D) onomatopoeia
  86. Algebra 2

    What is the equation of the function y = (3/x) translated 4 units to the right and 5 units down?
  87. Business law

    State the issue, the law, an analysis and conclusion for the following case:- Mr Mehra was the managing director of Oakprime Ltd, the beneficiary under a letter of credit which had been issued by Trinidad National Bank (TNB) and confirmed by Standard Chartered Bank, London (...
  88. Algebra 2

    Thank you very much
  89. Algebra 2

    Simplify the sum. (w2 + 2w – 24 + ) / (w2 + w – 30) (All the other help I can find they add +8w and -5w) please help.
  90. math

    Susie wants to make some hot cereal for breakfast.The directions say to use 3 cups of water with 1 cup of cereal to make 4 servings.Susie only wants 1 serving.How much cereal should she use?
  91. Algebra 2

    Designer Dolls, Inc. found that the number N of dolls sold varies directly with their advertising budget A and inversely with the price P of each doll. The company sold 1,800 dolls when $34,000.00 was spent on advertising, and the price of a doll was set at $25.00. Determine ...
  92. Algebra 2

    How do I express a number like 27 ^2/3 as a rational number in its simplest form? 31 25.6 123 16 I keep getting 83/3 and that = 27.66
  93. accounting

    Harris Fabrics computes its predetermined overhead rate annually on the basis of direct labor-hours. At the beginning of the year, it estimated that 20,000 direct labor-hours would be required for the period? estimated level of production. The company also estimated $94,000 of...
  94. Alg 2 function operations

    Thank you, I will share with my granddaughter I am trying to help.
  95. Alg 2 function operations

    Let f(x) = -5x -4 and g(x) = 6x -7. Find f (x) + g(x) –11x + 3 x + 3 –11x – 11 x – 11
  96. Health, safety, and nutrition

    a.avoiding emotional upset during lunchtime. b.planning meals and snacks every 3-4 hours. c.serving meals that are appealing to children's sight, aroma, and taste. d.ignoring distractions such as parents coming early to pick up children during meal time.
  97. Health, safety, and nutrition

    All of the following help teachers to create an environment that enhances and supports the natural rhythms of eating EXCEPT:
  98. Algebra 2

    I believe you are correct. I can't find any help from any other source online. Double checked the input. Thanks.
  99. Algebra 2

    What is the solution of the equation? Sqrt x + 10^-9 = -7 –6 4 14 –8 You are my last hope to getting this.
  100. english

    I don't understand what the question is asking. Can someone help me understand. What can you take greater responsibility for as a student, and if you were to do so, what outcome(s) might you create?
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