lulu

Popular questions and responses by lulu
  1. History

    Which option accurately describes Ferdinand Magellan and his motivation for exploring the world? A.)He was a Portuguese explorer who sailed for Spain; he set out to find a better route to the Spice Islands. B.)He was an Italian explorer who sailed for King

    asked on October 5, 2018
  2. physics

    a 10-m uniform beam of weight 100N is supported by two ropes at the ends. If a 400N erson sits at 2.0 m from the left end of the beam, what is the tension in the right rope?

    asked on January 21, 2009
  3. English

    White House pets become almost as well known as their owners, what type o verb is become?

    asked on November 11, 2015
  4. Trigonometry

    Calculate the area: From a point A, proceed east for 300 m to Point B. Then travel 420 m on a bearing S35°E to point C. Then travel along a bearing of S40°W for 500 m to Point D. Then return to Point A.

    asked on July 21, 2012
  5. Math

    what is the smallest number that 54 can be multiplied by to give a perfect square?

    asked on September 15, 2016
  6. math

    A farmer with 2000 meters of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?

    asked on October 3, 2011
  7. CHEMISTRY

    calculate the number of moles of solute present in 124.0g of a solution that is 6.45% glucose by mass.

    asked on October 14, 2010
  8. calculus

    an open box is to be made from a piece of metal 16 by 30 inches by cutting out squares of equal size from the corners and bending up the sides. what size should be cut out to create a box with the greatest volume? what is the maximum volume?

    asked on November 18, 2011
  9. geometry help!! answer all questions!! please

    1) Write the translation that maps P(-4, 2) onto the point P ' (-1, -1)? 2) What are the coordinates of the reflection of the point (5,1) over the line y = x? 3) The coordinate notation for reflection over the y-axis is -?-. 4) If a translation has a

    asked on July 31, 2014
  10. English

    Teddy Roosevelt kept a pet snake. What type of noun is snake.

    asked on November 11, 2015
  11. chemistry

    What volume of a 0.550 M solution of potassium hydroxide can be made with 14.3 g of potassium hydroxide? (Ignore significant figures for this problem.)

    asked on November 29, 2014
  12. physics

    a lever is 5 m long. The distance from the fulcrum to the weight to be lifted is 1 m. If a 3000 N rock is to be lifted, how much force must be excerted on the lever?

    asked on January 21, 2009
  13. english grammar

    I am very sorry. What does the adverb very modify

    asked on December 8, 2015
  14. math

    a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles

    asked on March 28, 2011
  15. CHEMISTRY- vant hoff

    a 0.100m k2so4 solution has a freezing point of -0.43 degrees. what is the van hoff factors for this solution? kf=1.86degree/m? 0.77 3.0 1.0 2.3 i have used the equation dT=iKfm and get -2.3?

    asked on October 14, 2010
  16. Science

    A scientist crossed a white flower with a red flower.He expected some offspring to be white and others to be red.Instead,many offspring were pink.What occurred and how can you tell?

    asked on February 20, 2020
  17. Geography

    In the early 1600s, Bhutan's religious and political power was consolidated by a Tibetan A. mantra B.lama C. dzong D. stupa i am not sure if its mantras or dzong but im going more for mantras because it say some Hindus and Buddhist recite mantras for

    asked on November 28, 2019
  18. Macroeconomics

    Suppose that Paulie and Vinny each can produce ice cream or t-shirts. it shows the quantity of each good that Paulie and Vinny each can produce in one hour, respectively, if they devote all of their time and effort into making the good. paulie can make 3

    asked on September 20, 2015
  19. physics

    a book weighs 6 n. when held at rest above your head the net force on the book is?

    asked on January 21, 2009
  20. Algebra

    does anybody have the answers to the rest of the lesson 2 semester B exam (algebra 1 B unit 7 semester B exam and review) in math?

    asked on May 19, 2020
  21. geography

    Why does traditional Chinese medicine affect worldwide wildlife populations? A.Traditional Chinese medicine is against the law in China. B.China has little wildlife remaining, so it must import animal products. C.It is less expensive to obtain these animal

    asked on December 2, 2019
  22. Life orientation

    How they influence effective communication attitudes and values?

    asked on February 26, 2019
  23. geometry and trig

    If a cylinder with a 4 inch diameter and a 6 inch height holds 1 pound of oatmeal. How much oatmeal will a cylinder (similar) with a 10 inch diameter hold? Volume of 4 in-----24pi volume of 10 in----137pi I get 91 oz choiced are37,44,74, 192

    asked on May 10, 2016
  24. language arts

    1. What is the prepositional phrase in the sentence: The family drove to the store. a. the family drove b. drove to the store c. the family d. to the store *** 2. What is the appositive phrase in this sentence: My mother, Rebecca, loves to eat pumpkin pie.

    asked on May 3, 2016
  25. chemistry

    which system is under higher pressure, a column of mercury or a column of water

    asked on April 7, 2011
  26. Pre- algebra Math 6 th grade Gifted

    what is the sum of the numbers 1 to 1000? ans:500500

    asked on October 28, 2009
  27. Chemistry

    A sample consisting of 22.7 g of a nongaseous, unstable compound X is placed inside a metal cylinder with a radius of 8.0 cm, and a piston is carefully placed on the surface of the compound so that, for all practical purposes, the distance between the

    asked on January 5, 2009
  28. math

    what is 1:56:20+1:01:13+1:50:05

    asked on April 23, 2020
  29. algebra

    Could you give me an example of a linear equation with a variable on both sides of the equal sign? Please don't look one up. You don't have to give the answer to the equation. It can only have one solution.

    asked on February 15, 2020
  30. Science

    Scientists believe that the (Milankovitch cycles, tilt of the earths axis, sea levels, low temperature) explain why Earth’s (climate has, tilt of earths axis has, low temperatures have, sea levels have) fluctuated between glacial periods and interglacial

    asked on February 14, 2020
  31. world geography

    "City residents affected by health problems from the plant’s toxic emissions prompted the government, for the first time, to shut down a state-run factory. In early 2013, a state of emergency was declared in Beijing due to terrible air quality." How did

    asked on December 2, 2019
  32. math

    Suppose you want to build a rectangular sandbox where the width is 5 feet less than the length and the diagonal is 5 feet longer than the length. What are the dimensions of the sandbox?

    asked on April 3, 2019
  33. physics

    a drum holds 90 kg of water or 60 kg of gasoline. determine (a) the relative density of gasoline (b) the density of gasoline (c) the capacity of drum.

    asked on November 16, 2017
  34. Math

    a bag contains 7 green marbles, 9 red marbles, 10 orange marbles, 5 brown marbles, and 10 blue marbles. you choose a marble, replace it, and choose again. what is P(read, then blue)? A. 77/164 B. 19/41 C. 90/1681 D. 45/41••

    asked on May 11, 2017
  35. Math

    A spinner is divided into 10 equal sections numbered from 1 to 10. You spin the spinner once. Find P(not even). A. 1/3 B. 1/2 •• C. 1/5 D. 1/4

    asked on May 11, 2017
  36. math

    On the blueprints of Adam's office building, the length of his rectangular office space is 5 1/4 inches. If the actual length of Adam's office space is 10 1/2 feet, what is the scale of the blueprint?

    asked on December 14, 2016
  37. chemistry

    Element x Isotope 55x 60% Isotope 56x 30% Isotope. 57x 10% 55× 60 =3300 56×30=1650 57× 10= 570 Add them up5520 divide by 100 the atomic weight of x is 55.2 Pls check if this is correct , answer and method

    asked on October 14, 2016
  38. Social Studies

    1 - How does one person become a citizen? (Select 2) - a person is born in the United States - a person of foreign birth is granted citizenship after living in the U.S. for 5 years - a person of foreign birth successfully completes the naturalization

    asked on October 6, 2016
  39. Chemistry

    When you mixand separate CaCO3 and SiO2 with acetic acid-vinegar, it is a chemical reaction. It bubbles and CO2 is produced. What property of CaCO3 causes this to happen? Could you explain this to me pls. I am guessing the acetic acid reacts with one of

    asked on September 21, 2016
  40. algera

    A cash register contains only ten dollar and fifty dollar bills. It contains three times as many ten dollar bills as fifty dollar bills and the total amount of money in the cash register is $2,080. How many ten dollar bills are in the cash register?

    asked on September 11, 2016
  41. chemistry

    Sig figs 33.067. 5 sig figs .0908. 3sig figs 1099. 4 .0087. 2 check pls

    asked on September 10, 2016
  42. math

    three fireworks are fired at the same time. The first one is fired every 64 seconds, the second one is fired every 84 seconds and the third one is fired every 96 seconds. How many seconds after they start will it take until all three fireworks are again

    asked on September 9, 2016
  43. chemistry

    If I have a sample from doing a half lfe lab with m&ms, not timed, just pulling out decayed or m&ms with rhe m on top, how do I calculate the half life using t1/2=(.693)/k formula. Do I have to do this 9 times as it took 9 trys to use up all the m&ms. I am

    asked on May 29, 2016
  44. Science

    What is anything that has mass and takes up space? 1) Weight 2) Volume 3) Density 4) Matter When you measure the boiling point of mercury, you are investigating a ____. 1) Chemical change 2) Chemical property 3) Physical change 4) Physical property Ab

    asked on April 6, 2016
  45. chemistry

    In the red cabbage lab, we just took the cabbage juice and in 5 separate cups mixed it with 5 different liquids, ex: coke, milk, cleaning agent, etc, and matched the color to a ph chart to tell if it was a base or an acid. Simple lab. The question needs a

    asked on March 5, 2016
  46. Chemistry

    Explain the chemical changes that occur in the red cabbage lab that changes the color of the cabbage juice. I know it has something to do with the hydrogen ions and maybe something to do with the electrons, but I don't understand what or how to answer this

    asked on March 4, 2016
  47. help me please

    What steps take place during DNA replication

    asked on January 12, 2016
  48. Maths trig

    Sketch the graphs of f(x)=3overx+1 and g(x)=-2x-4 on the same set of axes

    asked on June 17, 2015
  49. English

    Which is the better strategy for reading comprehension?

    asked on May 31, 2013
  50. Science-Biology

    why do plants grow better under certain lighting conditions than others?

    asked on October 5, 2012
  51. 8th grade

    5[6-2(5-3>to the zero power)] Please help so confused answer = -20 or 100 idk please help !

    asked on November 5, 2010
  52. CHEM- solution/freezing piont

    a solution of sulfur (2.560g) in naphthalene (100g) freezes 0.68K lower the freezing point of pure naphthalene (353.10K). for naphthalene, Kf= 6.8K kg mol. calculatem the molecular formula of the sulfur dissolved in the naphthalene?

    asked on October 14, 2010
  53. CHEMISTRY

    the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

    asked on October 13, 2010
  54. CHEMISTRY

    the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

    asked on October 13, 2010
  55. CHEMISTRY

    the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

    asked on October 13, 2010
  56. CHEMISTRY- answer check

    A 0.386g sample of a protein was dissolved in water and made up to a volume of 60mL at 21.0°C. At this temperature the osmotic pressure of this solution was 1.24mmHg. Calculate the molecular mass of the protein 12682 g mol-1 95025 g mol-1 9627613 g mol-1

    asked on October 9, 2010
  57. German

    Hello! Ich muss bis Dienstag eine erörterun schreiben. Titel: Niveauvolle Schulen ermöglichen bessere Ausbildung und Arbeitsleben. Ideen? stichwörter?kann jemand ein Paar Sätze schreiben? dke sehr!

    asked on November 22, 2009
  58. Riddle

    how did the hunter get hurt while bending over to study some tracks?

    asked on November 22, 2009
  59. English

    Hello! I don't want to ask for help with my homework, aI have some more serious problem.... next year I will go to collage, i will graduate in May. I really want to study law in Vienna, but I only found Uni Wien....does somebody know any other university,

    asked on October 28, 2009
  60. Urgent Chemistry!!

    I have done everything to solve this problem and I can't get the right answer (153.8J/degrees C). Ammonium nitrate, a component of fertilizer, decomposes: NH4NO3(s) > N2O(g) + 2H2) (g) the delta H=-36.0kJ/mol. 7.65g of ammonium nitrate was allowed to

    asked on November 20, 2008
  61. Calculus

    Find the scalar equation of the plane through the points M(1,2,3) and N(3,2,-1) that is perpendicular to the plane with equation 3x + 2y + 6z +1 = 0. I know that normal of the latter equation is (3,2,6) but now what do I do? Thanks.

    asked on July 7, 2008
  62. Mathematics

    THINKING QUESTION Create a quadratic equation in the form ax² + bx + c = 0 that crosses through the points (2/3, 0), and (-4, 0). The variables a, b, and c must be integers (whole numbers).

    asked on May 24, 2020
  63. Mathematics

    A toy rocket is launched from a 3m platform, at 8.1 m/s. The height of the rocket is modelled by the equation h= -4.9t^2 + 8.1t + 3, where h is the height, in metres, above the ground and t is the time, in seconds. 1. After how many seconds will the rocket

    asked on May 15, 2020
  64. Science

    Joshua trees cannot germinate and grow as easily in today's warmer climate. Which of these actions would be most likely to help the species survive climate change? Limiting the height of the tree. Becoming a mature plant without leaves. Growing in a range

    asked on February 25, 2020
  65. Science

    Which factor should be included in a model of energy flow into the atmosphere? variations in local temperatures places experiencing drought concentrations of greenhouse gases number of flood days per year How does climate change affect energy in the

    asked on February 15, 2020
  66. algebra

    Could you give me an example of a linear equation with two variables? Please don't look one up. You don't have to give the answer to the equation.

    asked on February 15, 2020
  67. science

    Which factor should be included in a model of energy flow into the atmosphere? variations in local temperatures places experiencing drought concentrations of greenhouse gases number of flood days per year How does climate change affect energy in the

    asked on February 14, 2020
  68. world geography

    "loss of biodiversity" is the same as "lost to deforestation" right?? im french so i just want to be sure my english is correct. lol

    asked on December 2, 2019
  69. Math

    Rachel is placing playing cards on a table by following these steps. Step 1: First she places one card in the middle of the table. Step 2: Next she adds one more card directly to the left, to the right, and below the first card. Step 3: Next she adds one

    asked on November 11, 2019
  70. History

    Which of the following were new transport technologies after the Revolutionary War? Select all that apply. Turnpikes*** Automobiles Railroads*** Airplanes

    asked on November 11, 2019
  71. Math

    John draws a square on a coordinate plane. Then, he draws an image of the square 3 units to the right of the original square. What is true about the corresponding sides of the original figure and the image? A. The corresponding sides are skew. B. The

    asked on August 26, 2019
  72. physics

    a 5.67g quarter sits on a record player a distance of 5cm from the axis of rotation. if the angular speed of the record player is 33 revolutions per minute, what should the coefficient of friction be to keep it from sliding?

    asked on April 27, 2018
  73. math

    11 the 2 second power minus 7 times 6 minus 4 to the third power divided by 2

    asked on February 12, 2018
  74. Math

    Spence wants to do by 4 1/2 pounds of peanuts evenly among her 12 students period how many ounces can she give each student?

    asked on May 15, 2017
  75. Social studies

    How die a compound interest rate differ from a simple interest rate? Compound interest rates pay more interest over time Compound interest rates are calculated only once a year Compound interest rates ideally lower than simple interest rates•• Compound

    asked on May 11, 2017
  76. Math

    a number cube is rolled 150 times. the number 3 comes up 43 times. hat is the experimental probability of rolling a 3? what is the theoretical probability of rolling a 3? A. 43/150 ; 1/6 B. 43/150 ; 1/50 •• C. 1/6 ; 43/150 D. 3/43 ; 1/6

    asked on May 11, 2017
  77. Math

    you draw five card from a standard deck of 52 cards p(heart)=4/5. what type of probability is illustrated and why?? 1) Theroretical ; the result is based on then number of possible outcomes 2) Theroretical; the result is found by repeating an experiment

    asked on May 11, 2017
  78. math

    in the middle circle have rectangle with length 12 and wide 5, find shaded area between rectangle and circle

    asked on April 1, 2017
  79. Algebra 2

    Solve by elimination -2x+2y+3z=0 -2x-y+z=-3 2x+3y+3z=5 Please help. I have 5 pages and 3 hours spent and found the question on Google, but the calculations did not add up correctly. Thank you

    asked on March 8, 2017
  80. math

    If A= X^2+2x+1, B=x=1 Find: A+B=

    asked on February 18, 2017
  81. math

    (x/50)+(x/25)+(3x/50)+(2x/25)+...+2x=

    asked on February 16, 2017
  82. algebra 2

    Absolute value 9 [9 - 8x] = 2× + 3 9 [9 -6×] =3 9 [-6x] = -6 54x = -6 x= -1/9 , × = 1/9 Is this correct? If not could you explain please. Thank you

    asked on February 6, 2017
  83. algebra 2

    These are absolute value questions. [-4b -8] + [-1b -b^2] + 2b^3. b=-2 given [8] + [2 (4)] +-8 Answer =8 Is this correct?

    asked on February 6, 2017
  84. chemistry

    2Na + 2H2O---> 2NaOH + H2 Need to find the molecules of H2 Atomic wt o Na = 23 48.7 g of Na 48.71/23 = 2.12 mols Na 2.12/2 × 24. (WHERE DOES THE 24 COME FROM) = 25.44 dm^3 H. (PLEASE EXPLAIN THIS PART) = 1.06moles 1.06mols× 6.02×10^23 avagados number=

    asked on January 7, 2017
  85. algebra

    P +4- 2 (p-10)> 0 Please check, it was marked wrong P+4 -2p +20 > 0 -p+ 24> 0 -p >-24 P > 24 Answer choices are 29, 26, 24, 22 Please explain thank you

    asked on January 4, 2017
  86. Math

    What does 5 yards 2 feet 3 inches plus 2 yards 2 feet 9 inches equal?

    asked on January 4, 2017
  87. algebra

    Could you please help? What are the solutions of the compound inequality? 2x - 2 < - 12 or 2x+3 > 7 Is this one x < - 5 or x> 2 2x -1/3 +3 = 6. This one is 2x-1 divided by 3 plus 3 is less than or equal to - 4 or 8x -2 divided by 2 minus one is greater or

    asked on January 2, 2017
  88. Math

    I don't know how to do my homework I'm in 4th grade and in Manchester gate in m's snyders class help me ppplllzzzz Its 2016

    asked on December 14, 2016
  89. chemistry

    Is this balanced properly 2H2O2----> 2H2O +O2 Thank you for the reactions of zinc and acetic acid. REAL QUESTION, if I was to rub all the copper off of a new penny down to the zinc, what would be the appearance of the zinc if I left it in vinegar (acetic

    asked on November 13, 2016
  90. chemistry

    Dr Bob, Sorry about this penny thing, but if I was to put pure zinc into acetic acid, what would happen to the zinc?

    asked on November 13, 2016
  91. Chemisry

    If you put copper coated penny 1983or newer, in vinegar, it turns blackish green. If you rub the copper off half the penny first and expose the zinc, put the penny in vinegar, will the results change? Thank you.

    asked on November 13, 2016
  92. Math

    How many letters are there in the correct answer for this question? a. One b. Two c. Three d. Four e Five

    asked on November 8, 2016
  93. Masth

    How many letters are there in the correct answer for this question? a. One b. Two c. Three d. Four e Five

    asked on November 8, 2016
  94. algebra

    Could you pls tell me why I have to change this sign. You should look at the sign like an equal sign. -2/5x -9 < 9/10 -2/5x < 99/10 x < -24.75 Why is this wrong? - I know the answer should be x> -24.75, but why? if this got sent twice, it is by error.

    asked on November 8, 2016
  95. algebra

    Could you pls tell me why I have to change this sign. You should look at the sign like an equal sign. -2/5x -9 < 9/10 -2/5x < 99/10 x < -24.75 Why is this wrong? - I know the answer should be x> -24.75, but why?

    asked on November 8, 2016
  96. Maths

    Anne & Tom competed in the 200m long distance swimming race. After the first 50 meters, Anne had gained 2 seconds against Tom's time. Over the next three laps, Tom gained 1.5 seconds, then lost 2.1 seconds and then gained 1.7 seconds. Who is the winner and

    asked on November 1, 2016
  97. Matrh

    Anne & Tom competed in the 200m long distance swimming race. After the first 50 meters, Anne had gained 2 seconds against Tom's time. Over the next three laps, Tom gained 1.5 seconds, then lost 2.1 seconds and then gained 1.7 seconds. Who is the winner and

    asked on November 1, 2016
  98. US History

    If you have a map of 19th century US and the names of the states are changed to Irish names, ie: Irish Sea , Mulligan, etc. And the question was to compare the map to a typical US map, would you answer with just explaining the obvious changes, or is there

    asked on October 30, 2016
  99. math

    Give reason 8454 is divisible by 6

    asked on October 24, 2016
  100. chemistry

    Back to the atomic emmission spectrum and the atomic theory. in the 1900s, scientists observed that when a gaseous element, such as hydrogen was subjected to an electric discarge that the atoms emitted electromagnetic radiation. The light emmitted could be

    asked on October 15, 2016

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