Popular questions and responses by Luna
  1. Math

    Writ two decimals that are equivalent to the given decimal 5.300 3.7 0.9

    asked on September 11, 2013
  2. trig

    How do you solve sin(e^x)=0 for x? The question is "find the smallest number x such that sin(e^x)=0".... but I can't even get AN answer lol! Much appreciated!

    asked on September 11, 2013
  3. Geometry

    Hello! Please help! The dashed triangle is a dilation image of the solid triangle with the center at the origin. Is the dilation an enlargement or reduction? Find the scale factor of the dilation. The solid triangle has the points A(-6,0) B(6,5) and

    asked on December 4, 2017
  4. chemistry chem science

    A portable CD player that draws 160 milliamperes of current is powered by Ni-Cd rechargable batteries. Compute the mass of Cd consumed when a disk is played for 35 minutes. (enter your answer in grams)

    asked on May 2, 2014
  5. math

    How Many Lateral Faces Does A Triangular Prism Have?

    asked on March 13, 2014
  6. Physics

    A particle moves along the x axis. It is initially at the position 0.350 m, moving with velocity 0.110 m/s and acceleration -0.380 m/s2. Suppose it moves with constant acceleration for 3.50 s. (a) Find the position of the particle after this time. (b) Find

    asked on May 19, 2011
  7. Calculus (math)

    Warfarin is a drug used as an anticoagulant. After administration of the drug is stopped, the quantity remaining in a patient's body decreases at a rate proportional to the quantity remaining. Suppose that the half-life of warfarin in the body is 35 hours.

    asked on December 14, 2014
  8. science (check please (:)

    8.Which of the following would help decrease the human ecological footprint? . . . . . . . . . . . . . . . My answer: using public transportation instead of riding in a car? (I have doubts on my choice) but my other choice is using bottled water instead of

    asked on March 28, 2014
  9. Math

    which graph represents the solution to the given system y =-x+4 y = 1/3x + 8 Please help me..

    asked on January 18, 2019
  10. Calculus II: Finding the volume of a revolution

    Question: Find the volume of revolution bounded by y-axis, y=cos(x), and y=sin(x) about the horizontal axis. Since the rotation is happening at the horizontal axis, I thought the limits of integration would be [-1,1] and if the curves are rotated they

    asked on April 9, 2017
  11. math (cant figure it out)

    How to find the surface area of a cylinder with a diameter of 6ft and a height of 20cm using 3.14 rounded to the nearest whole number. (I cant figure it out my book doesn't give an example of it just a radius formula and ive tried searching the formula but

    asked on March 15, 2014
  12. Science

    1. Use the image below to answer the following question. An image shows a diver crouching on a diving board labeled 1. The diver launching off the board is labeled 2. The diver just about to enter the water is labeled 3 The diver in the water feet above

    asked on December 6, 2018
  13. Maths

    a man accepts a position with an initial salary of money $1800 per year if his salary increases at the end of every year by $1500 what would be his annual salary at Te begging of the 11th year

    asked on August 25, 2015
  14. science question

    Which process tends to occur more quickly, natural selection or artificial selection?

    asked on May 28, 2014
  15. MATH ✿╣Check╠✿

    A bag has 6 green marbles, 4 red marbles, 5 yellow marbles, and 3 purple marbles. What is the probability of choosing a purple marble? 1/6**? 6/18 3/20 1/9

    asked on May 4, 2014
  16. social studies (check plz)

    Which statement best describes the government of Canada? The monarch of Britain has total control over Canada. The Canadian parliament is ruled by the United States. Canada has complete power over its own government(MY ANSWER) The prime minister is the

    asked on March 27, 2014
  17. Geography

    Where would the following probably place the umpire yelled you’re out

    asked on October 2, 2019
  18. Career exploration

    1. Information security professionals hack into computer systems. (1 point) True False 2. What kind of network might you have at home? (1 point) LAN WAN wireless intranet 3. Apps are designed by: (1 point) software developers. network administrators.

    asked on December 11, 2018
  19. science

    A cubic block of one of the substances listed on the chart has a side length of 5.0 cm and a mass of 224 grams. Which material is it?

    asked on October 19, 2018
  20. Chemistry

    Radon-222 is a radioactive gas with a half-life of 4 days. Approximately how much of a 40 g sample of radon-222 would remain after 12 days?

    asked on January 18, 2017
  21. MATH ✿╣Check╠✿

    which expression would you use to figure out the number of ways you can arrange the letter in the word EQUATION?--------------My answer: 8P4 (the 8 and 4 are suppose to be small)

    asked on May 4, 2014
  22. MATH ✿╣Check╠✿

    8. There are 5 different cookies in a bag. One of them is your favorite, chocolate chip. What is the probability that you will not get your favorite? 1/5 2/5 24/25 4/5**?

    asked on May 4, 2014
  23. science (check)

    5.Which of the following could help reduce loss of biodiversity ? A. increasing construction of tall buildings B. increasing farming operations C. increasing conservation measures***** D. Increasing the human ecological footprint

    asked on March 28, 2014
  24. science (check)

    carrying capacity is the maximum number of _____ that an ecosystem can support. . . . My Answer: Individuals in a population (Is it right?)

    asked on March 28, 2014
  25. social studies

    12. How do the cherries on a cherry tree help the plant reproduce? Cherries develop into seeds, which are young, undeveloped plants. Animals eat the cherries, which helps disperse the plant’s seeds. Pollen inside the cherries fertilizes ovules, which

    asked on March 6, 2014
  26. English

    What does the word sense most likely mean in line 69 of the excerpt from "The Odyssey"? You bleary vagabond, no rag of sense is left you! A. intuition B. rationality*** C. sensibility

    asked on November 18, 2019
  27. science

    How many cells are in your body?

    asked on October 25, 2019
  28. Physics

    Two forces, F⃗ 1 and F⃗ 2, act at a point. The magnitude of F⃗ 1 is 8.80 N , and its direction is an angle 63.0 ∘ above the x-axis in the second quadrant. The magnitude of F⃗ 2 is 5.80 N , and its direction is an angle 54.0 ∘ below the x-axis

    asked on October 18, 2019
  29. English

    What is the tone or attitude of the writer toward living with pain? How does the writer use irony to develop this tone? An arid daylight shines along the beach Dried to a grey monotony of tone, And stranded jelly-fish melt soft upon The sun-baked pebbles,

    asked on September 25, 2019
  30. intro to Business

    i need help _____ refers to ethical or unethical behaviors by manager or employee of an organization. A.) Cartelling B.) business ethics C.) social ethics D.) collusion

    asked on August 16, 2019
  31. Science

    Joe wants to measure the perimeter of his house. What would be the appropriate unit of measurement that he should use? A) centimeters B) kilometers C) meters D) millimeters IM THINKING KILOMETERS

    asked on May 21, 2019
  32. Science

    When heating a liquid sample in a test tube, the mouth of the test tube should be... - A ) inverted. - B ) located under the student. - C ) pointed away from the student. - D ) heated first, not the bottom of the test tube.

    asked on May 21, 2019
  33. Science

    Summer is over and Cara and Mike are back in school. "Boy, it was not a very hot summer!" said Mike. "Yes, it was much cooler this year. We didn't get much swimming in," Cara answered. Mrs. Jenkins, their teacher, told her students that in science, they

    asked on May 21, 2019
  34. Math

    Write an expression to represent this situation (Four less than half a number???)

    asked on April 15, 2019
  35. Social Studies

    What is the purpose of john brown's ferry? A: To steal weapons to use in an uprising against slavery. B: To scare the union to succession C: To protest the passage of the Kansas-Nebraska Act D: To free enslaved people who worked there. Oof help me I

    asked on April 5, 2019
  36. Social Studies

    After a series of losses early in the war, Union troops turned the tide by winning an important battle at *Blank* A: Bull run. B: Fort Sumter C: Richmond D: Antietam

    asked on April 5, 2019
  37. Social Studies

    What did Levi Strauss and Luzena Stanley Wilson have in common? A: Both were Methodist Missionaries who moved to Oregan to try to Convert Native Americans to Christianity B: Both were gold miners who became very rich at the height of the California Gold

    asked on April 5, 2019
  38. Bio/math?

    The DNA in a human cell weighs approximately 2.0 x 10-12 grams. Calculate how many cells you would need to use to isolate 1 mg (milligram or 1x10-3 grams) of DNA, assuming you can get all the DNA out of a cell. I honestly don't know how to start and solve

    asked on February 11, 2019
  39. science

    4. Use the image below to answer the following question. An image shows two skydivers in free fall. One is upright with arms and legs extended. The second is upside down. Which kind of energy transformation occurs during skydiving? (1 point) mechanical to

    asked on December 6, 2018
  40. Science

    2. How does the gravitational potential energy of Coaster A compare with that of Coaster B? An image shows two roller coasters. At the left, coaster A is positioned at the top of a 30 meter hill. To the right, coaster B is atop a 15 meter hill. (1 point)

    asked on December 6, 2018
  41. Science

    4. Which of the following is true about all of the outer plants? a. Much of the material in these plants is solid. b. The surface of these plants is rocky. c. They have many moons. d. They all rotate in the same direction.***

    asked on October 23, 2018
  42. Science

    4. Which of the following is true about all of the outer plants? a. Much of the material in these plants is solid.*** b. The surface of these plants is rocky. c. They have many moons. d. They all rotate in the same direction.

    asked on October 23, 2018
  43. Science

    1.)Which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared the area of its orbit? A.)comet B.)asteroid C.)dwarf planet*** D.)planet Thanks for the help, Luna

    asked on October 23, 2018
  44. Pre-Algebra

    Can someone check this? 11. Which of these nonterminating decimals can be converted into a rational number? ***a. 0.626226222... b. 0.020220222... c. 0.123123123... d. 0.898998999... Thanks for the help, Luna

    asked on October 22, 2018
  45. Pre-Algebra

    16. Triangle ABC has coordinates A(1, 4); B(3, 2); and C(4, 2). Find the coordinates of the image A'B'C after a reflection over the x-axis. I don't understand please help. Greatly appreciate it, Luna

    asked on October 22, 2018
  46. Algebra, please check my answer!

    Simplify. mn^-4/p^0 q^-2 a) mq^2/n^4 b) mp/n^4 c)mn^-4q^2p^0 d)q^2/mm^4 **** ****= my answer. Please check this for me!

    asked on February 27, 2018
  47. algebra

    order these from least to greatest 0.67, 9/10,0,-0.11

    asked on January 3, 2018
  48. Chemistry

    How would I figure out how far the distance in kilometers between the sun and earth be if it takes 8.3 minutes for light to travel? (Light travels at 3.00 x 10^8)

    asked on October 10, 2017
  49. math

    Part 1:Is it possible for a composite number to have more than one prime factorization? Is it possible for a number to have no prime factors? Why? I think it is possible for a composite to have more then one prime factorization Part 2: Give an example of

    asked on September 11, 2017
  50. Math

    There was 30 students in the class 24 of these studen pass the test what percentage of these students passed their test

    asked on April 24, 2017
  51. Calculus II: Shell Method for finding volumes

    Question: What is the volume of the revolution bounded by the curves of y=4-x^2 , y=x, and x=0 and is revolved about the vertical axis. First, I had found the points of intersection to get the limits and I got -2.5616 and 1.5616. And then I plug it in the

    asked on April 9, 2017
  52. math

    Ashley ate 3/5 apples. Alan ate 4/20 apples. How much apples were left?

    asked on April 4, 2017
  53. Math

    there are 120 cards shared between Anna, Jane and Tina. Each time Anna gets 5, Jane must get 3, and Tina has to get 2 until all of cards are divided. How many cards does each person get?

    asked on March 30, 2017
  54. Language Arts

    Plz help ms sue Question #1: Which characteristics make "The Rider" a lyric poem? a. It uses musical language and expresses feelings b. It tells a story about a historical event c. It rhymes and has a regular rhythm d. It uses repetition and describes a

    asked on January 31, 2017
  55. Math Pz help

    A flat-screen TV cost $1,40.00. The TV is on sale for 35% off. What is the discounted price of the TV?

    asked on January 30, 2017
  56. Statistics

    Suppose Cindy is taking a multiple-choice test where there are 5 possible answers on each question. If she guesses on all 8 questions, what is the probability that she gets: a.) exactly 3 correct. b.) at least 1 correct. c.) What is the mean? d.) What is

    asked on November 2, 2016
  57. Physics

    Once all of the passengers aboard it a train leaves the station and it takes 30 minutes to reach its maximum velocity once at maximum velocity train travels the next 6.30×10^2 km for the next 12.6 hours what is the acceleration of the train leaving the

    asked on September 10, 2016
  58. Biology

    how to maintain the qualities of water ?

    asked on June 29, 2016
  59. Math

    I'm having trouble putting these least to greatest 6 and 9/10 , 6 and 19/80 , 6 and 3/4

    asked on May 19, 2016
  60. Chemistry

    What volume of coffee (pH=5.0) would be required to have .25 moles of H3O+ ions? (must be two steps)

    asked on April 26, 2016
  61. math

    Mrs Lopez has $9,118 in her bank account on March 1 she saves $609 in March. Then, she must pay $1,011 in taxes in April. Mrs Lopez is able to save $705 in May. At the end of May approoimately how much greater or less is her account balance than it was on

    asked on March 29, 2016
  62. Math

    Ann is x years old and her sister is 2 years older. If the product of their ages 80. Form an equation in x and solve to find the age of each. ______________________________________ I got up to, x + 2x = 80 x + 2x - 80 = 0 and now im confused... this is for

    asked on March 26, 2016
  63. spanish

    Ok so I just need someone to check my answers and tell me if they are right or wrong :) (if wrong why) And to help me with the unanswered questions (couldnt find the right answer for them) Choose the correct form of the préterito tense: 1. Susana dormía

    asked on January 19, 2016
  64. Math

    Ricardo spent $37 for a jacket which included $2.38 in sales tax. Write and solve an addition equation to find the price of the jacket before tax

    asked on January 13, 2016
  65. Health

    Long-term stress can lead to: (select 3) A. more frequent illnesses such as colds B. headaches C. heart disease D. self-actualization I think its A,B,C

    asked on January 12, 2016
  66. Math

    What percent of 250 is 70? A. 3.6% B. 18% C. 28% D. 175% I think it would be either C or D

    asked on January 11, 2016
  67. Algebra

    A baseball is hit at a point 2 feet above the ground at a velocity of 100 feet per second and at an angle of 45 degrees with respect to the ground. The path of the baseball is given by the function: f(x)= -0.0032x^2+x+2. where f(x) is the height of the

    asked on November 6, 2014
  68. Physics gr. 12

    Rick and Glen are cornered by zombies as they tend to be in each episode. In this particular episode, Glen fires a grappling hook with a rope attached up to the roof of the building they are standing beside. Glen takes a quick look at the bag the rope came

    asked on October 5, 2014
  69. science (help)

    18.Fertilizers and pesticides applied to farm fields in Pennsylvania have made their way down into the Chesapeake Bay in Maryland. This is an example of _________________ pollution. 19.Before beginning any land development project, people should carry out

    asked on May 26, 2014
  70. science (check!)

    when fossil fuels are burned they produce _____, the main greenhouse responsible for global warming trends. ----MY ANSWER: emission?---

    asked on May 26, 2014
  71. Math (help)

    what is the length of the radius of the LARGER cone(the LARGER cone has a slant height of 15) when the SMALLER cone has a radius of 8 and a slant height of 12ft ,please help.

    asked on April 8, 2014
  72. Math (help)

    how to find the surface area of a cone with a diameter of 8 and a slant height of 7? with steps? please

    asked on April 8, 2014
  73. Math help

    how to find the surface area of a cone with a diameter of 8 and a slant height of 7?

    asked on April 7, 2014
  74. Math help

    How do you find the volume of a cylinder with a diameter of 34m and a height of 27m?

    asked on April 7, 2014
  75. MATH ✿╣Check╠✿

    what is the surface area of a sphere with a radius of 5 meters rounded to the nearest square meter? MY ANSWER: 314m^2 (is it correct?)

    asked on April 7, 2014
  76. Math (check)

    what is the slant height for the given pyramid to the nearest whole unit? with a pyramid base of 12cm and a height of 8cm. MY ANSWER: 14

    asked on April 7, 2014
  77. Math (how do you find the volume of a cone)

    for example, a radius of 5 and a height of 20, could you please explain the steps? Thank you in advance!!

    asked on April 1, 2014
  78. science (check!)

    which of the following would be most likely to lead to increased biodiversity? . My answer: National park planning (though I kind of have the answer of farming in thought too)

    asked on March 30, 2014
  79. Science (check please)

    3. Which of the following pairs of terms could be used to describe a bullfrog that is active at night and enters a state of complete inactivity during colds months? . . . My answer: Circadian rhythm and hibernation.

    asked on March 28, 2014
  80. Math check (:

    find the volume of the cone with a radius of 6in. and a height of 11in. MY ANSWER: 415 in^3 (Is it right?) thank you in advance!

    asked on March 20, 2014
  81. math (check please)

    find the volume of a square pyramid with a base length of 9cm and a height of 4cm. ANSWER: 108 cm^3 (is it right?)

    asked on March 20, 2014
  82. math question (CHECK)

    find the surface area of a square pyramind with a base length of 24cm and a height of 16cm . . . . . . . . A.1056 cm^2 . . . . . . . . . . B.1536 cm^2 . . . . . . . . . . C.816 cm^2 . . . . . . . . . . D.1344 cm^2(I CHOOSE THIS ONE)

    asked on March 20, 2014
  83. Math question check

    find the surface area of a square pyramind with a base length of 24cm and a height of 16cm . . . . . . . . A.1056 cm^2 . . . . . . . . . . B.1536 cm^2 . . . . . . . . . . C.816 cm^2 . . . . . . . . . . D.1344 cm^2(I PICKED THIS ONE)

    asked on March 20, 2014
  84. MATH (check please)

    find the lateral area of a cone with a radius of 7ft. and slant height of 13ft, use 3.14 for pi and round the nearest tenth. . . . . A.439.6 ft^2 . . . . . B.324.5 ft^2 . . . . . . C.571.5 ft^2 . . . . . . D.258.7 ft^2(I PICKED THIS ONE)

    asked on March 19, 2014
  85. math (check)

    find the volume of a cylinder with a diameter of 16mm and a height of 5.7. A.2,292mm^3 . . . 4,584mm^3(i think its this one) . . . 689mm^3 . . . . 1,146 (but i also got an answer close to this but the tens place was 5)

    asked on March 19, 2014
  86. math

    Calculate the slant height for the given cone. Round to the nearest tenth. (explain?) 10.2 cm 11.4 cm 9.8 cm 12.0 cm (I picked this one)

    asked on March 17, 2014
  87. science

    3. Which of the following is an example of inbreeding? A farmer chooses the cows in his or her herd that produce the most milk and breeds only those cows. A farmer chooses the cows in his or her herd that produce the most milk and breeds them with cows

    asked on March 5, 2014
  88. social studies

    The first immigrants to the United States were mainly from England, Scotland, Ireland, Germany, and? a. Russia. b. Italy. c. Scandinavia. d. Greece I think its either A or C please help

    asked on March 5, 2014
  89. Math

    Hi, could you please provide a step by step solution explaining how to do this: [(a^2 - b^2 + a + b)/(a - a^3)] x [(1-a^2)/(a - b + 1)] The answer should be (a + b)/ a Thanks

    asked on February 4, 2014
  90. engliiish

    dramatic monoluge and soliloquy main similarity and main difference

    asked on October 2, 2013
  91. trig

    How do you solve sin(e^x)=0 for x? The question is "find the smallest number x such that sin(e^x)=0".... but I can't even get AN answer lol! Much appreciated!

    asked on September 11, 2013
  92. science

    A solution is prepared by mixing 100.0 mL of 0.0500 M AgNO3 with 75.0 mL of 0.0500 M CaCl2. What is the equilibrium concentration of Ag+ in solution? Ksp for AgCl is 1.6 x 10^-10

    asked on July 26, 2013
  93. MATH

    A random sample of state gasoline taxes (in cents) is shown here for 12 states. Use the data to estimate the true population mean gasoline tax with 90% confidence. Does your interval contain the national average of 44.7 cents? 38.4 40.9 67 32.5 51.5 43.4

    asked on April 9, 2013
  94. Math Help please!

    Find the area under the standard normal distribution curve for the following z-values: a. Between z= 0 and z = 2.01 b. Between z = 0 and z = -0.32 c. To the left of z = -0.73 d. To the right of z = 0.32

    asked on April 3, 2013
  95. math

    factor quadratic equation x^2-20x-10,925

    asked on November 28, 2011
  96. college math

    solve the equation 1). (x+4)(x-12)=5x 2). 4x^2+2x-14=16-17x

    asked on November 22, 2011
  97. physics

    object A exerts a gravitational force of magnitude 8.2 x 10^-10 N on object B. determine the magnitude of the gravitational force if, simultaneously, the separation distance is tripled, mA increased by 4 times and m8 is halved. explain your reasons and

    asked on October 14, 2011
  98. Algabra 1

    Buying a Home For most people, buying a house is a great investment that can offer security in an uncertain world, but buying a house is also a commitment. Application Practice Answer the following questions. Use Equation Editor to write mathematical

    asked on August 13, 2011
  99. physics

    if the angular quantities theta omega and angular acceleration were specified in terms of degrees rather than radians how would the kinematics equations for uniformly accelerated rotational motion have to be altered

    asked on February 28, 2011
  100. physics

    the drawing below shows three vectors acting on a particle. If the acceleration of the particle is zero. Find the magnitude and the angle respect to the east of the third vector.

    asked on January 4, 2011


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