Annabelle

Most popular questions and responses by Annabelle
  1. Health

    The three lines of defense your body has against disease include all except? A. physical and chemical defenses B. inflammation C. immune system D. scarring True or false B cells and H cells are two important cells in the immune system that help fight

    asked on November 17, 2015
  2. science(check answers)

    1. A 60-kg cheetah reaches a speed of 30 m/s as it chases its prey.What is the kinetic energy of the cheetah? A.900 j B. 1,800 j C.27,000 j D. 54,000 j

    asked on January 29, 2014
  3. Chemistry

    Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti-knocking agents. A 3.279 g sample of one such additive containing only lead, carbon, and hydrogen was burned in an oxygen rich environment. The products

    asked on April 21, 2014
  4. Chemistry- please help ASAP!!!! thank you

    S(rhombic)+O2(g)--->SO2(g) change in H(rxn)= -296.06 kJ/mol S(monoclinic)+O2(g)--->SO2(g) change in H(rxn)= -296.36 kJ/mol 1. Calculate the enthalpy change for the transformation. S(rhombic)-->S(monoclinic) Our goal is to calculate the enthalpy change for

    asked on October 31, 2010
  5. Physics

    What is the rotational speed of the Second Hand on a clock. Note, the answer must be in rev/s. The Hour Hand is 2.31e-05 rev/s; The Minute Hand is 2.78e-4 rev/s. I've checked with 3 tutors and none of them have gotten an answer that is considered correct.

    asked on July 1, 2016
  6. science(check answers)

    2.how would the kinetic energy of a 12,000-kg train compare with the kinectic energy of a 900-kg compact car if both were traveling at the same speed? A.the trains kinectic energy would be equal to the cars kinectic energy. B.the trains kinectic energy

    asked on January 29, 2014
  7. Inverse Trig

    What is the general solution to y = arcsin 0?

    asked on April 21, 2014
  8. science (check answers)

    4.how does the kinectic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kg compact car traveling twice as fast? A.the train has less kinectic energy than the car. B.the train has more kinectic energy than the car.(I

    asked on January 29, 2014
  9. Social Studies

    1. Which most precisely describes the location of Southwest Asia? a) west of India b) south of the Arctic Cirlce c) north of the equator d) east of the Mediterranean Sea**

    asked on February 18, 2016
  10. social studies (CHECK ANSWERS)

    1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few key leaders.(I PICK THIS) C.It ended the revolution. D.It lessened the power of the president. 2. It is hard

    asked on January 29, 2014
  11. Math

    Hello! I need someone o check a couple answers for me please! I really need to get my Math and Science done, so I might be coming back again for my answers to be checked or to have help =) . 1. A car travels 172 miles using 7 gallons of gas. At that rate,

    asked on February 16, 2018
  12. Inverse Trig

    What is the general solution to y = arcsin 1?

    asked on April 21, 2014
  13. Physics

    What mass would you hang on the right side of the system in the figure to balance it -- that is, to make the clockwise and counterclockwise torques equal? (Let x1 = 33 cm and x2 = 12 cm.)

    asked on July 3, 2016
  14. math(CHECK ANSWERS)

    please check my answers. Mrs. Walters drove 160 miles on 5 gallons of gas. How many gallons of gas will she need to travel 256 miles? (ANSWER):160 divided by 5=32 256 divided by 32=8 Stephen read 90 pages in 6 days. If he continues reading at that rate,

    asked on January 29, 2014
  15. 3 other questions.

    Sorry. Elizabeth wants to turn her diary entry into a fictional short story. Which BEST identifies a structural change that would allow readers to know more about the thoughts and feelings of Stevie and Elizabeth's parents? A)changing the point of view

    asked on February 21, 2015
  16. math(CHECK ASNWERS)

    PLEASE CHECK MY ANWERS THANKS 1.The length of the driveway shown on a blueprint is 2 inches. If the actual length of the driveway is 20 feet, what is the scale of the blueprint? 1 in. = 1 ft 1 in. = 2 ft 1 in. = 10 ft (I PICK THIS) 1 in. = 40 ft 2.Marcus

    asked on January 26, 2014
  17. Inverse Trig

    How do I simplify arcsin (sin 6 pi) given the interval 0 ≤ theta < 2pi

    asked on April 21, 2014
  18. math

    hey everyone can you guys please answer these 5 questions or 3 or 2 how many you want to answer I just need answers for these last 5 since I did the rest and thanks to you all because I do appreciate this. 1.The length of the driveway shown on a blueprint

    asked on January 26, 2014
  19. Chemistry

    2) What is the empirical formula of a compound containing C, H, O if combustion of 1.23g of the compound yields 1.8g CO2 and .74g of H2O 3) What are the empirical and molecular formulas of a hydrocarbon if combustion of 2.10g of the compound yields 6.59g

    asked on April 10, 2014
  20. ALEGEBRA 1

    Part A: Explain why the x-coordinates of the points where the graphs of the equations y = 2−x and y = 4x + 3 intersect are the solutions of the equation 2−x = 4x + 3. Part B: Make tables to find the solution to 2−x = 4x + 3. Take the integer values

    asked on January 4, 2016
  21. math(help)

    can anyone answer these 3 answers showing how your work.thanks Mrs. Walters drove 160 miles on 5 gallons of gas. How many gallons of gas will she need to travel 256 miles? Stephen read 90 pages in 6 days. If he continues reading at that rate, how long will

    asked on January 29, 2014
  22. chemistry (quatatative analysis)

    How many grams of Ba(IO3)2 can be dissolved in 500 mL of a 0.100 M KIO3 solution at 25 oC? Use activities for this calculation. The solubility product constant for Ba(IO3)2 is 1.57×10-9 at 25 oC.

    asked on March 26, 2010
  23. math

    can someone answer these ive been stuck on them for almost 2 hours !!!!! 1.which pair of ratio form a proportion? choose all that apply. A. 1/6, 4/20 B. 7/9, 28/36 C. 14/18, 21/27 D. 30/80, 8/18 2.which pair of ratios does not form a proportion? A. 3/5,

    asked on January 23, 2014
  24. Chemistry

    The principal quantum number, n, describes the energy level of a particular orbital as a function of the distance from the center of the nucleus. Additional quantum numbers exist to quantify the other characteristics of the electron. The angular momentum

    asked on March 26, 2014
  25. Algebra 2

    A lamppost casts a shadow that is 24 feet long. Tad, who is 6 feet tall, is standing directly next to the lamppost. his shadow is 15 feet long. How tall is the lamppost?

    asked on August 24, 2013
  26. Math

    if a number is not a rational number, then it is______. A. an integer B.an irrational C.whole number D.a radical My best answer is B. Can you check please @Ms.Sue

    asked on November 18, 2015
  27. Business

    when identifying the factors of production the term ____ may also be used to refer to labor a. human resources** b. contract resources c. production resources d. management resources ______ includes the physical and intellectual contributions people make

    asked on August 26, 2019
  28. Spanish 2

    Complete the sentences with the appropriate indirect object pronouns and present tense verb forms.? Modelo- (gustar) A mi ME GUSTAN las peliculas de accion. 1. (aburrir) A nosotros _____ los efectos especiales que no son muy realistas. 2. (encantar) A ti

    asked on June 12, 2008
  29. Redland ES

    6 children share 5 small pizzas equally? How do I solve this?

    asked on January 22, 2014
  30. science(1answer)

    4.how does the kinectic energy of a 10,000-kg train traveling at a speed of 10 m/s compare with that of a 2,600-kg compact car traveling twice as fast? A.the train has less kinectic energy than the car. B.the train has more kinectic energy than the car.(I

    asked on January 29, 2014
  31. MATH !!!

    PLEASE ANSWER THESE 3 I BEEN STUCK ON ALL DAY AND IM SICK OF THEM JUST WANNA SLEEP..PLEASE LABEL ANSWER WITH A B C D ! 1.which pair of ratio form a proportion? choose all that apply. A. 1/6, 4/20 B. 7/9, 28/36 C. 14/18, 21/27 D. 30/80, 8/18 2.which pair of

    asked on January 24, 2014
  32. English

    Contains dialogue is created from the mind of the author. -A.B Written in chronological order, following the author from the beginning of his/her life to the end - A.B? Does not necessarily follow the main character from beginning of his/her life to the

    asked on February 21, 2015
  33. Math

    A cellular phone company offers two types of monthly plans. Plan A: 10 cents per minute Plan B: a monthly fee of $10 plus 7.5 cents/minute Define the appropriate variables and write an equation relating the cost and the numbers of minutes for each plan.

    asked on February 21, 2017
  34. chemistry

    50.00 mL of OOH was diluted to 250.0 mL with deionized water. In the determination of the total cation concentration, 25.00 mL aliquots of the dilute OOH were passed through a cation exchange column and the eluent titrated with an average 27.42 mL of

    asked on January 26, 2012
  35. Chemistry

    Determine the mass of the products formed by the combustion of a 7.6g of a coumpound with emprical formula C7H12

    asked on April 10, 2014
  36. Social Studies

    Where do most people in Arabia and Iraq live? a. in the Fertile Crescent b. in the Rub' al-Khali c. in cities d. in and around Mecca I think either A or C??

    asked on February 18, 2016
  37. Science

    Which of the following describes the function of the central vacuole in plant cells? a. It helps reproduction b. It helps regulate water content c. It plays key role in photosynthesis d. It stores food. I think it's D. Am I wrong? 2) What are the

    asked on November 24, 2010
  38. social studies(check answers)

    please check my answers and if there wrong maybe you could tell me the correct one.but thanks anyways. 1. How did the formation of the National Action Party change Mexican politics? A.It ended the one-party system. B.It consolidated power among a few key

    asked on January 30, 2014
  39. Algebra

    A box contains blue and purple pens. There are 6 less than triple the number of blue pens as purple pens. A blue pen costs 20 cents and a purple pen cost 35 cents. The total value of all the pens is $37.90. How many of each colour pen is their?

    asked on January 24, 2017
  40. chemistry

    From the following information, calculate the standard change of enthalpy for the combustion of coal. C + O2 -> CO2 COMPOUND HEAT OF FORMATION coal 0.0 carbon dioxide -393.5 water (l) -285.9 oxygen 0.0

    asked on July 15, 2012
  41. Math

    A water tank is being filled with water. The volume of water in the water tank varies with time. The tank contains 200 liters of water after 2 minutes. Define appropriate variables, and write an equation relating the volume of water and time. What does the

    asked on February 21, 2017
  42. Algebra

    A garden is 6 m by 10 m long. The garden is to be surrounded by a walkway that is of equal width on all sides. The perimeter around the outside of the walkway and the garden together is 60.8 m. Find the width of the walkway.

    asked on January 25, 2017
  43. Biochemistry

    What properties of the enzymes give rise to their ability to distinguish one substrate from another??? And where can I find information on this? http://en.wikipedia.org/wiki/Enzyme Scroll to Specificity then read from there to Allosteric modulation

    asked on December 21, 2006
  44. Chemistry

    Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti-knocking agents. A 3.279 g sample of one such additive containing only lead, carbon, and hydrogen was burned in an oxygen rich environment. The products

    asked on April 24, 2014
  45. biochemistry

    What chemical transformations are catalzyed by the enzyme i) catalase and ii) nitrogenase ???? confused, please help! In nitrogen-fixing microorganisms, nitrogenase catalyzes the conversion of nitrogen to ammonia. Catalase accelerates the breakdown of H2O2

    asked on December 23, 2006
  46. Algebra

    How to solve a question with two variables? X=3Y-6 20Y+35X=3795

    asked on January 25, 2017
  47. Programming

    Write a function that takes one positive integer value (call it n) as a parameter and produces the sum of the integers between 1 and n. Hint: The sum of the integers from 1 to n is n*(n+1) all over 2 I know this is how the function should look but I am

    asked on April 29, 2014
  48. Chemistry

    Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as anti-knocking agents. A 3.279 g sample of one such additive containing only lead, carbon, and hydrogen was burned in an oxygen rich environment. The products

    asked on April 27, 2014
  49. statistics

    a sample of n=25 scores has a mean of M=60 and a std dev of s=12. Find the z-score corresponding to each of the following scores from this sample. X=66,X=48,X=84,X=55

    asked on February 7, 2008
  50. Physics

    A wooden plank with length L = 7.5 m and mass M = 104 kg is centered on a granite cube with side S = 2.0 m. A person of mass m = 64 kg begins walking from the center of the plank outward, as shown in the figure. How far from the center of the plank does

    asked on June 22, 2012
  51. Science

    Can someone check my answer? ____ is anything that has mass and volume. My answer: matter. Is that correct?

    asked on February 26, 2018
  52. english

    What is simple predicates and complete predicates of A king had a strange dream

    asked on July 12, 2017
  53. math

    A diagram measuring 20 cm long is reduced on a copy machine to 15 cm long. If the width of the original copy is 16 cm, what is the width of the reduced copy? Show your work.

    asked on February 22, 2016
  54. math

    your bill comes to $23.55 at a restaurant. how much money should you leave for a 15% tip for good service? How much money should you leave for a 20% tip for excellent service?

    asked on February 1, 2016
  55. Chemistry

    1) Calculate the energy. in joules, of a photon of wavelength 1.250x 10^3 nm 2) If 3.011x 10^23 molecules have a mass of 20.04 grams, what is the molar mass of the substance? Is it 40.07g/mol? 3) 47.5g of Boron contains __________ atoms of B? Is it

    asked on February 15, 2014
  56. ENGLISH

    I've been given this question for the novel THE GREAT GATSBY and have been stuck on how to answer it for hours. "Boy meets girl...boy loses girl" this novel is merely another love story. to what extentdo you share this opinion of the novel? Im not sure how

    asked on October 25, 2008
  57. Inverse Trig

    Using -pi/2 ≤ y ≤ pi/2, what are the following solutions? y=arcsin root3/2 y=arcsin 1/2

    asked on April 21, 2014
  58. English

    What is the simple and complete predicates. She advised him to look for the singing bird. The eldest son asked permission to go. He believe that the he could catch the bird.

    asked on July 12, 2017
  59. Help Please, Oh Please--Algebra

    Identify 3x^5 − x^2 + 4x as a monomial, binomial, or trinomial. A. trinomial B. binomial C. monomial D. none of these

    asked on November 6, 2015
  60. making dot arrays

    to make a 14-dot array that has exactly two rows, is this going to have a total of 14 dots or will it be 14 dots per row

    asked on September 2, 2008
  61. Math

    Solve each system algebraically Y=4x-9 and y=x-3 This is what I have done 4x-y-9=0 x-3+4x-9=0 3x=9+3 3x=12 X=4 Than I substituted x in one equation y=4-3 y=1 Please let me know if I am doing this correctly. Thx

    asked on April 14, 2017
  62. Phys

    You are designing a curve in a highway. If the turn is too sharp (the radius of curvature is too small), then cars may lose traction. Find the minimum radius of curvature of a road so that a 1000kg car doesn't skid. The speed limit is 15m/s and the static

    asked on June 29, 2016
  63. Physics

    A 100-g block hangs from a spring with k = 5.2 N/m. At t = 0 s, the block is 20.0 cm below the equilibrium position and moving upward with a speed of 216 cm/s. What is the block's speed when the displacement from equilibrium is 27.0 cm? The answer is 172

    asked on July 7, 2012
  64. Science

    Each student is pulling with a force of 10 newtons

    asked on November 1, 2012
  65. algebra

    Help with these please?! Simplify the complex expression: -3 --- 5 - + y x and 2 -- + 2 x+4 ---------- 3 -- + 1 x+4 I cannot decipher what you meant to type. Try using parentheses instead of changing to a new line for fractions. -3/[(5/x)+y] (2/x+4)+2 over

    asked on May 8, 2007
  1. Math

    i am very confued on how to sovle this please send help and give me the answer on how to do this😤😤😤😤😤

    posted on September 30, 2019
  2. math

    Oops, maybe I should stick to helping people in Social Studies and Science, subjects that I'm better at, or leave math to the tutors.

    posted on February 28, 2018
  3. math

    So I did it wrong?

    posted on February 28, 2018
  4. math

    Either I need to crack open a math book and I messed up, or Damon does things a different way. Either way I need to do more math!

    posted on February 28, 2018
  5. math

    Ahh, Jiskha messed up my first part! Dang it!

    posted on February 28, 2018
  6. math

    1 6 ? ? 1 --- + ---- = --- Then, --- + ---=?/? 8 7 ? ? 6 8+7=15. 1+6 = 7. 7/15 simplified is 15/7. 15/7 as a mixed number is 2 1/7. Then, do 2 1/7+1/6.

    posted on February 28, 2018
  7. World history

    I disagree. The "Byzantine Empire" was inhabited in the middle ages! Did you do any research of the Carolingian dynasty? I suggest you do. I think it is A and B. If you don't know, maybe check your book?

    posted on February 28, 2018
  8. Skills for success science

    The options?

    posted on February 27, 2018
  9. Science

    Thank you!

    posted on February 26, 2018
  10. Math

    Oopsies, my bad! Sorry if I offended you and thank you, Ms. Sue and Scott for helping me!!!! ^o^

    posted on February 16, 2018
  11. Could you please check over my english? :)

    Actually number 6 would be direct object.

    posted on February 15, 2018
  12. English

    What is the simple and complete predicate She advised him to look for the singing bird. The eldest son asked permission to go. He believe that he could catch the bird.

    posted on July 12, 2017
  13. Algebra

    Thanks Steve! I couldn't figure out how to put the equations together.

    posted on January 25, 2017
  14. Math

    1. is correct 2. is correct to

    posted on December 6, 2016
  15. physics

    Thanks again, Damon. Still not getting this at all. I appreciate your time, but the steps still don't make sense to me.

    posted on July 3, 2016
  16. Physics

    Thank you!

    posted on July 3, 2016
  17. Physics

    The center of the anvil. x1 = 33 cm to the left with a 50 g weight hanging. x2 = 12 cm to the right with a ? weight hanging.

    posted on July 3, 2016
  18. Physics

    Sorry! Mass of the weight on the left hand side, hanging from x1 = 50 g

    posted on July 3, 2016
  19. Physics

    Thank you, Scott

    posted on July 2, 2016
  20. physics

    answer key marks that as incorrect. thanks though

    posted on July 1, 2016
  21. Physics

    Thank you

    posted on June 29, 2016
  22. Physics

    Sorry, I don't understatnd, and the answer doesnt compute to what is considered correct.

    posted on June 29, 2016
  23. Social Studies

    Thanks!

    posted on February 18, 2016
  24. Health

    I just changed my answer and are they D. false

    posted on November 17, 2015
  25. Health

    @Ms.Sue

    posted on November 17, 2015
  26. 3 other questions.

    no no no.. not D, B.

    posted on February 21, 2015
  27. 3 other questions.

    Ah.. 1 is D because " Which BEST identifies a structural change that would allow readers to know more about the thoughts and feelings of Stevie and Elizabeth's parents?".. Third Person Omniscient: The narrator knows everything; all thoughts, feelings, and

    posted on February 21, 2015
  28. English

    thank you (: I was thinking that the first one was fiction but I was unsure.

    posted on February 21, 2015
  29. Programming

    In Visual Basic Form..

    posted on April 29, 2014
  30. Chemistry

    but on 4 the spin is Ms= -1/2

    posted on March 26, 2014
  31. Chemistry

    A. is wrong that is not one of the answers. I have calculated 1.5912 X 10^-28 but the only near answer is 1.591 x 10^-19

    posted on February 16, 2014
  32. science(check answers)

    i pickerd A.

    posted on January 29, 2014
  33. social studies

    goodjob matt

    posted on January 23, 2014
  34. social studies

    yay !!

    posted on January 23, 2014
  35. can some1 plz recheck my answers

    n n

    posted on March 13, 2013