# 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

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

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

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

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.

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

7. ## Inverse Trig

What is the general solution to y = arcsin 0?

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

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**

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

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,

12. ## Inverse Trig

What is the general solution to y = arcsin 1?

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.)

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,

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

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

17. ## Inverse Trig

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

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

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

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

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

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.

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,

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

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?

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

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

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

29. ## Redland ES

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

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

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

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

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.

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

35. ## Chemistry

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

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??

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

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

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?

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

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

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.

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

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

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

46. ## Algebra

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

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

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

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

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

51. ## Science

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

52. ## english

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

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.

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?

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

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

57. ## Inverse Trig

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

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.

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

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

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

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

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

64. ## Science

Each student is pulling with a force of 10 newtons

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

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

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