# Natalia

Most popular questions and responses by Natalia
1. ## Physics

Engineering a highway curve. If a car goes through a curve too fast, the car tends to slide out of the curve. A frictional force acts on a fast car to oppose the tendency to slide out of the curve. Consider a circular curve of radius R and bank angle θ,

2. ## Algebra 1

A city planning committee surveys 100 people waiting at a bus stop about the expansion of the public transportation system. Is this an example of a: random sample, systematic sample, self-selected sample, convenience sample, bipartisan sample, or

3. ## Algebra 1

Graph each function, identify the domain and range, and compare the graph with the graph of y=x^1. 1.y=x^-10 Domain: Range: compare: 2.y=x+3^1+3 Domain: Range: compare: solve and graph.

4. ## Science

Calculate the expansion work done when 50g of water is electrolysis under constant pressure

5. ## Algebra 1

I get a bit confused so I hope someone can help with this question Consider the total amount that you are willing to spend on the buisness and how much it will cost you to make your items. Write an inequality that represents the fact that while making each

6. ## Physics

A ball of mass 5.0 kg moving with speed of 2.0 m/s in the +x-direction hits a wall and bounces back with the same speed in the -x-direction. What is the change of momentum of the ball?

7. ## math

a jet flies with wind at 1100 km/h and against the same wind at 750 km/h.Find the rate of the wind and the speed of the jet in still air.

8. ## Algebra

two ships leave the same port at the same time. One travels north at 12 miles per hour. The other travel west at 5 miles per hour. After four hours, how far apart are the two ships?

9. ## English

what is the adjective in sentence "Sam sees a yellow bus"

10. ## Chemistry

what is the percent by mass of nitrogen in (NH4)2CO3? how do you do this ?

11. ## physics

Cliff divers at Acapulco jump into the sea from a cliff 30.1 m high. At the level of the sea, a rock sticks out a horizontal distance of 9.19 m. The acceleration of gravity is 9.8 m/s With what minimum horizontal velocity must the cliff divers leave the

12. ## math

The hieght of a model rocket is 4% of the height of the actual rocket.The model is 1.8 meters high. How high is the actual rocket?

13. ## science

A sample of sucrose as been contaminated with sand.How would you purify the sucrose

14. ## Chemistry

How many moles of a gas at 100 degrees celciuos does it take to fill a 1.00 flask to a pressure of 1.50 atm?

15. ## math

A metal bar weighs 8.15 ounces. 93% of the bar is silver. How many ounces of silver is in the bar

16. ## Algebra 1

Simplify using long division. (remember to show all your work.) 3. (72-8x^2+4x^3-36x)/(x-3) 4. (8b^3-6)/(2b-1) simplify the expression, if possible. state the excluded values, if any. 5. 10x^2-25X+15^5x-5 6.2w^2-18^w^2+6w+9

17. ## Math

adeline spent 5/8 her money on books and 1/2 of the remainder on food. what percentage of her money had she ledt?

18. ## Physics

A rollercoaster car starts at rest on top of a frictionless hill of height 17 m, slides down to ground level, and then into a frictionless loop of radius 5 m. When the car is at the side of the loop (level with the center), find the magnitude of the car's

19. ## Algebra

Richard takes 35 minutes to mow a lawn, but with the help of his friend Joe it only took him 15 minutes. If Joe worked alone, how long would it take Joe to mow the same lawn?

20. ## Physics

1. A cannon ball M = 10.0kg with V = 2.4×102m/s is broken into 2 parts, if m1 = 6.4kg with angle 37° and m2 with 53°, what is the magnitude of v1 and v2?

21. ## physics

Find the total displacement of a mouse that travels 1.0m north and then 0.8m south.

22. ## Geometry

In Rhombus PQRS PQ=3a=7 and QR = 4a-11. What is the value of a?

23. ## chemistry

when is it better to use fractional distillation other than simple distillation?

24. ## chemistry

describe how you would produce pure samples of iron and sulphur powders from a mixture of the two.

25. ## math

Line segment segment CD has a slope of negative start fraction two over three end fraction and contains point C(−3, −6). What is the y-coordinate of point Q(−1, y) if segment QC is perpendicular to line segment segment CD question mark

26. ## Algebra

Hi again. I am supposed to graph y+3=-1/12(x-1)^2. How do I find the equation of the directrix, and the coordinates of the vertex and the focus?

27. ## english

are the following command sentences get into the car sit down and read your book

28. ## Physics

a simple pendulum consists of a 1.5 kg mass connected to a cored without and mass or friction. Initially the pendulum is vertically positioned when a 2.0 kg mass collides with ie, causing the pendulum to displace vertically upward 1.25 m. After the

29. ## English 002

Why complete senteces can help us in our writing at our jobs?

The density of water is 62.4 lbs/ft^3. what mass of water in kg will a rectangular can hold if it measures 2.00 ft by 3.00 ft by 6.00 inches?

You have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tails up, the ratio of heads up to tails up is 1 to 1.5. How many coins are tails up? How many coins in all?

32. ## calculus

Does any tangent to the curve y=ãx cross the x-axis at x= -1? If so, find an equation for the line and the point of tangency. If not, why not?

33. ## biology

a hibiscus plant was attacked by mealybugs which completely destroyed them.what is the relationship between the mealybug and the hibiscus plant.

34. ## chemistry

An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce

36. ## Math

You have 16 coins that are heads up and 18 coins that are tails up. After you add some coins that are tails up, the ratio of heads up to tails up is 1 to 1.5. How many coins are tails up? How many coins in all?

37. ## biology

a hibiscus plant was attacked by mealybugs which completely destroyed them.the mealybug was said to have thrived because it was not in its natural habitat.what is the likely effect of introducing an organism,like the mealybug,into a new habbitat?

38. ## chemistry

What are the physical properties of sucrose.

39. ## chemistry

A sample of sucrose as been contaminated with sand.How would you purify the sucrose

40. ## Algebra

Thanks to those who helped with my question: y+3=-1/12(x-1)^2. The only thing I am still unsure of is how to write the equation for the directrix. Do I just simply write 0=3-3, (the values plugged in for y=k-p). Thanks again for your help!!

41. ## Math

How to put 0.46 ,0.6 , 0.41 from least to greatest

42. ## English 002

Tell us why it is important to use good grammar, proper punctuation and clear senteces when you need to le someone know are displeased.

43. ## geography

the wide looping curves which are found along parts of the courses of some rivers are called: a.meanders b.flood plains c.river bluffs d.ox-bow lakes

44. ## chemistry

an aqueous solution contains 2 solutes A&B.A is soluble in hexane,B is not.Hexane is liquid at rom temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe giving full practical details how you would produce a

45. ## science

An aqueo solution contains 2 solutes A&B.A is soluble in hexane and B is not.Hexane is liquid at room temperature and does not mix with water.The density of hexane at room temperature is 0.7g/dm3.Describe givig full practical details how you would produce

46. ## Algebra

My standard-form equation is (x+3)^2+(y+2)^2=4. Do I find the radius by doing the square root of four? I just wanted to check on this. Based on the example in my book, it seemed like this is the way to do this, but I wanted to make sure, because they

47. ## Biology

I am doing an essay about the nuclear envelope. However, I can't find very good information about the function of this organelle. For example, how does the nuclear envelope protect the nucleus?

48. ## zambia school

500ml of gas at 20 degrees celcius is under a pressure of 100cm of mercury what would be its volume at s.t.p?

49. ## Science

A train is traveling west with a force of 820 N, and then the conductor applies the brakes with a force of 500 N. What is the resulting net force on the train?

50. ## math

How to multiply long fractions

51. ## English

Many days of the year are "national" something or other day. For instance, National French Fry day is in July. Write a paragraph telling your reader what day you'd like to start. Remember to use complete sentences. Remember that all the sentences need to

52. ## geography

one of the most recent benefits of the mountaineous regions of some caribbean islands,with their numerous rivers is: a.logging and recreation b.mining for gold and water sports c.eco-tourism and recreation d.hiking and hunting

53. ## information technology

discuss the concept of teleconferencing and telecommuting.

54. ## information technology

describe the network of presentataion of rind,star and bus.

55. ## physics

what are nonrenewable energy sources?

56. ## physics

what are some questions on work?

57. ## physics

what are some examples of sources of energy?

58. ## Algebra

(I posted this yesterday, if it looks familar, but no one was on who could help me). I am supposed to graph y+3=-1/12(x-1)^2. How do I find the equation of the directrix, and the coordinates of the vertex and the focus?

59. ## Algebra

I am supposed to write the standard equation of the parabola with the directrix x=1, and the vertex 6,2. I got y-6=1/4p(x-2)^2. Is this correct? I am supposed to graph y+3=-1/12(x-1)^2. I tried to find p, and I got 36. I don't think this could be correct,

60. ## Algebra

what is the equation of the line that passes though the points (-3,4) and (-9,6)

61. ## Calc

Hello! Really can't wrap my head around this so please help! Consider the function: f(x) = x^2+(1000-x)^2 First find out where it is increasing, and then use this fact to determine which number is larger: a) 1000^2 or b) 998^2 + 2^2 I found that the

62. ## geography

in the caribbean the potential for hydro electric power is greatest in which of the following groups of territories? a.Trinidad,Jamaica and Barbados b.Guyana,Jamaica and belize c.Trinidad,St.Lucia and St.Kitts d.Guyana,Barbados and the vergin island

63. ## geography

some material or load of the river is transported by dumping or hopping from one point to another by force of the water.this is called: a.traction load b.saltation c.solution d.suspension load

64. ## physics

what are renewable energurces?

65. ## chemistry

what are the physical properties of sucrose?

66. ## physics

what are some questions on momentum?

67. ## biology

Indentify what category (protein, carbohydrate, or lipid) each of the following is: hemoglobin, ligaments, RNA, DNA, muscle fibers, cholesterol I thought RNA and DNA were nuecleotides.. but who knows? Thanks in advance. If those are the only 3 possible

68. ## information technology

what are some of the negative impact of sharing information on a network?

69. ## agricultural science

breeds of broilers in Guyana and breeds of layers in Guyana.

70. ## math

how would you make an equation for a decreasing linear relation?

1. ## Psychology

We fully support. I also think that not always everything turns out in education, for example , in college. For example , I always got problems with chemistry. Therefore , this individual often used examples of ready-madeworks. Likee these:

posted on February 21, 2019
2. ## Math

If 1/3 of the loaf was left, the whole loaf will be 3x, so the answer will be 18.

posted on February 19, 2019

It would still be 1 millimeter, because think about it. If it triples in length every 10, you would multiply. 1 times 3 is 1 plus the other minutes making it 1. TRUST ME!!!

posted on January 9, 2019
4. ## ALGEBRA HELP #3

Part A: (3,1) Part B:(0,-5) (1, -3) Part C:(1,3) because they intersect at that point

posted on December 15, 2018
5. ## Math

4.3

posted on December 1, 2018
6. ## bussness, if that's even a subject

um.... reed you need to calm down and stop being so ignorant. Sueme asked for help if you cant help, don't comment. it's just that simple.

posted on April 11, 2018
7. ## math

daaaaaaa hola is 52

posted on March 12, 2018
8. ## homework

56m

posted on March 7, 2018
9. ## math

21/8

posted on March 2, 2017
10. ## physics

v= the square root of 2gh

posted on January 8, 2017

Which of the following best describes what happens to an enzyme after it catalyzes a chemical reaction? Is the answer to that question correct?

posted on September 26, 2016
12. ## physics

sqrt(2x760)/9.8 = 12s

posted on May 25, 2016
13. ## Chem 1411

al3n2

posted on April 1, 2016
14. ## V/CV OR VC/V PATTERN

vfddswWQ

posted on February 18, 2014
15. ## chemistry

moles of urea:16(g)/60(g/mol)=0.267(mol) 39(g)*1(kg)/1000(g)=0.039kg m=0.267/0.039=6.846(mol/kg)

posted on March 18, 2013

how much did maria bean plant grow between day 2 and day 3?

posted on November 9, 2011
17. ## math elementary

how much did maria bean plant grow between day 2 and day 3

posted on November 9, 2011
18. ## Physics

23m/s

posted on June 9, 2011
19. ## Chemistry

How many moles of a gas at 100 degrees celciuos does it take to fill a 1.00L flask to a pressure of 1.50 atm?

posted on November 19, 2010
20. ## Algebra

Whoops and one thing I forgot. Is it allowed for a parobala to open upward and have the directrix intercept it? Since p is greater than zero, it would have to open upward, but then the directrix would intercept the parobala (the directrix follows the x

posted on November 30, 2008
21. ## Biology

I'm sorry, I don't think that's the answer. I believe it's only one word, and it's one of the organelles in the cell. Thank you for answering, but is there any one word organelle that you think might be the answer?

posted on March 18, 2008
22. ## Biology

Thank you. This was very helpful.

posted on March 18, 2008