# Ashleigh

Most popular questions and responses by Ashleigh
1. ## Statistics

If the correlation coefficient is 0.790, what is the explained variation? A. 37.6% B. 62.4% C. 79% D. 21%

2. ## Social Studies

describe two ways some caribbean families preserve their cultural traditions

3. ## Algebra 2

The graph shows a probability distribution. Which probabilities are equal to 0.3? Select each correct answer. P(X≥3)

4. ## Science

A metal object with a mass of 19g is heated to 96 degrees celcius, then transfered to a calorimeter containing 75 g of water at 18 degrees celcius. The water and metal object reach a final temperature of 22 degrees celcius. What is the specific heat of

5. ## Chemistry

The gaseous product of a reaction is collected in a 25.0-L container at 27 C. The pressure in the container is 216 kPa, and the gas has a mass of 96.0 g. What is the molar mass of the gas?

6. ## physics

Estimate the force with which a karate master strikes a board if the hand's speed at time of impact is 4.78m/s, decreasing to 1.55m/s during a constant time of 0.00239 s with the board. The mass of coordinated hand and arm is 0.701 kg. Answer in units of

7. ## Math

A Norman window has the shape of a rectangle surmounted by a semicircle. (Thus the diameter of the semicircle is equal to the width of the rectangle.) If the perimeter of the window is 24 ft, find the value of x so that the greatest possible amount of

8. ## Chem-organic, bio, intro

A gas mixture contains oxygen and argon at partial pressures of 0.60 atm and 425 mmhg. If nitrogen gas added to the sample increases the total pressure to 1250 torr, what is the partial pressure in Torr of the Nitrogen added? Steps for solving this problem

9. ## Chemistry I

Determine the hydronium ion concentration in a solution that is 0.00018 M Ca(OH)2. Answer in units of M

10. ## physics

a lead bullet is placed in a pool of mercury. what fractional part of the volume of the bullet is submerged?

11. ## Math

The school band is comprised of middle school students and high school students, but it always has the same maximum capacity. Last year the ratio of the number of middle school students to the number of high school students was 1:8. However, this year the

12. ## math

THE HUMAN CANNONBALL - AGAIN! (2 pts) On July 23, 1997, Washington County, in Oregon was advertising their Fair & Rodeo special attraction on the Internet: "As the countdown begins, David Smith, Jr. - THE BULLET - puts on his safety helmet, slides down the

13. ## Math

A girl is three years older than her brother. If their combined age is 35 years, how old is each?

14. ## Math

Ace's grandfather is 3 years older than Ace's grandmother. Their combined age is 121 years. How old is each?

15. ## physics

Blood of density 1010kg/m^3 that is to be administered to a patient is raised about 1.51 m higher than the level of the patient's arm. How much greater is the pressure of the blood than it would be if the container were at the same level of the arm? The

16. ## physics

An unclothed student is in a 27 degree Celsius room. If the skin temperature of the student is 37 degree Celsius, how much heat is lost from his body in 18 minutes, assuming that the emissivity of the skin is 0.91 and the surface area of the student is 1.7

17. ## pre-calculus

6cos^2(x)-5cos(x)-6

18. ## physics

Glycerin in water diffuses along a horizontal column that has a cross-sectional area of 2.3cm^2. The concentration gradient is 0.028 kg/m^4, and the diffusion rate is found to be 5.8 x 10 ^-15 kg/s find the diffusion coefficient in units of m^2/s.

19. ## Chemistry

How much heat is required to vaporize 1.00 L of CCl4 at its normal boiling point? The following data are given for CCl4. Normal melting point, -23 degree celcius , normal boiling point, 77 degree celcius density of liquid 1.59 g/mL; ; enthalpy of fusion

20. ## Chemistry

Express the concentration of a 2.0 M NaOH solution as a mass/volume percent.

21. ## Math 1330

In a survey of 1000 eligible voters selected at random, it was found that 200 had a college degree. Additionally, it was found that 90% of those who had a college degree voted in the last presidential election, whereas 47% of the people who did not have a

22. ## physics

The motion of a certain simple harmonic oscillator is described by: x(t) = (12 cm) sin [(1 s ^(-1)) t] What is the earliest time t > 0 or t = 0 at which the oscillator's velocity is zero?

23. ## science

How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 700. mL of 1.294-M solution of NH3 in order to prepare a pH = 9.70 buffer? (pka of NH3 = 9.25)

24. ## Chemistry

What is the osmotic pressure of a solution made from dissolving 60.0g of glucose, C6H12O6, in 450 mL of water at 10.0∘C?

25. ## statistics

The first sample had 49 subjects and 7 had blue eyes. The second sample had 465 subjects and 244 of these had blue eyes. What is the value of the pooled estimate of the proportion used to test the hypothesis that the population proportions of blue eyes are

26. ## Chemistry

Express the concentration of a 2.0 M NaOH solution as a mass/volume percent. Can you please explain how to get the answer?

27. ## Chemistry

a 20.0ml sample of HCL solution is placed in a flask with a few drops of indicator. If 30.0ml of a 0.240 M NaOH solution is needed to reach the endpoint, what is the molarity of the HCL solution?

28. ## physics

Compressing gases requires work and the resulting energy is usually converted to heat; if this heat does not escape, the gas's temperature will rise. This effect is used in diesel engines: The compressed air gets so hot that when the fuel is injected, it

29. ## Math

A census-taker rings Mr. Manning's bell and asks how many children he has. "Three daughters," he replies. "And how old are they, in whole numbers?" asks the census-taker. "Well, I'll tell you this:the product of their ages is 72, and the sum of their ages

30. ## physics!!!

A copper rod is given a sharp compressional blow at one end. The sound of the blow, traveling through air at -2.79 degrees Celsius, reaches the opposite end of the rod 9.39ms later than the sound transmitted through the rod. What is the length of the rod?

31. ## math

What is the improper fraction 61/7 written as a mixed number ?

32. ## art

for my homework assignment i have a picture of Michaelangelo , creation of Adam painting i have to describe what i think is happening in the painting and also write a story about the painting . Ive described the painting but i am struggling with the story

33. ## Maths

Explain why a multiple of 80 is also a multiple of 8.

34. ## Physics

A 4-person bobsled team pushes the 330 kg sled down the 6.0 degree hill with a force of 1780 N. The coefficient of friction for ice and the runner is 0.135. How fast will the sled be moving at the end of the 40m push? Answer is in meters/second

35. ## Math

A committee of 100 Democrats is formed with 22 members from the East, 38 members from the Midwest, and 40 members from the West. If a random sample of 3 members from this committee is selected, what is the probability to the nearest percent that all 3 are

36. ## Math

Set up and solve a system of equations to solve the application. A rectangular area of 525 square feet is enclosed using 100 feet of fence. What are the dimensions?

37. ## Chemistry

What volume of water should be added to 500 mL of a 1.0 mol/L CuSO4 solution to dilute it to 0.5 mol/L?

38. ## Phys

Ok...this is a super dumb question, but is an electric field best described as fact, hypothesis, theory or all of these? I think that it is fact, since there are means of measuring the electric field of something, but I could be wrong. They have found

39. ## science

How does osmosis explain the fact that a watery syrup forms when you put sugar on strawberries? I searched Google under the key words "osmosis" to get these possible sources: (Broken Link Removed) http://en.wikipedia.org/wiki/Osmosis I hope this helps.

40. ## Organic Chemistry

Hello everyone. I have a question that I am having difficulty answering. I can not figure out the synthesis of MELPHALAN, a cancer fighting drug. If anyone has a clue, please help! Thanks, Ashleigh

41. ## Math

I'm helping my daughter with Algebra homework and I've forgotten how to solve the following. x/2-12 = -3 + x Can someone help

42. ## math

The price of an antibiotic decreased from \$86.25 to \$52.75 for a bottle of 100 tablets. Find the ratio of the decrease in price to the original price.

43. ## resume (education)

I have to make a resume and my teacher wants us to include any professional memberships. Does honor society (in college) count? If not, please include some examples of professional memberships. Thank you!

44. ## Physics

If the change in position Dx is related to velocity v (with units of m/s) in the equation Dx = Av, the constant A has which dimension? a. m/s^2 b. m c. s d. m^2 I chose b?

45. ## physical science

How far can a person run in 15 minutes if they run at an average speed of 16km/hr?

46. ## Science

From a laboratory process designed to separate water into hydrogen and oxygen gas, a student collected 11.9 g of hydrogen and 78.5 g of oxygen. How much water was originally involved in the process?

47. ## Physics

You're driving along at 101 km/hr on a rainy day. Suddenly a deer jumps out 30 m ahead of you. You slam on the brakes of your 1972 Mustang (no ABS) with Goodyear tires (coefficient of kinetic friction= 0.525, coefficient of static friction=0.750). Will you

48. ## english

his expression showed how highly he valued his own opinions and scored the view of the others. smug?

49. ## Science

How is the air motion in the eye of a hurricane similar to the air motion at a high pressure center?

My science homework questions is: You measure the boiling temperature of 3 clear liquids. 1 of them boils at 100C. The other 2 at 85C and 115C. How can you use numbers to identify the first liquid? Can someone help?

51. ## Math

What might the lengths of a horse enclosure border be if the area of the enclosure is 52 square yards?Be sure to give evidence to support your thinking. Draw a picture to support your answer?

52. ## Physics

A student is swinging a 9 kg ball in a circular path in the vertical plane. Consider the instant when the string is horizontal as the ball is on its way up as shown in the figure. At this instant, the instantaneous tangential speed is 6 m/s, and the radius

53. ## science

What are three methods scientists use to form scientific explainations ?

54. ## economics

according to the law of demand,when the price of an item goes up,the quality demanded?

What is the simple and complex for this sentence. Making a bad grade on such an easy spelling test is such an embarrassment.

56. ## physical education

famous dancers or dances in relation to hip hop.

57. ## science

My science homework questions is: You measure the boiling temperature of 3 clear liquids. 1 of them boils at 100C. The other 2 at 85C and 115C. How can you use numbers to identify the first liquid? Can someone help?

58. ## Math B

Can some one please explain the set of real numbers as a field to me?

59. ## applied physics

if a DC motor uses a775 coulombs of charge in 15 seconds,how much current is produced

60. ## English

I need help to unscramble this word MEFHSKAIT

61. ## geography

i don't understand what an ethinic group is????

1. ## Science

How much energy is needed to raise the tempreture of 2.0kg of aluminium by 30 degreese celcius

posted on November 30, 2017
2. ## Math - Fractions

5625 pictures

posted on October 18, 2017
3. ## Chemistry

6*10^-39

posted on April 4, 2017
4. ## Maths

21

posted on January 23, 2017
5. ## math

THE ANSWER IS 13 FOR PEOPLE HOW LOOK THIS UP SO THEY GET A 100 ON THEIR MATH HOMEWORK

posted on November 15, 2016
6. ## English

In the Odyssey, what roles are played by the female characters you encountered in this unit? Describe some of these female characters, their traits, and the roles they played within the selections you read, especially considering that all of those

posted on March 11, 2016

16% out of 20% perfer not to wear school uniforms so technically the 4% would not even count so the percent is 16%.

posted on October 19, 2015
8. ## Math

posted on October 23, 2013
9. ## English

intensive for #20

posted on May 14, 2013

dont know don't understand

posted on January 31, 2013
11. ## algebra

what does the star mean

posted on November 5, 2012
12. ## Chemistry

thanks

posted on May 30, 2012
13. ## chemistry

You're welcome (:

posted on May 29, 2012
14. ## Chemistry

How did you get that answer?

posted on May 29, 2012
15. ## chemistry

B. seawater

posted on May 29, 2012
16. ## Chemistry

112 grams

posted on January 18, 2012
17. ## Science

Another name for your windpipe would be the trachea

posted on October 11, 2011
18. ## world history

1. A.

posted on March 11, 2011
19. ## physics

Thank you!!!

posted on November 20, 2010
20. ## physics

I get 9.00621 x 10 ^-11 m^2/s but the computer says that is wrong. I used the equation, Diffusion rate = DA (concentration gradient) where A is area and D is what we are looking for.

posted on November 1, 2010
21. ## physics

Perfect! Since the density of lead is 11.3 x 10^3 kg/m^3 and the density of mercury is 13.6 x 10^3 kg/m^3, the answer is 0.831. Thanks much!

posted on October 30, 2010
22. ## physics

I figured this question out: F = (mass of the arm x change in velocity)/time So, ((0.701kg.)(4.78m/s-1.55m/s))/(0.00239s) = 947.376569 And shear stress is F/Area = (947.376569N)/((0.0635m)(0.0131m))

posted on October 26, 2010
23. ## physics

Much easier than I thought: Pressure = (1010 kg/m^3) x (1.51 m) x (9.8 m/s^2) = 14,945.98 Pa Thanks!

posted on October 26, 2010

Oh I am sorry! I wasn't focusing and kept putting complex! Thank you, Ms. Sue for all your help!

posted on September 21, 2010

Simple and complex subject I mean! Sorry! ^_^

posted on September 21, 2010
26. ## Geography

How does modern technology help geographers?

posted on August 4, 2010
27. ## MATH...somewhat urgent

2x+4y+1=0 y= 2-1/3x y-2x+2=0 3y-9x-1=0

posted on February 5, 2010
28. ## Physics

So it'd be C?

posted on November 6, 2009