Ashleigh
Most popular questions and responses by Ashleigh
Statistics
If the correlation coefficient is 0.790, what is the explained variation? A. 37.6% B. 62.4% C. 79% D. 21%
asked on December 11, 2011 
Social Studies
describe two ways some caribbean families preserve their cultural traditions
asked on October 20, 2009 
Algebra 2
The graph shows a probability distribution. Which probabilities are equal to 0.3? Select each correct answer. P(X≥3)
asked on October 20, 2016 
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
asked on September 24, 2013 
Chemistry
The gaseous product of a reaction is collected in a 25.0L 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?
asked on December 15, 2010 
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
asked on October 26, 2010 
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
asked on November 14, 2011 
Chemorganic, 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
asked on October 16, 2011 
Chemistry I
Determine the hydronium ion concentration in a solution that is 0.00018 M Ca(OH)2. Answer in units of M
asked on March 11, 2013 
physics
a lead bullet is placed in a pool of mercury. what fractional part of the volume of the bullet is submerged?
asked on October 30, 2010 
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
asked on September 3, 2014 
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
asked on November 9, 2009 
Math
A girl is three years older than her brother. If their combined age is 35 years, how old is each?
asked on October 22, 2013 
Math
Ace's grandfather is 3 years older than Ace's grandmother. Their combined age is 121 years. How old is each?
asked on October 23, 2013 
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
asked on October 26, 2010 
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
asked on November 20, 2010 
precalculus
6cos^2(x)5cos(x)6
asked on December 4, 2014 
physics
Glycerin in water diffuses along a horizontal column that has a crosssectional 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.
asked on November 1, 2010 
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
asked on December 8, 2008 
Chemistry
Express the concentration of a 2.0 M NaOH solution as a mass/volume percent.
asked on May 29, 2012 
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
asked on April 9, 2012 
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?
asked on November 1, 2010 
science
How many grams (to the nearest 0.01 g) of NH4Cl (Mm = 53.49 g/mol) must be added to 700. mL of 1.294M solution of NH3 in order to prepare a pH = 9.70 buffer? (pka of NH3 = 9.25)
asked on November 2, 2007 
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?
asked on September 2, 2014 
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
asked on June 26, 2012 
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?
asked on May 29, 2012 
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?
asked on April 15, 2013 
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
asked on November 8, 2010 
Math
A censustaker 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 censustaker. "Well, I'll tell you this:the product of their ages is 72, and the sum of their ages
asked on September 24, 2009 
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?
asked on November 8, 2010 
math
What is the improper fraction 61/7 written as a mixed number ?
asked on December 29, 2009 
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
asked on January 2, 2009 
Maths
Explain why a multiple of 80 is also a multiple of 8.
asked on January 23, 2017 
Physics
A 4person 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
asked on April 9, 2015 
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
asked on February 12, 2015 
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?
asked on December 1, 2014 
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?
asked on May 29, 2012 
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
asked on February 5, 2011 
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.
asked on January 12, 2007 
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
asked on November 12, 2011 
Math
I'm helping my daughter with Algebra homework and I've forgotten how to solve the following. x/212 = 3 + x Can someone help
asked on October 13, 2011 
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.
asked on June 28, 2010 
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!
asked on May 10, 2010 
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?
asked on November 4, 2009 
physical science
How far can a person run in 15 minutes if they run at an average speed of 16km/hr?
asked on January 24, 2008 
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?
asked on October 23, 2015 
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
asked on April 9, 2015 
english
his expression showed how highly he valued his own opinions and scored the view of the others. smug?
asked on December 4, 2012 
Science
How is the air motion in the eye of a hurricane similar to the air motion at a high pressure center?
asked on September 18, 2010 
4th grade 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?
asked on September 30, 2008 
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?
asked on February 18, 2016 
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
asked on October 12, 2014 
science
What are three methods scientists use to form scientific explainations ?
asked on October 11, 2011 
economics
according to the law of demand,when the price of an item goes up,the quality demanded?
asked on January 12, 2011 
6th grade
What is the simple and complex for this sentence. Making a bad grade on such an easy spelling test is such an embarrassment.
asked on September 21, 2010 
physical education
famous dancers or dances in relation to hip hop.
asked on April 23, 2009 
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?
asked on September 30, 2008 
Math B
Can some one please explain the set of real numbers as a field to me?
asked on September 6, 2008 
applied physics
if a DC motor uses a775 coulombs of charge in 15 seconds,how much current is produced
asked on May 27, 2008 
English
I need help to unscramble this word MEFHSKAIT
asked on February 14, 2008 
geography
i don't understand what an ethinic group is????
asked on August 29, 2007

Science
How much energy is needed to raise the tempreture of 2.0kg of aluminium by 30 degreese celcius
posted on November 30, 2017 
Math  Fractions
5625 pictures
posted on October 18, 2017 
Chemistry
6*10^39
posted on April 4, 2017 
Maths
21
posted on January 23, 2017 
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 
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 
sixth grade math
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 
Math
What about the grandfathers age??
posted on October 23, 2013 
English
intensive for #20
posted on May 14, 2013 
5th Grade Math
dont know don't understand
posted on January 31, 2013 
algebra
what does the star mean
posted on November 5, 2012 
Chemistry
thanks
posted on May 30, 2012 
chemistry
You're welcome (:
posted on May 29, 2012 
Chemistry
How did you get that answer?
posted on May 29, 2012 
chemistry
B. seawater
posted on May 29, 2012 
Chemistry
112 grams
posted on January 18, 2012 
Science
Another name for your windpipe would be the trachea
posted on October 11, 2011 
world history
1. A.
posted on March 11, 2011 
physics
Thank you!!!
posted on November 20, 2010 
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 
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 
physics
I figured this question out: F = (mass of the arm x change in velocity)/time So, ((0.701kg.)(4.78m/s1.55m/s))/(0.00239s) = 947.376569 And shear stress is F/Area = (947.376569N)/((0.0635m)(0.0131m))
posted on October 26, 2010 
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 
6th grade
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 
6th grade
Simple and complex subject I mean! Sorry! ^_^
posted on September 21, 2010 
Geography
How does modern technology help geographers?
posted on August 4, 2010 
MATH...somewhat urgent
2x+4y+1=0 y= 21/3x y2x+2=0 3y9x1=0
posted on February 5, 2010 
Physics
So it'd be C?
posted on November 6, 2009 
Math
I need help please ASAP
posted on September 24, 2009 
the big idea of energy
i don't know either and i have to include it in a level assessed task help me!!! i have to explain the iron and sulphur reaction using the Big Idea Of Energy.. Help me !!!
posted on April 14, 2009