Friday

February 27, 2015

February 27, 2015

Total # Posts: 356

**chemistry**

Put the following compounds in order of INCREASING oxidation number of N: N2H4, NO3-1, N2, NH3 ?
*February 21, 2015*

**Physics **

A car traveling 85km/h slows down at a constant 0.52m/s2 just by "letting up on the gas." Calculate the distance the car coasts before it stops.
*February 8, 2015*

**Math**

The speed of sound in air at sea level at 32 degrees Fahrenheit is 1088 ft/s. If that represents only 22.04% of the speed of sound in ice-cold water, what is the speed of sound in ice-cold water, to the nearest whole number? what i did: 22.04/100 = 32/x i set up this ...
*January 16, 2015*

**Math**

Estimate 12 1/2% of 57
*January 16, 2015*

**MATH**

ARE THE FOLLOWING EQUATIONS INVERSES? y=x^4-7 and y=∜ x+7
*November 19, 2014*

**World History**

The Mongols have a terrible reputation in history as pillagers who destroyed all that met their path. How does this depiction of the Mongols compare with the same people who brought the Pax Mongolia? help please, I don't get it. I have to do this for History, But I don'...
*November 9, 2014*

**prod and oper management**

Hahn Manufacturing purchases a key component of one of its products from a local supplier. The current purchase price is $1,500 per unit. Efforts to standardize parts succeeded to the point that this same component can now be used in five different products. Annual com- ponent...
*September 6, 2014*

**chemistry **

Flask A contains 100 milliliters of a solution with a pH of 5. After you add 100 milliliters of a solution from Flask B, the pH rises to 7. What was the pH of the solution in Flask B?
*September 5, 2014*

**math**

Simplify the numerical expression below 25-4×5
*September 3, 2014*

**Basic Physics**

I don't understand how to work this problem out: Find x-component of vector a ⃗ = (7.0m/s 2 , - y-direction) Please help
*July 9, 2014*

**social studies**

so i have to do a poster on the human characteristics of south america and one of the catagories is goverment systems
*May 1, 2014*

**math**

The length of a rectangle is 3b + 2 and the width is 9b + 6. What is the ratio of its length to its width?
*April 28, 2014*

**Algebra 1**

Why does your body go into shock when you jump in cold water
*March 11, 2014*

**LA check answers?**

D B B B C C A
*March 6, 2014*

**Algebra Readiness**

Sally bakes two cakes, a square and a circle. The length of the side of the square cake is 8 inches. Find the area and the perimeter of the cake heart.
*February 16, 2014*

**Math**

3/4
*February 5, 2014*

**science **

hi I wanna know the safety precautions of using of lead
*January 25, 2014*

**goverment**

“The President of the United States would be liable to be impeached, tried, and, upon conviction of treason, bribery, or other high crimes or misdemeanors, removed from office . . . The person of the king of Great Britain is sacred and inviolable; there is no ...
*January 20, 2014*

**reading**

the past three days have been quiet and enjoyable. What is the subject?
*January 8, 2014*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 30, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 30, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 29, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 28, 2013*

**Probability and Statistics**

The proportion of adults living in a small town who are college graduates is estimated to be p = 0.6. To test this hypothesis, a random sample of 15 adults is selected. If the number of college graduates in the sample is anywhere from 6 to 12, we shall not reject the null ...
*November 27, 2013*

**Social Studies**

yes I understand her interpretation and I apologize for the inconvenience. I have figured it out now! Thank you so much Ms. Sue! I really appreciate your help! :)
*November 22, 2013*

**Social Studies**

I am so sorry about posting again but I still don't understand the social impact the airplane made at the time when it was invented...
*November 22, 2013*

**Social studies**

Please help quick!
*November 19, 2013*

**Social studies**

Ok Ms. Sue but could you also tell me what the impact was at the time?
*November 19, 2013*

**Social studies**

(respost) I chose the Airplane and I know that it was invented by the Wright brothers etc. But what I don't know what to write a paragraph on is "Describe the social impact the invention had on society". Please help! I really stuck here :? yes, thank you so much ...
*November 19, 2013*

**Socials**

yes, thank you so much Ms. Sue. But the question is stated in past tense which I assume means what the impact was on society at the time, that's what I don't get. Yes, they invented the plane and the ability for mankind to fly but I don't know the impact or even ...
*November 18, 2013*

**Socials**

For socials, we have to do a project on an invention during the industrial revolution time period. I chose the Airplane and I know that it was invented by the Wright brothers etc. But what I don't know what to write a paragraph on is "Describe the social impact the ...
*November 18, 2013*

**science**

Geosphere it was on my test so I know the answer.
*November 10, 2013*

**Probability and Satistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 2, 2013*

**Probability and Statistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 2, 2013*

**Probability and Statistics**

Random Variables X and Y follow a joint distribution: f(x,y)=(6-x-y)/8 if 0<x<2, 2<y<4 and 0, else Find P(1<Y<3|X=1) I first got the marginal distribution for x and got (3-x)/4 (Integrated from 2 to 4)and then got the conditional dist and got (5-y)/4 and then...
*November 1, 2013*

**Chemistry**

A sample of bromine containing isotopes bromine-79 and bromine-81 was analyses in a mass spectrometer. How many peaks corresponding to Br^+ were recorded? A)1 B)2 C)3 D)4 How many peaks corresponding to Br2^+ Were recorded? A)1. B)2. C)3. D)4
*October 18, 2013*

**geometry **

Jk=6r,kl=3r and jl = 27
*October 7, 2013*

**Social Studies**

Thank you! Do they all work? Because I don't think they all answer the questions.. lol
*October 5, 2013*

**Social Studies**

ok, here are my answers, I just don't think the actually answered the questions. It would be amazing if you could help me add a few things and pointers. Thank you Ms. Sue!: 1. The Bishop shows mercy for Valjean and used reason, and thus lies for him so he won't get ...
*October 5, 2013*

**Social Studies**

We watched the Les Miserables movie and were asked to answer a few questions afterwards.I am just unsure if my answers are correct or not for the following questions... 1. How did the Bishop's lie to the police to take cover for Jean Valjean exemplify the thoughts of ...
*October 5, 2013*

**physics**

when maggie applies the brakes of her car, the car slows uniformly from14.3 m/s to 0 m/s in 2.18 s. How far ahead of the stop sign must she apply her brakes in order to stop at the sign? answer in m
*September 30, 2013*

**physics**

when maggie applies the brakes of her car, the car slows uniformly from14.3 m/s to 0 m/s in 2.18 s. How far ahead of the stop sign must she apply her brakes in order to stop at the sign? answer in m
*September 30, 2013*

**Probability and Statistics (Continuation)**

Assume 10% of the engines manufactured on an assembly line are defective. If engines are randomly selected one at a time and tested. What is the probability that the third nondefective engine will be found a)on the fifth trial? b) on or before the fifth trial? MY answers: a) P...
*September 29, 2013*

**Probability and Statistics**

Assume 10% of the engines manufactured on an assembly line are defective. If engines are randomly selected one at a time and tested. What is the probability that the third nondefective engine will be found a)on the fifth trial? b) on or before the fifth trial? MY answers: a) P...
*September 29, 2013*

**Probability and Statistics**

An oil prospector will drill a succession of holes in a given area to find a productive well. The probability that he is successful on a given trial is 0.2. a) What's the probability that that the third hole drilled is the first to yield a productive well? b) If the ...
*September 29, 2013*

**Social studies**

Thank you so much Ms. Sue! But i still don't quite understand the civil rights part..
*September 28, 2013*

**Social studies**

1. A description of life in 17th century England according to a member of the roundheads. 2. The roundheads views on civil rights. Please help quick! (Ms. Sue)
*September 28, 2013*

**French**

The following remarks were heard in a French restaurant. Complete them with the appropriate definite, indefinite, or partitive article. 1. Est ce que vous prenez______ vin ou ______ avec votre repas? 2. J'aime beaucoup ______ poisson. Je vais commander ______ sole! 3.Est-...
*September 25, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 22, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 20, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 19, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 19, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 18, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 18, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 17, 2013*

**Fluid Mechanics**

Oil (sp. gr.= 0.8) flows smoothly through the circular reducing section shown at 3 ft^3/s. If the entering and leaving velocity profiles are uniform, estimate the force which must be applied to the reducer to hold it in place. When Fluid is entering the pipe: P= 50 psig ...
*September 17, 2013*

**physics**

A police car is traveling at a velocity of 19.0 m/s due north, when a car zooms by at a constant velocity of 49.0 m/s due north. After a reaction time 0.600 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the reaction time, how long ...
*September 15, 2013*

**physics**

A pellet gun is fired straight downward from the edge of a cliff that is 13.4 m above the ground. The pellet strikes the ground with a speed of 26.1 m/s. How far above the cliff edge would the pellet have gone had the gun been fired straight upward?
*September 15, 2013*

**physics**

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 5.25 m/s. The car is a distance d away. The bear is 39.8 m behind the tourist and running at 7.36 m/s. The tourist reaches the car safely. What is the maximum possible value for d?
*September 15, 2013*

**Physics**

A rocket is fired at a speed of 96.0 m/s from ground level, at an angle of 35.0 ° above the horizontal. The rocket is fired toward an 15.2-m high wall, which is located 32.0 m away. The rocket attains its launch speed in a negligibly short period of time, after which its ...
*September 15, 2013*

**Physics**

A tennis ball is struck and departs from the racket horizontally with a speed of 29.1 m/s. The ball hits the court at a horizontal distance of 19.0 from the racket. How far above the court is the tennis ball when it leaves the racket?
*September 15, 2013*

**Fluid Mechanics**

Water flows into a cylindrical tank through pipe 1 at a rate of 25 ft/s and leaves through pipe 2 at 10 ft/s and through pipe 3 at 12 ft/s. Pipe 4 is an open air vent. Internal diameters of the pipes are: D1=3 in, D2= 2 in, D3=2.5 in, D4=2 in. Calculate a) dh/dt and b) the ...
*September 10, 2013*

**Material science/ Mechanics**

A cube polymer matrix is subjected to elastic deformation in compression by 10 N applied force. The cube is deformed by 20% of its original shape. The cube side has a length of 1 m. If you assume that the polymer has the intrinsic properties of rubber, find the storage shear ...
*September 8, 2013*

**algebra**

Solve the formula for the variable given.then use the info to find the value of variable. S=πr(h+k) Find h if r=2,k=3,and S=50 I really don't know how to answer this kind of questions :(
*August 22, 2013*

**algebra **

Solve the formula for the variable given.Then use the given information to find the value of the variable. A=2πrw Find r if w=4ft And A=120ft square. Please someone help me with this!!!
*August 22, 2013*

**math**

caca
*August 13, 2013*

**Psychology Help Please**

When rethinking a problem why do people do a social comparison? What school of thought did client centered therapy come from? What is the biology of love based on? If a person sees the glass half full, what type of outlook do they have? Human sexuality is influenced by three ...
*June 6, 2013*

**math**

Logarithm 3^3x+1=3^5x-2 3^3x+1-3^5x-2=0 Log(3^3x+1-3^5x-2)=log0 Please explain to me why is the last step is wrong
*May 22, 2013*

**math**

How would I solve this: Mr. Merrill has 3 times as many nickels as dimes. The coins have a total of $1.50. How many of each coin does he have?
*April 20, 2013*

**Bio-Micro Help Please!!!**

1) why is it important from a clinical standpoint to perform a B-lactamase test? Explain! 2) if the B-lactamase test was positive, what might you do to determine a viable treatment option? 3) why might Augmentin (amoxicillin clavulanate) be prescribed for an individual that ...
*April 18, 2013*

**Algerba 1**

Thanks
*April 11, 2013*

**Algerba 1**

it needs to be written in scientific notation.
*April 11, 2013*

**Algerba 1**

Write in Scientific Notation 1. (3X10to the tenth) (7X10to the -4th) 2. (5X10to the 4th)to the second Thanks so much!
*April 11, 2013*

**math**

3xsquared + 27 = 5 3xsquared -5x = -3xsquared + 6 SOLVE
*April 9, 2013*

**math **

xsquared + 8x- 10 =1
*April 9, 2013*

**Math probability**

Assume that 60% of community college students are female. 1) if we pick 100 students at random justify why we can or cannot model this using a normal model. 2) find the probability that between 50 and 70 of the 100 students selected are female. 3) fidn Q1 and Q3 for the middle...
*April 8, 2013*

**Stat Help Please**

A linear model can be used to describe the relationship between fuel economy(mpg) and horsepower (hp) for certain automobile models. mpg=46.868-0.0838 hp R^2=75.5% 1) Give the symbol and the value of the correlation coefficient.
*March 12, 2013*

**Stat Help Please**

In what case is a control group receiving a placebo treatment not useful? what is the useful treatment for the control group?
*March 12, 2013*

**Microbiology**

I need help urgently please.
*March 11, 2013*

**Microbiology**

Calculate the # of phage present in the original sample. Report the dilution factor used and show calculation. 171*1000=171000 PFU/mL Is this a lytic or lysogenic phage? explain.
*March 11, 2013*

**Microbiology**

What are the original color of these agar plates? Eosine Methylene Blue Mannitol Salt Agar Phenylethyl Alcohol Agar Mueller Hinton Agar
*March 11, 2013*

**Stat Help Please**

1)A runner's finishing time translated into a z-score of z=2.6 Explain in words whether the runner performed excellently or poorly? 2)Yearly stock returns on India's Sensex Index are well described by a Normal model with a mean of 18.36% and a standard deviation of 14....
*March 10, 2013*

**Sociology**

Discuss the relationship among gender, ethnicity, and social class. How do sociologists see the connections and stratification among these areas in our society?
*March 6, 2013*

**Sociology**

Discuss the causes of social change.
*March 6, 2013*

**Math Helpppp**

The College Board, which are administered each year to many thousands of high school students, are scored so as to yield a mean of 550 and a standard deviation of 100. these scores are close to being normally distributed. what percentage of the scores can be expected to ...
*February 23, 2013*

**Calculus **

R(x)= sqr5/x^6 R'(x)
*February 21, 2013*

**Precalculus**

If (f º g)(3) = 7, then f(x) and g(x) could be: Select one: a. f(x) = 3x2 – 10x + 4, g(x) = x + 2 b. f(x) = 2x – 3, g(x) = x2 – 4 c. f(x) = 3x + 1, g(x) = x – 3 d. f(x) = x2, g(x) = x – 2
*February 10, 2013*

**Psychology Help Please!!!**

Thank you so much!
*February 1, 2013*

**Psychology Help Please!!!**

1)Activities such as cooing, thumb sucking, eating bring satisfaction. 2)Child response to some parental demands for such as bowel and bladder. 3)Child experiences the Oedipus complex. 4)Development continues, but sexual urges are relatively quiet. 5)Child shakes off old ...
*February 1, 2013*

**posibility**

Three men and three women are waiting to be interviewed for jobs. If they are all selected in random order find the probability of each event. No man will be interviewed until at least two women have been interviewed.
*November 16, 2012*

**math**

Three men and three women are waiting to be interviewed for jobs. If they are all selected in random order find the probability of each event. No man will be interviewed until at least two women have been interviewed.
*November 16, 2012*

**social studies**

rain shower
*November 16, 2012*

**Math**

An 8 meters bamboo pole is leaning against a coconut tree. The foot of the pole is 3 meters from the base of the tree. What angle does the pole make with the tree if the pole reaches up to the top of the tree? HELP PLEASE!
*October 15, 2012*

**math**

3/7
*October 10, 2012*

**History**

the indians felt like poop
*October 10, 2012*

**chemistry**

do not know firgue it out im in the 6th grade
*October 10, 2012*

**6th grade science**

who invented the telescope
*October 9, 2012*

**assessing development cognitive language observat**

keep letting him practice them
*September 28, 2012*

**math**

Alottery has 100 tickerts which are placed in a barrel . Three tickets are drawn at random from the barrel to decide 3 prizes . If john has 3 tickets in the lottery , determine his probability of winning : A.first prize. B.first and second prize. C.all 3 prizes. D.none of the ...
*September 24, 2012*

**Calculus Help**

It's x squared. lim (ax^2+b)/(cx+d) x-->infinity
*September 18, 2012*