Friday

January 30, 2015

January 30, 2015

Total # Posts: 589

**Chemistry**

A sample of nitrogen gas occupies 1.55 L at 27oC and 1 atm pressure. What will the volume be at -100oC and the same pressure?
*February 9, 2011*

**Calculus**

Correction: f(x)=ax^n
*February 9, 2011*

**Calculus**

Given a power function of the form f(x)=axn, with f(3)=20 and f(9)=1620, find n and a
*February 9, 2011*

**Calculus**

I meant to put x^7-7x^6
*February 9, 2011*

**physics**

The three ropes are tied to a small, very light ring. Two of the ropes are anchored to walls at right angles, and the third rope pulls as shown: F=85 N, q=54°. What is the magnitude of the tension force in the first rope
*January 31, 2011*

**History**

I need four topics to compare and contrast Machiavelli's The Prince and Castiglione's The Courtier. Thanks.
*January 29, 2011*

**Social studies**

What are the names of the nations in central america?
*January 24, 2011*

**calculus**

Thank you!
*January 24, 2011*

**calculus**

Factor completely x^3 - 5x^2 - x + 5
*January 24, 2011*

**trig/functions**

what does y=2 sin (x-pi/ .5) -1 look like on a graph with the 3 phases of the function?
*January 19, 2011*

**calculus**

Suppose that the sales at Borders bookstores went from 70 million dollars in 1989 to 415 million dollars in 1993. What is the continuous percent growth rate, per year, of sales?
*January 17, 2011*

**math**

Using the formula for the area of a triangle, A = 1/2 bh, find the area of this triangle pictured. The base is 2x + 16 and the height is 4x. I just don't know how to work the problem.
*January 17, 2011*

**5th grade math **

hey i dont like math at all so i was wondering if you can do this below CONSTRUCTING A GRAPH FROM LANDMARKS mode:15 minimum:5 median:10 maximum:20 and i dont even know where to start
*January 4, 2011*

**Chemistry**

its 112g because if you need a total of 200 and they already tell you that the co2 is 88, then subtract 88 from 200 to get 112
*December 18, 2010*

**Life Sciene**

How would the cell theory be affected if scientists could make living cells from carbon, oxygen, and other elements found on earth.
*December 15, 2010*

**fractions**

Mr.shafier has been teaching school for 10 years.For 6 of those years he taught 8th grade.what fraction represents the time Mr.shafier has not been teaching 8th grade?I knoe the answere is 2 5ths. but how do i show work?HELP!!!!!!!!!!!!!!!
*December 12, 2010*

**physics**

A 250 kg car starting from rest is pushed 30m. When the car reaches 30m, it’s traveling at a speed of 12m/s and it encounters 52N of friction. What is the acceleration of the car and what is the force of the push on the car?
*December 1, 2010*

**math**

did you know when you try to find the least commen multiple of 3 numbers you have to divide by two after you get your answer my class (ms.lott in texas) told us that for some reason its doubling the number so always divide by two once you have crossed out the commen numbers ...
*November 28, 2010*

**Chemistry**

help please! At 2200°C, K = 0.050 for the following reaction. N2(g) + O2(g) 2 NO(g) What is the partial pressure of NO in equilibrium with N2 and O2 that were placed in a flask at initial pressures of 0.75 atm and 0.30 atm, respectively?
*November 18, 2010*

**Chemistry**

help please! At 5000 K and 1.000 atm, 83.00% of the oxygen molecules in a sample have dissociated to atomic oxygen. At what pressure will 99.0% of the molecules dissociate at this temperature?
*November 17, 2010*

**geometry**

What does it mean by a line being unique?
*November 16, 2010*

**1st grade**

I ran past the dog and the cat who were fighting
*November 8, 2010*

**ap calculus**

A particle moves along a straight line with displacement s(t), velocity v(t), and acceleration a(t). Show that a(t) = v(t) dv/ds.
*November 4, 2010*

**math**

If i need 2-1/4 cups of flour for 12 people then how much do i need for 10 people?
*October 28, 2010*

**college english**

Nothing comes up with that search.
*October 24, 2010*

**college english**

I need help figuring out what this poem means. Thanks Analysis of a Sound in the Middle of the Night by Nicole Brossard time free-falling in my arms, I await night the midpoint of midnight life stretches out palm tree silence unrecognizable in the folds of representation I ...
*October 24, 2010*

**physics**

A merry-go-round in the park has a radius of 1.8 m and a rotational inertia of 900kgm^2. A child pushes the merry-go-round with a constant force of 80 N applied at the edges and parallel to the edge. A frictional torque of 12 Nm acts at the axle of the merry-go-round. a. what ...
*October 17, 2010*

**Chemistry **

What mass of electrons would be required to just neutralize the charge of 3.9 grams of protons?
*October 14, 2010*

**physics**

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
*October 6, 2010*

**physics**

what does hi mean ?
*October 6, 2010*

**physics**

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
*October 6, 2010*

**physics**

If you throw a ball straight upward at a speed of 11 m/s, How long will it take to return to its starting point?
*October 6, 2010*

**Chemistry **

A sulfur-containing compound is decomposed and the products are collected over water according to this equation: SxOy -> SO2(g) + O2(g) The mole fractions for the products are as follows: SO2 (.8) and O2 (.2) What is the empirical formula for the original compound?
*October 4, 2010*

**Calculus ll - Improper Integrals**

Oh! I understand now. The "total area" part kind of threw me off. Thank you so much!
*October 2, 2010*

**Calculus ll - Improper Integrals**

Find the area of the curve y = 1/(x^3) from x = 1 to x = t and evaluate it for t = 10, 100, and 1000. Then find the the total area under this curve for x ≥ 1. I'm not sure how to do the last part of question ("find the the total area under this curve for x &#...
*October 2, 2010*

**Chemistry**

Write out the general equation: NaCl(aq) + AgNO3(aq) ---> AgCl(s) + NaNO3(aq) Write out the total ionic equation. If it's a strong electrolyte, it is written as ions. If not, it's written as a molecule. NaCl, AgNO3, and NaNO3 are strong electrolytes, so they're ...
*October 2, 2010*

**statistics**

did you ever find this answer?
*September 29, 2010*

**Physics**

Determine the magnitude and direction of the displacement if a man walks 32.5 km 45° north of east, and then walks due east 19.5 km.
*September 28, 2010*

**science**

how is gravity related to falling objects
*September 27, 2010*

**6th grade**

Im having trouble with my Reading.If any of you have any help.with me please do bc i hate Reading and it is very hard for me.I'm in all honors.PLEASE HELP!!!
*September 9, 2010*

**MATH**

the answer is correct it would be 11 hotdogs
*September 5, 2010*

**math**

LOL i shoud konw this im in 10 grade (:
*September 1, 2010*

**math**

rebecca has 6 pencils
*August 19, 2010*

**math**

2.4
*August 9, 2010*

**Math **

I am very confused with rounding off numbers. How do you know how many zeroes shall you put when you retain?
*July 22, 2010*

**Communication and Gender Studies**

Yea, aren't all the questions teachers ask of us!
*July 5, 2010*

**Communication and Gender Studies**

That's the question. I am not sure. I think it depends upon the individual. What do you think?
*July 5, 2010*

**Communication and Gender Studies**

Is it possible to build both trust and intimacy more easily with both males and females on the Net? Why or why not?
*July 5, 2010*

**Communication and Gender Studies**

How does the English language that is spoken in the US accomplish how we portray men as serious? How do we describe them by their activities and accomplishments, particularly compared to language about women? What are the sorts of nicknames that we have for men, or the sort of...
*June 24, 2010*

**Elective Child Daycare Management**

1. Which one of the following statements uses language best to present a clear picture of a child's behavior? A. Leslie ran to the door, greeting his mother with open arms. B. Carolyn carried her books to the table. C. Marshall handed the truck to Jacob. D. Beryl chose a ...
*June 18, 2010*

**English**

The following is an example of a metaphor: My brother is as slow as a snail in the morning. true or false.
*June 11, 2010*

**English**

The following is an example of a simile: My sister is as funny as a clown. Would it be true or false.
*June 11, 2010*

**GeOgRaPhY**

Scientists believe that the Great Rift Valley was created by 1 volcanic eruptions. 2 tectonic forces. 3 ocean flooding. 4 receding glaciers. I think the answers either 1 or 2 which one is right?
*May 18, 2010*

**Chemistry**

Two moles of a nonelectrolyte solute are dissolved in 1 kg of an unknown solvent. The solution freezes at 7.8 degrees Celsius below its normal freezing point. What is the molal freezing point constant of the unknown solvent? What is your prediction for the identity of the ...
*May 17, 2010*

**World History/Geography**

thanx
*May 14, 2010*

**World History/Geography**

What are the Major imports and exports of New Zealand?
*May 14, 2010*

**Social Studies**

South America lies in the blank Hemisphere and the blank Hemisphere at latitude blank and the blank Pole at latitude blank
*May 14, 2010*

**English**

Caesar disregards the omens for all of the following reasons except A. he does not trust the augurers. B. he does not want to appear cowardly. C. he feels fate is inescapable. D. he feels invincible. help!
*May 3, 2010*

**English**

is it c?
*May 3, 2010*

**English**

a. ismene: antigone, i am so afraid for you! antigone: you need not be; you have yourself to consider, after all. ismene: but no one must hear of this, you must tell no one! i will keep it a secret, i promise! antigone: oh tell it! tell everyone! think how theyll hate you when...
*May 3, 2010*

**English**

yes but like 2 weeks ago so i kinda dont remember it. should i type out the sections of the play the 4 possible answers are from? i found them
*May 3, 2010*

**English**

thats all they gave me in the question
*May 3, 2010*

**English**

Which is an example of verbal irony as spoken by Antigone? a. "You have yourself to consider, after all." b. "You must decide whether you will help me or not." c. ". . . and if I must die, / I say that this crime is holy . . ." d. ". . . if ...
*May 3, 2010*

**8th grade**

To find a rate, you divide. 78/3=
*April 14, 2010*

**English**

1. You need to change it to "To love you and to be loved by you is my happiness." 2. does not make sense, use one instead 3. incorrect 4. correct
*April 14, 2010*

**sentences**

they've = they have...something more than one person has already done/completed...i'd be happy to check your sentence after you try to come up with one
*April 14, 2010*

**math**

You actually don't need to do all of the work Jesse has said. I'll show you a shortcut. Take the denominator (bottom part of a fraction) and divide it by your whole number. Then multiply that by the numerator (top part of a fraction). You can do it really fast in your ...
*April 13, 2010*

**math**

You left out information. How many minutes each to read and record.
*April 13, 2010*

**9th grade acc. algebra**

how do you do this? this is the full question and all info: "A line with a slope of -3 passes through the point (k,4). Find the y-intercept of the line in terms of k." I would like to know how to do this along with the answer so i can know im doing it right please!!
*April 6, 2010*

**vocabulary**

accountable would be F. responsible
*April 6, 2010*

**4th grade math**

10/2
*March 23, 2010*

**math**

x^2-49 Can you help explain why this example is a diffence of two squares
*March 17, 2010*

**math**

2x^2+7x+3
*March 14, 2010*

**math**

Yes. Because if you add the two numbers on to the table the number woudn't change one bit. That is why I think it would stay the same
*March 9, 2010*

**4th grade**

Of the first graders who were asked,1/6 like math best,2/3 like reading best, and 12 like science best.How many first graders were asked their favorite subject?
*March 3, 2010*

**language arts**

in a riddle, a girl stands on one end of a newspaper spread flat on the floor. her brother stands on the other end. neither can touch the other person. how come? please help me!
*March 3, 2010*

**Algebra**

The length of a rectangular swimming pool is 2x-1 meters and the width is x+2 meters. Write a polynomial A(x) that represents the area. Find A(5).
*February 14, 2010*

**science**

a. if i use 100N of force and move 3 meters, how much work is this? b. if it takes 90 seconds to get there, how much power did i exert?
*February 4, 2010*

**geometry**

jane is making a building . how many croners does each combination of figures have
*January 26, 2010*

**S.S**

No, it's not a assignment, I would just like to know about it. I love history
*January 25, 2010*

**S.S**

I want some info on American Revolution, just little bit, No links please
*January 25, 2010*

**S.S**

ty bobpursley, I love more info
*January 25, 2010*

**S.S**

what is the renaissance? No links please
*January 25, 2010*

**math i need help please**

It is d)81. What number can be divided into 9 to get a positive 9, obviously 81. -81 would give you -9.
*January 25, 2010*

**3 rd grade math**

That is not true 3 * 1 = 3
*January 25, 2010*

**Communication Studies**

Have the use of war metaphors gone too far? More specifically, does it matter? that is, do these metaphors really influence how people think and act about movies, sports, politics and "real" wars?
*January 25, 2010*

**organic chem!**

thermal heating takes place in different forms of kinesthetic energy.
*January 24, 2010*

**science**

d=rt or Distance=rate x time
*January 24, 2010*

**trig**

Solve the equation by multiplying, adding, dividing, and subtracting where neccessary. Keep in mind your constants and like terms. Also remember, identity is another way of saying "two sides of an equation that are equal to each other". For example, 2x+0=2x would be ...
*January 24, 2010*

**Trig**

Try checking your graph. Accuracy when graphing a coordinate is vital.
*January 24, 2010*

**Math**

I don't even see your x in the equation that you provided. Check the question again and then use the coordinate (4, 2) to write an equation in point-slope form... y – y1 = m(x – x1)
*January 24, 2010*

**spanish**

you must be mistaking "La Piz" for the word "Lapiz". "El Lapiz" means the pencil.
*January 24, 2010*

**Geometry**

If the length of one base of a trapezoid is 5, the length of the other base is 2x + 7, and the length of the midsegment is 6x – 24, what is the value of x? Show equations and all work that leads to your answer.
*January 22, 2010*

**8th grade**

How do you do (3x-4)^2??? This is multiplying polynomials...
*January 20, 2010*

**11th grade**

If the coefficient of kinetic friction between a 30 kg crate and the floor is 0.35, what horizontal force is required to move the crate at a steady speed across teh floor? wHAT HORIZONTAL FORCE IS REQUIRED IF MUK IS ZERO?
*January 19, 2010*

**MATH GRADE 10******

Scott, Arif, and Diane run a small delivery company. For thier business, they use licensed two-way radios with a 20 km range. Scott is at their office which they have marked as the origin on their map of the town. Arif is dropping off a package at (-8, 16) while Diane is ...
*December 25, 2009*

**math grade 10 mathhh**

OMGGG THANK YOU SOO MUCH!!!!!!!! :):):):):):)
*December 23, 2009*

**math grade 10 mathhh**

A map shows a main gas pipeline running straight from A(45,60) to B(65,40) a) Is the point C(63,54) on the branch pipeline? Explain your reasoning b) What is the shortest route for connecting point C to the main pipeline.Explain **OMGGGG PLZZZ HELPPP, THANK YOUUUUUU!!!!!!!!!!!
*December 23, 2009*

**grade 10 math- slope/midpoint/length formulas **

A map shows a main gas pipeline running straight from A(45,60) to B(65,40) a) Is the point C(63,54) on the branch pipeline? Explain your reasoning b) What is the shortest route for connecting point C to the main pipeline.Explain **OMGGGG PLZZZ HELPPP, THANK YOUUUUUU!!!!!!!!!!!
*December 23, 2009*

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