Friday

July 29, 2016
Total # Posts: 127

**chemistry **

I think it's: aluminum + iron(III) oxide --> iron + aluminum oxide Fe2O3 + 2Al --> Al2O3 +2 Fe
*December 5, 2010*

**Chemistry**

1) The structure of graphite is very unlike any other substances. It is composed of sheets of carbon atoms, and each of these is bonded to only three other atoms. This leaves the fourth valence electron of the carbon atom delocalized, which means it is free to move between the...
*December 5, 2010*

**Physics**

A man uses a pulley arrangement to lift a heavy crate.He applies a force that is one-fourth the weight of the crate, but moves the rope a distance four times the height that the create is lifted. Is the work done by the man greater than, equal to, or less than the work done by...
*November 14, 2010*

**Physics**

A 3.0 kg block being pulled across a table by a horizontal force of 80 N also experiences a frictional force of 5 N. What is the acceleration of the block?
*July 14, 2010*

**geometry**

i need to find the area of the trapezoid 8cm,7cm,3cm,45degrees
*May 27, 2010*

**4th grade math**

wat is an EG not egg but EG pattern?
*May 9, 2010*

**9th grade**

What are the similarities of ozone depletion and uv light
*March 8, 2010*

**Algebra**

Thank you :D That really cleared it up! I never had anyone explain that concept so well before.
*October 28, 2009*

**Algebra**

I had to solve the function g of f where f is x^2+1 and g is sq. root of x. I wrote this out as the sq. root of x^2+1. The ^2 and the sq. root canceled each other out, so I was left with x + sq. root of 1. But my book got sq. root of x^2+1. Was the further reducing I did ...
*October 28, 2009*

**Algebra**

I distributed 3x^2+x-10=f(x) to find the zeroes. My book's answer was (3x-5)(x+2). When I distributed this to make sure I got the original function, I got 3x^2-x-10. Is this still an acceptable way to factor it even though the x is negative instead of positive as it should...
*October 25, 2009*

**Algebra for Reiny/Bob**

The way my book has it is (1/2x^3)-x. Sorry for the confusion
*October 25, 2009*

**Algebra**

How do you factor 1/2x^3-x so that the zeroes can be found? Thank you-Adriana
*October 24, 2009*

**math**

how do you ger the square root
*September 16, 2009*

**science**

list the bodies of water that collects rain when it falls?
*May 4, 2009*

**geography**

what is the capital of burkina faso?
*March 16, 2009*

**1st grade**

breakfast is served between 6:30am and 10:30am
*March 13, 2009*

**Math (not specific knowledge, just research)**

For math class, we are planning an indoor carnival. We need to figure out the size of each exhibit and vendor, and make sure all of them fit into the space. We can choose any large indoor space we can think of. I did some research online and chose the Pennsylvania Convention ...
*March 11, 2009*

**criminal justice**

Describe how criminal resposability can be limited
*March 1, 2009*

**physics**

A tennis ball has a velocity of 25 m/s and a mass of 57.5 g. After the ball hits a tennis racket, the velocity becomes twice that of the original speed and goes in the opposite direction. What is the force between the ball and the racket if the time that they interact is 0.07 ...
*October 19, 2008*

**Math**

So p = 3. I understand now. Thank you!
*October 11, 2008*

**Math**

How would you go about solving this one, though: 3p - 8= 13 - 4p Would you subtract the 13 from the 8 first and then add 4p to the 3p?
*October 11, 2008*

**Math**

I need help on how to solve equations with variables on both sides. 1. 30=8 - 2x 2. 98 - 4b= -11b 3. 3p - 8= 13 - 4p 4. 9 - 2y/7 = y 5. 1/3(12 - 6x) = 4 - 2x
*October 11, 2008*

**Science**

A scientist is trying to discover a new treatment to stop cancer cells from dividing. In the cancer cells, which of these processes will stop if the treatment is successful?
*September 14, 2008*

**History**

How did the Constitution address the failures of the Articles of Confederation?
*December 10, 2007*

**Reading**

beds of smelly animals - possesive rhyme for that?! stumped
*December 4, 2007*

**MGMT640**

Given the following information, calculate the return on equity for Chaus, Inc. Return on sales = 5% Total asset turnover = 2 Debt ratio = .73
*November 15, 2007*

**MATH**

how do you make a circle graph?what are the steps?i am a grade 7 student,I need help. Thanks
*October 29, 2007*