Wednesday

October 1, 2014

October 1, 2014

Total # Posts: 36

**Chemisty**

a) Calculate the number of moles in 17.8 g of the antacid magnesium hydroxide, Mg(OH)2. b) A 0.850-mole sample of nitrous oxide, a gas used as an anesthetic by dentists, has a volume of 20.46 L at 123°C and 1.35 atm. What would be its volume at 468°C and 1.35 atm?
*September 15, 2014*

**Math**

y=-x x+y=3
*April 7, 2014*

**math**

Noah built a fenced dog run that is 8 yards long and 6 yards wide.He placed post at every corner and every yard along the length and width of the run.How many post did he use?
*September 23, 2013*

**Physics**

A 51.9-g golf ball is driven from the tee with an initial speed of 50.8 m/s and rises to a height of 28.4 m. (a) Neglect air resistance and determine the kinetic energy of the ball at its highest point. (b) What is its speed when it is 6.08 m below its highest point?
*July 1, 2013*

**psych statistics**

Martha believes that a relaxation technique involving visualization will help people with mild insomnia fall asleep faster. She randomly selects a sample of 20 participants from a group of mild insomnia patients and randomly assigns 10 to receive visualization therapy. The ...
*June 30, 2013*

**Physics**

A planet has a mass of 6.22 × 1023 kg and a radius of 2.51 × 106 m. (a) What is the acceleration due to gravity on this planet? (b) How much would a 77.7-kg person weigh on this planet?
*June 18, 2013*

**Physics**

so, (south)^2 + (east)^2 = (southeast)^2 (11.5)^2 + (18.3)^2 = (resultant)^2 Resultant = 21.6 km/s Used different numbers but it works
*June 18, 2013*

**science**

how do i calculate the average speed and velocity on a graph??
*January 23, 2013*

**math**

ftrttru\ ]
*October 20, 2012*

**science**

a student tests if the width of a pipe affects pressure of the flow of water. What is the independent variable and the dependent variable?
*August 29, 2012*

**Precalc HELP PLEASE**

thank you, what does RS and LS stand for?
*January 23, 2012*

**Precalc HELP PLEASE**

verify 1-sintheta * costheta * tantheta = cos^2theta
*January 23, 2012*

**precalc HELP PLEASE**

for all values of theta where 0degrees<theta<360degrees 2sin^2 theta -3sintheta = -1
*January 23, 2012*

**4 grade math**

how do you write the number 12,346,823 in expanded form
*May 30, 2011*

**World cultures**

What are the five main regions of Africa? I looked it up but, all of them say south, north, central, west, and east Africa
*February 21, 2011*

**business**

1. Aaron Nance is a freshman in college who has not yet decided on his major. He is thinking about majoring in operations management and is concerned about job opportunities in this field. Which of the following statements about jobs for operations management majors is most ...
*May 11, 2010*

**math**

HISTORY TEST You take a history test that has 100 regular points and 8 bonus points. You get a score of 91, which includes 4 bonus points. Let x represent the score you would have without the bonus points. Which equation represents this solution? Solve the equation.
*September 27, 2009*

**English**

C) Quantum mechanics is more important to the history of science than previous scientific theories.
*May 7, 2009*

**essay writing**

Are you supposed to write a fictional essay about this?
*February 22, 2009*

**Thanks! :-)**

:-)
*February 22, 2009*

**Question**

Here's what I did -10(.25x + .10y = .19(20)) I multiplied it by -10 so I could easily do the Elimination method. That gets me: -2.5x + -1y = -38 Then, I added the equations together to get: -1.5x = -18 I divided both sides by -1.5 and that got me x = 12. Did I go wrong ...
*February 22, 2009*

**Algebra**

Here's my question: Deep Thought Granola is 25% nuts and dried fruit. Oat Dream Granola is 10% nuts and dried fruit. How much of Deep Thought and how much of Oat Dream should be mixed to form a 20-lb batch of granola that is 19% nuts and dried fruit? Here is a past ...
*February 22, 2009*

**Languages**

Spanish-- no French-- non German-- nein Italian-- no Dutch-- geen :-)
*February 20, 2009*

**Algebra**

Oh... thanks! Now I see why I got a past equation wrong. Thanks for the help! <3 Valeria <3
*February 20, 2009*

**Algebra**

The Nutty Professor sells cashews for $6.75 per pound and Brazil nuts for $5.00 per pound. How much of each type should be used to make a 50-lb mixture that sells for $5.70 per pound? c = lbs of cashews b = lbs of brazil nuts Are these the right equations? b + c = 50 6.75b + ...
*February 20, 2009*

**Algebra**

The Coffee Counter charges $9.00 per pound for Kenyan French Roast coffee and $8.00 per pound for Sumatran coffee. How much of each type should be used to make a 20-lb blend that sells for $8.40 per pound? Here are the 2 equations (or system of equations) I created: K = lbs of...
*February 20, 2009*

**chemistry**

I don't get it
*January 21, 2009*

**character traits (further questions)**

rebecca refused to change her mind even when it was clear that she was wrong.she was nce
*September 16, 2008*

**character traits (further questions)**

rebecca refused to change her mind even when it was clear that she was wrong
*September 16, 2008*

**math**

multilpying nad dividing rational expressions
*May 7, 2008*

**Accounting**

After aging the accounts receivable, it si estimated that $800 will not be collected and the allowance account has a debit balance before adjustment of $100. The adjusting entry for estimating uncollectible account expense should be in the amount of_______?
*April 10, 2008*

**accounting**

After aging the accounts receivable, it is estimated that $800 will not be collected and the allowance account has a credit balance before adjustment of $200. The adjusting entry for estimating uncollectible account expense should be in the amount of_____?
*April 10, 2008*

**italian**

In the spoken language we say sono le sei del mattino
*April 1, 2008*

**Math**

A can with 40 marbles in it weighted 135 grams. The same can with 20 marbles weighed 75 grams. How much is the weight of the can? Explain your answer.
*February 3, 2008*

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