Thursday

October 2, 2014

October 2, 2014

Total # Posts: 37

**chemistry help**

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants? 2Na(s)+Br2(g) ---->2NaBr(s) 1. 2mol Na, 2mol Br2 2. 1.8mol Na, 1.4mol Br2 3. 2.5mol Na, 1mol Br2 4. 12.6mol Na, 6.9 mol Br2
*September 24, 2014*

**math**

Find the maximum and minimum value of the quadratic function g(x) = 2x^2 + 6x + 3
*September 17, 2014*

**science**

Suppose that a biologist states that the average height of undergraduate students at your university is 205 cm plus or minus a standard deviation of 17 cm. What does this mean? Does it mean that the height of undergraduates at the university ranges from 17 cm less that the ...
*September 11, 2014*

**math - please help**

f(x)=2x; -1(is less than or equal to) x (less than or equal to) 5 Find the domain of the function.
*September 9, 2014*

**math**

Follow the order of operations. 8 x [5 + (18-7)] ÷ 4 First, the parenthesis, (18-7) = 11, so 8 x [5+11] ÷ 4 Next, the parenthesis again, (5+11)=16, so 8 x (16) ÷4 Multiplication, 8 x (16) = 128, so 128 ÷ 4 Finally, division, 128 ÷ 4 = 32 so ...
*September 8, 2014*

**math - please help**

f(x)=2x; -1(is less than or equal to) x (less than or equal to) 5 Find the domain of the function.
*September 8, 2014*

**algebra plz check answer**

y = 3x 4 - 2x 2 + x - 3 factor (3x^4 -2x^2) (x-3) Factor out x^2 from the first, so you have (x^2) (3x^2 - 2) (x-3), so x^2=0 3x^2 - 2 = 0 x-3=0 So how many zeros can you get after you solve these?
*September 8, 2014*

**math**

Given the graph of y=f(x) 1. y = (-f) **I think this is that you reflect across the x-axis. 2. y = f(-x) = f(x) even I'm not sure. 3. y = -f(x) = f(-x) odd Not sure either.
*September 2, 2014*

**math**

Factor completely: A. 3x^3/2 -9x^1/2 +6x^-1/2 B. x^3 y -4xy
*September 1, 2014*

**math**

Simplify (3x-2)^3 - (4x+5)^2 Can you show it step-by-step please
*September 1, 2014*

**Chemistry**

Hey, So a runner wants to run 10.0 km. She knows that her running pace is 7.5 m per hour. How many minutes must she run? Can you explain it?
*August 31, 2014*

**Pyhsics **

The weight of the atmosphere above 1 m2{\rm m}^{2} of Earth's surface is about 100,000 N{\rm N}. Density, of course, becomes less with altitude. But suppose the density of air were a constant 1.2 kg/m3{\rm kg}/{\rm m}^{3}. Calculate where the top of the atmosphere would be...
*April 10, 2014*

**Pyhsics **

What would be the final temperature of a mixture of 50 g{\rm g} of 17∘C^\circ C water and 50 g{\rm g} of 44∘C^\circ C water? I have no clue where I should even begin please help.
*April 10, 2014*

**calculus HELP!**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
*November 6, 2013*

**math calculus**

A person stands on a bridge that is 100 feet above a river. If she drops a pebble how fast is it moving after 2 seconds? How long does it take the pebble to reach the river below? She has another pebble that she tosses up with initial speed of 8 feet per second. It goes up, ...
*November 6, 2013*

**Help! Calculus**

it's for calculus
*November 6, 2013*

**Help! Calculus**

An elevator in a high rise building accelerates and decelerates at the rate of 1 foot per second squared. Its maximum speed is 8 feet per second. It starts from rest, accelerates to its maximum speed and stays at that maximum speed until it approaches its destination where it ...
*November 6, 2013*

**accounting**

On March 3, a customer gives you $1800 cash for services not yet performed. At the end of the month, only $600 of services are performed. In preparing the March statement, all $1800 was listed as revenue. What errors would this cause? What principles are involved? What is the ...
*December 8, 2012*

**accounting**

You issue a $120,000 bond at par on March 31 due in 10 years that pays 11%. You pay interest on September 30. You pay off the bond ten years later. Assume that the company makes no adjusting entries. What journal entries should be recorded to issue the bond, pay interest and ...
*December 8, 2012*

**accounting**

The balance in the allowance for doubtful account is $30,000 credit. You write off $18,000 on a specific invoice to Bob. Later, Bob pays you $2000 on these written off invoices. At year-end, you estimate that $25,000 of invoices will not be collectible. Make all the ...
*December 8, 2012*

**Finance**

Can anyone explain to me how to use this formula? Cost of failing to take a cash discount Disc ount percent 100 percent Discount percent 3 60 Final due date Discount period I am trying to calculate Assume the proceeds from the loan with the compensating ...
*October 15, 2011*

**Algebra**

Thank you Ms. Sue, I can now understand what it was I was looking for. I kept thinking square and not seeing I was actually measuring a right triangle. Thanks again!
*June 20, 2011*

**Algebra**

What does it mean to refer to a 20 in tv set or a 25 in set?Such units refer to the diagonal of the screen. A 35 in unit also has a width of 28 in. What is it's height?
*June 20, 2011*

**human resources 240**

Thank you for the suggested sites, they were a tremendous help. I was able to understand what criterion defiecncy actually was and how the challenges would affect both the employee and employer if not addressed.
*January 3, 2011*

**human resources 240**

What are the special challenges of criterion contamination and what would be the effects on employees and employers if these challenges are not addressed?
*January 3, 2011*

**Algebra**

Sorry it must have been a mistake. I would not do that intentionally and I realize there are few people to help and the help isnt instant.
*December 24, 2010*

**Algebra**

How would I express the coordinates for y20 by x(-20)
*December 24, 2010*

**Algebra**

Thank you so much. Sorry if you thought I was being impatient. I have no clue how I managed to do that. I will be careful to make sure it doesn't happen again. Thanks again.
*December 24, 2010*

**Algebra**

How would I express the coordinates for y20 by x(-20)
*December 24, 2010*

**Algebra**

For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $60 and each tree is $84, what is the maximum number of trees you can buy with a budget of $2,...
*December 23, 2010*

**Algebra**

I figured it out, and actually you multiply the 2.5 by 300 and then the 3.5 by 300 to get the amount of sand and gravel!!
*September 22, 2010*

**Algebra**

A batch of concrete is made by mixing 1 part cement, 2.5 parts sand, and 3.5 parts gravel. How many pounds of sand and gravel are needed to make 300 pounds of cement?
*September 22, 2010*

**9th **

Solve for: -20 <= 3x - 7 <= -2 The solution is xl __<= x <=__
*March 10, 2010*

**9th grade**

Trains A and B are traveling in the same direction on parallel tracks. Train A is traveling at 100 mile per hour and train B is traveling at 125 mile per hour. Train A passes a station at 3:15pm. If train B passes the same station at 3:27 pm at what time will train B catch up ...
*March 10, 2010*

**pre-calculus**

Thanks!
*January 28, 2010*

**pre-calculus**

If sin a = 3/5 when Pi/2<a<Pi and cos B = -12/13 when Pi<B<3Pi/2, then what is the value of sin(a+b)? I don't get the question... Help appreciated.
*January 28, 2010*

**ethnics**

impact of Orientalism on Muslim and Arab Americans?
*September 3, 2008*

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