Saturday
October 25, 2014

Posts by Catie


Total # Posts: 36

Calculus
A farmer wants to build a rectangular pen and then divide it with two interior fences. The total area is to be 2484ft^2. The exterior fence costs $18.00 per foot and the interior fence costs $16.50 per foot. Find the dimensions of the pen that will minimize the cost. What is ...
July 15, 2012

Calculus
Thank you!!
July 15, 2012

Calculus
Zoe purchased a house in 1999 for $196,000. In 2004, she sold the house and made a net profit of $80,000. Find the effective annual rate of return on her investment over the 5-year period. (Round your answer to the nearest hundredth of a percentage point.)
July 15, 2012

Calculus
Doing homework with James, thanks!
July 15, 2012

Calculus
Paying in cash. Thank you!
July 15, 2012

Calculus
Denominator
July 15, 2012

math
stacy multiplied 5x9 andand said the answer was 44. what two patterns could you use to show that her answer is not correct?
November 28, 2011

Math
A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr. What is the pressure difference? Use 1.28 kg/m^3 for the density of air. How much force is exerted on the roof? If the roof cannot withstand this much force, will it "blow in" or &...
August 15, 2011

Math
A hurricane wind blows across a 6.00 m times 15.0 m flat roof at a speed of 190 km/hr. Is the air pressure above the roof higher or lower than the pressure inside the house? Explain. Need help
August 14, 2011

Please help!
I really dont understand this
August 14, 2011

Physics help
A gas sample enclosed in a rigid metal container at room temperature 20C has an absolute pressure p_1. The container is immersed in hot water until it warms to 40C. What is the new absolute pressure p_2? Express your answer in terms of p_1. I was told to use p_1/T_1=p_2/T_2 I ...
August 14, 2011

Physics
A gas with initial conditions p_i, V_i, and T_i expands isothermally until V_ f=6 V_i. What are (a) T_f and (b) p_f? in terms of T_f/T_i and P_f/P_i First I dont understand what this is saying at all. And Second I need to know how to solve it.
August 13, 2011

Physics
Thank you! That really helped!
August 12, 2011

Physics
1.9 mol of gas at a temperature of -180 C fills a 3.4 L container. What is the gas pressure? Never been good at physics or mol stuff, how do you set it up?
August 12, 2011

HELP!
I dont have any other information though except for what is in the original question.
July 28, 2011

Physics
A block attached to a spring with unknown spring constant oscillates with a period of 7.0 s. Parts a to d are independent questions, each referring to the initial situation. What is the period if... The mass is doubled? The mass is halved? The amplitude is doubled? The spring ...
July 28, 2011

Chemistry
A compund containing elements A and B has the formula A3B. If a jar containing 100 molecules of the compound A3B, how many atoms of type A are in the jar?
January 7, 2011

5th grade
What do enzymes do in digestion?
October 29, 2010

7th Grade Math
z/6 + 11 > -49 This is my problem for homework and I don't know how to do it. My teacher showed us but I guess it didn't get throw to me. ?????????????? Help
November 19, 2008

7th grade
Ra was a sun god. He took on many of the attributes and even the names of other gods as Egyptian myths evolved. A good example of this is the god Ra and Amun merging to become Amun-Ra or Ra and Horus combining to become Ra-Harakhte. Since Ra was a god of great antiquity, there...
November 18, 2008

math
take two divded by three
November 15, 2008

History
Why was an entirely new consitution needed according to Publius?
November 15, 2008

7th grade pre algebra
z/6 + 11 > -49 This is my problem for homework and I don't know how to do it. My teacher showed us but I guess it didn't get throw to me. ?????????????? Help
November 6, 2008

CHEMISTRY
thanks!
January 29, 2008

CHEMISTRY
1.5748(0.944-1.8447Y/1.5377) + 1.90293Y = 0.953 -.4026 Y + 1.90293 Y = 0.953 1.50033 Y = 0.953 Y=.6352 1.5377 X +1.8447(.6352) = 0.944 1.5377 X +1.1717 = 0.944 1.5377 X = -.2277 X=-.148078
January 29, 2008

CHEMISTRY
I see you took my advice literally about carrying extra places. It isn't necessary to use ALL of those numbers that show up on your calculator. I think 1.5377X + 1.8447Y = 0.944 will be quite sufficient and I suspect even one number fewer still will work ok. As for making ...
January 29, 2008

CHEMISTRY-For Dr.Bob
thank you so much for all of your help!
January 29, 2008

CHEMISTRY-For Dr.Bob
thank you, here is what i have. X(1.53768425g)+Y(1.844680696g)=0.944g X(1.574765922g)+Y(1.902934537g)=0.953g to solve this i know i need to use a system of equations, but i'm having trouble setting the coefficients to equal each other.
January 29, 2008

CHEMISTRY-For Dr.Bob
thank you so much for your help. this is what i have thus far: X(331.74g/2*107.87g) + Y(253.33g/137.33g)=0.944g which is: X(1.54g)+Y(1.84g)= 0.944 is that correct? how would i solve for the nitrates? we didn't measure each one separately--we measured the original sample. ...
January 29, 2008

CHEMISTRY-For Dr.Bob
My chem class just finished a lab in which the objective was to find the percentage of silver and barium in a nitrate salt mixture by precipitating the chromates, separating out the precipitate from the solvent and spectator ions via filtration, and analysis of the combined ...
January 29, 2008

CHEMISTRY
My chem class just finished a lab in which the objective was to find the percentage of silver and barium in a nitrate salt mixture by precipitating the chromates, separating out the precipitate from the solvent and spectator ions via filtration, and analysis of the combined ...
January 28, 2008

Contemporary History
thank you!
January 28, 2008

Contemporary History
i have to write two papers, one about the causes and the other about the effects of world war II. how can i structure them so that i score well?
January 28, 2008

Chemistry
thank you!
January 12, 2008

Chemistry
I'm having a hard time getting started studying for my chemistry midterm. i'm kind of overwhelmed. my teacher gave me a brief study guide, but where would be the best place to start? are notecards effective for studying chemistry?
January 12, 2008

Reading
The Great Depression http://encarta.msn.com/encyclopedia_761584403/Great_Depression_in_the_United_States.html
March 26, 2007

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