Friday
February 12, 2016

Posts by Laura

Total # Posts: 1,113

calculus
how do you find the limit as n approaches infinity of n/(2^n + n)?
April 24, 2009

Math
at x=4, y=0. if y=0, there is no y vlaue to "slope" the line, so the line will form vertically at x=4.
April 24, 2009

COLLEGE MATH PLEASE HELP
you need to find the permutation when order matters. look up the formula if you don't know it off hand. this should help you start...
April 24, 2009

earth sceince
Help please anyone? If the wet-bulb thermometer and the dry-bulb thermometer readthe same temperature, the air is said to be??? Anyone know?
April 23, 2009

calculus
how do you take a limit of [ln(1+e^n)]/2n as n goes to infinity?
April 23, 2009

calculus
determine if this converges and methods used to find its covergence or divergence. The series as n = 1 to infinity of [(2n+3)/(3n+2)]^n
April 23, 2009

HCA 210 Introduction to Health Care
According to MedicineNet(2008), “Mental illness is any disease or condition affecting the brain that influences the way a person thinks, feels, behaves and/or relates to others and to his or her surroundings. Although the symptoms of mental illness can range from mild to ...
April 23, 2009

algebra
how can i find adding,sudtracting,andmutiply fraction
April 19, 2009

college math
when eggs in a basket are removed 2,3,4,5,6 at a time there remain, respectively, 1,2,3,4,5 eggs. when they are taken out 7 at a time, none are left over. find the smallest # of eggs that could have been contained in the basket.
April 19, 2009

college math
thank you, count iblis. you have been a tremendous help with homework.
April 19, 2009

college math
what is the remainder when the sum 1^5+2^5+3^5+...99^5+100^5 is divided by 4? again a mod problem that I don't know how to work.
April 19, 2009

collegemath
find remainders when 2^50 and 41^65 are divided by 7. this is a mod problem but I don't know how to work it...
April 19, 2009

number theory
How do you prove that any palindrome, a number that reads the same backwards and forwards, with an even number of digits is divisible by 11? I know how to show a number is divisible by 11, but how do you prove the above case?
April 19, 2009

number theory
How might you go about proving that N-M is divisible by 9 when N represents an integer (such as 6923) and M represents that integer in reverse order (such as 3296)? so far, I have shown that 6923-3296=3627 is divisible by 9 by the sum of the digits, but how do you prove that ...
April 19, 2009

number theory
give an example to show that a^2 congruent to b^2 mod n need not imply that a congruent to b mod n.
April 18, 2009

ecology
I need to write an ecological profile for an animal. What exactly is an ecological profile? What does it include? Since I am not actually conducting research...it does not need abstract, materials, methods, results etc??? Please help. Thanks
April 11, 2009

college math
how would you find all prime numbers that divide 50! (factorial)?
April 7, 2009

soical civics
in what way could putting a traffic on foreign shoe imports result in a disadvantage to the united states economy or united states consumers i say we would not be able to buy them
April 7, 2009

Chem
so it will be 1 as the last electron comes on that one correct? umm and i don't see the link you posted :S
March 30, 2009

Chem
what are the four quantum numbers of the last electron of As this is what i have n=4 l=1 ms= 1/2 i don't know how to calculate ml. I know it's either: -1,0,1
March 30, 2009

math
if a number is evenly divisible by 6, it is also evenly divisible by which other numbers?
March 30, 2009

calculus
thnx
March 24, 2009

calculus
what's the limit as n goes to infinity of (2 + 4/n^2)^(1/3)
March 24, 2009

Physical Science
0.83 m/s
March 20, 2009

social civics
what plan of government is used in chicago heights
March 16, 2009

calculus
what is the derivative of 4(x^2-1)^-1/2
March 15, 2009

Physics
What is the difference between an inelastic and an elastic collision? What does kinetic energy have to do with all of this? Give an explanation that explains the role of momentum, kinetic energy, and such in collisions. I think elastic collisions is when the things bounce of ...
March 10, 2009

college math
find the integral of x^2 e^-xdx with the limits of negative infinity to zero. so far, I have, lim as t approaches negative infinity of (-e^-x [x(x+2) + 2] from 0 to t does this converge or diverge?
March 9, 2009

college math
Prove: there exists x and y for c=ax+by iff gcd(a,b)/c.
March 8, 2009

college math
thanks, I'll try these methods
March 8, 2009

college math
the exact problem states: for an arbitrary integer a, verify that 3/a(2a^2+7). This is a problem out of a number theory book included in the section involving gcd.
March 8, 2009

college math
Yes, you are to prove that 3 divides [(a)(2a^2+7)] probably by using the greatest common divisor.
March 8, 2009

college math
Prove: 3/ a(2a^2 + 7)
March 8, 2009

Chemistry Lab
Hi guys, I thought it would be due to aromaticity breaking difficulty? In the bromination reaction, why are the double bonds which are par t of the phenyl r ing not brominated? A. We only added one equiv alent bromine. B. T he phenyl r ing is aromatic and aromaticity is diffic...
March 5, 2009

5th grade Reading
Its the syllable with the loudest stress. The accent is usually on the syllable before the suffixes such as ion, ical, and ity.
March 1, 2009

General Question
How does this statement go: A slim to none chance or a slim to nothing chace
March 1, 2009

calc
Using L'Hospital's Rule, find, the limit as x approaches 0 of x^(sinx)
February 26, 2009

college math
Using L'Hospital's Rule, find, the limit as x approaches 0 of x^(sinx) thank you in advance to any help.
February 26, 2009

college math
how do you take the derivative of e^(x^2)?
February 26, 2009

collegte math
Using L'Hospital's rule: find, lim as x approaches (-) infinity of xsin(1/x)
February 26, 2009

Economics
How is elasticity of supply related to elasticity of demand? Is this correct? I know that the terms supply and demand refer to the behavior of people as they interact with one another in markets. Buyers determine demand and sellers determine supply. Just as we can measure how ...
February 26, 2009

Social Studies
1. The president of the United States is elected by the electoral college. What type of system is this? 2. In ancient Athens (Greece) tribes and generals took turns at power. This is an example of what type of political system? 3.What type of political system is headed by ...
February 26, 2009

Chemistry
What is the difference between an amino acid and a protein? How does this difference in structure affect biological function?
February 23, 2009

Chemistry
State two differences between DNA and RNA.
February 22, 2009

Chemistry
Give an example of a disaccharide
February 22, 2009

Chemistry
The question is with a lab that I have already done. Here are my numbers moles of malachite in 1g 221.12 moles of CuO produced 141.57 ratio of moles of CuO produced per moles of malachite decomposed 79.55 Use the mole ratio of CuO produced per mole of malachite to write a ...
February 22, 2009

Chemistry
I need to write a balanced equation for this problem and am having difficulty doing so. The question is this: use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO2 is also a product of ...
February 22, 2009

Chemistry
I need to write a balanced equation for this problem and am having difficulty doing so. The question is this: use the mole ratio of CuO produced per mole of malachite to write a balanced equation for the malachite decomposition reaction. Assume that CO2 is also a product of ...
February 22, 2009

Chemistry
Why do carboxylic acids generally have higher melting and boiling points than alcohols, ketones, and aldehydes of comparable mass?
February 21, 2009

Chemistry
Explain why alcohols of lower molecular weight are generally soluble in water but those of higher molecular weights are generally not.
February 21, 2009

college math
How do you prove: If a/b, then a/bc So far I have: Since a/b, then b=ac where c is an integer. Now where do i go?
February 21, 2009

Chemistry
What are amine salts?
February 18, 2009

Chemistry
An alcohol has an OH functionally in it. Do you expect it to be a base? Why, or why not?
February 18, 2009

Economics
How does the government participates in a mixed economy? Based on principles of the free market, allowing some government intervention. Is there anything else i can say?
February 18, 2009

college math
how do you integrate (cos^2 x)^4
February 15, 2009

college math
thnx
February 15, 2009

college math
is the integral of 1/x^2, 2x ln of the absolute value of x^2?
February 15, 2009

college math
thank you. i understand now.
February 15, 2009

college math
how do you integrate ln(x^2+1)dx?
February 15, 2009

math
yes, I got this answer, as well THANKS
February 15, 2009

math
how do you integrate (3x+1)/(x-1)x^2 dx?
February 15, 2009

math/ cal
thank you for your answer, but this example problem is not the same as mine. the example problem is (sin (x))^2, in other words the whole quantity is squared. mine is just sin of x^2. any suggestions here?
February 15, 2009

math/ cal
how do you integrate sin (x^2) dx?
February 15, 2009

Chemistry
Name an isomer of pentane (that is not cyclic) and write down its structure.
February 14, 2009

adult education
I am currently studying for the cbest exam in all three areas, math, reading and writing. Does anyone have any current information that would help better prepare for these tests.
February 14, 2009

Chemistry
What is the three dimensional structure of methane? Why?
February 14, 2009

Chemistry
What is the difference between hydration and hydrogenation reactions?
February 14, 2009

CHemistry
Why do cis and trans isomeric compounds exhibit different properties?
February 14, 2009

Chemistry
Why is the benzene molecule represented as " a flat cyclohexane with a ring inside?"
February 14, 2009

Chemistry
Why is benzene much less reactive than 1, 3, 5-cyclohexatriene?
February 14, 2009

Chemistry
Are these compounds organic, if not what are they? Kmno4 CH3OH C6H6 PdC12 CH3CO2H
February 14, 2009

Chemistry
What is the formula of 1,3-butadiene?
February 11, 2009

Chemistry
Name one structural and one chemical difference between acetylene and ethylene. Give reasons.
February 11, 2009

Chemistry
Name an isomer of pentane (that is not cyclic) and write down its structure.
February 11, 2009

Chemistry
What is the three dimensional structure of methane? Why?
February 11, 2009

Chemistry
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
February 11, 2009

Economics
1. The main disadvantage of using shells as money, instead of coins, would be a lack of: a. durability b. portability c. uniformity d. divisibility I think its B. portability?
February 11, 2009

Economics
Thank you, for your feedback. I just read another part of my economic book and B is definitely the answer.
February 11, 2009

Economics
1. Products that would be used in calculating GDP include: a. Toys manufactured in China at a factory owned by a U.S. company b. cars manufactured in Tennessee at a factory owned by a Japanese automobile company c. plastic manufactured in Kentucky and sold to toy manufacturers...
February 11, 2009

CHemistry
In a clean 250mL volumetric flask, 125mL of a 6.0 M hydrochloride acid was added. This was then diluted with more water to reach the 250mL mark. What is the molarity of the acid at this time?
February 7, 2009

Chemistry
calculate the final concentration if 4.0 L of 1.5 M NaC1 and 2.0 L of 3.0 M NaC1 are mixed.
February 7, 2009

AP CHEM
How did you get part B?!
February 7, 2009

science
What kind of materials block sound.
February 5, 2009

Physics - Waves
0.78352941
January 26, 2009

Physics - Waves
0.141525
January 26, 2009

Socialogy and cultural diversity
Are Irish Americans considered a subordinate group in American History? I need to do a paper on a subordinate group and I was thinking of using Irish Americans.
January 16, 2009

Chemistry
91.7g of HCl solution was added to the calorimeter and brought to a constant temperature. Then 0.5278g of MgO was added and the temp rose from 25.65C to 32.60C and held steady. Then 0.0185g of Mg was added and the temp again rose from 30.35C to 32.20C Calculate the Cp for the ...
January 14, 2009

chem
If a cube with edges of 1.000 cm weighs 25.68 g, what would the mass of a cube of the same material with sides 2.63 cm in length be?
January 13, 2009

Chemistry
91.7g of HCL solution was added to the calorimeter and brought to a constant temp. Then 0.5278g of MgO was added and the Temp rose from 25.65C to 32.60C and held steady. Then 0.0185g of Mg was added and the temp again rose from 30.35C to 32.20C. Calculate the Cp for the ...
January 12, 2009

spanish help
1. soy 2.somos 3.son 4.estoy 5.fue 6.es , era ?? 7.es 8.esta
January 9, 2009

spnaish HELP
1. Is wrong. Its... Quiero ir a Colorado para Navidad 2. Has comprado algo para la cena ? 3. Este celular es solo para emergencias. 4. Ella siempre viaja en autobús.
January 9, 2009

grammer
Thanks Ms.Sue and Writeacher...website was a big help. My son now has a better understanding subject/predicate! very happy :)
January 6, 2009

grammer
what is a predicate? My son's assignment is to circle the action verb and underline the predicate. I've tried to explain what a predicate is, but he still doesn't understand.
January 6, 2009

science
Appendix
January 6, 2009

home economics
how does the increase in use of ethanol in the United state impact other place in the world?
January 4, 2009

Calculus
The curve f(x)=-x^4+2x^2+x has a tangent at the point (1,2). Is this line tangent to the curve at another point and, if so where?
January 4, 2009

math need help with this
If on the first of January a savings account has a balance of $3200 what amount will be in this account after three years if the bank gives 6% per year interest compounded quarterly?Assume that there are no deposits or withdrawals of money during these three years.
December 17, 2008

algebra with pizzazz
What is it called when a sea bird lands on a channel marker?
December 16, 2008

math
A dealer offers a computer software program whose list price is $500 at a 19% discount. She will give an extra 3% discount if paid in cash. What is the selling price if payment is made in cash? If 500=81%, _____=78% (this comes from subtracting 19% from 100%, then subtracting ...
December 16, 2008

math
need help in 1996, the civilian labor force of the united states included 127 million people, and 5% were unemployed. how many people in the cilvilian labor force were unemployed?
December 16, 2008

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