Wednesday
August 27, 2014

Posts by ashley


Total # Posts: 2,704

Brief Calculus
Thanks Guys!
May 2, 2011

Brief Calculus
Decide on what substitution to use, and then evaluate the given integral using a substitution. HINT [See Example 1.] (Round your decimal coefficients to four decimal places.) x/(2x^2 − 1)^0.4 dx
May 2, 2011

Algebra
solve the eauation check for extraneous solutions. log5 x=4
April 30, 2011

Chemistry
we were asked to find the enthalpy change because it is an exothermic reaction. Dont i have to convert cm^3 into dm^3 in the equation?when i divide the Heat energy with the number of moles in order to get enthalpy change do i put the moles of the limiting reagent?
April 30, 2011

Chemistry
So I am writing a lab report and Im stuck with calculating the enthalpy change of combustion of the following reaction: Mg+2HCl--> MgCl2+H2 .I am given the mass of Mg which is 5g and the concentration of HCl which is 2M and the volume of HCl which is 50 cm^3.I found the ...
April 30, 2011

precalc
How do you solve log5 sqrt125?
April 26, 2011

Algebra 1
-3t/t^3-t^2
April 24, 2011

english
Neither her associates nor the doctor __________ the surgery is necessary. thinks think
April 22, 2011

geometry
x^2=y^2-6x+8y=10 what shape is this?
April 21, 2011

chemistry
What is the lewis dot diagram for menthol? (C10H20O1)
April 21, 2011

Physics
I've been stuck on this problem for a while. Im not sure where to even begin. A bike wheel is rotating with an angular velocity of 3.1 rev/s. If the coefficient of kinetic friction between the wheel and brakes is .87, then find the revolutions the wheel makes in coming to ...
April 21, 2011

algebra
which expression is the equivalent of 3x+2y+8−9?
April 20, 2011

Integrated Physics and Chemistry
The internal energy of a material is determined by.. A)its temperature B)the kinetic energy of its molecules C)the potential energy of its molecules D)the combined amount of kinetic and potential energy of its molecules
April 19, 2011

Integrated Physics and Chemistry
a baby pushes a toy across the floor with a force of 5 newtons.which is this a example of balanced force,interia,ubalanced force,or velocity?
April 19, 2011

Integrated Physics and Chemistry
Matching... Heat engine Heat pump Boiler Thermostat -a heating appliance that uses heat energy released from fossil fuels to warm water for use in radiant or convection heating systems -a appliacne that controls the maintenance temperature of a heating system -an appliance ...
April 19, 2011

Integrated Physics and Chemistry
A thermostat is used for which of the following? A) Maintaining the temperature is a room B)Turning a heating system on C)Turning a heating system off D)All of the above
April 19, 2011

math
Please more help
April 18, 2011

math
In standard (x,y )coordinate plane,the graph of (x-2)^2 + (y+4)^2=9 is a circle.What is the area enclosed by this circle,expressed in square coordinate units?
April 18, 2011

math
In triangle ABC if <A and <B are acute angles and sin 10/13 , what is the value of cos A?
April 18, 2011

Integrated Physics and Chemistry
Some refrigerants used in air conditioners have been associated with.. A)somg B)destruction of the ozone layer C)thermal pollution D)power failures
April 18, 2011

chemistry
What would be the best technique to separate a soluble solid from a solution, like separating salt from a mixture of salt water?
April 17, 2011

Social Studies
ICIZENTS-people who have the right to participate in goverment
April 14, 2011

algerbra 2
if the sum of the focal radii of this ellipse is 12 what is the value of a^2?
April 13, 2011

algerbra 2
given that a parabola has a directix of =-3.25 and focus of (0,-2.75) find the vertex
April 13, 2011

Health
For this Assignment, imagine that you are a policy analyst for your state human services department. You have been asked to write a short memorandum for the department director on a policy paper entitled Rising Health Care Costs: State Health Cost Containment Approaches. In ...
April 12, 2011

math
how do you remember mixed numbers and improper fractions?
April 11, 2011

hsm210
What are some concerns about the current state of the human service industry?
April 10, 2011

chemistry
If you have 200. mL of a 0.50 M solution of KOH and you wish to dilute it to 0.30 M, how many mL of water should you add?
April 6, 2011

HCS 320
I am supposed to outline how to integrate communication from a central command area to all areas of the organization. The organization is FEMA. I am completely lost and I just need some help on how to get started. For instance what would be the central command area, and what ...
April 4, 2011

Hcs341
Please someone help me this was due yesterday
April 3, 2011

Hcs341
I would love a reference for description of the process for tracking and evaluating training effectivness.
April 3, 2011

english
identify one example of personification from dorothy aldis s poem snow and knikki giovannis poem the world is not a pleasant place to be
April 3, 2011

english
i have no clue how to paraphrase!!! paraphrase the quotation: the poets voice need not merel be the record of man it can be one of the props the pillars to help him endure and pervail.
April 3, 2011

algebra 2
please help i have done these problems 3 times now and always get them worng. find the first three terms of (a-b)^6 find the last three terms of (2x+y)^5 find the third fourth and fifth terms of (a+b)^9
April 3, 2011

Algebra 2
please help i seriously dont understand any of these!! solve by factoring: 1.x^3-12x = x^2 simplify 1.4c/12c^5 2. a^2x/a 3. x^3y^4/2 x^2y^6
April 3, 2011

physics
0.11
March 31, 2011

Chem
Sorry but i figured it out.
March 31, 2011

Chem
Still not understanding on how to set up the problem to get the answer.
March 31, 2011

Math
114
March 29, 2011

physics
THis can be found using the conservation of momentum. Pix + Pix = Pfx + Pfx Where P = mv The mass of the arrow is .3 kg, the target is .0225kg. The initial velocity of the target is -2.15 m/s and the initial velocity of the arrow is 38.0m/s. If the target is stopped, the final...
March 28, 2011

Calculus.
Given the function f with the restricted domain, find the points at which the tangent line is horizontal. f(x)=2sec(x)-tan(x) Domain: [-pi/2,pi/2] * I got (pi/6, square root of 3), but I am not sure if that is right, or if there is another point.
March 27, 2011

Chemistry
A solution consisting of 25.00 g Nh4Cl in 178 ml of water is titrated with 0.114M KOH. How many mL of KOH are required to reach the equivalence pt?
March 24, 2011

6th grade math
my answer is 5554 gallons
March 24, 2011

statistics
a simple random smaple of 55 mathematics teachers were timed as they completed sudoku puzzles. Their mean completion time was 20.3 minutes. The population standard deviation is assumed to be 12 mintues and times vary normally. Find 99% confidence interval for the mean time for...
March 23, 2011

geometry
Given that BD Û AC, which of the following statements is NOT necessarily true?
March 21, 2011

MATH
DETERMINE WETHER (7,-2)IS A SOULTION FOR 3X-2Y=14
March 18, 2011

Chemistry
Waht is the mass in mg of 0.016 moles of glucose (C6H12O6)?
March 15, 2011

math college
If the volume of a cone is 100cm cubed and the lateral surface area of the cylinder is 150cm squared, what is the height of the container
March 14, 2011

Statistics
A survey found that 25% of pet owners had their pets bathed professionally rather than doing it themselves. If 20 pet owners are randomly selected find the probability that between 12 and 7 pet owners, inclusive, have their pets bathed professionally.
March 14, 2011

math
30 - 19 1/3
March 13, 2011

Chem
I want to see if i got my answer correct for #1 but I need help on #2 1.A 150g aluminum pan containing 500g of water is heated on a stove for 5 minutes. The temperature goes from 23.5C to 48.9C. How much heat was absorbed. (s for Al is .900j/g C, s for H2O is 4.184 j/g C) I ...
March 8, 2011

Chemistry
I want to see if i got my answer correct for #1 but I need help on #2 1.A 150g aluminum pan containing 500g of water is heated on a stove for 5 minutes. The temperature goes from 23.5C to 48.9C. How much heat was absorbed. (s for Al is .900j/g C, s for H2O is 4.184 j/g C) I ...
March 8, 2011

Physics
In 1996, the Fiberoptic Link Around the Globe (FLAG) was started. It initially involves placing a 27,000 km fiber optic cable at the bottom of the Mediterranean Sea and the Indian Ocean. Suppose the index of refraction of this fiber is 1.56. If all reflections occur at the ...
March 6, 2011

Physics
In 1996, the Fiberoptic Link Around the Globe (FLAG) was started. It initially involves placing a 27,000 km fiber optic cable at the bottom of the Mediterranean Sea and the Indian Ocean. Suppose the index of refraction of this fiber is 1.56. If all reflections occur at the ...
March 6, 2011

history
Mahanism emphasized: A. The importance of the navy in imperial expansion B. opposition to the new imperialism of the US C. The spread of Christianity to remote nations D. The equality of people who lived in imperial territories
March 6, 2011

geometry
You are given two segments, with AB = 4 and with CD = 7. Explain how you could use only the congruent-segments construction to construct with EF = 1.
March 3, 2011

COM / 220
I need help with the DQ 2 week 2. Could someone help me please?
March 1, 2011

sociology
The general trend of American's attitudes toward the unmarried has been from an attitude of _____ in the 1950s to an attitude of ______ in the 2000s A.) Non-acceptance; acceptance B.) Neutrality; non-acceptance C.) Non-acceptance; neutrality D.) Neutrality; tolerance I ...
March 1, 2011

sociology
The general trend of American's attitudes toward the unmarried has been from an attitude of _____ in the 1950s to an attitude of ______ in the 2000s A.) Non-acceptance; acceptance B.) Neutrality; non-acceptance C.) Non-acceptance; neutrality D.) Neutrality; tolerance I ...
March 1, 2011

sociology
The general trend of American's attitudes toward the unmarried had been from an attitude of _________ in the 1950s to and attitude of _________ in the 2000s
March 1, 2011

sociology
The general trend of American's attitudes toward the unmarried had been from an attitude of _________ in the 1950s to and attitude of _________ in the 2000s
March 1, 2011

Physics
a 45N lithograph is supported by two wires. One wire makes a 25 angle with the vertical and the other makes a 15 angle with the vertical. find the tension in each wire
February 25, 2011

Math (Help This Will Be on My Test Tomorrow!)
y= ax^2+bx-4. How would i find the equation of this parabola with the points (0,-4) (1,0) (2,2) (4,0) and 6,-10)?
February 24, 2011

math
how doo i do my my math homeeework:congruence problems.
February 24, 2011

Physics
A proton has a mass of 1.672 X 10 -27 kg. What is its weight? (using 9.81 for gravity)
February 23, 2011

CHEMISTRY: DUE TONIGHT. CHECK MY ANSWER?
1. For the simple decomposition reaction below, rate = k[AB]2 and k = 0.40 L/mols. AB(g) A(g) + B(g) If the initial concentration of AB is 1.60 M, what is [AB] after 13.0 s? ANSWER: (.4)(13)=5.2 1/1.6=.625 5.2-.625=4.575 1/4.575= .2185 I tried .22 & .21. They are both wrong. I...
February 23, 2011

spelling
i need words that end with ant and ance but they have to be the same words like distant/distance
February 23, 2011

Stoichiometry
1. Iron reacts with oxygen according to the following equation: Fe + O2→ Fe2O3 a. Balance the equation. b. Assuming you start with 15.0 g of iron, how many dm3 of oxygen are required to react? c. How many molecules of oxygen is this?
February 22, 2011

Biology
What did Darwin believe is the consequence of overpopulation in animals and plants?
February 22, 2011

Biology
Darwin believed that Malthus' ideas about human populations applied more strongly to animals and plants. Why?
February 22, 2011

Physics
A British company makes optical fibers that are 13.6 km in length. If a beam of light travels along one of those fibers, always reflecting at the critical angle, it will travel 20.3 km. What is the index of refraction of the fiber material?
February 20, 2011

chemistry
how many kg does h2o have
February 19, 2011

Physics
Thank you!
February 19, 2011

Physics
A vat in England nicknamed "Strongbow" is 19.7 m tall, but how wide is it? Suppose the vat is filled with water. A ray of light enters the water from the air at one end of the vat, reflects off the bottom at the vat's center, and exits at the opposite end of the ...
February 19, 2011

Physics
A vat in England nicknamed "Strongbow" is 19.7 m tall, but how wide is it? Suppose the vat is filled with water. A ray of light enters the water from the air at one end of the vat, reflects off the bottom at the vat's center, and exits at the opposite end of the ...
February 19, 2011

Physics
Thanks so much!
February 19, 2011

Physics
The maximum depth of Lake Baikal, in Russia, is 1637 m, making it the world's deepest freshwater lake. If a beam of light with an angle of incidence of 60.0 degrees enters the water from the air, what is the horizontal distance between the point where the light enters the ...
February 19, 2011

marketing
Your manager has asked you to investigate the Internet marketing strategies used by the company's major competitors. Use the library, the Internet, and any other resources to research competitors and prepare a presentation. Here are the questions to address for each of the...
February 17, 2011

Math
How many possible license plates are possible in which two letters are followed by at least 1 digit and no more than 4 digits?
February 17, 2011

Physics
On vacation, your 1200- car pulls a 540- trailer away from a stoplight with an acceleration of 1.50. What is the net force exerted by the car on the trailer?
February 17, 2011

Math
Mr.Jensen is buying 2 dozen donuts for $10.98. True or False. The expression 8.5 x 2/10.98 could be used to represent the cost of 8.5 dozen donuts.
February 16, 2011

bookkeeping
What is the total liabilities and owner’s equity in the balance sheet you prepared in Exam Figure 4?
February 15, 2011

U.S History
Which of the following caused a split in the womens's suffrage campaign? a.Alice Paul's aggressive strategy b.Carrie Champan Catt's "winning plan" c.The decision to press for a constitutional amendment d.world war 1
February 13, 2011

general psychology
how may psychology be understood as both an art and a science?
February 13, 2011

Physics
A 4.2-kilogram block sliding down a ramp from a height of 4.5 meters above the ground reaches the ground with a kinetic energy of 33 joules. The total work done by friction on the block as it slides down the ramp is approximately:
February 13, 2011

chemistry
An aqueous solution of nacl has a mole fraction of 0.21. What is the mass of NaCl dissolved in 100.0 mL of solution?
February 13, 2011

Chemistry
An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative percentages of the isotopes?
February 13, 2011

Chemistry
An unknown element Q has two known isotopes: 60Q and 63Q. If the average atomic mass is 60.5 amu, what are the relative percentages of the isotopes?
February 13, 2011

chemistry
the shape and nonding in a Br2 molecule is best described as
February 9, 2011

chemistry
if you mix 50ml of 0.1 tris acid with 60ml if 0.2m tris base, what will be the resulting pH?
February 9, 2011

chemistry
If the solubility of a particular solute is (10 g/100 g H2O) at 20°C, what solution concentration would represent a supersaturated aqueous solution of that solute?
February 8, 2011

accounting
Connection Station, an internet café, had the following operating activities during the month of May: 1. Bought 800 in jump drives and disks, which are available for resale from Office Depot on credit 2. Paid 900 in utilities for the month of may 3. Paid 2000 rent for ...
February 6, 2011

Socials Studies
The puritans had a long-lasting effect on English society and, to some extent, our own. What would be some aspects of society today that seem "puritan" in origin? I really need help on this.. Please, and thank you :-)
February 3, 2011

intro to chemistry
how to come come up with a significant digits poam
February 3, 2011

chemistry
how do i come up with POEM about significant digits please help
February 3, 2011

algebra
yes
February 3, 2011

Physics
4.407
February 3, 2011

physics
A football is kicked with an initial speed of 18 m/s at an angle of 36 degrees above the horizontal. (a) What is the maximum height that it reaches? (b) At what time does it land? (c) How far horizontally does it travel?
February 3, 2011

physics
A 59.0-Ω resistor is connected in parallel with a 116.0-Ω resistor. This parallel group is connected in series with a 15.0-Ω resistor. The total combination is connected across a 15.0-V battery. (a) Find the current in the 116.0-Ω resistor. ______A (b) Find...
February 1, 2011

childcare
ALL WRONG EXCEPT FOR A FEW !!!! WTF ITS CALLED HOMEWORK HELP FOR A REASON
February 1, 2011

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