Tuesday
September 2, 2014

Posts by frank


Total # Posts: 364

algebra
counterexample if x less than or equal 6, then 2x-3 less than 9
September 19, 2011

lab chemistry
what is the boiling point of 2-propanol at the top of pike's peak
September 19, 2011

physics
Ann is driving down a street at 59 km/h. Suddenly a child runs into the street. If it takes Ann 0.774 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m
August 28, 2011

managerial economics
a 56m b 76 c 90
July 11, 2011

Physics
(a ball is thrown straight upward with some unknow velocity. The ball reaches a maximum height above the launch point of 32m. how fast is the ball movin when it is 8 m above the launch point )
June 17, 2011

NU
a ball is thrown straight upward with some unknow velocity. The ball reaches a maximum height above the launch point of 32m. how fast is the ball movin when it is 8 m above the launch point
June 17, 2011

Math
If theres a golden rectangle, with one dimension shown as being 100, then what is the length of the unknown side? How do you do this please?
May 10, 2011

geometry
find the volume of a shape whose surface ares is 144 pi square inches
May 10, 2011

Math
Oh i did 1 times 2 times 3 times 4=24, then times the 1000 which is equal to 24000, then on the outside of thefraction it says add 1 so thats how i got 24,001. I dont know what the ...means thats how the problem was written. How does that make it prime though if you don't ...
May 10, 2011

busieness
questions 2) List the facts that have the most bearing on the decision. 4)Explain what each affected person would want you to do about the issue. 5)List three alternative actions and identify the best and worst case scenario for each alternative, anyone who would be harmed by ...
May 8, 2011

gen/105
what website can i use to find this?
May 2, 2011

gen/105
• Conduct online research regarding the strongest of your multiple intelligences. Find three Web sites that accurately describe that intelligence. If you identified more than one intelligence, choose one. • Compile the following information: o Links to the three Web ...
May 2, 2011

physics
a mass of density bottle is 20g,when empty,70g when full of water and 55g when full of a second liquid.calculate the density of the liquid
April 14, 2011

Math
sarah and isabel each has an equal amount of money. After sarah spent 18 and isabel spent 25, Sarah had twice as much as Isabel. How much did each of them have first.
March 21, 2011

com 170
I believe this paragraph below is a Analysis I have to pick between summary,analysis, synthesis, and evaluation can you tell me if i am right and if not which one and why? 1. Alice Doe’s article discussed overlooked tax deductions. It talked about some of the most ...
March 6, 2011

Social Studies-URGENT
no
March 4, 2011

calculus
Please help with this. I submitted it below and was asked to clarify by Henry (hope this is clearer and thank you). I need the first derivative of f(x)=4(x+ sqrt (x(8-x)).And then the second derivative of this to show by the second derivative test that it is a local maximum. ...
March 4, 2011

reading
what are some examples of everyday kid ritual?
March 1, 2011

Math
i think its 10/7
March 1, 2011

calculus
Please help with this. I submitted it below but no one responded. I need the first derivative of f(x)=4(x+ then the square root to include (x(8-x)), then close bracket.And then the second derivative of this to show by the second derivative test that it is a local maximum. This...
March 1, 2011

calculus
Please help with this. I need the first derivative of f(x)=4(x+squareroot (x(8-x)) and then the second derivative of this to show by the second derivative test that it is a local maximum. This is difficult to put into form here and I hope I have got it right. Many thanks.
February 24, 2011

algebra
Find value of x: x(x+2)=7
February 9, 2011

Chemistry
Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
January 30, 2011

Chemistry
Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
January 28, 2011

Chem
Enough SO3 is added to an evacuated container so its initial pressure is 4.00 atm. Calculate the mole fraction of O2 in the equilibrium mixture if the total pressure at equilibrium is 5.00 atm.
January 26, 2011

Math 1 9th grade
how do you find the characteristics of a graph
January 20, 2011

biology
rana pipiens, a species of frog, has a diploid chromosome number of 26. a. how many chromosomes are present during metaphase i? per cell? b. how many chromatids are present during anaphase i ? per cell? c. how many centromeres are present during telophase I? per cell? d. how ...
January 15, 2011

Calculus
if u and v are differentiable functions, then does d(uv) = dudv
December 14, 2010

MATH HELP NEEDED
combine 2nd and third
November 18, 2010

MATH HELP NEEDED
yfrog./ 9escreenshot25ucj img338.imageshack.us /img338/7823/screenshot25uc.jpg
November 18, 2010

Algebra
when i combine the like terms i dont know what the next step is
November 17, 2010

Algebra
At what two points do the graphs of y=2x^2-5x-12 and y=1/2x^2-3x+4 intersect? explain your reasoning.
November 17, 2010

Math
b) temperature of the surrounding environment
November 16, 2010

Math
Using Netwon Law of Cool, the graph of T(t)=S+(T subscript --S)e^kt approaches a horizontal asymptote.What does the asymtote describe? a) intial temperature of the heated object b) temperature of the surrounding environment c) the difference in the temparture of the heated ...
November 16, 2010

Pharmacy Tech
An IV infusion order is written for 0.3 L of D5W/0.45% NS to run over 12 hours. The drp factor on th IV is set to 12 gtt/mL. What is the flow rate in drops per minute? Hint make sure your equation includes conversion factors for volume and timeso that the answer is in gtt/min....
November 3, 2010

english
aesthetics?
November 1, 2010

english
This teen romance doesn't have a single authentic moment, from its canned tragedy setup . . . to its power-ballad finale . . ." wich one would it be? authenticity? universality? aesthetics?
November 1, 2010

math
find all real zeros and their multiplicity of the polynomial function f(x)=5(x-4)squared(x+2)
November 1, 2010

math
sketch the graph of quadratic function. identify vertex and x-intercepts f(x)=(x-3)squared-1
November 1, 2010

algebra
sketch the graph of quadratic function. identify vertex and x intercepts f(x)(x-3)squared-1
November 1, 2010

algebra
solve the system of equations x+y=1 x-y=5
November 1, 2010

algebra
find all real zeros and their multiplicity of the polynomial function f(x)=5(X-4)squared(x+2)
November 1, 2010

algebra
state the domain of the function. identify all intercepts and find vertical and horizontal asymtodes. f(x)=x-2 over x+1 or x-2 f(x)= ___ x+1
November 1, 2010

algebra
find all real zeros and their multiplicity of the polynomial function f(x)=5(x-4)squared(x+2
November 1, 2010

algebra
write the partial fraction decomposition of the rational expression ax over x squared -x-2 or ax ____________ xsquared-x-2
November 1, 2010

algebra
you deposit 8500 dollars in an account that pays you 3.5 % interest compounded continuously. How long will it take for the money to triple?
October 31, 2010

small business management
what's the best way to find out if a particular business is a good fit for you
October 28, 2010

calculus
Integrate x^2+5x+1dx/(2x^3+15x^2+6x+23)^1/2
October 15, 2010

AP Physics
A 2.8 kg mass hangs at one end of a rope that is attached to a support on a railroad car. When the car accelerates to the right, the rope makes an angle of 9.0° with the vertical, as shown in Figure P4.68. Find the acceleration of the car.
October 5, 2010

AP Physics
A woman at an airport is towing her 17.0 kg suitcase at constant speed by pulling on the strap at an angle of θ above the horizontal (Fig. P4.40). She pulls on the strap with a 26.0 N force, and the friction force on the suitcase is 10.0 N. What angle does the strap make ...
October 5, 2010

12th grade Math - word problems
84.33
September 20, 2010

Chemistry
Calcium chloride has been used to melt ice from roadways. Given that the saturated solution is 32% calcium chloride by mass, estimate the freezing point. Express your answer in degrees Celsius. Assume that calcium chloride behaves ideally in solution.
September 14, 2010

physics
To measure the height of a tree, you throw a rock directly upward, with a speed just fast enough that the rock brushes against the uppermost leaves and then falls back to the ground. If the rock is in the air for 2.1 s, how tall is the tree?
September 7, 2010

physics
To measure the height of a tree, you throw a rock directly upward, with a speed just fast enough that the rock brushes against the uppermost leaves and then falls back to the ground. If the rock is in the air for 2.1 s, how tall is the tree?
September 7, 2010

physics
Consider a rock that is thrown off a bridge of height 27 m at an angle θ = 24° with respect to the horizontal as shown in the figure above. If the initial speed the rock is thrown is 12 m/s, find the following quantities: (a) The time it takes the rock to reach its ...
September 6, 2010

physics
I solved for h and got 210.2. What am I doing wrong?
September 6, 2010

physics
could you possibly explain A. im still not understanding it.
September 6, 2010

physics
A model rocket is launched straight upward with an initial speed of 60.0 m/s. It accelerates with a constant upward acceleration of 2.00 m/s2 until its engines stop at an altitude of 130 m. (a) What is the maximum height reached by the rocket? m (b) How long after lift-off ...
September 6, 2010

chemistry
-10KJ
September 5, 2010

College Physics
thank you
August 22, 2010

College Physics
2 questions: a)Assuming that water has a density of exactly 1 g/cm3 (cubed), find the mass of one cubic meter of water in kilograms. b)Suppose that it takes 10 hours to drain a container of 5700m3 (cubed) of water. What is the "mass flow rate," in kilograms per ...
August 22, 2010

math
yes you suppose to multiply the squared polynomial...but i was not to sure. Here is what I have for an answer... x^4-8x^3+28x^2-48x+36
July 21, 2010

science
the atomic mass of N is 14 u and that of Ca is 40 u. the proportion of n by mass in the compound Ca3N2 is what?
June 19, 2010

physics
x-rays produced in an x ray machine can have a frequency of 1.4*10^14 what is the wave length of these electromagnetic waves in nm?
June 8, 2010

Algebra
more than $7000 to reach her goal.
June 3, 2010

algebra
Yes. Answer choice A is correct. If you simply take the one factor they gave you, which is 2x+y, and multiply by answer A, which a-b, you get 2ax-2bx+ay-by
May 31, 2010

ethics
explain the ethics of public service. why must all criminal justice professionals adhere to such a set of ethics.
May 16, 2010

ethics
given the fact that there is no national religion in the US, what application do the ethics of religious testaments have on the average American criminal justice practitioner?
May 16, 2010

ethics
Explain the hierarchical rule of identities. How could such a hierarchy influence the decisions of a cia agent stationed in a foreign country?
May 16, 2010

ethics
Explain the Edwin Meese synddrome, giving examples from the fields of probation and parole
May 16, 2010

Math SAT Sheet
1.) Find the domain and range for: f(x)= 4x-20/ the square root of 36-x^2 2.) Solve the equation: log6 (x-11) + log6 (x-6) = 2 3.) Solve the inequality: x^2 - 2x - 3 is greater than 0
May 2, 2010

math
100
May 1, 2010

AP Chemistry
Given: N2O4 (g) « 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10^-3. (A) Calculate the equilibrium concentrations of both gases when 4.00 grams of N2O4 is placed in a 2.00 L flask at 25 degrees celcius. (B) What will be the new equilibrium concentrations if the volume of...
April 22, 2010

AP Chemistry
Given: N2O4 (g) « 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10^-3. (A) Calculate the equilibrium concentrations of both gases when 4.00 grams of N2O4 is placed in a 2.00 L flask at 25 degrees celcius. (B) What will be the new equilibrium concentrations if the volume of...
April 22, 2010

AP Chemistry
Thank you! For part B I did the same thing only this time I used 3.00 L. However I can't seem to find the value of x... I am coming up with 0.0191, but when I substitue that in I do not come up with 5.84 x 10^ -3
April 22, 2010

AP Chemistry
It is N2O4 ==> 2NO2 with Kc= 5.83 x 10^-3 (the arrow is actually a double headed arrow to symbolize equilibrium) Sorry for the misunderstanding! I didn't realize the arrows were like that
April 22, 2010

AP Chemistry
Given: N2O4 (g) « 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10^-3. (A) Calculate the equilibrium concentrations of both gases when 4.00 grams of N2O4 is placed in a 2.00 L flask at 25 degrees celcius. (B) What will be the new equilibrium concentrations if the volume of...
April 22, 2010

CHEMISTRY HELP NEEDED A.S.A.P
Given: N2O4 (g) « 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10^-3. (A) Calculate the equilibrium concentrations of both gases when 4.00 grams of N2O4 is placed in a 2.00 L flask at 25 degrees celcius. (B) What will be the new equilibrium concentrations if the volume of...
April 22, 2010

CHEMISTRY HELP STILL NEEDED PLEASE!!!
Given: N2O4 (g) « 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10^-3. (A) Calculate the equilibrium concentrations of both gases when 4.00 grams of N2O4 is placed in a 2.00 L flask at 25 degrees celcius. (B) What will be the new equilibrium concentrations if the volume of...
April 22, 2010

CHEMISTRY HELP DESPERATELY NEEDDED!!!
Given: N2O4 (g) « 2NO2 (g) @ 25 degrees celcius, Kc is 5.84 x 10^-3. (A) Calculate the equilibrium concentrations of both gases when 4.00 grams of N2O4 is placed in a 2.00 L flask at 25 degrees celcius. (B) What will be the new equilibrium concentrations if the volume of...
April 21, 2010

IT
If I have a steel cable pulling 5 degrees from straight down by 1500lbs. This cable goes up to the top of a 10 foot pole and is attached. Then I have a cable going out 20 feet in the opposite direction back to the ground. How many lbs. of force will be pulling at the end by ...
March 30, 2010

physics
A 5.0 kg book is sitting on a table. Which describes the force acting on the book a. there are no forces acting on the book b. the force of the table upward is greater than the force of gravity downward c. the net force on the book is zero d. kinetic energy counteracts the ...
February 26, 2010

algebra
So is the line between the -3 and 2 like a divison sign?
February 21, 2010

algebra
Evaluate and tabulate the values of y for the value(s) given. y = 2x3, for x = -3, 0, 1, 4 Can someone explain how to set this up? I do not know what the question is wanting me to do.
February 21, 2010

college english
I need to know if there are any grammatical errors in the following rewritten paragraph. Thank you. However, dictionaries are often wrong about this; in fact, by putting one word first, they are supporting a self-fulfilling prophecy. Consider the entry “ax or axe”, ...
February 5, 2010

Health Administration
Bayside insurance offers two health plans. Under plan A, Giselle would have to pay the first $60 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $250, but only 20% of the rest. For what amount of mediacl bills will plan B save Giselle ...
January 15, 2010

physics
does anyone know who conducted the experiment or a credible description of the experiment that helped prove Einstein's thought experiment: the twin paradox? as in the experiment in which one cesium-beam atomic clock stays on Earth, while another one takes flight and the ...
January 10, 2010

physics
thankyou! i just need one more now and am having a hard time..
January 10, 2010

physics
is anyone aware of evidence (preferably experimental evidence) in support of time dilation. in other words proof that it actually occurs. that is, experiments other than the one of Hafele and Keating. i just need a starting point for some research.. just a name or the title of...
January 10, 2010

Impossible chemistry problem
Kinetics Challenge Problem Consider the following reaction: CH3X + Y → CH3Y + X At 25oC, the following two experiments were run, yielding the following data: Experiment 1 : [Y]0 = 3.0 M [CH3X] Time(hr) 7.08 x 10-3M 1.0 4.52 x 10-3M 1.5 2.23 x 10-3M 2.3 4.76 x 10-4M 4.0 8...
January 8, 2010

Science Projet
johnson's
January 8, 2010

physics
Would you see the same thin film interference pattern in a film of soap surrounded by air and a film of soap on glass? Why or why not?
January 6, 2010

physics
Would you see the same thin film interference pattern in a film of soap surrounded by air and a film of soap on glass? Why or why not?
January 6, 2010

physics
What up what up what up
December 6, 2009

math
how to write two differnt word phrases for the expression t 30
December 3, 2009

Math
Thank you very much. I wrote my question incorrectly. It should be the cost of renting buses (plural). Would that be something like 350 times n/60?
December 1, 2009

Math
the total cost for a school bus rental is 350$/day. Each bus holds 60 students. Find the cost (c) of renting the school bus as a function of the number of students going on a trip (n). My answer: I have come up with relating the 350$ to n/60 but i am stuck on where to go from ...
December 1, 2009

Physics
Please someone help me I'm desperate!!!! Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 420.0 N of tension. String B has a diameter of 1.3 mm and is under a tension of 840.0N . Find the ratio of the wave speeds,VA/VB , in ...
November 20, 2009

physics
A spring has k = 88 N/m. Use a graph to determine the work needed to stretch it from x = 3.6 cm to x = 5.6 cm, where x is the displacement from its unstretched length.
November 17, 2009

Physics
Hi I'm kinda new here, and hope someone can please help me out. A person exerts a tangential force of 38.1 N on the rim of a disk-shaped merry-go-round of radius 2.74 m and mass 207 kg. If the merry-go-round starts at rest, what is its angular speed after the person has ...
November 12, 2009

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