Monday
May 25, 2015

Posts by Derek


Total # Posts: 266

Linear programming
Yes, thank you so much.
June 26, 2011

Linear programming
Riverside Oil Company in eastern Kentucky produces regular and supreme gasoline. Each barrel of regular sells for $21 and must have an octane rating of at least 90. Each barrel of supreme sells for $25 and must have an octane rating of at least 97. Each of these types of ...
June 26, 2011

EMT-Basic
the answer i would say has to be reassuring him that you are going to take good care of his wife.
June 25, 2011

Chemistry
When 0.5963g of a sample containing NaNO2 and some inert material is allowed to react with excess HSO3NH2, the volume of N2 gas produced is measured. The volume of N2 gas corrected to 298.15K and 100kPa is calculated to be 0.146L. Find the mass percent of NaNO2 in the sample ...
May 25, 2011

Chemistry
NaNO2 + HSO3NH2 = NaHSO4 + H2O + N2
May 25, 2011

psychology
Actually I got it. Its psychoanalytic, humanistic, and behavior. So the question is describe three psychological models of mental illness (psychoanalytic, humanistic, and behavior) include etiological explanation and the principle therapeutic modality that evolved from the model
May 17, 2011

psychology
The problem is I can't find the name of each models
May 17, 2011

psychology
None of the links explain three models of mental illness
May 17, 2011

psychology
I have trouble understanding whats the three psychological models of mental illness include etiological explanation and the principle therapeutic modality that evolved from the model. Can anyone help me? Thanks
May 17, 2011

Physics
A gatling gun fires at a rate of 2000 rounds per minute. If the bullets travel at a speed of 800m/s, how far apart are the bullets?
May 1, 2011

physics
.98
February 20, 2011

Math
4x2squared +9 \3-(8+3)
February 14, 2011

english
k
January 3, 2011

english
no thats all it gave me and om stumpted because thats the same thing i came up with
January 3, 2011

english
A transitive verb with a direct object is in the ___ voice. a.active. b.passive. c.subjunctive.
January 3, 2011

english
they sort of help but there to long for me to read right now
January 3, 2011

english
The verbs to do , to have , and to be are verbs that can be used 1.as a main verb. 2.as an auxiliary verb. 3.as either a main verb or an 4.auxiliary verb.
January 3, 2011

chemistry
UGH! I've been working on this problem for about an hour now for my test tomorrow at WMU. No luck. =( My guess? Impossible. =P
November 15, 2010

physics
A 102.0 N grocery cart is pushed 13.0 m by a shopper who exerts a constant horizontal force of 54.0 N. If all frictional forces are neglected and the cart starts from rest, what is its final speed?
November 12, 2010

physics
a 0.1 kg mass is suspended at rest from a spring near the Earth's surface, the distance that the spring is stretched is measured to be 1.0 cm. What is the spring constant of the spring (remember the MKS units)? A mass of 2 kg is attached to a spring with constant 18 N/m. ...
November 10, 2010

physics
1. An object of mass m and initial speed v0 sliding on a horizontal frictionless surface encounters a frictionless ramp. To what vertical height will the object rise before coming to rest?
November 3, 2010

physics
An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?
November 3, 2010

physics
Will the work done by friction on an object that moves through a positive displacement be positive of negative??? negative
November 3, 2010

physics
An object of mass m=2kg travels up an incline to a vertical height of 3m. What is the work done on the object by gravity?
November 3, 2010

Physics
0.17 kg point mass moving on a frictionless horizontal surface is attached to a rubber band whose other end is fixed at point P. The rubber band exerts a force F = bx toward P, where x is the length of the rubber band and b is an unknown constant. The mass moves along the ...
November 3, 2010

AP Chem
Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...
November 1, 2010

11th grade AP Chemistry
can someone please help me! my test is on tuesday on this stuff and this is the one question that I am confused about!
October 30, 2010

11th grade AP Chemistry
Pretend you are a nuclear scientist and try to answer this bonus question. Uranium -235 (235U) is used as a fuel in nuclear power plants. However, natural uranium contains mostly U -238 (238U) and very little uranium -235. Therefore, it is necessary that the natural uranium be...
October 30, 2010

physics
What was the initial kinetic energy of the small mass before the collision? What is the kinetic energy of the two-mass combination after the collision?
October 26, 2010

physics
A 1600 kg car travels at a speed of 10.5 m/s. What is its kinetic energy? Assume that air resistance is negligible.
October 24, 2010

physics
can some one help me with coming with a better way to word theses annswers. As the angle increases, what happens to the tension in the string? *the the tension in the string will get tighter or larger for t1 What would you have to do to the angle to make the tension in the ...
October 20, 2010

physics
can some one help me with coming with a better way to word theses annswers. As the angle increases, what happens to the tension in the string? *the the tension in the string will get tighter or larger for t1 What would you have to do to the angle to make the tension in the ...
October 20, 2010

physics
1.If a mass is 15 cm from the axis of rotation and makes 25 revolutions in 10 seconds, what is its speed in m/s? 2.If m = 0.1 kg and the values above still hold, what is the numerical values of the centripetal force?
October 18, 2010

American Corrections
THE OPENING OF EASTERN STATE PENITENTIARY IN 1829 MARKED FULL DEVELOPMENT OF WHAT
October 18, 2010

Mat 126
A community college has 3,000 students and 90 instructors. The college plans that enrollment will be 3,500 next year. How many new instructors should be hired if the college wants to keep the same student to instructor ratio? 13 instructors 15 instructors 105 instructors 77 ...
October 10, 2010

science
Is a wart an example of a papule or a nodule?
September 2, 2010

science
Which of the following groups of tissue types is found in blood vessels? A. Connective, muscle, and nervous tissues B. Muscle and nervous tissues C. Connective, epithelial, and nervous tissues D. Epithelial and muscle tissues I think it's C because I don't remember ...
September 2, 2010

Health
Normal urine is ____, as indicated by its pH value. A) slightly alkaline, B) neutral, C) slightly acidic, D) extremely alkaline Normally I would post what my answer is along with the question but on this one I have NO CLUE! I can't find the answer anywhere.
September 1, 2010

algebra
Draw And Shade a figure that represents 150%.
August 25, 2010

chemistry
How many grams of ammonia are formed when 1.34 grams of nitrogen react with an excess of hydrogen(3 H2 + N2 reacts to form 2 NH3)(Answer to tenths ex. 2.5)?
July 6, 2010

Calculus
Actually he forgot to convert the kpa(1000 * N/m^2) into 1000 * N/cm^2
June 19, 2010

writing skills 1
what is the name of the common error in the sentences
May 25, 2010

religion
what role does religion play in society in North Korea?
May 16, 2010

math-please help!
4/3x+2/3x
April 25, 2010

Physical Science
a player uses a hockey stick to increase the speed of a 0.200 kg hockey puck by 6 m/s in 2 seconds is the acceleration 3 m/s2?
April 14, 2010

math
7[3m-(m+6)] G.T. -6(M-1)
March 21, 2010

Math
Find an equation of a plane through the point (1, 5, 1) which is orthogonal to the line x=3+5t y=5-1t z=-1+4t in which the coefficient of x is 5.
February 1, 2010

maths
iam a common multiple of 3 & 7 my digits have a total of 9
January 24, 2010

Calc
0 and 1
December 2, 2009

10th grade social studies
Commonly sorry.
November 17, 2009

10th grade social studies
How does trade and offering cominly diverse choices INCREASE diversity? Thanks Ms.Sue for answering my last question! ^^
November 17, 2009

10th grade social studies
I don't get what "What message do these 2 sources present about the impact of globalization on identity?" means..
November 17, 2009

English
I want to know all the Rhetorical and Figurative Devices and Examples in the Essay Hidden Lesson by David Suzuki
October 26, 2009

college physics
tsrusjnsrthnb
October 11, 2009

12th grade Social Science
Can anyone help me with these questions? How was the culture of the Baby Boom so different from that of previous generations? Why are members of Generation X frustrated with Baby Boomers? What are some of the important impacts of Generation Y on the economy? What are the main ...
July 6, 2009

12th grade- Social Science
Men who are more socially isolated are more likely to abuse their wives than are men who are socially integrated. Can you not do this topic because I just need an example of another topic in the format above.
July 3, 2009

12th grade- Social Science
I need help in making a hypothesis statement for a certain topic, I chose at school. Can anyone give me an example of one? Here is the format, my teacher wants: (The - represents the boxes, he put for each) TOPIC: - - OVERVIEW OF TOPIC: A brief description about your topic...
July 3, 2009

12th grade English
Thank you so much, this really helped me a lot.
July 2, 2009

12th grade English
How does Saki in "The image of the lost soul" use descriptions of places to reach desired effect in story? Can anyone tell me how? an example form the text would be helpful
July 2, 2009

PC Basics
16
March 24, 2009

Math
find the unit rate for 9.25 for 18 pounds
February 9, 2009

Algebra
Is there really any difference between vertical asympotes and domains in functions? Are they always the same numbers? Thanks
January 22, 2009

algebra
How can you tell whether a function is rational or not? And how do you determine holes of a graph? Thanks!
January 22, 2009

probability and statistics
a set of 10 cards consists of 5 red cards and 5 black cards. the cards are shuffled thoroughly and i choose one at random, observe its color, and replace it in the set. the cards are thouruoghly reshuffled and i again choose a card at random, observe its color and replace it ...
November 24, 2008

Urgent Chemistry!!
1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is w = -101.325 J. I am unsure how to get this answer. Can someone...
November 16, 2008

Chemistry
1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is w = -101.325 J. I am unsure how to get this answer. Can someone...
November 16, 2008

Chemistry Confusion!
1 mol of an ideal gas expands under isothermal conditions (T=298.15K). The initial pressure and volume is 2.00 atm and 1.00L respectively, and the final pressure is 1.00 atm. Find the expansion work. The answer is  w =  -101.325 J. I am unsure how to get ...
November 15, 2008

college-Intermediate Microeconomics
The Lump Sum Principle In the 1980s Margaret Thatcher was the British Prime Minister. She was very popular and e ective until she pushed for the idea of a so called lump-sum tax. The lump-sum tax is one in which every citizen pays a single xed payment. Consider the ...
October 8, 2008

physics
A ball is thrown vertically upward with an initial speed of 20 m/s. Two seconds later, a stone is thrown vertically (from the same initial height as the ball) with an initial speed of 24 m/s. At what height above the release point will the ball and stone pass each other?
September 16, 2008

math
solve each of the following equations by the square root method and show your work 4x²-20=0
September 7, 2008

math
solve each of the folowing equations by factoring and show your work x²+x²=13x²-36
September 7, 2008

math
(x+1)(4x©ø-4x©÷) 1(x+1)+4x©÷(x+1) (1-4x©÷)(x+1) 1-4x©÷=0 -4x©÷+4 0+4=4 ¡î1=¡î4x©÷ 1=2x
September 7, 2008

math
solve each of the folowing equations by factoring and show your work x²+x²=13x²-36
September 7, 2008

math
solve each of the following equations by factoring and show your work 12x² + 15x + 10= -10x -2
September 7, 2008

math
solve each of the following equations by completing the square and show your work x² + 6x + 24=0
September 7, 2008

math
solve each of the following equations by completing the square and show ur work x²-4x=32
September 7, 2008

math
solve each of the following equations by the square root method and show your work (3x + 2)²=8
September 7, 2008

Mason
solve each of the following equations by the square root method and show your work 4x²-20=0
September 7, 2008

URGENT! Last calculus question!
Hey! So, I was wondering if someone could answer this. I am mad studying for my exam and I still have a few questions left that I just don't have time to answer, and the assignment is due tomorrow. Thanks and here is the question: Use calculus and algebraic methods to do a...
July 29, 2008

Calculus (final question I promise)
1. Use calculus and algebraic methods to do a complete analysis (i.e., intercepts, critical points, intervals of increase and decrease, points of inflection, intervals of concavity, local maximum or minimum points) for each of the following functions and then sketch the graph ...
July 28, 2008

Essay
So, what is your question/problem with this?
July 25, 2008

Urgent CALCULUS
So, I haven't posted in a while...but now I am stummped! Only question I can't get today! A team of students seeks to make a flag representing their commitment to the earth. They will be using a green triangle inscribed in a yellow semi-circle. Find the maximum area of...
July 25, 2008

Calc.
What function would have a derivative of ƒ′(x) = 12x2 + 4x − 10? Explain how you arrived at your answer...I believe the answer is this: f(x)=4x^3+2x^2-10x...and I got this using the power rule and multiplying. Thanks.
July 16, 2008

Calc.
How do I deal with square roots and derivatives? Like: f(x)= Sqrtx....the derivative. find
July 16, 2008

Calc.
What is the derivative of this: not sure because of the pi.... f(x)=x^pi Thanls.
July 16, 2008

Calculus
I figured out e but I am confused for the rest of the equation.
July 15, 2008

Calculus
For the decomposition of Carbon 14, find the age of a prehistoric cave painting discovered in the Lascaux Caves in southern France if the amount of Carbon 14 has decayed to 14.29%...again using calculus formulas. Not sure how to use this equation (content section of course ...
July 15, 2008

Calc.
Nvm, I figured this out myself. :)
July 15, 2008

Calc.
My other questions I didn't understand what e was either. My calculator does not allow me to perform the function that you told me. Please further explain.
July 15, 2008

Calc.
Using calculus: If you invest $5000 compounded continuously at 4% p.a. how much will this investment be worth in 5 years? I am not sure what e is. Should my equation be this: A(t)=Pe^rt A(t)=(5000e^(0.04)(5)) Thanks.
July 15, 2008

Calc.
yes....f(a+h)-fa)/h
July 14, 2008

Calc.
For the function ƒ(x) = x^3 - 8x + 3, calculate where a = 5 and h = 2. Simplify before substitution (the simplifying is where I am having problems...not sure if my answer is right). Thanks. Using the limits equation.
July 14, 2008

Calc.
verify that lim h>0 (e^x+h -e^h)/h=e^x and explain how this illustrates that ƒ′(x) = ln e • ƒ(x) = ƒ(x)... The notes for this section suck big time, so I really don't know where to begin with this. Thanks!
July 14, 2008

Calc.
Determine the interaction of the line of intersection of the planes x + y - z = 1 and 3x + y + z = 3 with the line of intersection of the planes 2x - y + 2z = 4 and 2x + 2y + z = 1.
July 10, 2008

Calc. for Reiny
this can be done by projections of two vector. recall that the scalar projection of vector b on vector a is a∙b/│a│ so let's find a point on the give line, e.g. the point B(6,0,1) (I let t=0) draw a perpendicular from your given point P(1,-5,2) to meet ...
July 10, 2008

Calc.-Blanking!
wait actually I don't think you can do that...but then I have a problem. I am supposed to find the distance of the point to the line or something like that of the point (1,-5,2) and the line r=(6,0,1) + t(3,1,2) but I thought you needed the scalar equation in order to find...
July 9, 2008

Calc.-Blanking!
Wow, so it is late and I can't think! How do I put this into scalar form: r=(6,0,1) + t(3,1,2)? thanks!
July 9, 2008

Calc.
Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect in a line, determine a...
July 9, 2008

Calc.
Use normal vectors to determine the intersection, if any, for each of the following groups of three planes. Give a geometric interpretation in each case and the number of solutions for the corresponding linear system of equations. If the planes intersect in a line, determine a...
July 9, 2008

Calc.
I am so confused with this last part of the unit! What in the world is going on: Use normal vectors to determine the interaction, if any, for each of the following pairs of planes. Give a geometric interpretation in each case and the number of solutions for the corresponding ...
July 9, 2008

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