Thursday
July 28, 2016

Search: Calculus - not sure if my work is correct?

Number of results: 67,758

physics
A 13 N force with a fixed orientation does work on a particle as the particle moves through displacement . What is the angle between the force and the displacement if the change in the particle's kinetic energy is (a) +9.19 J and (b) -9.19 J?
October 17, 2012 by Science

science
A bus travels from city x due east toward city y. If the bus travels at an average velocity of 90 km/h [E], what will be the displacement of the bus 4.5 h later? SHOW WORK PLEASE!
February 19, 2013 by Le

Algebra/Math
Can you show work por favor? :) A metalworker has a metal alloy that is 20% copper and another alloy that is 60% copper. How many kilograms of each alloy should be combined to create 80 kg of a 53% copper alloy?
February 27, 2013 by Anon

Math
5 books and 9 magazines cost $150.50 dollars altogether. 9 Books and 5 magazines cost $175.70. How much does 1 book and 1 magazine cost? Please show work
March 19, 2013 by Nomad

physics
A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?
October 27, 2014 by Anonymous

Physics
A traveler pulls on a suitcase strap at an angle 36 above the horizontal. If 555 J of work are done by the strap while moving the suitcase a horizontal distance of 15 m, what is the tension in the strap?
October 27, 2014 by Anonymous

math
Below are two pairs of points. A line goes through each pair of points. What are the coordinates for the intersection of the two lines? Show your work. Pair 1 (1,1) and (7,7) Pair 2 (0,8) and (8,0)
February 4, 2015 by Sally

GT
A GAS EXPANDS IN VOLUME FROM 26.7 ML TO 89.3 ML AT CONSTANTTEMPERATURE. CALCULATE THE WORK DONE (IN JOULES) IF THE GASEXPANDS (A) AGAINST A VACUUM,(B) AGAINST A CONSTANT PRESSUREOF 1.5 ATM, AND (C) AGAINST A CONSTANT PRESSURE OF 2.8 ATM.
July 20, 2015 by Mark

English
Hello, I'm stuck with a sentence!Is "He had been living in London since he had left Cambridge " correct? Thank you ! The correct sentence is: He had been living in London since he left Cambridge. Thank you very much Ms Sue! Could you please explain why it is impossible to have...
May 5, 2007 by Pola

health
All of the following are true regarding smoking EXCEPT: - Smoking inhibits the T cells from working properly in the lungs - Smoking is viewed by many today as being socially unacceptable - Research shows that the nicotine patch is no no more effective than a placebo - Ninety ...
November 19, 2008 by Melissa

calculus
P /|\ / | \ / | \ on this side there is an / | \ arc with A(θ) in the / | \ middle. the B(θ) /θ | B(θ)\ triangle is not equal O -------------- R to the θ triangle. Q the figure shows a setor of a circle with central angle theta. Let A(θ) be the ...
November 8, 2009 by Reen

pre calculus
find the following for the function f(x)=(x+3)^2(x-1)^2 a.) find the x and y intercept of the polynomial function f. b.)find the power function that the graph of f ressembles for large values of lxl. c.)determine the maximum number of turning pointsof the graph of f. d.) ...
April 29, 2013 by shirley

calculus
Solve the equation (the square root of x+2)+ (the square root of x-2)=(the square root of 4x-2)
May 14, 2010 by Louise

Calculus
If y=Root of(logx+root of (logx+root of logx.........infinty)...prove that dy/dx=1/x(2y-1)
June 4, 2012 by Abhishek

English
I'm writing a personal essay for an internship. Is everything in this essay clarified? Where can I expand? I don't know about you but I like living. And in order for me (and those who proceed me) to live a nice, long and happy life, we have to do something about the still ...
March 11, 2014 by Tierra

English
identify the simple subject in this sentence."There are too many people on this elevator." I think that the simple subject is people. am i correct.
July 9, 2008 by AK

English expression
1. Look at the many cards. 2. Look at the few cards. -------------------- I know that the, many,and few are determiners. Are both the sentences correct?
March 19, 2008 by John

Alegbra
Solve 1.3(7x+4)=1.8(x+5) choose the correct solution set below A){x|x¡Ü84/101} B){x|x¡Ü-84/101} C){x|x¡Ý-84/101} D){x|x¡Ý84/101}
July 18, 2009 by Patty G

math
If I make 5 out of every 18 shots I shoot, how many should I make if I shoot 100 shots? I get 27, is that correct?
September 16, 2009 by Michael

math
collect like terms. 11/13u + 3/13v - 9/13u + 14/13u answer I got was 2/13u + 17/13v is this correct?
September 21, 2009 by Anonymous

singular/plural
i want to say this word in a plural way is this the correct way boy crushes or boys crushes
April 23, 2010 by Jane

Spanish (Demmotratives)
Which one would be correct : Esta es una escultura de deity. OR Esta escultura de deity. Thank You.
May 9, 2010 by Anonymous

2nd grade
Please tell me which sentence is correct. Adrian chose him and I for the job. *Adrian chose him and me for the job.
September 28, 2010 by Anne

Maths
is this correct... (3x^2+4x-3)^2-(3x^2-x+2)^2 then is it this (9x^4+24x^3-2x^2-24x+9)-(9x^4-6x^3+13x^2-4x+4) or this 9x^4+24x^3-2x^2-24x+9-9x^4-6x^3+13x^2-4x+4 should it have brakets or not thats my only problem thanks
October 4, 2010 by Kane

A/P
The number of electrons in the outer shell of K+. I think it has 0 electrons in the outer shell since it lose some. Am I correct?
February 12, 2011 by bre

Chemistry
Write the correct chemical formula for barium nitrate. What is the ratio of barium ions to nitrate ions?
February 17, 2011 by Jazmine

Maths
M says that every number in the nineties is composite.J says that one number in the nineties is prime. who is correct?
January 11, 2012 by Rupa

English
1. Paul visited me in order to ask for a help. 2. Paul visited me in order to ask for help. (Which one is correct? Do we have to put 'a' before 'help' or not?)
February 29, 2012 by rfvv

Grammar
Which is correct? British powerful army Or British's powerful army I think the first one is right.
October 10, 2012 by Anonymous

Successive approximations
Find all root of ln(4-x^2)=x correct to 8 decimal places. List all successive approximations.
October 20, 2012 by Devin

Math
Andy said that 2,000 divided by 4=5,000 because 20 divided by 4=5 and the dividend has 3 zeros.Is Andy correct?expalin why or why not.
January 14, 2013 by Lize

Algebra
Please help! True or false and if false, correct the underlined portion. If 9>-3w-51>60 then *-3<w +17<20* Note: these ** represent the underlined portion. I didn't know how else to do it.
October 21, 2014 by AndyK

Algebra
Please help! True or false and if false, correct the underlined portion. If 9>-3w-51>60 then *-3<w +17<20* Note: these ** represent the underlined portion. I didn't know how else to do it.
October 21, 2014 by AndyK

math
The sum of three different numbers is 18. If every number is a prime number, what are the three numbers? 11+5+2 is it correct
November 3, 2014 by Lakshmi

Math
Convert 24 fluid ounces of juice to cups, if 1 cup= 8 fluid ounces. Is this answer correct? 3 cups
August 19, 2015 by Amy

reading
What is the prefix root and suffix for daintly? Am i correct? Prefix- none Suffix-ily Root- daint
September 22, 2015 by Nina

reading
What is the prefix, suffix, root for the word constructed? Am i correct? prefix-none Suffix-ed Root-construct
September 22, 2015 by 😀

reading
What is the prefix, suffix, and root for the word veins? Prefix-none Suffix-s Root- vein Am i correct?
September 22, 2015 by 🐶

reading
What is the prefix suffix and root for the word lullaby? Am i correct? Prefix-none Suffix-by Root- lulla
September 22, 2015 by 🐶

reading
What is the prefix, suffix, and root for the word resourceful? Am i correct? No prefix Suffix- ful Root- resource
September 22, 2015 by 🐶

English
Be sure to bring your skates in before the rain starts. 2.The boy clasped the money tightly in his hand. 3.What do you think you'd find over the rainbow? 4.High above the mountain, the hawks wheeled in lazy circles. 5.A fire blazed inside, welcoming the weary travelers. I have...
October 27, 2010 by Hayley

Finance
You buy some furniture for $600. The department store offers you “no interest for 8 months” after which you can pay the $600 in one lump sum. To take advantage of this deal, the store charges a $25 service fee, which is to be paid today. What rate of simple interest is the ...
September 21, 2014 by Mella

Calculus
Suppose that the machinery in question costs $104000 and earns profit at a continuous rate of $69000 per year. Use an interest rate of 9% per year, compounded continuously. When is the present value of the profit equal to the cost of the machinery? Round your answer to the ...
December 1, 2010 by Erika

Calculus
flickr.(dotcom)/photos/77304025@N07/6782789880/ Create a function that closely gives the graph given below. The function may be a piecewise function but it does not necessarily have to be a piecewise function. a. Give a brief narrative explaining what you did to create your ...
February 27, 2012 by Fatih

calculus
A wire along 1 meter is divided into three parts . The first part is formed into a circle , the second part is formed into an equilateral triangle , and the third part is formed into a square . Determine the size of each section so that the total area of the three wake formed ...
January 8, 2016 by jon

math
My 3rd grader brought home a math worksheet and I'm not sure about the answers, so I wanted another opinion. Estimate each sun or difference by rounding. 23 + 71 so, do you answer the prblem and then write the rounded numbers to the right or do you just round the answer? I ...
August 29, 2006 by Jennifer

Chemistry
A mixture of nitrogen gas and hydrogen gas reacts in a closed container to form ammonia gas. The reaction ceases before either reactant is completely consumed. At this stage the container has 3.0 mol each of all three gases; nitrogen, hydrogen and ammonia. How many moles of ...
June 29, 2013 by Blair

English Expression
There is a time table for the students. This activity is to fill in the names of subjects in the blanks in the time table. They hear sentences. after that they should write down three subject names in the blanks of the time table. Do you have fine arts on Monday? Yes, we do. ...
April 17, 2008 by John

psychology
Consider your immediate peer group at work. How would you describe authority as it exists and is exercised in this group? What causes it to be exercised this way? How can the study of psychology improve group “dynamics”?
July 17, 2008 by Arika

Ap chemistry
I'm taking ap chemistry also! I was just wondering about how much space they give you on an ap chemistry test the Multiple choice section, is it enough space for work? Do they give you scrap?
October 5, 2008 by Jaqui

math
In triangle ABC, angle C is congruent to angle A, line BC=2x-5, line AB=x+5 and line AC=x+10. Find x. The problem didn't have a triangle drawn so i drew it myself. I tried many equations but when i substitute it it didn't work.
November 16, 2008 by mark

PSYCHOLOGY
Consider your immediate peer group at work. How would you describe authority as it exists and is exercised in this group? What causes it to be exercised this way? How can the study of psychology improve group “dynamics”?
April 7, 2010 by MISSY

physics
A ball rolls off a shelf with a horizontal velocity of v. At what horizontal distance from the shelf does the ball land if the height of the shelf is h above the floor? can anyone at least give me the formulas to work with?
May 24, 2010 by Anonymous

health
What external pressures have moved mainstream medicine to accept alternative therapies? Have any alternative therapies been proven to work as well as standard treatments? If so, name the therapies.
June 9, 2010 by Sally

Physics
A block with a mass of 2.5 kg on a frictionless track collides and sticks to a stationary block with a mass of 1.75 kg and the two more together at a velocity of 3.5 m/s. What was the velocity of the first block? A. 2.5 m/s B. 7.5 m/s C. 6.0 m/s D. 0.6 m/s E. 0 m/s pls show ...
December 3, 2012 by john

physics
An electric force moves a charge of +1.85 10-4 C from point A to point B and performs 6.70 10-3 J of work on the charge. (a) What is the difference (EPEA - EPEB) between the electric potential energies of the charge at the two points?
March 12, 2013 by Anonymous

Physics
A Carnot refrigerator is used in a kitchen in which the temperature is kept at 301 K. This refrigerator uses 216 J of work to remove 2360 J of heat from the food inside. What is the temperature inside the refrigerator?
May 5, 2013 by Tim

Chemistry
The reaction b/t H2 and O2 yield water vapor and has a change of heat =-484kJ.Ho much PV work is done and what is the value of the change of E in kJ for the reaction of 0.50 mol of H2 with 0.25 mol of O2 amd atmospheric pressure of 1.00 , the volume change is -5.61.
June 30, 2013 by Angie

Chemistry
SHOW WORK A cylinder contains 98g of air at 295K. The pressure in the cylinder is 174psi. If 32g of air are allowed to escape and the cylinder is heated to 335K, what is the new pressure?
December 4, 2013 by Caitlyn

physics
What work is done by a friction force acting on an object? Select one: a. Always negative b. Always positive c. May be positive or negative depending on the choice of coordinate system d. Always zero
May 26, 2014 by jake

Personal Finance (Math)
Becka borrowed $100 from her cousin at the rate of 6% per year. If the inflation rate was 2% that year, what is her cousin's actual rate of return on the loan? How do you work this out?
September 27, 2014 by Luis

MATH help
Find the area of the following shape. You must show all work to receive credit. Figure ABCDEF is shown. A is located at negative 2, 6. B is located at negative 5, 2. C is located at negative 2, negative 3. D
October 28, 2015 by flaca

Physics
A force of 5.0 N acts on a 15 kg body initially at rest. Compute the work done by the force in (a) the first,(b) the second, and (c) the third seconds and (d) the instantaneous power due to the force at the end of the third second.
April 4, 2016 by Hammad

english
In each sentence, there is one word which is incorrect. Choose the one word or phrase that is in? 1. What is the name of the taller mountain in the world? a. Is b. Name c. Taller d. In 2. Every morning, Kristen wake up at 7.00am on the dot a. Every b. Wake c. At d. On 3. ...
June 16, 2015 by indra

MATH
Thanks for the answers but I must show the work for each problem. Can someone please help now that I finally submitted the square root correctly,thanks to drwls, and Ms. Sue. Thank you The slash (/) line represents that the number is a fraction. divide: sqrt45 / sqrt81 = ...
October 29, 2011 by PLEASE HELP

english
16. Which one of the following sentences includes an error in subject-verb agreement? A. Either June or her children are going to the movie tonight. B. Laverne, who's married, and Shirley, who's single, both walk their dogs. C. Neither Hannibal nor her pups is in the kitchen...
May 15, 2013 by alex

(pls help) physics
(Q1)How much work is done when a bucket of mass 1.5kg with 10g of water in it is pulled up from the bottom of a well 8m deep? Take g=9.8m/s2 (a)100.3j(b)2000.5j(c)901.6j(d)453.7j (Q2) A 65kg sprinter completes a 100m race in 9.83s. Calculate the average kinetic energy of the ...
July 7, 2013 by ikye

science
A car of mass 1500 kg accelerates up a hill of incline 8 degrees, increasing its speed from 4 ms to 16 ms over a distance of 90m. Assuming a total frictional resistance of 1000 N, calculte: a) the tractive effort between the wheels and the road surface b)the work done during ...
January 26, 2014 by Robert

Literature
Which of these statements includes details about setting? A. A new student in school wants desperately to make friends. B. You can get satisfaction from trying, even if you do not succeed. C. The Great Depression had put half of the town out of work. D. Nobody has seen the ...
October 8, 2014 by Alexa

physics
A child pulls a 13 kg sled across the snow at a constant 1.6 m/s [N] applying a force of 51 N [N 25 deg U]. How much work have they done after pulling for 44 m? Round answers to the nearest whole number. m=13kg Vcon=1.6m/s F=51N d=44 cos theta=25 W=Fdcostheta? I don't know how...
November 14, 2014 by me

ELA
4.   Which one of the following sentences contains two ideas joined by a connecting word?  A. Frank went fishing on Saturday he caught many fish. B. Mike ran after the bus. C. Tina arrived at work earlier than usual. D. Sally lives with her parents, although she could afford ...
May 11, 2015 by Brooklyn

Calculus
consider k(t)=(e^t)/(e^t-7) on[-7,7] Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the t -value where the function is not continuous. The function is not continous and it is not continous on 7 (which is the t=value). Am...
September 11, 2008 by George

math correction
heres another problem can someone correct it for me... find the median of: 8,10,26,23,31,34 This is what i did i place them in order from smallest to larger number then i made both sides equal so then i am left with two numbers in the middle wihich would be 23 and 26 so i ...
July 13, 2007 by student

chemistry
last one, i PROMISE A compound containing only C, H, O and Cr was subjected to combustion analysis. A sample of 10.88 mg produced 22.43 mg of CO2 and 4.59 mg of H2O. The chromium in the sample was precipitated as 14.09 mg of Ag2CrO4. Determine the empirical formula of the ...
November 6, 2007 by confused student..

arithmetic
The question in my test paper asks the following- By making use of the correct order of operations, which of the following three equations (a-c) are possible? a)(35-13)x3 b)35-13x3= c)35-(3x13) I thought the answer would be a)only, but the answer sheet says all of them. Can ...
June 24, 2008 by Sam

accounting
hey guyz, i've got this true/false question about trademark's amortization under U.S GAAP : Begining with 2002, U.S financial statements, U.S GAAP was changed to require amortization of trademarks on the straight-line basis. Did this happen ? if yes, then is the year correct ?
February 4, 2008 by Sarah

Science
Can someone tell me if I have these three correct? Are the following observations, predictions or hypothesis. I think: Birds eat worms when bugs are not available. Observation Infection is caused by bacteria. Hypothesis Honey is the food store for a bee hive. Observation
March 12, 2008 by Bethany

Algebra
HELP! an object moves in a straight line given by s=2x^2-3t where s is in meters and t is the time in seconds the object is in motion. how long to nearest tenth will it take to move 17 meters? my attempt s=2t^2-3t 17=2t^2-3t -17=-17 0=2t^2-3x-17 t=-b +or- sqrtb^2-4ac/2a t=-(-3...
March 21, 2008 by Bethany

CRT205
Please check to see if I have this correct. Premises: The desire to incarcerate juveniles with adults is based on public fear. Premises: The public fears that juvenile crime is increasing. Conclusion: However, crimes committed by youth are actually decreasing
May 13, 2008 by Karen

english
Which one of the following sentence contains a double negative? A.She did not like skating so she would not go to the party. B.James couldn't hardly stay awake after his surgery. C.No one could tell me that he wasn't afraid. D.Sherrill wouldn't tell me that I didn't win the ...
August 8, 2008 by Anonymous

ENGLISH
How is the word (turned) used in the following sentence? When it came to autumn,my thoughts often turned to the years I had spent quarterbacking my high school football team. A. Subject C.Direct object B. Verb D.Object of preposition Answer :B Is it correct
August 8, 2008 by Anonymous

Algebra
I'm having trouble with inequalities. Basically my problem is about which way the sign goes. Here's an example.. X(X+1)>2 so then it becomes X^2 + X>2 Correct? Then X^2 + X - 2>0 then factor so it becomes (X+2)(X-1)>0 And so I end up with X>-2 and X>1 as my ...
September 9, 2008 by Samantha

latin
Can someone tell me if my translation is correct? I have to write a short children's story. Here is what I have written so far: Rufus habitaret in Romam. Is es novem annos vetus. Cum ortus, gerebat bulla. Bulla defenderet is de malum.
November 21, 2009 by anonymous

Spanish
Is this correct? "Accion de gracias feliz! Nosotros deseo ustedes tenidas unasvacaciones alegres! Feliz dia del pavo!" I am trying to say, "Happy Thanksgiving! We wish you all had a joyful holiday! Happy Turkey day!"
November 28, 2009 by Lee

childhood
The major emphasis of movement programs for young children is the development of concepts. Wich of the following three major categories are they broken into? A Body,space, and time B What,who,where C Awareness, knowledge,and understanding D Movement, skill and fitness The ...
January 15, 2010 by Abbie

childhood
The major emphasis of movement programs for young children is the development of concepts. Wich of the following three major categories are they broken into? A Body,space, and time B What,who,where C Awareness, knowledge,and understanding D Movement, skill and fitness The ...
January 15, 2010 by Abbie

Science
explain role of gravity in formation of a star. as a star starts to form as a nebula, small amounts of matter collide and stick together, becoming larger masses with increasingly stronger gravity. Am I correct? Please add any other info, thanks
February 22, 2010 by Sara

Maths
Calculate the area of the surface bounded by the curves representing the functions f(x)=x²+6x and g(x)=4/(x-2). Thank you in advance If possible, help with this question aswell: Calculate f'(x)=(e^2x - ln(2)). Between ln(2) and 0. I know you integrate the function and then put...
March 10, 2010 by Anonymous

human growth and developmnet
According to research on the social clock which one of the following people would be viewed negatively by others adults? A)Laurel,who is 48 and has just had first child B)Donna,who is 47 and has just gotten her first job IS A CORRECT ANSWER?THANK YOU:))))
May 19, 2010 by vedrana

physics
For the question about friction force impeding motion. I'm sorry I tried what you wrote and did not get the correct answer. Its' not your fault. I am doing university phys and have never taken it before. I am little confused about what to do. Could you put it in steps for me...
October 15, 2010 by Anne

chemistry
A 1.325 g sample of an unknown vapor occupies 386 mL at 114 celsius and 946 mmHg. The simplest formula of the compound is NO2. What is the molecular formula of the compound? (I have N2O4, is this correct and if not, why not? We never went over this type of question in class!
October 19, 2010 by lavonne

English
I urgently need you to answer this question: 1) Is class the American English for lesson? Because students are asked to choose among three alternatives (one must be correct): a) lesson b) subject c) course If your next ....... is chemistry, physics or biology, go to the labs...
September 21, 2011 by Henry2

writing expressions
I need to write algebraic expressions: for these 6 sentecnces 1) four more shirt than s shirts 2) the quotient of p and 5 3) the sum of t tv's and 11 tv's 4) five times your quiz score q 5) nine cards fewer than e cards 6) divide the total points p by 3 heres what i got: 1) s...
October 10, 2011 by marko

Psychology
Help is really needed! I need to know if this the correct answer. I choose C Your actions are most likely to agree with one of your attitudes when a. the actions reverse an old habit. b. the attitude is held with conviction. c. you know that others disagree with your position...
December 12, 2011 by Princess

Psycholofgy
Help is really needed! I need to know if this the correct answer. I choose B Your actions are most likely to agree with one of your attitudes when a. the actions reverse an old habit. b. the attitude is held with conviction. c. you know that others disagree with your position...
December 12, 2011 by Princess

English
Hello. I will really appreciate some help from a native speaker of English. Which is correct, "this" or "that",(maybe, both?)in the following context: 1)He signed this/that (?) contract last week. 2)This/that(?)letter was prepared yesterday. Do "past" words, such as "yesterday...
January 31, 2012 by Ilma

Algebra 2
A new skateboarder's ramp just arrived at Bungey's Family Fun Center. A cross -sectional view shows that the shape is parabolic. The sides are 12 ft high and 15 ft apart. Write an equation that, when graphed, will show the cross section of this ramp. Is this correct? y=16/75(x...
December 27, 2012 by Anonymous

Education
It has been found that most individuals can quickly (over the course of a one- or two-week vacation) develop an in-depth understanding and comfort with people from other cultures as long as there is a desire to reach an understanding True or false? I think this is true, is ...
February 12, 2013 by Lor

Histoty- Help Miss Sue
All of the following are correct about nineteenth century Liberalism EXCEPT: A. having economic and political components. B. supporting the idea of civil rights. C. wanting to limit governmental power. D. opposing limiting governmental power. d
September 29, 2014 by Angela

Social Studies
May you please check if my answer is correct? Why did the system of feudalism arise during the Middle Ages? (1 point) to develop an economic system to determine jobs within a city to defend the countries from attacks to organize the household of noblemen A is my answer
September 29, 2015 by Dorathy

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