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February 1, 2015

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

Number of results: 58,550

French
Your new pen pal from Guadeloupe is curious to find out if the seasons change where you live and what the weather is like. In a note to your pen pal, tell what the weather is like during the four seasons in your area. Give a typical temperature for each season using the ...
November 26, 2009 by Anna

social studies
1. On-the-scene coverage of a natural disaster is an example of the press’s role of a. watchdog. b. signaler. c. partisan advocate. d. common-carrier. e. interpreter. 2. The news media are usually guided by events that a. are timely. b. affect large numbers of people. c. occur...
October 8, 2010 by Anonymous

physics
Can you get more force out of a lever than you put in? Can you get more work out of a lever than you put in. Explain
October 15, 2008 by Anonymous

Geometry
*Find the value of the variable and LM if L is between N and M 9) NL = 5x, LM = 3x, and NL = 15 *Find the value of the variable and ST if S is between R and T 28) RS = 7a, ST = 12a, RS = 28 how do you work these out?
August 18, 2009 by Jillian

College Physics
The graph shows the force exerted on an object versus the position of that object along the x-axis. The force has no components other than along the x-axis. If z is an increment of 25, then what is the work done by the force on the object as the object is displaced from 0 to 3...
October 13, 2009 by Megan

physics
A force F is exerted by a broom handle on the head of the broom, which has a mass m. The handle is at an angle  to the horizontal, as shown below. What is the work done by the force on the head of the broom as it moves a disacross a horizontal floor?tance d
March 2, 2010 by Big T

physics problem that i neeeed help with!
A person lifts a 3.8 kg cement block a vertical distance 0.9 m and then carries the block horizontally a distance 7.3 m. Determine the work done by the person and by the force of gravity in this process. ? J (by person) ? J (by force of gravity)
April 15, 2010 by brittany

African American 1930's
During Christmas dinner (1930's), did African American's have a limited supply of dishes, (African Americans who had to work in the fields)? Could you name some dishes they had?
May 17, 2010 by Anonymous

math
there is a water resivoir benteth a circular garden 2 supply a fountain n the garden.the resivoir has a 26-inch diameter.the garden has a 12 foot diameter.how much of the garden does not contain the water resivoir? plz show work
May 19, 2011 by charolette

Algebra II
What was the percent growth in Home Depot's sales from 2002 to 2006. 2002 net sales was $52.1 billion 2006 net sales was $90.8 billion do the work in scientific notation I do not understand how to do this, please I need help.
September 28, 2011 by Katy

math
carol works part time at 2 stores she earns 8.25 an hour at the flower shop, and 7.50 at a diner. last week carol earned 63.75. carol worked 5 hours at the flower shop, how many hours did she work at the diner?
January 30, 2013 by bryce

math(Ms.Sue)
Josh poured 38 gallons of water into 6 buckets. He poured the same amount into each bucket. How much water did Josh pour into each bucket? please show your work.
September 5, 2013 by lidia

Algebra 1
You work in the local mailroom at a college. One of your duties is to sort local mail from all of the other mail. You can sort 8 pieces of mail in 10 seconds. How many pieces of mail should you be able to sort in 45 minuets?
October 3, 2013 by ABBY

algebra 1
You work in the local mailroom at a college. One of your duties is to sort local mail from all of the other mail. You can sort 8 pieces of mail in 10 seconds. How many pieces of mail should you be able to sort in 45 minuets?
October 3, 2013 by kayla: HELP

Math
Jameka bought a $60.00 necklace on sale for 40% off its regular price. Caitlyn bought an $80.00 necklace for 55% off its regular price. Who paid the least amount for their necklace? Show your work and explain your reasoning
March 31, 2014 by Mae Falcon - Myers

Math- urgent
Harry buys American cheese at the deli. He buys 1/4 pound at the cost of x dollars per pound. If he pays $12.25 for 2.5 pounds of cheese, what is the cost per pound? Please show your work.
April 27, 2014 by Sarah

physics
A cylinder of gas is compressed by a piston from an initial volume of 125litres to a final volume of 90 litres.The compression occurs at constant pressure,and the work done on the gas by the piston is 10^4J.What is the gas pressure during the compression?
November 11, 2014 by takunda

Algebra
How would i complete these problems? 1. (√6mn)^5 2. ^3√16x - ^3√2x^4 3.^4√x • ^3√2x 4. ^3√72x^8 5. √63a^5b • √27a^6b^4 and are these problems correct? 6. √2025xy/3√3 = 15√xy/√3 7. 3√18 + 8√50...
February 17, 2008 by Bretagne

ALGEBRA
I believe this answer to be correct. Just need to know. -13<= 4x-2<=-1; First equation:-13<=4x-2: ADD 2 TO BOTH SIDES; -13+2<=4X-2+2; -11<=4X; DIVIDE BOTH SIDES BY 4; X|-11/4<=X; Second Equation: 4x-2<=-1 ADD 2 TO BOTH SIDES; 4X-2+2<=-1+2 4X<=1/4 X|X...
December 13, 2010 by Amy

Chemistry
What is the correct rate law for the following reaction? 2 NO2(g) + F2(g) → 2 NO2F(g) rate = kf(NO)2 rate = -kf(NO2)2(F2) rate = kf(NO2)2(F2) rate = -kf(F2) Not enough information is available to determine the rate law.
May 16, 2011 by dude

Math
On a nine-question true-or-false test you randomly guess at the answers. What is the probability that you get all nine answers correct? What is the probability that you get all nine answers wrong?
June 4, 2012 by Stryke

Math
Rationalize the denominator. Assume that all expressions under radicals represent positive numbers. The square root of 3y^4 to the third root divided by the square root of 15x^4 to the third root. Here is what I have so far: I multiplied. The square root of 100x^2 to the third...
May 21, 2010 by B.B.

Calculus
A fence 5 feet tall runs parallel to a tall building at a distance of 7 feet from the building. What is the length of the shortest ladder that will reach from the ground over the fence to the wall of the building? [Hint: Determine the length of a ladder that touches the ...
June 22, 2009 by Z32

Calculus - dimensions of a box?
A rectangular box with a square bottom and a volume of 256 cubic feet is to be constructed. The top and bottom cost $ .10 per square foot to make and the four sides cost $ .05 per square foot to make. Find the approximate dimensions of the box which would minimize its cost.
February 12, 2011 by Amy

Calculus
By Kirchoffs voltage law the sum of the voltage in the circuit. Consider the circuit with variable resistor R. 5V 10ohms R A. find a relationship between I and R in the circuit using E=I R and kirchoffs voltage law. B. the power to a resistor is given by I^2R watts write P as ...
September 26, 2012 by kieran

plz explain or translate this question!!!
How were things resolved? what does this sentence mean? how do you write your answer for this Q? The sentence means there were two or more differing opinions, measurements or explanations about something. You are supposed to find out which is correct, or explain how the ...
December 7, 2006 by ashlee

Physics
A car with good tires on a dry road can decelerate at about 5 m/s^2 when breaking. Suppose a car is initially traveling at 65 mph. What is the stopping distance?(give answer in meters and in feet) I changed 65mph into 29.05m/s. so I would use d-d_0 = (v^2 -v_0^2)/2a and when I...
September 12, 2007 by Tammy

Physical Science
Hello, Can some one please tell me if B is the correct answer? Thank You Which one of the following groups of chemical compounds is composed entirely of organic compounds? A. C2H4O, CH2O, CaSO4, C3H5(OH)3 B. C6H6, C2H5OH, C6H5CH3, C3H5(NO3)3 C. C2H2, CH4, CaCl2, CaCN2 D. ...
March 6, 2008 by Mandi

french
Passe compose again, last time SraJMcGin, you give me 4 situations where Past particples agree in gender and number, I get that part, I want to ask for verbs that need to agree, do you always just add e or s (feminine and plural) no matter what the verb's ending is? Like ...
April 3, 2008 by Janice

psychology
You are likely to be observing the rooting reflex when the baby A turns his or her head and mouth toward a stimulus tha brushes his or her cheek B sucks at almost any object that touches his or her mouth C voluntarily seeks out objects to grasp and to hold D lifts his or her ...
January 7, 2009 by tzeni

chemistry
1) Arrange the metal-metal ion reactions (aluminum, copper, nickel), M^n+ + ne^- --> M^0, in a column, in order of decreasing ability as oxidizing agents... What I put was : Al^+3 + 3e^- --->Al Ni^+2 + 2e^- --->Ni Cu^+2 + 2e^- --->Cu 2) Also, explain your reasoning...
March 11, 2009 by danny

english
please can someone answer this . i'v posted it so many times but no one answers Which is not an example of an idiom found in "Miss Rosie"? a. "when I watch you" b. "[you] used to be called" c. "waiting for your mind" d. "I stand up" i know that idiom is an expression that is ...
July 5, 2009 by y912f

psychology
Which of the following statements about rewards is true? A)identify what you are rewarding in a behavior,because rewards are meaningless if not tied to specific behavior B)You can never reward a child too much C)rewards are essential in boosting self-esteem,because intrinsic ...
September 23, 2009 by vedrana

math
Suppose that pizzas can be ordered in four sizes (small, medium, large, and Illini-size), with three crust choices (thin, thick, and Chicago style), four choices of meat (sausage, pepperoni, hamburger, and none) and two types of cheese (regular or double). How many different ...
September 28, 2009 by chandice

Disorders
I need to know if my diagnoses of the following symptoms are correct before I start my research: Past several weeks that he is having more bruises, or ecchymosis, all over his body. After coughing this morning, he noticed tiny red marks all around his eyes. I believe the ...
January 23, 2010 by Online Bus

geography
1. What is the name of the bay that is connected to the Atlantic Ocean by the Hudson Strait? The Hudson Bay 2.What is the body of water that separates Iran from Saudi Arabia? The Persian Gulf 3. Which of the following cities is farthest north: Nebraska, Iowa, South Dakota, ...
November 14, 2011 by Reed

US GOV
Government can lawfully prevent a political rally from taking place a. under no circumstances; people have an unconditional right to express their views. b. when the rally would require unduly expensive police protection. c. when the views of those holding the rally are ...
December 5, 2011 by HM

calc
1)Convert 1/20 of a circle to both degrees and radians. All I have is 9/180 is what I come up with. 2) what fraction of a circle does 3pi/4 represent? Is 1/4 correct? 3) a ferries wheel has cars which move at 1.5mph. If the diameter of the wheel is 600 ft, how long will it ...
April 28, 2012 by ALISON

Soil Chemistry
Gasoline producers add oxygenated chemical compounds to reduce the amount of carbon monoxide produced when the fuel is burned. Methyl t-butyl ether (MTBE) is one such oxygenate that is no longer used because of health and environmental concerns. what are the correct exponents ...
July 5, 2014 by John

Analytical CHM
Calculate the theoretical amounts of 0.1000 M NaOH titrant used to titrate 0.8 and 0.9 g KHP Please show step by step solution , i need the correct significant figures and units to finish up the rest of the lab correctly i found the answer but for some reason ,using my answers...
September 15, 2014 by Jessy

Spanish
I need help with the subject verb agreement for this assignment: 1. It eats 2.It hears 3.It attacks 4.It doesn't eat 5.It doesn't hear 6.It doesn't attack 7.They eat 8. They hear 9. They attack 10.They don't eat 11. They don't hear I'm using the powerglide Spanish 1 system to ...
February 20, 2007 by Aubrey

algebra
1) The formula for the final amount A in an investment with principal P and interest I (A=P+I. Determine the principal if A is $7,000.00 and I is $400.00 - is my answer correct 7,000.00 = P + 400.00 P = 7000.00 - 400 P = 6600.00 2) There is a diagram of figure and am asked to ...
October 17, 2007 by karen

English
Hello. I will really appreciate some help. 1)Is the preposition "in" OK in the sentence "they had a conversation in which they agreed ..."? 2)Is it possible to say "they met tete-a-tete"? If yes, which order is OK "they met in London tete-a-tete" or "they met tete-a-tete in ...
March 9, 2012 by Ilma

science
The equilibrium constant (Ka) for Reaction 3 at 25 °C is 1.80 × 10−4 mol dm−3. Calculate the equilibrium concentration of hydrogen ions if the concentration of formic acid at equilibrium is 0.00500 mol dm−3. (Show all of your working and give your answer to ...
February 10, 2013 by Mark

math
A test consists of 120 questions. Each correct answer, each wrong answer and unanswered question in the test carry 1 Mark, 0.5 Mark and 0.25 Mark respectively. Find the maximum number of questions that the candidate could have answered wrongly in the test, if he scores 50 ...
November 18, 2014 by sandra

Precalc/Trig
2 roads intersect at an angle of 60 degrees. A friend's mail box is 434 feet from that intersection and your mailbox is on the other road and is 525 feet from the intersection. How far is it from your mailbox to your friend's mailbox? I got 1016.66 feet, but that is wrong. ...
December 4, 2014 by Heather

Chemistry
what particles are free to drift in metals? cations, electrons, neutrons, or protons? and what is the SI unit of mass? is it kilogram kg is correct for the SI unit of mass. Electrons conduct electricity; therefore, the electrons must be free to move in metals.
January 9, 2007 by Bryan

algebra
1. The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C=6000/(200-2x). a. What is the cost to remove 75% of the pollutant? C=6000/(200-2(.75)) C=6000/(200-1.5) C=6000/198.5 C=30.2 Is this correct? This is stumping me to: For what value is this ...
April 8, 2008 by Jack

Algebra
Hi! I was wondering if anyone might be willing to check my answers for these... I have a suspiscion they are wrong, but I don't have any correct answers to compare them against. If I got them wrong, would you mind giving a brief explanation? Thank you for your help! (x^2-1)+(-...
October 29, 2008 by Cora

Spanish
Choose the grammatically correct sentence. A. He aquí una blanca cosa. B. He aquí las cosas blancas.<<> my answer C. He aquí unas cosas blanca. D. He aquí la cosas blancas. Can you explain to me the difference between the choices.
March 18, 2011 by anon

Physics
A hydrogen atom initially in its ground state (n = 1) absorbs a photon and ends up in the state for which n = 3. What is the energy of the absorbed photon? *I found the energy of the atom at the ground state and at n = 3. I subtracted the final from the initial to get a value ...
April 19, 2011 by Joe

Decimal word problem
Nadia's diet can says she can eat 3.5 ounces of chicken nuggets. The package weighs 10.5 ounces and contains 15 chicken nuggets. How many nuggets can Nadia eat? I've tried this question out, and I divided 10.5 by 3.5? Is that correct?
October 24, 2011 by Alex L.

math
My son is doing this in 6th grade math class. Mr. Weiss started painting the kitchen at 8:45 am and finished painting at 12:00 pm. About how many hours elapsed between the time he started painting and the time he finished painting the kitchen? Answers are 2h, 3h, 4h, and 5h. ...
October 6, 2011 by m

calculus
A dam 15 m high holds the water in reservoir . For safety reasons , the water level is maintained at a height 3 m below the top of the dam. At best of the dam , engineers have installed a vertical door in the shape of an equilateral triangle with sides of length 3 m , ...
January 30, 2011 by hussain

grammar
What is the correct way to write this sentence. Each of the instructors are attending the conference next weekend. or Each of the instructors is attending the conference next weekend. Each ... is ... Each is always singular. =) Thanks for the help!!!!
February 20, 2007 by mike

math
write the equation 5x plus y equals 2 which equals 0 in normal form. my ans. was y equals 5 plus negative 2 or y equals 5 plus 2. if im wrong plus correct and explain why im wrong thank you.
April 10, 2009 by lily

English
1. We played speaking English at the camp. 2. We practiced speaking English at the camp. (Are both expressions correct? Any difference? Does #1 mean "We played while we spoke English."?)
June 3, 2009 by John

Finance - market varience
Find how many times the market variance is of the SD of a portfolio half in the riskfree security and half in the market. The market variance is .25 times (.5 x .5 = .25). Is my answer correct?
February 24, 2010 by Anonymous

English
1. I saw something very funny. 2. I saw something very fun. (Are both expressions correct? What is the difference between 'funny' and 'fun'? Thanks a lot.)
December 10, 2010 by rfvv

Math 7 - HW Question Check
7. Which number is an irrational number? a) Square Root 3 (i can't make the symbol) b) - 13.5 c) 7/11 d) 1 over square root 9 (can't make the symbol) My Answer - D Am I correct?
April 15, 2012 by Laruen

Chemistry
Rank the following from most polar to least polar (aspirin, caffeine, ibuprofen, acetaminophen): I am getting caffeine>acetaminophen>aspirin>ibuprofen. Is that correct?
September 2, 2012 by KC

English
1. Complete the following sentences which compares yourwelf with your partner. 2. Complete the following sentences which compares you with your partner. (Which one is correct? Do we have to use 'yourself' or'you'?)
November 21, 2012 by rfvv

Economics
Suppose the consumer has convex preferences, and we know (2, 4) ~(6, 1). Is the statement (4,2.5) >=(6, 1) correct? What about the statement (4, 2.5)> (6, 1)? Suppose now the consumer has strictly convex preferences, and and we know (2, 4) ~ (6,1). Does any of your ...
February 9, 2013 by raina

Grammar
Development-environment-figures. (Recent) Answer:environment and figures Situation-quantity-interest. (Sufficient ) Answer:quantity and interest Now is it correct ??
June 7, 2013 by Maryam

Grammar
Solution-dependence-alternative (find) Answer:alternative and dependence Resources-technology-stocks(deplete) Answer:Resources and stocks Now is it correct ??
June 7, 2013 by Maryam

math
Tia collected $10 for a walkathon and $ 5 from each friend. What is the total amount of donations she collected from 4 friends? Is my answer below correct? Friend - 1,2,3,4 Donations - $5, $5, $5, $5 = $20 Answer is $20 from 4 friends.
January 14, 2014 by henry

math
Tia collected $10 for a walkathon and $ 5 from each friend. What is the total amount of donations she collected from 4 friends? Is my answer below correct? Friend - 1,2,3,4 Donations - $5, $5, $5, $5 = $20 Answer is $20 from 4 friends.
January 14, 2014 by henry

English
Which would be grammatically correct: We both had a goal and objective in mind to get our jobs done. or We both had a goal and objective in mind to get the job done. Thanks!
September 24, 2014 by Tim

chemistry
which orbitals in the molecular orbital diagram contain the lone pair electrons around O? My answer: one of the lone pairs on oxygen exist in an "s" orbital. two of the lone pairs exist in "p" orbitals not involved in bonding. -is this correct.
May 28, 2008 by Andrew

statistics
population mean=42.6 standard deviation=12 n=16 M=34.4. Is this mean a reasonable outcome for a sample of n=16, or is this sample mean very different from what would usually be expected? I obtained a z -score of -2.73. Thus, that would make the sample mean a reasonless outcome...
May 29, 2008 by Lindy

helpmplz
which ststement does NOT describe prescripitivists? A. Language should be recoreded,not judgement. B. Language use should follow strict rules. C. Language use should never change D. Language use should be judged and evaluated. .The answer i choose is c. .Am i correct?.
February 13, 2010 by brit brat

Algebra uno check+ help?
So, I've got these problems: To tell which form the equation is in. 1)2x+8y=-3 I think this one is standard form. 2)y=-5x+8 I think this is slope intercept form. 3)y+4=2(x-6) I think this is also slope intecept form. Could somebody tell me if my answers are correct, if not ...
November 29, 2010 by Allyson

Math
How many cubic centimeters of ice cream can an ice cream cone (within the cone) hold if its height is 7 centimeters and the diameter of its base is 4 centimeters? Give solution accurate to the nearest hundredth. Include correct units with your solution
May 11, 2011 by Geena

phy
An archer shoots an arrow horizontally at a target 14 m away. The arrow is aimed directly at the center of the target, but it hits 52 cm lower. 1-What was the initial speed of the arrow? ** is this the formula for finding t : y=h-1/2(gt^2)= 00.52-1/2(9.8t^2) t=0.3258 s initial...
July 6, 2011 by pop

Stat
A student takes a 10-question true-false and randomly guesses the answer to each question. Suppose a correct answer is worth 1 point, an incorrect answer is worth -.5 points. Find the probability the student gets 7 or more points.
May 4, 2013 by alice

Chemistry
In order to make 500.0mL of a 1.835 M MgCl2 solution, then _______g of MgCl2 is needed. Moles of MgCl2= (1.835M)(0.5L)=0.9175mol Molecular Weight of MgCl2= 95.211 g/mol (0.9175mol MgCl2)(95.211 g/mol)= 87.36g of MgCl2 Did I do this correct?
July 30, 2014 by Queen

Elem. Ed.
Can you help with this question? Which statement is not true when a teacher exhibits defensive behavior during a hostile conversation with a parent? 1. it may lead to an explosive situation. 2. it will tend to escalate tension. 3. it suggests to the parent that their ...
May 9, 2007 by Jill

Pre Calculus
A bank teller is counting the total amount of money in a cash register at the end of the day. There is a total of $2600 in denominations of $1, $5, $10 and $20 dollar bills. The total number of paper bills is $235. The number of twenty dollar bills is twice the number of $1 ...
February 19, 2013 by Jona

Math
can you please let me know if these are correct: 1. 5 5/6 x 2 4/5 = 16 2. 2/3 divided 3/5 = 1 1/9 or 2/5? 3. 7/12 divided 2/3 = 7/8 4. 3 1/2 divided 3/4 = 4 2/3 or 2 5/7 5. 4 2/3 divided 7 = 2/3 6. 4 1/5 divided 1 2/5 = 3 7. 2/5 x 5/14 = 1//7 8. 2/3 + 1/7 = 17/21 OR 12/21
November 22, 2011 by JOSH

Cultural Diversity
Will someone please check my answer to make sure I have chosen the most appropriate choice. 1. Gabriella speaks Spanish at home with her family and friends. She attends public school where she is learning some English and is instructed in English for all of the subjects. ...
September 4, 2007 by Raven

Statistics - Probability
Viruses reach networks by requests for communication that are identified as packets. A security system can detect them if at least one such packet is observed by a network sensor. Assume that the probability of observing a single packet sent from a new virus is .001. The virus...
November 7, 2007 by Jason

Physics
I need help solving this please! I think that for part (b) I can use energy and wavelength to solve for frequency and the one with the highest frequency is the most damaging, but I'm not sure what to do for part (a). You want to study a biological specimen by means of a ...
August 15, 2010 by Brianna

Grammer Please Help!!
Can you help me correct theses sentences with punctuation or tell me if its correct or not.... 1.)Johnny Cash was one of only a few musicians. Who have ever been inducted into both the rock and country halls of fame. 2.)Georgia O'Keefe was an American painter from Wisconsin. ...
May 2, 2013 by Tianna

physics
You are given a vector in the xy plane that has a magnitude of 94.0 units and a y component of -44.0 units. A. What are the two possibilities for its component? For this part I got x = 83.1 and -83.1 B. Assuming the x component is known to be positive, specify the vector V ...
July 21, 2011 by victor

Spanish-Please check
1.¿Comó te sentiste ayer? Yo sentí muy bien. 2. ¿Adonde fuiste ayer? Yo fui al cine. 3. ¿Adonde fue tu mama ayer? Mi mama fue a la tienda. 4. ¿Visitaste a tu familia la semana pasada? Sí, yo visité mi familia la semana pasada. 5. ¿Donde estudiaste ayer? Yo estudié al escuela. ...
November 30, 2011 by Mia

Physics
A 153 g bullet is fired from a rifle having a barrel 0 . 794 m long. Assuming the origin is placed where the bullet begins to move, the force exerted on the bullet by the expanding gas is F = a + bx − cx 2 , where a = 12600 N, b = 8420 N / m, c = 10100 N / m 2 , with x ...
November 15, 2013 by Justin

Physics
A 153 g bullet is fired from a rifle having a barrel 0.794 m long. Assuming the origin is placed where the bullet begins to move, the force exerted on the bullet by the expanding gas is F = a + bx − cx^2 , where a = 12600 N, b = 8420 N/m, c = 10100 N/m^2, with x in ...
November 18, 2013 by Justin

social studies(updated answers)---Mrs.Sue
6.C 6.How did European rule in South America change the people of the continent? A. European missionaries introduced religion. B. European colonists brought diseases that killed millions of natives. C. European conquistadors incited conflict on the continent. D. European ...
March 17, 2014 by Kayla

chemistry
A sample of O2 gas is collected over water at 23C at a barometric pressure of 751 mmHg (vapor pressure of water at 23C is 21 mmHg). The partial pressure of O2 gas in the sample collected is: (a) 21 mmHg (b) 751 mm Hg (c) 0.96 atm; or (d) 1.02 atm The answer is (c). Not sure ...
November 2, 2011 by Holly

Calculus
A 0.2 ml dose of a drug is injected into a patient steadily for 0.75 seconds. At the end of this time, the quantity, Q, of the drug in the body starts to decay exponentially at a continuous rate of 0.2 percent per second. Using formulas, express Q as a continuous function of ...
February 6, 2011 by Abigail

calculus
a man on a dock is pulling in a boat by means of a rope attached to the bow of the boat 1ft above the water level and passing through a simple pulley located on a dock 8ft above the water level. if he pulls in the rope at a rate of 2ft/sec, how fast is the boat approaching the...
October 10, 2012 by Anonymous

calculus
Choice 1: Payments of $ 2600 now, $ 3200 a year from now, and $ 3880 two years from now. Choice 2: Three yearly payments of $ 3200 starting now. Modification: Interest is compounded continuously instead of annually. (a) If the interest rate on savings were 4.86 %, which would ...
June 27, 2014 by Anonymous

pre-calculus
List the possible rational roots of each equation. Then determine the rational roots. 6x^4+35x^3-x^2-7x-1 The answer in the back of the book is: -1/3 and 1/2 I know that I'm supposed to use Descartes rule of signs. I found that there was 1 positive zero and 3 or 1 negative ...
October 25, 2009 by Carl

Science
I am doing an experiment about rust. I need a way to measure the rust that grows on various nails submerged in glasses of water (and other stuff). My plan is to use an analytical balance, measure nails with no rust and the nails after rusting and the second weight should be ...
November 25, 2006 by Jane

Chemistry
The standard free energy of activation of one reaction is 94.3 kj/mol^-1 (22.54 kcal/mol^-1). The standard free energy of activation for another reaction is 76.4 kJ/mol^-1 (18.26 kcal/mol^-1). Assume temp of 298K and 1 M conc. By what factor is one faster than the other? Im ...
November 10, 2010 by Tokey

English
1. Talk about the things which are missing in the following pictures. 2. What do you think you lack in? 3. Talk about the things you lack in. 4. Expressing whether a person is sure or not ( Is this phrase good?) 5. Peter should take care of his brother. 6. Peter should babysit...
June 17, 2009 by John

Check my precalc
1. find without a calc log base 5 of cubed root of 25. I got x=(2/3) 2. ln base e of 3 I got 3 3. find the domain of y= log base 3 of (x/x-1) I got (negative infinity, 0)union (1, infinity) 4. y= (1/ln x) find the domain i got ( negative infinity, 1) but im pretty sure thats ...
November 15, 2012 by Rebekah

Fluid Mechanics
Not sure how to approach this problem. Seems simple. Here it is... An airplane is moving through still air at 60m/s. At some point on the wing, the air pressure is -1200N/m^2 gauge. If the density of air is 0.8kg/m^3, find the velocity of the flow at this point. Carefully list...
January 20, 2007 by Jim

British Literature
Question: How did the Industrial Revolution affect the poetry of William Blake and William Wordsworth? - Okay, I'm not quite sure if I understand this correctly. Wasn't Wordsworth a supporter of the IR? And wasn't Blake thought to see the IR as a prophetic sign of the ...
January 18, 2009 by TS21

Math209
I am in a college level math class and we have a question that I am suppose to answer however I looked for this in our text and online and I am not finding a direct answer to it. Here is my question, What is the meaning of the word "parameters"? Please identify a real world ...
March 25, 2009 by Trish

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