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October 20, 2014

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

Number of results: 56,412

accounting
Marina Sailboats reports income before income taxes of $80,000 during 20x7. If beginning inventory was overstated by $7,000 and ending inventory was understated by $8,000, calculate corrected income before income taxes for the year. (Show your work.)
June 27, 2009 by James

Math - potential zero
List all possible (or potential) rational zeros for the polynomial below. Find all real zeros of the polynomial below and factor completely over the real numbers. Please show all of your work. f(x) = x^4 - 7x^3 -3x^2 + 19x + 14 Help
June 1, 2011 by CheezyReezy

math
Mr. Brown sold a jacket for $240, this making a profit of 20% on his cost. Later, he sold another jacket for $240 this time suffering a loss of 20% on his cost. The result of the two sales was A.He gained $40.00 B.He gained $10.00 C.He lost $20.00 D.He lost $10.00 E.He gained...
July 26, 2014 by Johnny

Algebra
Right now we are learning about absolute value inequalities. I have to solve and graph this inequality: Pretend my paranpheses are absolute value signs (x-4) + 5 is greater than or equal to 10. I assume I would take 5 away from each side first. But what would be the correct ...
January 31, 2009 by Julianna

English
Hello. I will really appreciate some help from a native speaker of English. Which word is correct in the following sentence: Both countries claim the four islands WHICH or THAT are known as... Maybe, both? And one more question. Is it possible to say: The islands are a (the ?)...
December 1, 2010 by Ilma

Business Communication
Which of the following would be classified as an informative or positive message? a) A request for information b) An announcement of a policy that reduces benefits c) A memo for the file recording actions and rationales d) A letter to an employer announcing you have accepted ...
February 24, 2011 by Hanna

Physics
A capacitor has two overlapping plates of width 4.9 m and length 3.5 m separated by 1.3 cm. A dielectric of dielectric constant ę = 58.0 fills the space between the plates. If this capacitor is connected to a 35 V battery, how much energy is stored in the capacitor when it is ...
May 1, 2011 by Sarah

Psychology
Sally is driving her car and talking on her cell phone. Statistically this behavior has been shown to be quite dangerous and contributes to many automobile accidents. In performing these two tasks simultaneously, Sally uses: a. conscious cognitive processes b. mindless ...
February 23, 2012 by Oronde

Algebra II
I have some questions on my assignment, if you dont mind could you look over my answers. thanxs! Find all the numbers that must be excluded from the domain of the rational expression. x+8/x^2-16, my answer: x cant be -4 or 4 x-3/x^2+11x+24, my answer: x cant be -3 or -8 ...
August 13, 2007 by Jesse

Business
You work for a large company that manufactures non-toxic fertilizers and other garden supplies. You have sales offices in Los Angeles, Denver, and Boston. Your manufacturing is done in Portland. On the computer in your department, you will be storing weekly sales reports from ...
January 24, 2007 by Diana/for bob p

math
which 3 are correct a) if x= -10^4 then log10 x = -4 b)if x= 2^8 then log 2x = 8 c) log2 2= 4 d) if x= 3 then log10 3=x e) log 10 256-2log 10 16=0 f)log 10 (a-b)= log 10 a/log 10 b g) the gradient of the graph of y= 2e^x at x= 2 is 2e^2 h) the gradient of the graph of y= e^x ...
May 12, 2007 by grant

college algebra
Describe two laws of exponents and provide an example illustrating each law. Explain how to simplify your expression. How do the laws work with rational exponents? Provide the class with a third expression to simplify that includes rational (fractional) exponents
November 26, 2008 by kacie

Chemistry
Please show me how to work! thanks When Snno2(s) is formed form the comustion of gray tin, the reaction enthalpy is -578.6 kJ, and when white tin is burned to form SnO2(s), the reaction enthalpy is -580.7 kJ. Calculate the reaction enthalpu for Sn(gray)-->Sn(white)
October 20, 2012 by Sam

biology
Why all enzyme work well in their own optimum temperature and optimum pH ? i need more explanation about why different enzyme have different optimum temperature and different optimum pH to react. i hope to get a long explanation for my essay that contain 5 marks.
July 31, 2013 by kate

Math
Denise took a total of 80 calls on her shift at work today. Of those 80 calls, 55% were resolved, 15% escalated to a supervisor, and 10% required that a technician be sent out to the customer's house. What is the total number of calls that Denise resolved on her shift today? A...
August 20, 2013 by Derek

math
Denise took a total of 80 calls on her shift at work today. Of those 80 calls, 55% were resolved, 15% escalated to a supervisor, and 10% required that a technician be sent out to the customer's house. What is the total number of calls that Denise resolved on her shift today?
May 28, 2014 by lannie

Math
Randi takes the stairs at work whenever possible instead of the elevator. She must climb up 51 steps from her office to get to the accounting department. The human resources department is 34 steps below her office. How many steps are there between human resources and accounting?
September 3, 2014 by Sadie

American Government
Define and explain both political culture and public opinion. Give examples of each to clearly differentiate the two concepts. Then, explain what effect each has on or role each plays in American politics? How are they different and how are they similar? Be sure to discuss ...
July 18, 2013 by Anonymous

math
Chuong and Hassan both drive 40km from home to work each day. One day, Chuong said to Hassan " If you drive at your usual speed, I will average 40kmph faster than you and arrive home in 20 minutes less time". Find Hassan's speed.
September 20, 2009 by mathpleashelp

MATH
system of linear equation The sum of 3 numbers is 14 the largest is 4 times the smallest the sum of the smallest and twice the largest is 18 what are the 3 numbers? show work? A. how many unknowns you have? -how many equations need to be solve for that many unknown? B. what ...
November 1, 2011 by YANETH

English
I tried to summarize briefly Scotland's history. Can you please have a look at it? Which form is correct: in 9th century/in the ninth century? 6th century (AD): 500-599 (is it correct?) 9th century (AD): 800-899 10th century: 900-999 1) The first inhabitants of Scotland were ...
September 5, 2011 by Henry2

English
Rennet is an extract made from the lining of a calf's fourth stomch. In the sentence above, what is the verb and is it linking or action? I thought it would be an action verb-is made.But I am not sure. The verb in the main clause is IS. Rennnet IS an extract. It's a linking ...
December 11, 2006 by Katie

Chemistry 1 [more detailed]
thanks for the responses but i still dont understand it. I think its more detailed what i have to find now. I have to find the names and correct formula for the reactants and products for the following. "When strongly heated, magnesium and sulfide formed a yellow crystalline ...
April 29, 2008 by Christy

psychology
A pregnant woman is most likely to decide to use the Lamaze method because she A is interested in eliminating the pain of delivery B would prefer to speed up the delivery process C would rather take a longer time in delivery to reduce trauma to her baby D likes the idea of ...
January 7, 2009 by tzeni

Percent Composition
I figured out this percent composition problem and I got REALLY close answers, so I wanted to check in with someone to confirm if this is right. Which is the better ore for mining Aluminum: Either Al2(CO3)3 or AlPO4? For me the first one was the better percentage (22.85%) but ...
April 21, 2009 by Jenn

Percent Composition
I figured out this percent composition problem and I got REALLY close answers, so I wanted to check in with someone to confirm if this is right. Which is the better ore for mining Aluminum: Either Al2(CO3)3 or AlPO4? For me the first one was the better percentage (22.85%) but ...
April 21, 2009 by Jenn

English
1. I have to pay a library fine; I must have (forgot) to return a book on time. 2. Unfortunately, she had already (throw) the map away. 3. My uncle Jack has(drive) a taxicab for over thirty year. 4. Noah had already (write) a letter to his grandfather. Write correct form of ...
May 3, 2011 by Hayden

Civics
Ms.Sue would you mind checking my answer? Question~How does the constitution protect someone's freedom of speech while also limiting their freedom of speech? Answer~ we are allowed to state our opinion as long as it-does not taken someone's rights away, doesn't permit you to ...
November 23, 2013 by Kali

calculus
Approximate the area in the first quadrant between the x-axis, the y-axis, the line x = 3, and the function f(x) = x^2+1 For this approximation, you must use 6 rectangles of equal width, and this must be a lower sum. In your answer, you must include letters a-d below: a. The ...
November 30, 2011 by Courtney

calculus help
Farmer Brown wants to fence in a rectangular plot in a large field, using a straight rock wall that is already there as the north boundary. The fencing for the east and west sides of the plot will cost $3 a yard, but she needs to use special fencing, which costs $5 a yard, on ...
April 25, 2014 by Chris

Physics
An block of mass , starting from rest, slides down an inclined plane of length and angle with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is . At the bottom of the incline, the block slides along a horizontal and ...
October 10, 2013 by sied

SCIENCE-URGENT
Right now I'm studying photosynthesis in Biology. We have to design an experiment that would prove how light reactions occur prior to carbon fixing reactions. I know how light and carbon fixing reactions work, but how can I prove this experimentally? Are there any experiments ...
January 8, 2008 by Eddie

Algebra
Solve each system graphically. 4y = x + 8 3x - 2y = 6 Basically, what I have to do is find at least one point that works. I tried graphing it on graph paper, and it looked like about (1, 3.5). But when I tried placing in the equations, it did even work in the first one. I do ...
February 18, 2009 by Suzanne

psychology
Cannon-Bard view emotion as more than a response to physiological arousal. They suggest that... 1) the hippocampus and the spinal nerve produce emotion 2) both the cortex and the autonomic nervous system respond to the stimulus 3) emotion is the work of higher brain levels ...
December 20, 2009 by nicky

Physical Science
In a pulley sytem with 100% effieciency with ten support cables. The input side reels 100 meters of cable. How far dis the output move? What is the value of the output force? In identical conditions at 70% efficiency, the cable does not stretch. How much input force is needed ...
February 25, 2011 by Miguel

prob and stats
11. Assume that the population of heights of male college students is approximately normally distributed with mean m of 72.15 inches and standard deviation s of 6.39 inches. A random sample of 96 heights is obtained. Show all work. (A) Find (B) Find the mean and standard error...
October 24, 2012 by Anonymous

algebra
Your monthly commission as an appliance sales person is represented by the equation, S = 50x+450, where 50 is the rate paid for each appliance sold, x is the number of appliances sold, 450 is the base pay per month, and S is the salary. Complete the following table to ...
February 12, 2014 by Angie

Physics
A meteor has a speed of 90.0 m/s when 900 km above the Earth. It is falling vertically (ignore air resistance) and strikes a bed of sand in which it is brought to rest in 3.19 m. (a) What is its speed before striking the sand? (b) How much work does the sand do to stop the ...
February 26, 2014 by Anonymous

Algebra 1
A nurse needs to set up the proper dosing for medicine. The boy weighs 44 lbs and needs to get 5mg/ kg. How many mg of medicine should he get per day. Hint- You need two ratios: 2.2 lbs per Kg and 5mg per Kg Think about what goes on top and the bottom to cancel out. Please ...
March 6, 2014 by Miss Miranda

physics plz help
I need help in calculating work. following quantites are given. * G: 6.67E-11 *Mass of earth:5.98E24 *mass of satelightt:80kg *x(initial) center of the earth-7E6 m *x(final) center of the earth 12E6 m How do I make integral equation I need use 20 interval or calculate in excel...
April 7, 2014 by jenny

Accounting
Hi i need help with the following transactions. Right now we are learning about the accrual basis of accounting. 1.Rent Payments included $750 per month rental fee and a $900 deposit that is refundable at the end of the 2 yr lease. 2.The company manager used her personal ...
September 24, 2006 by F

Accounting
Hi i need help with the following transactions. Right now we are learning about the accrual basis of accounting. 1.Rent Payments included $750 per month rental fee and a $900 deposit that is refundable at the end of the 2 yr lease. 2.The company manager used her personal ...
September 25, 2006 by F

stastic
Work all parts of each of the following problems, showing your work. If you need to use the templates, do so, but be sure to include the template output and interpret it. There is a handout on how to paste Excel output into Word in the classroom, under Handouts, I think. 1. (...
October 12, 2010 by karanzala

Biology
14. Which of the following is the blood vessel with the largest diameter? a. capillary b. artery c. vein d. venule Not sure...? 16. As a defense against pathogens, mucous membranes a. cover all of the body's surfaces to act as an impenetrable barrier b. line internal body ...
March 19, 2010 by mysterychicken

algebra 1 help
fin the complement and the supplemnt of the angel measure 1) 130 complement-40 suplement-50 or vice versa if anyone can help me with some algebra work it would be greatly appreciated i am im algebra 1 and still on the second quarter and have until november to finsh thank you ...
August 20, 2005 by cristina

Chemistry DrBob
You told me the steps on a previous post but i must have forgot how to work out absorbance or ICE cus i keep getting the wrong answer ... The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.520...
April 10, 2008 by Amy

History Question
1) Why did the Middle colonies have the most diverse population in colonial America? (1point) Leaders of the Middle Colonies advertised in Europe to attract more settlers. People moved to the Middle Colonies from New England to escape religious persecution.*** Immigrants from ...
October 4, 2013 by Gabby

physics
A driver of a car traveling at 16.7 m/s applies the brakes, causing a uniform deceleration of 2.5 m/s2. The first question is - How long does it take the car to accelerate to a final speed of 13.9 m/s? For this i got 1.12 and that's correct. The second question is - How far ...
September 6, 2011 by John

Chem
How much water must be added to 500.mL of .200M HCL to produce a .150M solution? (.500mL x .200M)/.150M = .667mL Correct? A chemistry student needs 125mL f .150M NaOH solution for her experiment, but the only solution avail. is 3.00M. Describe how the student could prepare the...
May 1, 2009 by Chopsticks

Precalculus
"An aquarium with length x, width x-10, and height x-5 holds about 750 cubic feet of water. Find all real solutions of the equation (I wrote it) 750 = x(x-10)(x-5)." I got the volume equation correct, right? I've tried dividing the factors of -750 by the factors of 1 (with ...
September 17, 2009 by Emily

physics
A gas is taken though a single process in which its volume decreases by .25 m^3 as the temp of the gas rises 2deg C. Which of the following people are more likely to have reached the correct conclusion? a. Bob ids this process as adiabatic b. Jill ids this process as ...
November 12, 2010 by Christina

Algebra II
Working on my online math homework, I encountered this problem: Solve: (3x^-1 y^-2)^-2 (x^2 y^5)^-1 [[Spaces denote the end of the exponent.]] Because of the law of exponents that deals with negative exponents, I did the reciprocal and distributed the exponent, getting (1/3x^2...
January 25, 2012 by Kenneth

Psychology
According to the all-or-none law: A. all axons in an area will fight at a given signal. B. an axon moves from its resting state with various degrees of stimulation. C. only sufficient electrical activity will cause the axon to fire. D. there is a gradual build up of electrical...
April 12, 2013 by Angela

statistics
Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y. x 7 7 5 5 7 y 95 90 75 85 95 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). Incorrect: Your answer is incorrect. . (SS(x)) Incorrect: Your ...
May 26, 2013 by Tom

Statistics
Does studying for an exam pay off? The number of hours studied, x, is compared with the exam grade received, y. x 7 7 5 5 7 y 95 90 75 85 95 (a) Complete the preliminary calculations: SS(x), SS(y), and SS(xy). Incorrect: Your answer is incorrect. . (SS(x)) Incorrect: Your ...
May 26, 2013 by Tom

Math help
The International Bottled Water Association says that Americans on the average drink 4.6 (8-oz.) servings of water a day. Assume that the number of 8-oz. servings of water is approximately normally distributed with a standard deviation of 1.4 servings. (Give your answers ...
June 13, 2013 by Sue 620

chemistry
Find the a)partial pressure of ethylene oxide and b)the total gas pressure, after 30 hours in a reaction vessel at 415C if the initial pressure of ethylene oxide is 782mmHg. k= 2.05x 10^-4 t(1/2)=56.3 Part A) I converted hours to seconds, and used the formula ln(Pa)t = 108000s...
April 17, 2014 by mae

maths
can you explain to me how to do this question i know i have to use differential equations but im not sure how to form an equation for inversely proportional question states grain is being poured at a steady rate to form a pile with height h, the rate at which the height is ...
February 1, 2010 by lucy

chemistry
Suppose that you wanted to be sure that a metal ion, any metal ion, would dissolve in water. What salt of the metal ion compound would you choose? 1. the hydroxide (OH−) salt of the metal ion 2. the carbonate (CO2− 3 ) salt of the metal ion 3. the nitrate (NO−...
September 19, 2012 by cheri

basic psy
classical conditioning examples of us - the clicking of the gun ur - running away cs - gun shoots cr - the running away from the clicking of the gun are theses correct examples
May 5, 2010 by anna

math
In my math book i got a question that said 1/7 times 1/7. I got answer of 2 if my answer is not right can you show me how to do the problem.If my answer is correct still show me how to do the problem
June 30, 2012 by Americal

social studies(updated answers)---Mrs.Sue
1.A 2.C 3.A 6.D 9.B 1. why do most people live in the western part of colombia? A. to enjoy the cooler climate of the mountains B. to be closer to the border with venezuela C. to live along the pacific coast D. to benefit from the country's lush rain forests 2. what are the ...
March 17, 2014 by Kayla

physics
A student uses a sonic motion detector to determine the position of a car at various times. The student takes five positions at five different times. The student's data is represented below: Time t [s] Position x [m] 0.5 39.9 1.4 75.4 2.9 139.3 3.7 186.5 4.1 193.2 (a) Plot the...
August 30, 2011 by josh

calculus
This is the question: "A new fruit juice (like a Popper) is to be marketed in a new container in the shape of a rectangular prism. The cardboard container is to have a square base and is to contain 300 mL of juice. What should be the dimensions of the container be if the ...
March 19, 2013 by Jamal

calculus
This is the question: "A new fruit juice (like a Popper) is to be marketed in a new container in the shape of a rectangular prism. The cardboard container is to have a square base and is to contain 300 mL of juice. What should be the dimensions of the container be if the ...
March 19, 2013 by Jamal

chemistry
calculate number of atoms in 4.67 mol of Ca(NO3)2 I got: 2.81 X 10^24 C atoms or should it be 28.11 x 10^23 C atoms? 5.62 X 10^24 N atoms or should it be 9.34 x 10^23 N atoms? 1.69 x 10^25 O atoms....but are you allowed to do ^25 or should it be 168.7 X 10^23 O atoms I'm ...
May 23, 2008 by Sarah

CALCULUS EXAM REVIEW
Hi, my exam is tomorrow and I'm here with my girlfriend who's also in the same class trying to figure out how to do the exam review but we're stuck.. please be kind and help us out, we'd really appreciate it. Thank you in advance. QUESTION: Write a vector equation and ...
June 21, 2012 by Roberto & Cecilia

Chemistry(Please check)
1) A catalyst alters the rate of a reaction by a. changing the products in the reaction. b. increasing the activation for the reaction. c. always providing a surface on which the molecules react. d. providing an alternate pathway for the reaction. e. increasing the ...
February 24, 2012 by Hannah

Business Management and Leadership
You work in the Human Resources department of your organization. You have been charged with recruiting a manager for a department within the Services division. The Vice-President of the Services division stresses to you that "This department hasn’t had a good manager in years...
September 4, 2008 by Anonymous

clinical studies
ok so to summarise the task i have to consider scenario where the patient comes to you, you gave her all the medications that normally would work 100% on all patients, yet here it has no effect. Its obvious the patient didnt stick to the treatment you recommended. And the ...
November 29, 2011 by Viola

Physical science
I have done this problem over and over again, but I still keep getting it wrong. What do I need to do? A 1.04x10^3 kg car accelerates uniformly from rest to 12.0 m/s in 2.16 seconds. What is the work done on the car in this time interval? Answer in units of Joules. What is the...
March 5, 2008 by Christy

Algebra
I am supposed to find the ticket sales of a concert using this formula: N(x)= -0.3x^2 + 6x + 15 X represtents the number of days since the concert was first announced. I need to find out when daily ticket sales will peak and how many tickets will be sold on that day. How do i ...
October 12, 2008 by Laura

chemistry
I need help doing the work, I think something might be wrong. How many glucose molecules does an E coli cell contain if it has an internal glucose concentration of 1.0 mM. The E coli is a cylinder that is 2 micrometers long and 1 micrometer in diameter. pi*r^2*h 3.14 * .00005^...
September 7, 2009 by Janae

Algebraic Polynomials
I don't know where to go about creating a polynomial equations for the following problem: A piece of wire 52 in. long is cut into two pieces, and then each piece is formed into a square. If the sum of the areas of the two squares is 97 in.^2, how long are the pieces of wire? ...
March 28, 2012 by Anonymous

chemistry
Using the concentration of CH3COOH (0.8326M) and the equilibrium concentration of H3O+ (OJ = 31.6x10^-6 and milk = 3.16x10^-8), complete the reaction table for vinegar. Then calculate the acidity constant. Please show all work in solving the problem. Reaction Table: CH3COOH(aq...
April 1, 2012 by Lisa

Physics
One can work out by either lifting weights or using a tension band, which is like a big rubber band. If we model the rubber band as a big spring with spring constant 400 N/M how far in meters must I stretch the the band so it applies a force equivalent to the gravitational ...
October 21, 2013 by Saiba

Pre-Calculus
Please check: 1.Find polar equation of x^2 + y^2 = 10y r^2 for x^2 + y^2 and sin(theta sin for y =r^2=10sin(theta) 2.Find polar equation: y=5 r=5/sin 3.Polar equation is r=2costheta + 3 sin theta Find rectangular equation x^2+y^2 =x^2 + y^2 =2x+3y
October 6, 2011 by Tonya

Calculus
I seriously do not understand anything about this problem Please help. The equation of an ellipse centered at the origin is (x^2/a^2) + (y^2/b^2)=1 The area of the upper half of the ellipse can be determined by finding the area between the ellipse and the x-axis (y=O). The ...
November 8, 2011 by Angel

physics
Radioactive nuclei are produced in an irradiated sample at the rate of 10 s-1. If the number in the sample builds up to a maximum of 1000, calculate the mean life and the half-life of the radioactive nuclei Using dN / dt = P - λ N dN / dt = 1000n /10/ 1 = 100 P - λ N...
August 18, 2014 by Ali

Calculus
Determine whether the integral is divergent or convergent. If it is convergent, evaluate it and enter that value as your answer. If it diverges to infinity, state your answer as "INF" (without the quotation marks). If it diverges to negative infinity, state your answer as "...
October 22, 2010 by Hannah

binary system
how does the binary system work?
March 1, 2008 by Anonymous

English
Can you tell me if it is correct to divide the two sentences this way? We really liked those places. Unfortunately, we didn't have any guide with us even if our brochure clearly said that an experienced guide would have accompanied us throughout our tour. What did the trvek ...
July 1, 2010 by Franco

Math
An external sinusoidal force is applied to an oscillating system which can be modelled by a model spring and a damper. The general solution of the equation of the motion is given by, x = 5 + 3.071cos(2πt – β) + 3.14exp(-7.96t) cos(αt + φ) where α, &#...
September 3, 2012 by Darren

SS8R - help!!!!
What were the various ways in which Progressives reformed society in the following areas: voters' rights: 16th and 17th amendment big business: sherman anit-trust act public works: !?!?!?! woman rights: less corrupt + morally superior education: john deney (teach and reflects ...
December 19, 2012 by Lauren

socialstudies
why did thomas jefferson write the declaration of independence? A.to end revolutionary war and emphasize quailty. B.to re-unite the country after the civil war and emphaize democracy for all. c.to guarantee the rights and freedom of U.S. citizens. D.to explain and justify the ...
November 18, 2013 by minate

social studies
Please check my answers 1) The American colonists based their right to revolt against Britain’s authority on the claim that a. the wealth of the new world belonged to them, since they had developed it through their labor. b. the colonial charters had expired, which made them ...
October 5, 2010 by kenji

Calculus (Answer Check)
Are my answers right? If they are wrong you dont have to tell me how to do it its okay =) A particle starts at time t=0 and moves along the x-axis so that its position at any time t(greater or equal to) 0 is given by x(t)=(t-1)^3 (2t-3) 1.find the velocity of the particle at ...
October 27, 2008 by Michelle

Calculus
Let V be the volume of a right circular cone having height h and radius r and assume that h and r vary with time. a. Express the time rate of change of the cylinder in terms of h, r and their rates of change. b. At a certain instant, the height is 10 in and decreasing at a ...
August 4, 2012 by Jay

Trig
Solve: 3tan^2x-1=0. I got +/- (the sq. root of 3)/3 which is correct according to my study guide. However, I don't know how to use the unit circle to find this. The copy of the unit circle which I have does not have tangent values listed, only sine and cosine. I've tried ...
January 7, 2010 by Tara

Chemistry
1.What is the molar heat of vaporization of water, given the following thermochemical equations? H2 + 1/2 O2 --> H2O + 241.8 kJ H2 + 1/2 O2 --> H2O + 285.5 kJ a) 44.0 kJ/mol b)-44.0 kJ/mol c)241.8 kJ/mol 2. Which substance has a standard enthalpy of formation delta Hf, ...
July 21, 2010 by John

calc
The point P(4, −2)lies on the curve y = 2/(3 − x). (a) If Q is the point(x, 2/(3 − x)),use your calculator to find the slope mPQ of the secant line PQ (correct to six decimal places) for the following values of x. 1) 3.9 mPQ= 2) 3.99 mPQ= 3)3.999 mPQ= 4) 4.1 ...
August 28, 2012 by someone please help me with this!!!!

Math
What is my number? clue 1. my number is a multiple of 2 and 7 clue 2. My number is less than 100 but larger than 50. clue 3. My number is the product of three primes, which are all different. Can some one tell me how to work this problem? Well, let's look at the primes 2,3,5,7...
September 12, 2006 by arochimero

APA FORMATTING
I think it's C. Am I right? When using APA, which of the following describes the method in which a work without page numbers should be presented in in-text citations? A. No mention of the page number is required in APA B. If no page number is present, it is not a credible ...
March 19, 2008 by David

Chemistry
Calculate the work involved if a reaction with an enthalpy change of -2418 kJ is carried out in a vessel with a mobile, frictionless piston. Other details: the reaction is H2(g) + 1/2Oxygen2(g) yields H2O(g) with enthalpy change of -241.8 kJ/mol. The product is 180.16gH2O=10....
November 22, 2008 by Mark

physics work and energy
A basket of neglible wieght hangs from a vertical spring scale of constant force 1500N/m. If you sundally put a 3.0 Kg adobe brick in the basket, find the maximum distance that the spring will stretch. If, instead, you released the brick from 1.0 m above the basket, by how ...
June 8, 2011 by Anonymous

grammer
So to make this sentence a pronoun case orginal sentence is Have you guessed the identity of the person to who I am speaking? correction is Have you guessed the identity of the person to whom I am speaking? Correct.
November 21, 2006 by patti

grammar - showed versus shown
Which is the following sentences is grammatically correct? "She had shown me so much about love." "She had showed me so much about love." Thanks, Leo (webmaster)
September 27, 2007 by Leo

Grammar Check
Punctuation—Hyphen She requested two and three-yard ribbons for her sewing project. My answer... She requested two-three yard ribbons for her swing project. is this correct?
December 5, 2007 by Trish

math
Frank said that all equilateral triangles are similar. Veronica said that all right triangles are similar. who is correct- frank, veronica, both, or neither? explain your answer.
April 9, 2008 by christinaa

finance (risk premium)
The risk premium is likely to be highest for A. U.S. government bonds B. corporate bonds C. gold mining expedition D. either B or C I like C the gold mining expedition I that correct??
July 25, 2008 by Jason

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