Wednesday
April 16, 2014

Search: determine the work done (including the algebraic sign).

Number of results: 60,800

Physics
A charge of 3.93 is placed at each corner of a square 0.470 on a side. Determine the magnitude of the force on each charge.
Friday, February 15, 2013 at 6:23pm by Elmer

pre-calculus
the foci of an ellipse are (0,2) (0,-2) and the eccentricity is 1/2. determine the equation of the ellipse. write your answer in standard form.
Tuesday, February 26, 2013 at 1:46am by yumi

chemistry
determine the concentration of the salt water Express the concentration in both molarity in grams per liter
Monday, April 15, 2013 at 8:02pm by Elihu

Math
The volume of the triangular prism is 30 cubic units. How do I determine the area of the base in square units?
Friday, April 19, 2013 at 9:43am by Tricy

Calculus
If 2x-2f(x)x^2-2x+2, determine limx-->2f(x)= (Use squeeze theorem)
Friday, May 31, 2013 at 6:27pm by Penny

math
Determine the 10th term of the sequence 3,10,28,72,176. state the general term
Monday, June 3, 2013 at 10:15pm by Daniel

statistics
If your sample is less than 5% of the population, then the population correction factor would not be required. I'll let you determine which one fits.
Tuesday, June 18, 2013 at 5:12pm by MathGuru

Chemistry
Determine the molecular formula of phosphorus. phosphorus gas has a density of 0.617 g/L at 70 and 200 Celsius ...
Tuesday, October 1, 2013 at 1:04am by Lisa

AP Chemistry
How do you determine the heat of solution for a substance? how can we report this answer in both kJ/g and kJ/mol? thank you!!!
Monday, November 11, 2013 at 2:23pm by Samantha

Geometry (math)
Determine whether line QV and line RM are parallel,perpendicular or neither ?
Tuesday, November 19, 2013 at 9:51am by Naila dar

Math
Determine, with justi cation, the value of the remainder when 2^314 is divided by 91. (Hint: 91 = 13 * 7.)
Thursday, December 5, 2013 at 6:10pm by Mann

chemistry
Determine the volume of 1.2 mol/L HCl that will be required to neutralize 150 mL of 0.080 mol/L Ba(OH)2
Saturday, March 15, 2014 at 3:50am by Esther

Math
In many of your questions, I can't tell how much is supposed to be under the sign, so I cannot answer them with confidence. The following are correct: 1,3,4,5,8 9: 10/2 = 5*2 /2 = 5 10. 2 sqrt (3/2) = (2 /sqrt 2)*sqrt 3 = sqrt 2 * sqrt 3 = sqrt 6 11 No. It is 0 ...
Monday, September 17, 2007 at 11:09pm by drwls

Chemistry
No. I think your algebra is!@#$%^&eyed. Assuming my work is ok to where I stopped, then multiply through by T2 to get rid of the T2 term in the denominator. -0.4595 = (10.4599 - 3694.97/T2) -0.4595T2 = 10.4599T2 - 3694.97 -10.919T2 = -3694.97 T2 = 338.4 or thereabouts which is...
Tuesday, July 19, 2011 at 2:38pm by DrBob222

Art History
I have to write a research paper on my field trip to the Metropolitan Museum of Art in NY, and discuss 8 items in length that we were meant to find in the museum. The only problem I am having is actually starting the paper, I don't want to just jump into the first painting I ...
Friday, October 26, 2007 at 6:02pm by Ashley

chemistry
hydrogen selenide can be prepaired by reacting aluminium selinide with water the other product being solid aluminium hydoxide AL(OH)3,write a balanced chemical equasion for the reaction of aluminium selenide with water including the phisical states of the reactents can u help ...
Friday, January 26, 2007 at 7:36am by jill

Chemistry
Iodine pentafluoride is an incendiary agent, a substance that ignites combustible materials. This compound is usually made by passing fluorine gas over solid iodine, but it also forms when iodine monofluoride changes into the element iodine and iodine pentafluoride. (a) Write ...
Saturday, June 9, 2012 at 2:08pm by Jamie

Criminal Justice
Discuss the merits of the idea that genetics are a source for criminal behavior. Make sure to provide examples that can be found through research studies and have evidence linking genetics and crime, including twin studies, adoption studies, and testosterone studies. What are ...
Sunday, September 8, 2013 at 8:37pm by Danita

Chemistry
figure the pH of a strong acid.. HX>>H + X so pH= log (.0642)=1.2 which is considerably lower than 3.86. Probably not a strong acid. Lets look further. work backwards. concentration H= antilog 3.86 H=.00014 WEll, the acid is .00014/.0642 * 100 percent ionized, or .21 ...
Thursday, March 10, 2011 at 6:02am by Anonymous

Managerial Economics--REALLY NEED HELP BY TOMORROW
Auto Maintenance Services (AMS) is a small auto service outlet in a suburban area of Syracuse. In reaction to a small increase in wages that has caused the marginal cost of this auto service establishment to increase from $25 to $30, the owner is considering raising the prices...
Thursday, November 23, 2006 at 10:19pm by Heather

physics
Let ->V1= -6.1 ihat + 8.0 jhat and ->V2 = -4.8 jhat + 4.2 ihat. Determine the direction of ->V1 counterclockwise from the +x direction Determine the direction of ->V2 counterclockwise from the +x direction
Tuesday, September 15, 2009 at 4:12am by physics

Physics warming a nail
Force x distance = Work, and most of that work ends up as heat in the nail. (Actually, the wood heats up also, but they want you to neglect that because the heat does not travel far into the wood right away, although eventually it does). Your equation for Q is not correct. ...
Sunday, September 20, 2009 at 9:57am by drwls

7th grade
how can u determine if it is a valid or not valid?
Tuesday, January 13, 2009 at 5:20pm by Nicole

math
f(2n)=n+f(2n-2) and f(2)=1. determine f(20)
Friday, February 18, 2011 at 8:16am by Diana

Scale Drawings
You have to know the scale to determine this.
Thursday, May 2, 2013 at 12:29am by Writeacher

physics
You see an optical illusion of an ever-upward spiral staircase. The climber trudges up and up and never gets anywhere, going in circles instead. Suppose the staircase is provided with a narrow ramp, allowing the tired stair-climber to push a wheelbarrow up the stairs. The ...
Sunday, November 4, 2012 at 6:51pm by Lance

AlgebraII
first, it's not an equation. Sure clue: no = sign! However, if you just want to simplify, a+2b+(14a-5b)-[6a+6b-(a+4)] a+2b+14a-5b-[6a+6b-a-4] a+2b+14a-5b-6a-6b+a+4 10a-9b+4
Wednesday, September 19, 2012 at 10:42pm by Steve

Chemistry
eqn 1 as is eqn 2 reversed. eqn 3 reversed. Add 1+2+3 to find total equn which will give you twice the numbers for coefficients. Divide everything by 2. For dH, keep 1 as is, change the sign on 2 and 3 and add them, then divide by 2 to find dGo rxn Then dGo = -RTlnK you know ...
Monday, November 5, 2012 at 11:50am by DrBob222

business finance
Hi,we can help you on this Assignment. We have professional writers ranging from PHD to Doctors. we only charge $5/page for all levels. we will provide your Original work with required writing style. our work will pass the Plagiarism and old paper checks. your will get A grade...
Wednesday, July 4, 2012 at 10:53am by originalessay

business management
Hi,we can help you on this Assignment. We have professional writers ranging from PHD to Doctors. we only charge $5/page for all levels. we will provide your Original work with required writing style. our work will pass the Plagiarism and old paper checks. your will get A grade...
Sunday, July 1, 2012 at 1:39pm by originalessay

Business law
Hi,we can help you on this Assignment. We have professional writers ranging from PHD to Doctors. we only charge $5/page for all levels. we will provide your Original work with required writing style. our work will pass the Plagiarism and old paper checks. your will get A grade...
Wednesday, June 27, 2012 at 4:07pm by originalessay

Algebra word prob
I don't have a graphing calc so I need help with this one. A batter hits a fly ball. A scout in the stands makes the following observations. There is a table with time (seconds) and height (feet) in correspondence to each other time is .75,1.5,2,3.25,4.75 and height is 77,133,...
Tuesday, September 10, 2013 at 2:11pm by Taylor95

Physics
I am reluctant to do this, it is so simple. torque=sum force*distances = -247*L + weight*L/2 the negative sign direction is in the direction the painter is pulling. Ladders moment of inertia = thin rod rotating about an end http://en.wikipedia.org/wiki/...
Tuesday, August 16, 2011 at 12:34pm by bobpursley

trig
You probably meant csc74 and cos74 (now equal sign) All values of the cosine and sine function are between -1 and +1, that is, they are proper fractions The reciprocal functions of both of these two are then either less than -1 or greater than +1, that is, they are improper ...
Monday, January 23, 2012 at 1:08am by Reiny

physics please HELP !
Which situations are examples of a particle with a non-zero acceleration? (Select all that are true for full credit.) a)A car driving around a circular track at constant speed. b)A child going back and forth on a swing c)A runner moving in a straight line with a constant speed...
Wednesday, April 18, 2012 at 4:53am by sally

calculus
SA = 4πr^2 d(SA)/dt = 8πr dr/dt when d(SA)/dt = -1 , and r = 5 -1 = 8π(5) dr/dt dr/dt = -1/(40π) dD/dt = -1/(20π) or appr -.016 cm/min (the negative sign indicates that the diameter is decreasing)
Friday, October 25, 2013 at 6:56pm by Reiny

Workplace Hazards and Safety
Describe and explain 5 rights and/or responsibilities of the worker with regards to safety in the workplace. This is the information I have: Worker's responsibilites: -Cooperate with the joint committee or worker health and safety representative, WorkSafeBC prevention officers...
Wednesday, April 6, 2011 at 9:37pm by Anonymous

Physics
A testing laboratory wants to determine if a new widget can withstand large acceleration and decelerations. To find out, they glue a 5.0kg widget to a test stand that will drive it vertically up and down. At 0 seconds the widget is at an acceleration of 19.6m/s^2. It reaches 0...
Wednesday, October 1, 2008 at 9:52pm by Sam

Physics
A testing laboratory wants to determine if a new widget can withstand large acceleration and decelerations. To find out, they glue a 5.0kg widget to a test stand that will drive it vertically up and down. At 0 seconds the widget is at an acceleration of 19.6m/s^2. It reaches 0...
Wednesday, October 1, 2008 at 10:44pm by Sam

college
1. Ling has received been approved for a Visa credit card with a $2000 credit limit, however he has not charged that much since opening the account. On April 24, he discovers a monthly statement from March that had accidentally slid down between his desk and the wall. Because ...
Sunday, August 21, 2011 at 7:39pm by Anonymous

Math
1. Ling has received been approved for a Visa credit card with a $2000 credit limit, however he has not charged that much since opening the account. On April 24, he discovers a monthly statement from March that had accidentally slid down between his desk and the wall. Because ...
Thursday, August 25, 2011 at 11:01pm by Anonymous

RE
Be careful with that response, though. That tends to set up what one of my Theology teacher called a "Vending Machine God." This is where we simply ask God for stuff in prayers and it's like we think we're putting money into a vending machine. Enough prayers (coins) = ...
Friday, June 19, 2009 at 7:21am by MattsRiceBowl

Math
well, it's clear that if there is 1 bus, the numbers work out: 40+16 = 36+20 If there are more buses, then since LCM(40,36) = 360, any multiple of 360 + 56 will also work, with an extra 9 buses if 40/bus, and an extra 10 buses if 36/bus, for each extra 360 kids.
Tuesday, April 8, 2014 at 4:45am by Steve

Interpersonal Communication
I am checking to see if my answers are correct. Feedback would be great. 1. My boss, Josie, is a great supervisor because she listens to each employees concerns and ideas. Josie is an example of a: *a) Social schema b) Stereotype c) Person Schema d) Prototype 2. Beth believes...
Sunday, September 8, 2013 at 9:16pm by Anonymous

math
A right circular cylinder of radius r and height h is inscribed in a right circular cone of radius R and height H, as shown on the right figure. Find the value of r (in terms of R and H) that maximizes the total surface area of the cylinder (including top and bottom). Comment ...
Saturday, August 11, 2012 at 11:10pm by deel

physics
A police car is traveling at a velocity of 15.0 m/s due north, when a car zooms by at a constant velocity of 44.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 5.00 m/s^2. Including the reaction time, how long ...
Tuesday, June 18, 2013 at 12:31pm by louis aaaa

calculus
assuming you just need to confirm your answers, I'll say none |x+.5|>1.5 monotone over any interval not including the x-values -2,-.5,1 up: x<-2 and x>1 down: -2<x<1 no inflection http://www.wolframalpha.com/input/?i=|x^2+%2Bx-2|
Thursday, February 27, 2014 at 2:43pm by Steve

e commerce or marketing, help pls
https://www.google.com/search?rlz=1C1GGGE_enUS379US379&gcx=w&sourceid=chrome&ie=UTF-8&q=clothing+manufacturer+resource+system If you need help learning how to search, including how to choose good search terms, go here and scroll down to the links under HOW TO SEARCH THE ...
Tuesday, December 6, 2011 at 8:17am by Writeacher

math
the wheel ( including the tire) of a sports car under development by one of the Big Three auto companies has an 11 in radius. what would be the car's speed in miles per hour if its wheel are turning 800 rpm? ------------------- 800 rev/ 1 min x 60 min/ 1 hr x 2 pi radians/ 1 ...
Sunday, August 26, 2012 at 8:41pm by greeny

physics
Determine the fraction of the energy radiated by the sun in the visible region of the spectrum (350 nm to 700 nm). (Assume the sun's surface temperature is 5800 K.) any help is always appreciated thanks Solve by integrating the 5800 K blackbody function from 350 to 700 nm, and...
Sunday, August 5, 2007 at 7:49pm by --pat--

science
The solar power is converted to electricity and stored for later use. For a more complete explanation, read this article carefully. http://www.buzzle.com/articles/do-solar-panels-work-at-night.html
Saturday, April 23, 2011 at 8:40pm by Ms. Sue

English
Thank you very much for teaching me both the British English and the American English alternative. By the way, do you say "What time do we land?" Is the use of the simple present correct in this sentence? I just want to make sure the following two sentences I need to include ...
Monday, October 3, 2011 at 1:47pm by Henry2

physics
1. A boy drags a wooden crate with a mass of 20 kg, a distance of 12 m, across a rough level floor at a constant speed of 1.50 m/s by pulling on the rope tied to the crate with a force of 50 N. The rope makes an angle of 25 with the horizontal. a.What is the magnitude of ...
Monday, October 24, 2011 at 8:43am by annie

Character Education
Character education is based on the love of doing this job without being obliged to do character ,so volunteering in a job that carries character at heart definitely helps a lot because people will perform the job not waiting for a give back. They will work endlessly. raising ...
Wednesday, November 7, 2007 at 6:14pm by Amina

CHEM (PLEASE HELP ASAP)
delta G = delta H -T*deltaS You must mean -394 kJ and not kL for DH. What's the problem is just plugging in and getting the answer? The USUAL problem with students is they forget DH is in kJ and DS is in J. So you want -394 kJ -(298.15)*.003 = ?? kJ. If the sign is negative, ...
Tuesday, June 8, 2010 at 3:37pm by DrBob222

Physics
Visitors at a science museum are invited to sit in a chair to the right of a full-length diverging lens (f1 = -3.3 m) and observe a friend sitting in a second chair, 1.94 m to the left of the lens. The visitor then presses a button and a converging lens (f2 = 4.36 m) rises ...
Monday, April 22, 2013 at 1:02pm by tommm

math
It certainly pays to check your work! I just took a HUGE science test. I checked it over twice before I turned it in, and got an A! My score was 94 out of 100! I figure that each time I checked it, I found half of the mistakes that were there at the time. What would my score ...
Monday, May 21, 2012 at 7:36pm by lexis green

math
A single card is selected from an ordinary deck of cards. The sample space is shown in the following figure. Find the following probabilities. (Enter the answers either as fractions or as decimals rounded to three places.) P(five of clubs) = 1 P(five) = 2 P(club) = 3 P(jack...
Friday, August 24, 2012 at 2:58pm by Anonymous

Alegebra
A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 450 seconds and a standard deviation of 50 seconds. Find the probability...
Saturday, August 8, 2009 at 7:34pm by Samantha

pre algebra
At the beginning of the year 2000, Bob put $100 in a savings account. The bank pays Bob 5% interest on his total savings at the end of each year including all interest added to the account. Assume the interest rate continues and Bob does not deposit any additional money in the...
Thursday, May 2, 2013 at 3:01am by julious

Numerical method - numerical integration
Evaluate the following integration: I(f) = integral sign from 0 to 20 of e^(-x) dx 1. Analytically 2. Rectangle method with h= 10,5,4,2,1. 3. Mid-point method with h= 10,5,4,2,1. 4. Trapezoidal method with h= 10,5,4,2,1. 5. Simpson's method with h= 10,5,4,2,1. 6. Using ...
Sunday, October 31, 2010 at 5:13pm by Anonymous

Numerical method - numerical integration
Evaluate the following integration: I(f) = integral sign from 0 to 20 of e^(-x) dx 1. Analytically 2. Rectangle method with h= 10,5,4,2,1. 3. Mid-point method with h= 10,5,4,2,1. 4. Trapezoidal method with h= 10,5,4,2,1. 5. Simpson's method with h= 10,5,4,2,1. 6. Using ...
Monday, November 1, 2010 at 9:34pm by Anonymous

long for people to answer
To add to what Writeacher has written. We have meals to prepare and eat. We have errands to run. We have appointments to keep. We have vacations just like you. And a myriad of OTHER distractions that keep us from the computer 24 hours a day 365 days a year. Tips: Don't wait ...
Monday, September 3, 2007 at 4:23pm by DrBob222

Physics/Math
A single force acts on a 5.0 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.0t - 4.0t 2 + 1.0t 3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to t = 2.0 s. find the ...
Thursday, March 1, 2007 at 2:32am by Technoboi11

AP CHEM
Please help me with these AP CHEM homework problems problems and show me the steps: Mass per Volume Results for Titrations: Determine the mass per volume results requested in the following problems. #23) A particular water supply is found to contain 0.000160 MAs, what is the ...
Thursday, July 31, 2008 at 10:39am by shylo

Math
Determine the color, driver and mpg of each car by the information: 5 different drivers -- Cox, Durham,Gosling, Heynek and Wollinsky. Car colors-- blue, green, red, white and yellow. different mpg-- 32, 31, 30, 29 and 28 1. Durham got morempg than the green car but not as many...
Thursday, August 28, 2008 at 11:44pm by Mary

Physics
Thank you for answering my previous questions! I have another one now in regards to the following question... An unknown potential difference exists between the inner and outer surfaces of the membrane of a cell. The inner surface is negative relative to the outer surface. If ...
Sunday, February 28, 2010 at 10:20am by Sandra

PreCalc
1) Determine the value of r (put this number in the first blank) and then determine the value of the 10th term of the geometric sequence. Do not use any decimals or mixed numbers in your answers. Reduce all fractions to lowest terms. a1 = 2 and a4 = −1/4 2)Find d and ...
Monday, July 16, 2012 at 10:49pm by Anonymous

math
The multiplier factor for successive terms is (192/3)^1/6 = 64^1/6 = +2 or -2 The third term would have the same sign as the first term, and be 1/4 as large. Thus a1 must be negative. The series is -3/4, -3/2, -3, -6, -12, 24, -48, -96, -192 or -3/4, 3/2, -3, 6, -12, 24, -48, ...
Thursday, December 23, 2010 at 4:15pm by drwls

Physics
The total horizontal momentum of cannon and projectile remains 0 Mp*Vpcos38.9 + Mc*Vrecoil = 0 Mc = cannon mass Vrecoil = recoil velocity Vp = projectile mass Solve for Vrecoil' V recoil = -(Mp/Mc)*174*cos38.9 m/s The minus sign means that it recoils backwards, compared to the...
Sunday, January 29, 2012 at 9:48pm by drwls

Java
By definition, an integer value does not contain characters (apart from the minus sign), otherwise the value is invalid. If you have a String and would like to check for foreign characters, you can try: the matches() method using a regular expression. For example, if you ...
Monday, November 2, 2009 at 11:25pm by MathMate

Chemistry
No, and I gave you the wrong information because I didn't see an arrow sign and I though the CO2 was a product. It isn't, it's a reactant. Therefore, Kp = 1/pCO2. You need to find the partial pressure of the CO2 which you can do from PV = nRT. You know V= 1L, you know R, T is ...
Wednesday, February 29, 2012 at 9:23am by DrBob222

Algebra (Re.: Reiny)
The fact that there was that nice symmetry to the question, makes it easier than it first appears. I had it as: (a/b + b/a)(b/a - a/b) look at (a/b + b/a) the common denominator for this would be ab, so a/b + b/a = (a^2 + b^2)/ab similarly for (b/a - a/b) the common ...
Friday, July 20, 2007 at 5:44pm by Sara

Maths
I don't really know how much you know about mathematics, but I'll give you some basic steps in sketching a function. 1) find the domain of the function. You can't draw the curves in places where the function can't go. (For polynomials of x, the function reaches from-infinity ...
Saturday, May 17, 2008 at 10:08am by Christiaan

math
DQ sells 6 times as many orders of french fries as sonic everyday. If both sold 60 more orders DQ would only sell 3 times as many fries. How many do each sell before and after the incease? math - DrBob222, Wednesday, December 23, 2009 at 4:34pm S = number FF Sonic sells. D = ...
Thursday, December 24, 2009 at 10:13am by petie

Chemistry -- plz help
Try this. I tried to put it inside the sentence an that won't work. If this doesn't work I'll redo it from scratch. http://www.chemistry.mcmaster.ca/esam/Chapter_7/problems.html
Wednesday, January 7, 2009 at 7:11pm by DrBob222

physics
a motorist runs out of gas and must push his 3000kg car across a flat road 200m to the gas station. ignoring friction how much work must be done in order to get the car to the gas pump? if the motorist accomplishes this in 10 minutes, how much power has he applied? what if the...
Saturday, January 8, 2011 at 12:06pm by matt

Physics
The system shown in the figure is held initially at rest. Calculate the angular acceleration of the system as soon as it is released. You can treat MA (1 kg) and MB (12 kg) as point masses located on either end of the rod of mass MC (27 kg) and length L (9 m). (Indicate the ...
Wednesday, June 20, 2012 at 1:22pm by James

Social Studies
I am in 7th grade age 12 and i was wonder how does the European Parliament determine how many each country gets on each branch? I would like and answer ASAP. Thanks!
Wednesday, November 28, 2007 at 10:44am by Logan

Science
How might you determine whether or not your toothpaste contains calcium carbonate, CaCO3, or perhaps baking soda, NaHCO3, without looking at the ingredients label?
Tuesday, March 11, 2008 at 1:55am by Nancy

physics
The automobile is originally at rest at s = 0. If its speed is increased by dv/dt = (0.05t2)ft/s2, where t is in seconds, determine magnitudes of its velocity and acceleration when t = 18 s.
Monday, March 17, 2008 at 8:25am by shan

math-equation of circle
Since this is multiple choice, the quickest way to determine the correct solution would be to plug in the given coordinates into each of the solutions.
Tuesday, May 13, 2008 at 8:18am by Leo

music
I am trying to determine what intervals are in the beginning of 2 melodys-one from The March of the Siamese Children and the other from From Russia With Love from James Bond-any insight is appreciated.
Tuesday, March 3, 2009 at 9:34pm by Kate44

Chemistry
I determined the number of millimoles of HCl initially to be 3.75. How do I determine how much moles of NaOH are added at 50% completion for example because the volume isn't given.
Tuesday, August 11, 2009 at 7:25am by ChemHurts

math
I am so confused... what is this question asking me to do? Can someone reword this for me or tell me what I am supposed to do to solve it? Determine whether the triple of numbers can be the sides of a right triangle. 9, 12, 16
Sunday, August 23, 2009 at 10:09pm by sam

12th grade Physics
Determine the x and y components if a dog walks to the park that is 24m, 30 degrees northwest. Please help i don't know how to go about solving this problem
Wednesday, November 4, 2009 at 9:57am by Allison

it
A project contains Analysis, Definition, Design, Implementation, Maintenance, and Support phases. How do we determine what tasks are assigned to each phase? Provide examples to illustrate your comments.
Monday, November 23, 2009 at 7:33pm by meme

algebra
Using the Gauss-Jordan method need to determine the coefficients a,b,c of the quadratic equation x=ax squared +bx+c where y is degree of like and x is the percentage of sugar y=5.4 and x=8
Saturday, December 12, 2009 at 10:10pm by mike

trig
Use substitution to determine whether the given x-value is a solution of the equation: sin x = -2sqrt3/3, x=4pi/3 A) Yes B) No C) More information is needed D) The problem is indeterminate
Thursday, December 17, 2009 at 9:35pm by Steve

trig
Use substitution to determine whether the given x-value is a solution of the equation: sinx = -3sqrt/2, x=4pi/3 A) Yes B) No C) More information is needed D) The problem is indeterminate
Thursday, December 17, 2009 at 9:39pm by Steve

Chemistry B
Determine the pressure inside a televison picture tube with a volume of 3.5L that contains 2.00 x 10-5g of nitrogen gas at 22.0C?
Monday, April 5, 2010 at 8:53pm by Christy

Chemistry
Determine the mass of gold that can be extracted if 25.0g of sodium cyanide is used. 4Au+8NaCN+O2--->4NaAu(CN)2+4NaOH
Thursday, April 8, 2010 at 1:51pm by Lauren:)

math&science
can someone help me with this question please..A 2kn weight is suspended from 2ropes ------------- \ | / pn\ | / qn determine the 28*| / sizes of forces \|40* P and q |/ 2 kn
Wednesday, May 19, 2010 at 7:59pm by jazmin

Physics
A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.
Monday, November 1, 2010 at 9:03pm by Jordan

math help!!!!
determine the sum of the following geometric series. round your answer to 4 decimal places if necessary. a. -1/32+1/16-...+256 b. 50 over sigma n=1 8(.5)^n-2
Monday, January 10, 2011 at 4:51pm by Anonymous

Chemistry
Assume that it is necessary to determine the [Fe3+] in a solution that may be in the .0001 to .0005 M range. Outline a spectrophotometric method that would accurately give the required data?
Thursday, March 10, 2011 at 7:11pm by Kirsten

Stats
Angela is conducting a poll on campus to determine the next student representative. How many students does she need to sample for a confidence level of 90% with a margin of error of + or - 5%?
Saturday, May 14, 2011 at 9:45pm by Ana

Statistics
Angela is conducting a poll on campus to determine the next student representative. How many students does she need to sample for a confidence level of 90% with a margin of error of + or - 5%?
Sunday, May 15, 2011 at 4:06pm by Ana

statistics
Are you looking to find a t-value from a t-table for the information you were given? If so, use sample size to determine degrees of freedom (which is n-1) for a one-tailed test. Hope this is what you were asking.
Wednesday, June 29, 2011 at 3:31pm by MathGuru

physics
Use the fact that the speed of light in a vacuum is about 3.00 108 m/s to determine how many kilometers a pulse from a laser beam travels in exactly 4.9 hour(s)
Tuesday, August 23, 2011 at 10:07pm by Anonymous

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