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March 27, 2015

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

Number of results: 39,278

algebra
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. -x – 8y = 43 4x + 32y = 172
February 22, 2011 by Joel

Algebra
using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x + 24y = 24 27x – 15y = -15
March 23, 2011 by Miguel

math
Compute the following limit: sqrt x+4 -2/x lim x-->0 the x+4 is the only thing under the square root. the answer is .25, but id like to know how to work this out
April 27, 2011 by Anonymous

physics
which of the following properties of a sound wave determines its pitch: wavelength, speed, amplitude, or frequency? Plese show work, Thank you, Silly
May 2, 2011 by silly

Math- Problem3
Solve the following inequality and write your answer using interval notation. Please show all of your work. (1 / (x+8) ) ≤ ((8-5x)/43)
June 9, 2011 by Greg - PV

Physics
How much work is done to move a 1400 kg car from rest to 25 m/s.If this takes place over a distance of 130 m, what is the average net force?
July 23, 2011 by Aditya

intermediate algebra
Solve using the elimination method. Show all work. If the system has no solution or an infinite number of solutions, state this. 3x+7y=77 -2x+7y=42
July 30, 2011 by ROCKY

Chemistry
Give the physical state of CO2 under the following conditions: pressure = 4000 mmHg, temperature = 18 degrees F. show work!
September 6, 2011 by Sarah

physical science
A 65 kilogram person stands on a diving board 15 meters above the water. figure the GPE. show formula and work
September 18, 2011 by Alexis

Stats
Rank the following data in increasing order and find the position and value of the 56th percentile. Please show all of your work. 0 1 6 8 9 9 8 6 3 1 0 9
October 15, 2011 by Jennifer

chemistry
Consider the reaction Mg +2HCl ------>MgCl2 + H2 What is the minimum amount of 1.85M HCl is necessary to produce 28.5L of H2 at STP Please help me work this problem
November 6, 2011 by swtnblk

algebra
perform the indicated operation and if possible,simplify please show all of your work. write your answer in lowest terms. 18/35 divided by 22/25
November 7, 2011 by Angela

algebra
Solve using the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this. 3x – 15y = -12 3x + 24y = -12
November 14, 2011 by Linda

College Pre-Algebra
Solve -14x-7(4-x)< 3(2x-15). Write your solution using set builder notation. Please show all of your work.
November 22, 2011 by Kameesha

Calc
Evaluate the function at the given values of the independent variable and simplify. f(x)= {x^2)-3 if x is less than or equal to -2 {6x+1 if x > -2 a. f(-3) b. f(0) c. f(-2) How do I solve this/what are the correct answers so I can check my work?
December 14, 2011 by Jillian

math/ calculus
full work out with explanation of this problem please we're working with derivatives and i dont understand it given h(x)= cotx/x find h'(pi/2)
December 20, 2011 by Angie

operations management
a small business contactor has recently experienced two successive years in which work oppotunities exceeded the firm's capacity.
December 27, 2011 by Anonymous

algebra
Solve the following inequality and write answer using interval notation. Please show all of your work. 2x-5/3x^4-x^3+275x-125>=0
January 18, 2012 by sarah

Math
Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 10x + 5y = 52.5 30x – 7y = 80.5
February 5, 2012 by Shirley

algebra
I am not asking directly for the answer to this problem, I just need help understanding how to work it. Which of the following rules could be used to describe the function on the table below? X | Y -1|-1 0 | 1 1 | 3 a) f(x) = 2x b) f(x) = 2x - 1 c) f(x) = 2x + 1
February 17, 2012 by Amy

voc 3
She worked really hard on the project. The suffix -ed in the italicized word in the sentence above illustrates that the work happened in the past tense.
March 7, 2012 by desha

geometry
The perimeterof a square is 32 inches. Find the lenght of its diagonal. the answers should be in simplest form. make a sketch and show work.
March 21, 2012 by rob

Pre-Calc
For the triangle shown, find the length AD. (Assume u = 18, v = 18, x = 10°, and y = 10°. Round your answer to two decimal places.) Show work please!!!
April 2, 2012 by Mike

physics
A 2 kg metal plate slides down a 14-meter high slope. At the bottom its speed is 11.1 m/s. To the nearest Joule, what was the magnitude of the work done by friction?
April 15, 2012 by 18

physics
A ball its thrown straight up into the air at 50 m/s find the balls velocity after 8 seconds show all work please
May 3, 2012 by lisa

statistics
If the average number of textbooks in professors offices is 16 with a standard deviation of 5; and the average age of professors is 43 with a standard deviation of 8. Calculate the covariance of the number of textbooks in professors offices (show your work and formulas used) ...
May 10, 2012 by Leannes

physics
question # 1 :Estimate the work you do to mow a lawn 13m by 23m with a 60cm wide mower. Assume you push with a force of about 15 N .
May 21, 2012 by kay

Math
Which of the following CANNOT be the average ( arithmetic mean) of four positive even integers? a) 1 b) 2 c) 6 d) 9 e) 17 ( please explain or show work. It will help me understand it better! Thanks)
August 15, 2012 by Sarah

satistics
Rank the following data in increasing order and find the position and value of the 65th percentile. Please show all of your work. 2 1 6 3 4 7 0 0 0 7 5 8
August 20, 2012 by latoya

math
Hi guys I just need to simplify this equation and I keep eliminating all x's so I don't know if that is possible. Let me know if i'm right or were I went wrong...my work is below (2/x+2)-(x/x-2)+1 2(x-2)-(x)(x+2)+1(x+2)(x-2) 2x-4-x^2-2x+x^2-2x+2x+4 -4
September 10, 2012 by Patty

Physics
How much work did the movers do horizontally pushing a 160-kg crate 10.3m across a rough floor without acceleration, if the coefficient of friction was 0.50?
October 23, 2012 by Lisa

Science
While traveling along a highway a driver slows from 24 m/s to 15 m/s in 12 seconds. What is the automobile's acceleration? How would I show the work and find this answer?
October 29, 2012 by Robert

math
please explain how to use hundreds chart to answer this queston;WHAT % OF THE NUMBERS ARE MULTIPLES OF BOTH 2 AND 3? i have no idea how to work it out, thanks
November 14, 2012 by wan

science
Jai-Anna, who has a mass of 45 kilograms, climbed 3 meters up a ladder to rescue her cat from a tree. How much work against gravity did she do?
November 15, 2012 by cristopher

calculus
solve the following inequality. write your solution in interval notation. x^3+9x^2-108 less than or equal to 0 please show all work
December 24, 2012 by Josh

science
: how much work is done by 0.020 meters squared of gas if its pressure increases by 2.0 multiplied by 10 to the 5th power Pa and the volume remains constant ?
February 27, 2013 by Chad

algebra
Abby spent 5 1/2 minutes solving 5 math problems on her homework. How much time did she spend on each problem, on average? show your work.
March 6, 2013 by syram

Physics
A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,how much work does he do?
March 19, 2013 by Anonymous

Physics
A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,how much work does he do?
March 19, 2013 by Anonymous

Science
A construction worker exerts 209N to move a load of bricks a distance of 10m across the parking lot,how much work does he do?
March 19, 2013 by Anonymous

science
a 60.0kg boy runs up the stairs of a football stadium to a height of 12m above the ground 15s.what are the work and power student has done
April 10, 2013 by melinda

Art Appreciation
Compare Raphael's School of Athens with Veronese's Christ in the House of Levi. How did each work reflect the environments of Rome or Venice?
April 22, 2013 by kendra

Hospitality
A key difference between Social and Corporate event planner work is the days of the week that are usually worked. True or False
May 7, 2013 by Jake

chemistry
how many liters of oxygen are necessary for the combustion of 340 g of ethanol (c2h5OH) assuming the raction occurs at STP? no idea how to work this out
May 18, 2013 by parker

anthropology
Throughout the 19th century, stereotyping of work by sex had restricted women's employment. (Woloch, 2002). Is this a quote or paraphrasing?
June 25, 2013 by vanessa

algebra
Solve the system using elimination X+3y=5 4x+4y=4 I tried to work this problem and this is what I came up with. x+3y=5 x+4y=20 7y=15 y=7/15 and x= (5+y)/4 (5+7/15)/2 2/15 x=2/15 x=2/15, y=7/15 I would like for someone to check to see if it is correct.
July 15, 2013 by angela

Chemistry
Calculates the work done (in joules) when 42.8 g of tin dissolves in excess acid at 1.10 atm and 23 degrees Celcius. Assume ideal gas behaviour.
September 19, 2013 by Vanessa

Chemistry
Calculates the work done (in joules) when 42.8 g of tin dissolves in excess acid at 1.10 atm and 23 degrees Celcius. Assume ideal gas behaviour.
September 19, 2013 by Vanessa

polynomials
can someone please help me with this problem I have to get the sum diff and product I keep trying to work it out but i really think im blowing it. x^3- ¡¼2x¡½^2 + 3x-1 ¡Ă x^2- x+4
September 21, 2013 by Rick

math/chem
If aluminum foil has a density of 2.70 g/ml, then how thick would be a 2.22 g sample of foilif it measures 5.0 cm on each side. PLEASE SHOW WORK THX!
September 27, 2013 by john

Phsical Science
Which one is the best explanation of energy? A. making transformations B. the ability to do work C. conservation of power D. measuring joules I think it is B.
February 17, 2014 by dark1

Algebra
Use factoring and the zero-product property to solve the following problems: z(z - 1)(z + 3) = 0 x^2 - x - 10 = 2 4a^ - 11a + 6 = 0 9r^r - 30r + 21 = -4 Please show work. Thank you so much!
February 20, 2014 by Kathy

English Grade 11
Explain how the meaning of each of the following words is related to the root work -litera- mean "letter." 1. literate (adj.) 2. literature
February 26, 2014 by Alex

phisecs
A car must do work at a rate of 19 kW to maintain a constant speed of 29 m/s on flat ground. How large are the forces opposing its motion ? (In units of N)
March 31, 2014 by eee

English
Before leaving for the day, this work should be completed. A. Properly constructed sentence B. Dangler C. Misplaced part D. Comma splice A
June 24, 2014 by Angela

English
Before leaving for the day, this work should be completed. A. Properly constructed sentence B. Dangler C. Misplaced part D. Comma splice C
June 24, 2014 by Angela

ESSAY ON MY FUNCTIONALISM AND STRUCTURALISM
DO I JUST WRITE ABOUT WHO I AM AND WHAT I DO IN MY LIFE LIKE I AM A MOTHER A FRIEND A RECOVERING ADDICT? I WORK AT A BEHAVORIAL CENTER AND WHAT I DO THERE?
September 9, 2014 by MISTY

Algebra help
Find an equation of the line L, where L is perpendicular to y=3x and passes through the point (1,3) Please help I'm not sure what formula to use or how to work out this problem
September 17, 2014 by B

Physical Science
You are driving. You have enough gas in your tank to go 50 miles. The next town is 72 kilometers away. Can you make it? Show work.
September 17, 2014 by Belle

algebra 1
Find the x and y intercept of this equation: 10x-70y=210 I keep getting the wrong answer. Can you show me how to set it up and work it out?
October 2, 2014 by Brainiac

Algebra 2
More About Complex Numbers: Solve x and y 4x+5y+13i=7+(6x+5y)i Please show work because I had a hard time finding the answer
November 18, 2014 by Alicia

english
approximately what is the value of a Japan Yen compared to a dollar? Use estimation, and I need to show math work. I have no idea
November 20, 2014 by Mia

physics
a jogger does 2.5 *10^5 of work during an exercise routine. her internal energy decreases by 6.8*x10^5. how much heat did she absorb or give off?
December 15, 2014 by innocent

Chemistry
Find the molar concentration of 57.9 g of potassiuum chlorate dissolved in 975 mL of water my work c=nv (57.9/122.55)(975ml) and i got 460 is this correct
December 16, 2014 by Greg

Math
Solve and check. ( 3 marks) 5/(x-1) + 2/(x+1)=-6 Here's my work on it: 5/(x-1)+2/(x+1)=? 5/(-3/2-1)+2/(-3/2+1)=-6 Can you show how I would have found x in this situation and also if I went wrong anywhere.
January 9, 2015 by Alex

Anthrpology
Describe how this supposed work of art is also used in healing rituals and a visual reminder of their religious and mythologies within the culture
February 6, 2015 by meme

physics
a man raises a mass,m to a height ,h and then shifts it horizontally over a distance ,x. find the total work done against the force of gravity?
February 12, 2015 by jaggu

math
whats 9 plus 10 many people are saying 21? i dont get it is there another way? please answer me im really confused of the question i have no work to be shown
February 19, 2015 by Eevee

Physics
Please help me with this question How much work is done by a boy of mass 70kg who ran up a flight of 31steps each15m high. Take g=10m/s^2
March 4, 2015 by Cassandra

Calculus
∫ x^3 √(16-x^2) dx evaluated between [0, 4] I know this is solved using trigonometric substitution, but I'm not sure how to work it. Please show steps so I will understand.
March 14, 2015 by Nick

calculus trig substitution
∫ x^3 √(x^2+9) dx If you work it can you write the steps? I really don't like the way my teacher teaches it. Someone else doing it might help.
March 14, 2015 by Allie

Statistics- quick! Is this right?
I need to verify one of my answers quickly...the problem is: The mean annual salary for classroom teachers is $43,658. Assume a standard deviation of $8000. 1) Determine the sampling distribution of the sample mean for a sample of size 256. Interpret your answer in terms of ...
November 1, 2007 by Laura

Career and education
Describe the educational background/training necessary for that career. For example: 2-year college degree, Bachelor’s degree, graduate degree. What post-secondary routes could you take to get to that career? For example: attend a 2-year community college and transfer to a 4-...
October 30, 2014 by Monkey55

Math: Equivalence Classes
Let R be the relation on ℤ+×ℤ+ defined by (a,b)R(c,d) if and only if a−2d=c−2b. 1. Find an equivalence class that has exactly 271 elements. 2. Is it true that for every positive integer n, there is an equivalence class that contains exactly n elements? ...
August 14, 2014 by procrastinationEquation

Physics
An ice chest at a beach party contains 12 cans of soda at 3.05 °C. Each can of soda has a mass of 0.35 kg and a specific heat capacity of 3800 J/(kg C°). Someone adds a 7.15-kg watermelon at 25.0 °C to the chest. The specific heat capacity of watermelon is nearly the same as ...
November 17, 2006 by Sara

science-chem- theory questions
please, help me.. i think i know the answers, but i just want to make sure! i'd love your feed back :) 1) an air bubble is trapped in the tip of a buret before a titration. during the titration, the bubble is passed from the buret tip. will the reported volume of titrant used ...
March 22, 2011 by sarah

Math.
On any given day, there is a 30% chance that Jenny will wear jeans. If she wears jeans, there is a 60% chance that she will wear a t-shirt. A) determine the probability that Jenny wears jeans and a t-shirt on any given day. B)determine the probability that Jenny wears jeans ...
July 11, 2013 by Tasha

Chem
A mixture of chromium and zinc weighing .362 g was reacted with an excess of hydrochloric acid. After all the metals in the mixture reacted 225 mL of dry hydrogen gas was collected at 27 C and 750 torr. Determine the mass percent Zn in the metal sample. [Zinc reacts with ...
February 25, 2007 by Jim

Physics
Figure 18-46 shows a hydraulic lift operated by pumping fluid into the hydraulic system. The large cylinder is 40 cm in diameter, while the small tube leaving the pump is 1.7 cm in diameter. A total load of 2500 kg is raised 2.2 m at a constant rate. Neglect pressure ...
December 5, 2012 by Drake

maths 2
The original question I had was write arcsin4 in the form a+ib. I manage and understand how to get so far BUT How do I get from cosacoshb-isinasinhb=4 to 2m(pi)+/- iarccosh4 arcsin4 = a + b i ---> 4 = sin(a + bi) sin(a + bi) = sin(a)cos(bi) + cos(a) sin(bi) cos(bi) = cosh(...
January 14, 2007 by Jake

precal
Determine the quadrant in which theta lies: sec theta>0 and cot theta<0
March 2, 2009 by Anonymous

algebra
Determine which of the following lines, if any, are parallel or perpendicular: line a: 3y+x=6 line b: y=3x+2 line c: 3x+y=0
January 3, 2011 by Blue13

math
Determine the rule when gradient =2,x intercept =3 .can. anyone please explain,cause I know y intercept =c,but I don't know x intercept,thanks
September 14, 2014 by wa

statistics
in certain manufacturing processes parts must be machined tonwithin specified tolerences. the parts must have a mean length of of six inches plus or minus 0.26 inches .A SAMPLING PROCEDURE HAS BEEN ESTABLISHED to determine wether the ten parts are within the specified ...
March 16, 2010 by deedee

Statistics in Psychology
What is a proper Null and Alternative HypothesThe CEO of ABC manufacturing commissioned a study to look at the differences between the current salaries of her employees by employee job title. There were three job categories: clerical, custodial, and managerial. The study ...
August 17, 2014 by Annette Hill

K
(a) Find the indefinite integrals of the following functions. (i) f (t) = 6 cos(3t) + 5e^−10t (ii) g(x) = 21-12x^3/ x (x > 0) (iii) h(u) = cos^2( 1/8 u) (b) Evaluate: (this big F sign at the start, 5 at the top and 1 at the bottom) 5 1/4x (7 + 6x^2) dx F 1 (c) (...
March 24, 2008 by maths

Art
How did his artwork reflects or defines his time period? In 1842, through friendly influences, vanderlyn he was commissioned by Congress to paint The Landing of Columbus. When he went to Paris, he hired a French artist, it was said that he did most of the work. Vanderlyn he ...
April 15, 2009 by marcellous

Chemistry
Given 2Al2O3 (s) --> 4Al(s) + 3O2 (g) (standard enthalpy change= 3351.4 kJ) a) What is the heat of formation of aluminum oxide? How do I find heat of formation from standard enthalpy change? I know how to do it when I'm given enthalpy, but they aren't the same thing- ...
January 31, 2007 by Chris

Physics - Please help!
Ironman steps from the top of a tall building. He falls freely from rest to the ground a distance of h. He falls a distance of h/ 3 in the last interval of time of 1.1 s of his fall. Hint: First, compute the velocity when Ironman reaches the height equal to the distance fallen...
October 22, 2010 by Anonymous

Orgo
Assume that during an extraction experiment you have lost track of which layer is the aqueous layer. How could you determine which layer is which by the use of a simple test?
October 5, 2009 by Carrie

chemistry
Determine the expression for the equilibrium constant for this equilibrium reaction: 2NO(g) + 2CO(g) (arrows)(in equilibrium with) N2(g) + 2CO2(g) PLease help anyone i really apreciate it Beccy
January 8, 2011 by rebecca niles

Math-New Question
One card is selected from a deck of playing cards. Determine the probability of selecting: a card greater than 9 or a black card
July 26, 2011 by Jen

physics
the velocity of a car increases from 36km/hr to 54km/hr in one minute determine the force exerted by the engine on the car mass of the car is 120kg
August 21, 2011 by Anonymous

Trigonometry
determine real numbers a and b so that the expression 8sin^2(theta) + 2cos^2(theta) can be rewritten as (a)sin^2(theta) + b? If you can help me out on how to start it would be great.
August 28, 2011 by Andres

statistics
Determine the 90% confidence interval for a sample, taken from a normally distributed population, that has a mean of 685, a sample standard deviation of 74, and a sample size of 29
November 1, 2011 by Tierra

statistics
Determine the 90% confidence interval for a sample, taken from a normally distributed population, that has a mean of 685, a sample standard deviation of 74, and a sample size of 29
November 1, 2011 by Tierra

Trig
Half Angle Identities cosx = 7/25 greater than 270 deg and less than 360 Determine cos 1/2x a. -7rt2/10 b. 7rt2/5 c.7/25 d.-4/5 I get 7rt2/5 Is this correct??
January 2, 2012 by Don

physics
A wave traveling in the  + x direction has an amplitude of 0.35 m, a speed of 5.2 m/s, and a frequency of 14 Hz. Determine: 3.1.the wavelength, (2) 3.2.the wave number, (2) 3.3the angular velocity, (2) 3.4. the equation of the wave
February 16, 2012 by joe

PHYSICS
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!
March 10, 2012 by Kelly

PHYSICS
Determine the value for the acceleration due to gravity at the surface of the planet Mars, given the following data: Mass of Mars = 6 .42 x 10^23 kg Radius of Mars = 3.37 x 10^6 m Thanks!
March 10, 2012 by Jake

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