Friday

November 27, 2015
Total # Posts: 1,367

**College Chem**

Thanks DrBob222 :)
*January 16, 2012*

**College Chem**

A 2.446-g sample thought to contain only one volatile substance, MgCO3, was heated in a nitrogen atmosphere for 30 min. After cooling, the residue weighed 2.216 g. Calculate the percentage of magnesium carbonate in the sample.
*January 16, 2012*

**algebra**

thanks for your help very much steve.
*January 16, 2012*

**algebra**

given point slope form linear equation to use in answers y-3=3(x+ 1) a.What is equation in standard form of a parallel line that passes through (0, -2)? y = 3x -2 -3x + y = -2 b. on parallel line find the ordered pair where x = -2? would it be -2.0 if not what about? -2, -8 -3...
*January 16, 2012*

**algebra**

could you see if my answers are correct?? if not could you please help me get them right? thanks very much A train leaves a station at noon. train is 180 miles from its destination at 12:45 pm and 90 miles from its destination at 2:15. how far is station from destination?225 ...
*January 13, 2012*

**English**

so it would be this way: Everyone has a need to feel accepted and cared about, and it is family and friends that play a vital role in an individual’s lifestyle choices
*January 13, 2012*

**English**

would that be better: Everyone has a need to feel being accepted and cared about, and it is family and friends that play a vital role in individual’s lifestyle choices
*January 13, 2012*

**English**

Is this sentence grammatically correct? ''Everyone has a need to feel accepted and being cared about and it is family and friends that play a vital role in individual’s lifestyle choices.''
*January 13, 2012*

**algebra**

thank you so much for your help Henry, I really appreciate it. Ann I understand now where I went wrong. first mistake i made was using positive 1/3 and then it was downhill from there.
*January 12, 2012*

**algebra**

Could you please help me?? point-slope form linear equation y-3 = 3(x+1) what is the equation in standard form of a perpendicular line that passes through (5,1). i think you take 1/3 as slope, reciprocal, I am confused about how to proceed. I know you put variables on one side...
*January 12, 2012*

**algebra**

thanks for your help. i really appreciate it. ann
*January 11, 2012*

**algebra**

could you please see if i have correct answers thanks very much use the point-slope form linear equation y-3=3(x+1) a. slope is 3 b. point this line passes thru that is basis of this equatio y = 3 x = -1 c. rewrite this equation in slope-intercept form y = mx+b y-3=3(x+1) y-3+...
*January 11, 2012*

**physics**

A child and sled with a combined mass of 59.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 3.40 m/s at the bottom, what is the height of the hill?
*January 9, 2012*

**algebra**

please help me find error: f(1) = 1/3 -4/3(1) =1/3 - 4/3 = - 3/3 = -1 should -1 be +1 or is there no error thanks note i reduced question from posting about 10 am this morning.
*January 6, 2012*

**algebra**

thank you very much,
*January 6, 2012*

**algebra**

please help me find error: f(1) = 1/3 -4/3(1) =1/3 - 4/3 = - 3/3 = -1 should -1 be +1 or is there no error thanks note i reduced question from posting about 10 am this morning.
*January 6, 2012*

**algebra 1 function question**

given functions f(x) = 3x-5 and g(x) = 1/3 - 4/3x correct the error g(-3) = 1/3 - 4/3(3) = 1/3-4 = - 3 2/3 error i believe is 3 should be -3 so g(-3) = 1/3 - 4/3(-3) 1/3- (4/3 times -3/1) = 1/3 -( -12/3)= 1/3 +12/3 = 13/4 = 4 1/3 other one: f(1) = 1/3 - 4/3(1) = 1/3 - 4/3 = -3...
*January 6, 2012*

**Math**

The sides of a rectangle are in the ratio 2:5. The perimeter of the rectangle is 70cm. What is the Width of the the rectangle.
*January 4, 2012*

**calculus**

The derivative of f(x) = x^4/3 - x^5/5 attains its maximum value at x=
*December 28, 2011*

**math**

The derivative of f(x) = x^4/3 - x^5/5 attains its maximum value at x =
*December 27, 2011*

**physics**

A girl throws a slingshot pellet directly at a target that is far enough away to take 0.9 s to reach. How far below the target does the pellet hit? m How high above the target should she aim? m
*December 21, 2011*

**physics**

i need help w part b and c A proton is released from rest in a uniform electric field of magnitude 388 N/C. (a) Find the electric force on the proton. magnitude N direction (b) Find the acceleration of the proton. magnitude m/s2 direction (c) Find the distance it travels in 2....
*December 20, 2011*

**physics **

Two 4.0-g spheres are suspended by 9.0-cm-long light strings (see the figure). A uniform electric field is applied in the x-direction. If the spheres have charges of −3. 10-8 C and +3. 10-8 C, determine the electric field intensity that enables the spheres to be in ...
*December 20, 2011*

**algebra**

Thank you very much for explaining it to me. I am taking my first algebra course and I am having a difficult time in undestanding my text. You made this so clear. I really appreciate it. thanks Ann
*December 16, 2011*

**algebra**

please is this correct? write a direct variation equation that relates atoms of O oxygen to atoms of hydogen H Mary combined 8 atoms of hydrogen and 4 atoms of oxygen to get 4 molecules of water is this equation correct? O + 2H = WM
*December 16, 2011*

**algebra**

thank you drwls and damon, i really appreciate you help. ann
*December 16, 2011*

**algebra**

I posted this question earlier but I think I asked for too much so I am trying again and giving the answer I have, If you could tell me if it is correct, I would appreciate it. A sub is 7500 meters below sea level surfaces at rate of 80 meters per min. the depth of sub after m...
*December 16, 2011*

**algebra**

submarine is 7500 meters below, surfaces at rate of 80 meters per min. depth of sub after m minutes is given by d(m) = -7500 + 80m a. please give range for this function i thought -7500, is this correct? thanks b. make a table for graphing this function/ do not know how c. ...
*December 15, 2011*

**geometry**

For triangle ABC, if A is 52 degrees, B is 88 degrees, and C is 40 degrees, is AB the longest side
*December 12, 2011*

**physics**

A dockworker loading crates on a ship finds that a 20 kg crate, initially at rest on a horizontal surface, requires a 73 N horizontal force to set it in motion. However, after the crate is in motion, a horizontal force of 50 N is required to keep it moving with a constant ...
*December 7, 2011*

**physics**

The distance between two telephone poles is 59.0 m. When a 1.00 kg bird lands on the telephone wire midway between the poles, the wire sags 0.200 m. draw a free-body diagram of the bird. (do this on paper. your instructor may ask you to turn in this work.) how much tension ...
*December 7, 2011*

**biology**

thanks thats what i thought since he looked at where they lived water for fish and whale. thanks a lot ann
*December 6, 2011*

**biology**

Aristotle's system of classification, which 2 animals would be grouped together? A, seagulls and lizards B.seals and bats c. snails and butterflies d. whales and fish thanks
*December 6, 2011*

**biology**

thank you cam for your help.
*December 6, 2011*

**biology**

mammals are most closely related t : A, amphibians B. birds C. arthropods tks.
*December 6, 2011*

**NEED HELP drawing a visual for this question**

red-blue-purple = 4-3-2. red =160; blue = 120; purple -= 80. New total 560. Red has increased from 160 to (add 75% = 120) 280. Extra blue is 200 - 120 = 80. Total blue = 120 + 80 = 200. Blue as percentage of red = (200/280)x100 = 71.4%
*December 6, 2011*

**calculus**

what is the derivative of log3(x+X^2) log with base 3 i cant figure it out
*December 5, 2011*

**algebra**

thank you so much Henry, i really appreciate your help.
*December 4, 2011*

**algebra**

I made a typing error on last post so I thought I would try again . thanks for your help. Use the percent equation to answer the following. solve the percent equation for b. percent equation is a= p% . b i saw in text it set up as cross products a/b = p/100. I thought about ...
*December 4, 2011*

**algebra**

thanks, my typing let me down it should be solve for b
*December 3, 2011*

**algebra**

use the percent equation to answer the following. solve the percent equation for h percent equation is a/b=p/100 thanks
*December 3, 2011*

**algebra**

thank you ms Sue , i put that percent equation back on from yesterday, that was all the info given.
*December 3, 2011*

**algebra**

solve the formula for the indicated variable solve the volume of a rectangular prism v=lwh, for h
*December 3, 2011*

**algebra**

please help solve the percent equation for b. thanks
*December 2, 2011*

**algebra**

please write algebraic equation and solve thanks length of movie projected at 24 frames per second ; length(L)=24 f. solve for f
*December 2, 2011*

**algebra**

thank you
*December 2, 2011*

**algebra**

Please rewrite the following equation so that y is a function of x. 3x+18y=36 thanks for your help.
*December 2, 2011*

**algebra**

please help me write a complete algebraic solution thanks problem 18. mike, alex, olivia ran for the office of president of their senior class . of the 400 votes cast, olivia received 38% of the votes and michael received 116 votes. A. What % of the votes did michael receive? ...
*December 2, 2011*

**algebra**

please help me put this in algebra equation? baseball regular season =162 games after playing 54 of them team a has 28 wins . A. how many wins will team have at end of season, 54/162 = 1/3 so I know answer is 28 x 3 = 84 wins B. what is % of games won by team so far this ...
*November 23, 2011*

**algebra**

tks Reiny, i am having problems with these equation set-ups.
*November 23, 2011*

**algebra**

please help me write algebraic equation/ solution if membership for local zoo is $135, members do not pay admission but they are charged $3. to park . non-members admission is $25. for the zoo and $5. for parking. After how many visits have members and non-members paid the ...
*November 23, 2011*

**psychology**

choose three or four of the recommendations for happiness that you have practiced in your life.
*November 21, 2011*

**psychology**

Im doing a powerpoint on the pursuing happiness need so help on how to go about working on it
*November 21, 2011*

**Physics**

A 64.1-kg athlete leaps straight up into the air from a trampoline with an initial speed of 7.4 m/s. The goal of this problem is to find the maximum height she attains and her speed at half maximum height. Write the general equation for energy conservation and solve for the ...
*November 21, 2011*

**physics**

Help. Can someone provide a formula. ty The electric motor of a model train accelerates the train from rest to 0.540 m/s in 35.0 ms. The total mass of the train is 685 g. Find the average power delivered to the train during its acceleration.
*November 21, 2011*

**physics2ndquestion**

the consumption of natural gas by a company satisfies the empirical equation V= 1.5t + 0.008t^2 where V is in volume in millions of cubic feet and t is the time in months. rewrite the equation in unit of cubic meter nd seconds. put the proper units on the coefficients. assume ...
*November 21, 2011*

**PHYSICS**

thanks :) can you answer the sub question for this prob? it says "rewrite the equation in unit of cubic meter nd seconds. put the propr units on the coefficients. assume a month is 30 days"
*November 21, 2011*

**PHYSICS**

the consumption of natural gas by a company satisfies the empirical equation V= 1.5t + 0.008t^2 where V is in volume in millions of cubic feet and t is the time in months. what are the dimensions of the constants 1.5 and 0.008?
*November 21, 2011*

**college physics**

A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.860 m/s encounters a rough horizontal surface of length = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.355 and he exerts a constant horizontal force ...
*November 21, 2011*

**algebra**

Thanks anna
*November 14, 2011*

**algebra**

evaluate the following please |-25| I put 25 as answer,, is this right the lines are staight lines Thanks for your help.
*November 14, 2011*

**Science/Physics**

An astronaut is about 20 m from her space station when the rocket thrusters run out of fuel. If she is carrying a few tools and can remove the rocket thruster, what should she do to get back to the space station? Explain reasoning.
*November 13, 2011*

**algebra**

thanks they were straight lines so I am going with 0 thanks
*November 13, 2011*

**algebra**

Describe and correct error [-13]- [13] = -13 - 13 = -26 thanks
*November 13, 2011*

**English**

The greed of the 1980s gave way to the occupational insecurity of the 1990s, which in turn gave way to reinforced family ties in the early 2000s
*November 4, 2011*

**math**

a savings account has increased over a 12 month period from 8765 to 9006.04. No deposits or withdrawals were made. What percent interest did he receive in a 12 month period
*November 3, 2011*

**algebra**

thanks, i could not see it ann
*November 1, 2011*

**algebra**

what is rule for this function input 0,1,3,4 and range 4,3,1,0
*November 1, 2011*

**math**

solve the equation. check the solution 5 x g -5 = 100
*October 31, 2011*

**science**

The kinetic energy of a baseball weighing 0.5 kg in its mid flight is 100 J. How high one needs to take the same ball so that it has the same potential energy?
*October 28, 2011*

**science**

a bullet has a momentum of 20kg*m/s -How fast would a car weighing 1200 kg should be moving to have the same momentum as the bullet expressed in miles/hr?
*October 28, 2011*

**english**

Need to draw a single line under the Complete Subject, and a double line under the Complete Prediate. Thanks? 1. Hundreds of were flying around the dock. 2. Onrainy days, does the fog obiterate your view? 3. A whale's big, bulky body can be a fearsome sight. 4. A huge ...
*October 27, 2011*

**music**

Jody says that atonal harmony establishes a harmonic center of gravity. Sean says that atonal harmony doesn't have a harmonic center of gravity. who is correct? A. Only Jody is correct. B. Only Sean is correct. C. Both Jody and Sean are correct. D. Neither Jody nor Sean is...
*October 27, 2011*

**MATH 101**

How do you solve system of equation problem. example x+3y=32 -3x+2y+3 and x+y=6 x-y=-9
*October 26, 2011*

**mgt/230**

ok i got that part now i dont understand what they want me to understand is this evaluate how organizational functions (such as marketing, financel, human resources, and operations) influnce and determine the organizations structure of target?
*October 24, 2011*

**mgt/230**

yes i did I'm just not getting it sorry
*October 24, 2011*

**mgt/230**

does organizational structure mean things like the presidents ceo's managers and so on
*October 24, 2011*

**mgt/230**

does that mean two different companys or organizational structures of burger king?
*October 24, 2011*

**mgt/230**

Ok need help not getting this I'm to descrbe the organizational structure of you selected organization i chose burger king, then Im supposed to compare and contrast that structure with two different organizational structures? I m not sure what to do.
*October 24, 2011*

**positive psychology /220**

what kind of strategies would you use to strengthen any relationshp
*October 24, 2011*

**positive psychology /220**

write a 200-300 word response explaining which strategies you could use to stregthen the relationship and describe how the relationship would be stregthen.
*October 24, 2011*

**Math 101**

1. Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $123.00 for 3 days and 300 miles, while Mary was charged $216.00 for 5 days and 600 miles. What does Best Rental charge per day, for mileage? 2. There were 44,000 people at a ball ...
*October 23, 2011*

**Math 101**

1. Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged $123.00 for 3 days and 300 miles, while Mary was charged $216.00 for 5 days and 600 miles. What does Best Rental charge per day, for mileage? 2. There were 44,000 people at a ball ...
*October 23, 2011*

**psychology**

what are some strategies could be used to strengthen a relationship
*October 23, 2011*

**psychology**

what strategies could be used to stregthen a relationshi[
*October 23, 2011*

**mgt/230**

what is the relationship between organizational structure and organizational function? help please?
*October 23, 2011*

**statistics**

-1.36
*October 20, 2011*

**Math 101**

Suppose you have a cookie stand, and when you charge $3 per cookie box you sell 250 boxes. But when you raise your price to $4 you only sell 120 boxes. a. Write an equation for the number of boxes you sell as a function of the price you charge. b. Denote "B" for ...
*October 19, 2011*

**mgt/230**

Ok I figured out oart of it the legal one now im working on the ethic and corporate social and no luck so far help please
*October 16, 2011*

**mgt/230**

stuck again. analyze the influence that legal issues, ethics, and corporate social responsibilty have had on management planning at BP Provide at least one example for each help please
*October 16, 2011*

**mgt/230**

so they want me to do what? thats what I don't get.
*October 16, 2011*

**mgt/230**

need help been working on this for two days my mind is blank. evaluate the planning functions of management as it relates to the organizations goal and stragies for BP
*October 16, 2011*

**Science**

What body system is most like the mitochondria in cells? It has to be one of these: Respiratory Muscular Immune Nervous Since I already used the other systems.
*October 7, 2011*

**Chemistry**

I have a new column for HPLC (high-performance liquid chromatography) analysis. Is it advisable to condition the new column with the mobile phase overnight at a slow flow rate of 0.5ml/min?
*October 1, 2011*

**Reseach Methods**

Does inpatient groups work better than outpatient groups in a drug treatment program. What would be the hypothesis, independent,dependent and control variables?
*October 1, 2011*

**Physics**

The lowest pressure attainable using the best available techniques is about 10^-12 N/m^2. At such pressure, how many molecules are there per cm^3 at 0 degrees C. I know that PV= nRT and that you solve for n/v = P/RT. I have also converted from N/m^2 to atm and am using R = ....
*September 25, 2011*

**chemistry**

concentrated sulfuric acid has a density of 1.84 g/ml. calculate the mass in grams of 1.00 liter of this acid.
*September 22, 2011*

**chemistry**

what is the volume (in ml)of a liquid(density=2.07 g/ml)weighing 130.grams?
*September 22, 2011*

**chemistry**

1. 30.0 ml of ethyl alcohol(density=0.790g/ml)are added to a graduated cylinder that weighs 44.28 grams. what will be the mass of the graduated cylinder plus the alcohol(in grams)?
*September 22, 2011*

**chemistry**

1. 30.0 ml of ethyl alcohol(density=0.790g/ml)are added to a graduated cylinder that weighs 44.28 grams. what will be the mass of the graduated cylinder plus the alcohol(in grams)? 2. what is the volume (in ml)of a liquid(density=2.07 g/ml)weighing 130.grams?
*September 22, 2011*