Friday

May 27, 2016
Total # Posts: 934

**math**

need an aswer quich ok thiers two the find sin(2pi/3 -pi/4) using sum and difference identites and then tan 5pi/12 using the same identites
*August 3, 2009*

**Algebra Help**

I ran this through an equation solver and it it tells me x = 2 only?
*August 3, 2009*

**Algebra Help**

The way it is written is x+sqrt(11-x)= 5 x+ sqrt sign11-x = 5 the x is under the root sign then = 5 Would this still have the same conclusion? 2,7, or just 2 ?
*August 3, 2009*

**Algebra Help**

I have a question regarding this problem below? I noticed it in an eariler post, and have come to figure that my text book has it like this? What would be the solution for this? x+sqrt(11-x)= 5 x = 2? OR 2,7? OR NO solution? I say x = 2 only? Any Thoughts?
*August 3, 2009*

**calculus**

The illumination of an object by a light source is directly proportional to the strength of the source and inversely proportional to the square of the distance from the source. If two light sources, one three times as strong as the other, are placed 11 ft apart, how far from ...
*June 30, 2009*

**Algebra**

Exrpess each number in terms of i a. root-21 b. -root-59 c. -root-9 d. root-28
*June 23, 2009*

**Communications Theory**

Thank you! I am leaning towards Socio-Psychogical. Thank you all for your insight!
*June 21, 2009*

**Communications Theory**

Something like that. I need to know what his work fell into based on the 7 traditions of communication. Which of the seven best defined hs work? Rhetorical Semiotic Phenomenological Cybernetic Socio-Psychological Socio-Cultural Critical I would say either of the last 3. What ...
*June 21, 2009*

**Communications Theory**

Which of the larger 7 traditions of communication does Gerbner's work fall into?
*June 21, 2009*

**Algebra**

When Let f (x) = x^2 – 3x + 8 and g(x) = x – 5 Find Find the composite function of (fºg)(x) and simplify Find (fºg)(2) Find the composite function (gºf)(x)
*June 17, 2009*

**Math**

what is the square root of negtive 80
*June 17, 2009*

**Algebra**

I need to find the quotient function of the following: Given that f(x)=x^2-3 and g(x)=2x+1 find each of the following if it exists: a. (f/g)(-root3) b. (g/f)(-1/2)
*June 14, 2009*

**lit**

The Theme and writting style
*June 14, 2009*

**english.poem, Miss Rosie**

It's C
*May 27, 2009*

**Algebra 1**

3(x-2)>4(2x+11)
*May 20, 2009*

**Earth Science**

51,988.63 repeated
*May 11, 2009*

**computers**

To present displays and information, usually in slides.
*May 9, 2009*

**Math**

If every seven digit whole neumber is a possible phone number, except those that begin with 0 or 1, what fraction of telephone numbers begin with 9 and end with 0?
*May 3, 2009*

**Math**

240-80 = 160 acres Sunflowers = 80 acres flax
*March 30, 2009*

**Economics (attempted as suggested by economyst)**

a. 60 b. 60 c. 30*30+12=912 d. atc= (3600+60*30)/30=180 e. increasing, decreasing
*March 30, 2009*

**Spanish**

I am sorry, but I am not familar with Sra. Does she usually check this site frequently?
*March 30, 2009*

**Spanish**

Please someone?
*March 30, 2009*

**Spanish**

Please help. This is urgent.
*March 30, 2009*

**Spanish**

Please help me translate. Dear Juan, If you do not want your girlfriend to leave, you need to listen to me carefully. You were wrong. In a relationship, no matter the situation, the guy is always wrong. Be a man and tell her you made a mistake. I am sure she would appreciate ...
*March 30, 2009*

**Help with Translation**

Translate to spanish please.
*March 30, 2009*

**Help with Translation**

Please help me translate this short letter. Dear Juan, If you do not want your girlfriend to leave, you need to listen to me carefully. You were wrong. In a relationship, no matter the situation, the guy is always wrong. Be a man and tell her you made a mistake. I am sure she ...
*March 30, 2009*

**Literature / Short story I**

ccacddcacbbcdbbddab
*March 13, 2009*

**Algebra**

Thanks for the help!
*February 24, 2009*

**Algebra**

This is what I got. Which is correct? I don't know if you -6 - - 2 = -6 + 2 = -4 -1 + 3 = 2 -4/2 = -2 Slope m = -2
*February 24, 2009*

**Algebra**

Find the slope of the line that goes through the given points. I would apprecaite some feedback to this ?, but I think I have an idea how to figure it out! (3,-2),(-1,-6)
*February 24, 2009*

**Math**

I need 3 ordered pairs of points that would be solutions to this equation. Can anyone help please, thanks! 4x - y = 7
*February 19, 2009*

**Math**

The defining of reproducable physical measurments was made in a way that allowed scientests to validate each others findings. The boling point of pure water at 1 atmosphere of pressure is by defination 100 degrees C. For every day common use 1 standard atmosphere of pressure ...
*February 5, 2009*

**PhYSiCs**

A two end open pipe organ's sixth harmonic is produced by a tuning fork with a frequency of 440 Hz. If it is 17 degrees Celsius, what is the length of the tube?
*February 3, 2009*

**Math 116A**

I have been out of school for a very long time and I just enrolled to take some classes online and I am having a lot of trouble with my math. I just cannot seem to understand what it is that they want. Is there anyone that can help me with this. I am desperate. We are doing ...
*January 24, 2009*

**Chemistry**

Spectrophotometric measruments give us a little information about the comlpexity of the fractions that we obtain by solid phese extraction. To determine the identity and number of the compounds each fraction has , what should we do?
*December 9, 2008*

**Chemistry**

A solid-phase extraction cartidge has C18 material. What is the reason behind that all the characteristic grape juice color get transferred to the packing material of the cartridge?
*December 9, 2008*

**PhYsIcS - RoTaTiOnAl MoTiOn**

Oh, so you just convert the rotational motion into linear motion that can be used in a kinematic equation! Now I get it! Thanks!
*December 7, 2008*

**PhYsIcS - RoTaTiOnAl MoTiOn**

I know you use deltaTheta = 1/2(wi + wf)deltaT, but I don't know how to solve for the wf or t of the mud (the final velocity or the time it's in the air)
*December 7, 2008*

**PhYsIcS - RoTaTiOnAl MoTiOn**

A tire (0.8 m diameter) starts at rest and has an angular acceleration of 5 rad/s^2. If it moves for 10 seconds and then stops abruptly causing a blob of mud at the top of the tire to fly off, how far along the ground will the blob travel until it hits the ground?
*December 7, 2008*

**functions**

sin(15) = sin(45-30) sin(45)cos(30) - cos(45)sin(30) ^ Plug in values
*December 7, 2008*

**Square roots**

sqrt(1440) = 37.94733192
*December 7, 2008*

**Physics - Rotational Motion**

Whichever one is the easiest to analyze.
*December 7, 2008*

**Physics - Rotational Motion**

The 2d drawing that goes with #2 shows a circle at the top of an incline. \
*December 7, 2008*

**Physics - Rotational Motion**

(#1.) A top starting from 40 rad/s takes 200 rad to stop. What is its rotational acceleration? (a constant) (#2.) A stationary 100 Kg circular object (r= 0.20 m) is on a 35 degree incline. The coefficient of rolling friction between the block and the incline is 0.01. If it ...
*December 7, 2008*

**Physics - Rotational Motion**

(#1.) A top starting from 40 rad/s takes 200 rad to stop. What is its rotational acceleration? (a constant) (#2.) A stationary 100 Kg circular object (r= 0.20 m) is on a 35 degree incline. The coefficient of rolling friction between the block and the incline is 0.01. If it ...
*December 7, 2008*

**AP US History**

Benjamin Wade
*December 1, 2008*

**Math**

how could you use 5 x 6 = 30 to find the product of 6 x 6
*December 1, 2008*

**AP Chemistry**

all three?
*November 28, 2008*

**AP Chemistry**

Consider a 50.4 g sample of H2O(g) at 115°C. What phase or phases are present when 156 kJ of energy is removed from this sample? Specific heat capacities: ice, 2.1 J/g·°C; liquid, 4.2 J/g·°C; steam, 2.0 J/g·°C, ÄHvap = 40.7 kJ/mol, &...
*November 28, 2008*

**Chemistry**

Hi everyone, I'm having problems with effective nuclear charge. Regarding these problems. Calculate Zeff for a valence electron in an oxygen atom. and Calculate Zeff for the 4s electron in a copper atom, . and Calculate Zeff for a 3d electron in a copper atom, Cu. Like for...
*November 9, 2008*

**urgent Help .. Chemistry**

If you assume that an atom is a hard sphere, you can estimate the average volume of space it occupies using basic geometry. Estimate the volume,V , of one sodium atom (Na) using its metallic radius of 186 pm . Express your answer in cubic picometers.
*November 9, 2008*

**chemistry**

reaction between CuSo4+NaCl
*November 4, 2008*

**physics**

A 2 gram bullet traveling at 1500 m/s [East] hits a 200 g block of wood at rest, and becomes embedded in it. If the block is suspended by long ropes, how high will it travel before it comes to rest?
*November 3, 2008*

**social studies**

What was the type of ship that Hernando Cortes sailed? Thank you.
*October 26, 2008*

**College Physics**

Yeah this is from a physics lab. It was for a "Energy Works" lab where we trying to proof conservation of energy. Total energy = KE + Ug. We had a 2.2m long Dynamics Track with Dynamics cart. We used a "riser block" which was a wooden block to raise the ...
*October 25, 2008*

**College Physics**

Let's say you measure an average acceleration to be 0.3883 ms-2. What is the height (in centimeters) of the riser block? Assume the legs of the track span 1.0000 m and that there is neither friction nor drag. Also assume the block is under one of the legs. cm Use three ...
*October 25, 2008*

**7th grade science**

....... capacity is the largest numbers of individuals of one species that an ecosystem can support over time. What kind of capacity???
*October 22, 2008*

**Science**

The maximum rate of increase for a population is its......... potential.
*October 22, 2008*

**Chemistry (Orbital help needed)**

I just want to make sure I'm doing this right... (Numbers in brackets are the square roots or electrons) "How many orbitals are completely filled in an atom that has 12 electrons? The electron configuration is 1s[2]2s[2]2p[6]3s[2]?" It would be 2 right? I'm ...
*October 22, 2008*

**Project Management**

How does the design phase of the project management life cycle differ in content and importance from the other phases?
*October 21, 2008*

** government**

durrrr..
*October 19, 2008*

**math**

A science workbook is 0.75 inches thick. How many workbooks will fit on a 2-foot shelf? what is the equation? estimation?
*October 17, 2008*

**math**

A science workbook is 0.75 inches thick. How many workbooks will fit on a 2-foot shelf? what is the equation? estimation?
*October 17, 2008*

**math**

A science workbook is 0.75 inches thick. How many workbooks will fit on a 2-foot shelf? what is the equation? estimation?
*October 17, 2008*

**Project Management**

List the personal and professional characteristics necessary to be an effective project manager. What characteristics are learnable?
*October 8, 2008*

**chemistry**

yes that solved everything thanks!
*October 4, 2008*

**chemistry**

Ibuprofen, the active ingredient in Advil, is made up of carbon, hydrogen, and oxygen atoms. When a sample of ibuprofen, weighing 5.000 g, burns in oxygen, 13.86g of CO2 and 3.926 g of water are obtained. What is the simplest formula of ibuprofen? I need to find out if I'm...
*October 4, 2008*

**ALGEBRA**

can you help me with this. d dont get it at all :( let n be the number used for the given number puzzle. use algebra to show how the puzzle works. 1. pick a number 2. subtract 9 3. multiply by 6 4. divide by 3 5. add 18 6. subtract twice your original number You will always ...
*September 24, 2008*

**Chemistry**

Imagine that you have a 6.00L gas tank and a 4.00L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145atm , to what pressure should you fill the...
*September 21, 2008*

**Physics**

Oh okay thank you very much.
*September 16, 2008*

**Physics**

Hey I'm not sure how to solve this problem: An 1840 kg car is moving to the right at a constant velocity of 2.94 m/s. What's the netforce? What's the netforce if the car would be moving to the left? I'm thinking that the net force going right and the net force ...
*September 16, 2008*

**accounting**

i HAVE A BALANCE SHEET FOR A COMPANY AND i WOULD LIKE FOR SOMEONE TO TELL ME IN LAYMAN TERMS WHAT IT SAYS
*September 12, 2008*

**computers**

Why do you think the requirements analysis process is so difficult?
*September 9, 2008*

**Critical Thinking**

I could not identify vague, ambiguous, or rhetorical devices in this article. Can you tell me if I am missing something? John Kerry is making the outsourcing of jobs by American companies a centerpiece of his campaign, telling audiences that ''because of George Bush&#...
*September 6, 2008*

**Biology**

The following chemicals have the indicated formula weight Surcose = 342.3g; Potassium dihydrogen=136.09; and Tris=121.14 Also the following solution already made: 20%SDS, 5M NaCl, 500mM EDTA. You have a 40% glycerol solution, and 10X TBE. List the step to make the following ...
*August 27, 2008*

**Physics**

Given the initial position of a particle is x(0)=2m at t(0)=0s. At t=2s, what are the particle's (a) position, (b) velocity and (c)acceleration?
*August 26, 2008*

**Grammer questions check**

Identify the locations or locations where apostrophe errors occur: (A) When the dog knocked over it's (B) bowl, the little girl claimed that the dog wasn't (C) her's
*August 13, 2008*

**calculus**

what is the integral of x^(2)arctan(6x) dx?
*May 22, 2008*

**math**

a ______________ is a mathematical rule.
*May 21, 2008*

**math**

what is a mathematical rule?
*May 21, 2008*

**novel**

1)B 2)C 3)C 4)D 5)D 6)C 7)B 8)B 9)C 10)B 11)A 12)C 13)A 14)B 15)D 16)C 17)A 18)D 19)A 20)D
*May 21, 2008*

**Chemistry -- to Dr.Bob**

whom should i link up with to meet the challenge of spending the next two hours blowing up rubber balloons by mouth besides old huff and puff luc,eh what?I`m woefully loneley for Mr.Adams.Thanks
*May 2, 2008*

**English**

Summarize Paris' request of Capulet, and Capulet's response?
*April 11, 2008*

**math**

which allows you to convert pounds and tons to ounces?
*April 7, 2008*

**creating surveys**

how to create a survey
*March 30, 2008*

**Accounting**

Identifying and journalizing Closing Entries Klein Photography
*March 5, 2008*

**non fiction**

An enjoyment of solitude
*March 3, 2008*

**Math (Geometry)**

I only describe one because that is the one I am having trouble with, the others were simple since it would show a figure composed of 5 triangles and only 2 would be shaded. (2/5)
*February 29, 2008*

**Math (Geometry)**

"Target Games: Darts are thrown at each of the boards shown below. A dart hits the board at a random point. Judging by appearances, find the probability that it will land in the shaded region." This figure is a diamond (the diamond is not shaded) and it has half a ...
*February 29, 2008*

**history**

which sides slave on during the Civil war? and why did they switch side?
*February 25, 2008*

**history**

why most American slaves dont have birth record?
*February 24, 2008*

**math**

Discuss the relationship between the graphs of the lines with equation y = mx +2, where m is any real number.
*February 22, 2008*

**Math (Geometry)**

Yeah it left me clueless too, oh well, I will just have to hope I get them right. XD
*February 21, 2008*

**Math (Geometry)**

See thats exactly what I thought, the 22% one was #1 but when I checked it in the back of the book it said it should be 25. Could the book be wrong? (It also says #3 should be 32)
*February 21, 2008*

**Math (Geometry)**

"The graph shows types of trash in a typical American city. Find the measure of each central angle to the nearest whole number." (I do not want all the answers, I just want to know HOW to get them so I will only post the first three problems that corresponds with the...
*February 21, 2008*

**Spelling**

Hello Can Anyone help me spell the word ( ACK-ROW-NIM ) For Instance DOB Is An ACK ROW NIM For Date Of Birth. THANK YOU in Advance Robert
*February 10, 2008*

**chemistry**

A saturated solution of ammonium sulfate, (NH4)2SO4, in water at 30 0C contains 78.0 g (NH4)2SO4 per 100.0 g H2O. What is the molality of this solution?
*February 5, 2008*

**Physics**

A 40.0kg child is in a swing that is attached to ropes 2.00m long. Find the gravitational potential energy associated with the child relative to the child's lowest position under the following conditions: a) When the ropes are horizontal b) When the ropes make a 30.0 ...
*February 5, 2008*

**history**

what is The trans-Atlantic slave trade and its most lasting consequence.
*February 5, 2008*

**math**

A figure is transformed into a new figure by being rotated 180 degrees, translated left 6 units, and dilated by a factor of 4. How are the old and new figures related? a)both congruent and similar b)congruent but not similar c)similar but not congruent d)neither similar and ...
*January 31, 2008*