Thursday

December 18, 2014

December 18, 2014

Total # Posts: 982

**Math**

Use a counter example to show that cos(x+y)= cosx +cosy is not an identity
*November 24, 2009*

**Math**

Use a counter example to show that cos(x+y)= cosx +cosy is not an identity
*November 24, 2009*

**world history**

What was one Indian tribe that hunted and trapped furs for traders
*November 23, 2009*

**trig**

unsure how to find phase shift,vertical shift of y=-2cos(x+3.14/4)+5
*November 23, 2009*

**social studies**

how do I do a timeline chart describing or listing events that represent each year of my life?
*November 13, 2009*

**chemistry**

For caco3 ksp 8.0 x 10-13 at 25c what is the solubility of caco3 at this temperature?
*November 10, 2009*

**physics**

A barge with mass 1.0×105 kg is proceeding down river at 5.8 m/s in heavy fog when it collides broadside with a barge heading directly across the river (see the figure). The second barge has mass 2.58×105 kg and was moving at 4.2 m/s. Immediately after impact, the...
*November 6, 2009*

**History**

I need information on technology in the criminal justice system in 1970-1980; such as the finger print system and other technological things that were developed
*November 5, 2009*

**Math**

Draw Ray SL
*November 3, 2009*

**Investing**

Sonny owns $5,000 worth of High Risk Enterprises (HRE) stock. HRE has a standard deviation of 16 percent and a beta of 2.0. He wants to invest another $5,000 and create a $10,000 portfolio that is equally as risky as the overall market. Which one of the following will ...
*October 26, 2009*

**math/stock**

You want to create a $75,000 portfolio comprised of two stocks plus a risk-free security. Stock A has an expected return of 13.6 percent and stock B has an expected return of 11.4 percent. You want to own $30,000 of stock B. The risk-free rate is 4 percent and the expected ...
*October 26, 2009*

**Math**

Sonny owns $5,000 worth of High Risk Enterprises (HRE) stock. HRE has a standard deviation of 16 percent and a beta of 2.0. He wants to invest another $5,000 and create a $10,000 portfolio that is equally as risky as the overall market. Which one of the following will ...
*October 26, 2009*

**Finance**

You would like to create a portfolio that is equally invested in a risk-free asset and two stocks. The one stock has a beta of .80. What does the beta of the second stock have to be if you want the portfolio risk to equal that of the overall market?
*October 26, 2009*

**fiance**

Sonny owns $5,000 worth of High Risk Enterprises (HRE) stock. HRE has a standard deviation of 16 percent and a beta of 2.0. He wants to invest another $5,000 and create a $10,000 portfolio that is equally as risky as the overall market. Which one of the following will ...
*October 26, 2009*

**fiance**

You want to create a $75,000 portfolio comprised of two stocks plus a risk-free security. Stock A has an expected return of 13.6 percent and stock B has an expected return of 11.4 percent. You want to own $30,000 of stock B. The risk-free rate is 4 percent and the expected ...
*October 26, 2009*

**Math**

5a-3a=18. What does a equal?
*October 18, 2009*

**Algebra**

Find all real values of x such that f(x) = 0 f(x) = 3 + 1 x – 2
*October 16, 2009*

**science**

what are the pros and cons of thermal expansion?
*October 12, 2009*

**Chemistry**

Thank you. This is what I have so far, do you mind telling me what else I should add to this. 1-decanol has the strongest intermolecular forces followed by 1-pentanol and 1-butanol with the weakest intermolecular forces. The reason for this is because 1-decanol has the most ...
*October 12, 2009*

**Chemistry**

Hi there, I have to create a paragraph discussing 1-pentanol, 1-decanol and 1-butanol in regards to the principles of intermolecular bonding. Which one of the molecules have stronger intermolecular forces and why? Could you give me some pointers or tips I'm having ...
*October 12, 2009*

**math**

You have a 1/6 chance of a 6 on each roll, 1/6*1/6=1/36 chance of rolling two in a roll. Making it a very rare chance
*October 9, 2009*

**math**

find the LCD, which is 24 and multiply each fraction to get to the LCD 2/3----> 18/24 5/8----> 15/24 now add them 18+15 = 33 so you get 33/24
*October 6, 2009*

**Science **

ocular
*October 6, 2009*

**sci**

1. both eukaryotic 2. some proteins in the cells are similar 3. share many genes in common hope thats what you were looking for
*October 6, 2009*

**biology**

matter?
*October 6, 2009*

**Grammar**

OMG what is with my typing today 1, of course, is C im sorry
*October 6, 2009*

**Grammar**

a and b
*October 6, 2009*

**algebra**

make everything into twelfths, so you have... 9/12k-2/12 =6/12 take out the 2/12 so... 9/12k=8/12 so now you divide 8/12 by 9/12 = 8/12*12/9 = 96/108 and simplify to 8/9 so k = 8/9
*October 6, 2009*

**Science**

well... its still clear, that's your problem you won't "see" it because you can't really see depth using a light microscope and of course its transparent.
*October 6, 2009*

**Science**

cytoplasm is essentially a clear liquid that holds everything in place since it's transparent, logically speaking if you just shine light through it (and dont stain it or anything) you wont see it
*October 6, 2009*

**MATH**

zero! when you multiply by five, you'll always get a number ending in 0 or 5. multiplying by two means if you get one ending in 5, it gets timesed by 2 and equals zero anyways try it with any number
*October 6, 2009*

**math**

the answer is 10squareroot 3. 25 root 24 simplifies to 50 root 6, then you divide the 50 by 5 and the root 6 by root 2 to get 10 root 3. hope that's clear enough
*October 6, 2009*

**MATH grade 10**

so basically you have a circle, right? and the equation of a circle is x^2+y^2 = r^2 so in this case your r, or radius is root of 64, or 8 if the radius of the circle is 8, use the formula for circumference of a circle (c=2pi(r)) to find the length of fencing so... c=2pi(8) so...
*October 6, 2009*

**elementary social studies**

"factors of production"
*October 6, 2009*

**Math 11**

a parabola on a graph opens upwards if the "a" value in y=a(x+b)^2+c is positive. If "a" is negative, it opens downwards. in the example it would open down, because the "a" value is negative
*October 6, 2009*

**math**

yes
*October 6, 2009*

**chemistry**

ahhh crud sorry i forgot about the % of H2O2 go with DrBob
*October 6, 2009*

**chemistry**

so basically since you have 250ml of solution, therefore you have 250g of H2O2 (i think you might have put in a typo)... now you calculate number of moles of H2O2 (the molar mass is approx 34 g/mol) with the formula number of moles = mass/molar mass now use mole ratios to find...
*October 6, 2009*

**English**

Best story i've had to read in school. The meaning i took from it is that AIs and "thinking machines" are more human in their behavior than we assume them to be example: the teaching machine hates its job and feels its talents are wasted on teaching grade 6 english
*October 6, 2009*

**lord of the flies**

Three of the boys go on a second exploration. this time they search for the beast. who goes? how might this experience have been different if Simon had gone? this is in chapter 7
*September 30, 2009*

**Physics**

A research balloon of total mass 445 kg is descending vertically with a downward acceleration of 1.3 m/s2. How much ballast must be thrown from the car to give the balloon an upward acceleration equal to 1.5 m/s2, presuming that the upward lift of the balloon does not change.
*September 28, 2009*

**History**

in the U.S. for any ages really..I am looking for significant developments of how education has progressed during the years. from one-room schools houses to elementry schools, high schools, were colleges developed and such? information as such
*September 27, 2009*

**History**

I am having an extremely hard time finding anything on education during 1890-1920; I can't find enough or hardly any information that is useful. I have googled all I can... Help! Thanks
*September 27, 2009*

**History**

i need help finding information (websites) on what education was like during the 1879-1899 and 1900-1919 Thanks
*September 26, 2009*

**History**

how were consensual crimes controled during the 1850-70's
*September 20, 2009*

**Math PIZZAZZZ**

its a cattle act
*August 27, 2009*

**algebra**

Evaluate the expression for the given value of the variable.. 0.3xwhen x=2.5
*August 25, 2009*

**MATH Prob.**

180
*August 20, 2009*

**Math**

I need to know the square root of 196.
*August 12, 2009*

**biology**

A child is born witrh cystic fibrosis-a recessive trait. However, both his parents do not exhibit the trait. How is this possible?
*June 30, 2009*

**Math**

how do you find the volume and surface area of a regular triangular pyramid?
*June 3, 2009*

**Research Writing Com 220**

It depends on your prompt. What are you asked to research?
*May 18, 2009*

**chemistry**

What is the pH of the solution created by combining 2.40 mL of the 0.10 M NaOH(aq) with with 8.00 mL of the 0.10 M HC2H3O2(aq)? So, here's my working so far: .00024 mol NaOH .0008 mol HC2H3O2 .0008 - .00024 = .00056 mol HC2H3O2 .00056mol / 0.0104L = .05385 M HC2H3O2 The Ka...
*May 4, 2009*

**History**

What role did the economic objectives play in founding New England?
*May 3, 2009*

**math**

yea yours forever isnt tillen datime....
*March 30, 2009*

**Science**

What does a 3d model of cesium look like?
*March 23, 2009*

**science**

i'm doing my science project on how temperature effects soda going flat. why does soda go flat sooner on summer days? thank you.
*March 12, 2009*

**English**

How do you know if a homework sheet thats says use certain,uncertain,likely,or unlikely on the lines below, without getting yourself so mixed up and confused, about it.
*March 3, 2009*

**social studies**

What countries did Fidel Castro help gain independence
*March 2, 2009*

**Debating**

Is this part of a broader topic?! A definition is usually not debateable.
*February 27, 2009*

**DNA &RNA**

For similarities, I would say that they both have hydrogen bonds. . . DNA is double stranded whereas RNA is single stranded. Two helices for DNA but one helix for RNA . . . RNA comes from the master plan blueprint called DNA. . . . RNA comes in messenger and transfer varieties...
*February 26, 2009*

**English - Julius Caesar**

I'm doing a project on Brutus in english class, and one of my assignments is to do a character trait chart that gives a trait (like brave, noble, honorable, etc.) for Brutus on each act. I can't decide which traits to use. >_< Could anyone offer some traits I ...
*February 26, 2009*

**Math**

This is a hard one. What helps me is to read each part of the problem carefully. Write the numbers you think on a piece of paper. When you find out if it is wrong put an x next to it. This will narrow down the process.
*February 24, 2009*

**Algebra**

What bob said is right. you do y2 - y1 _______ x2 - x1 That is a fraction (-1,-6) are the y's and (3,-2) are the x's. -1 is y1 and -6 is y2. and the same goes for the x's.
*February 24, 2009*

**4th grade**

bob I got one thing wrong, and it was about stupid alchol stuff that I got off of Wiki answers, I was just trying to help. :(
*February 24, 2009*

**4th grade**

I just looked it up and it can be either. Heroine- An opiod that is synthesized from morphine. It is an analgesic that causes euphoria. It is usually injected intravenously. ... Heroine- A female Hero
*February 24, 2009*

**4th grade**

sorry, but just trying to help. I will only commment to people on things I ABSOLUTLEY KNOW. Do we have an accord bobpursley?
*February 24, 2009*

**4th grade**

yea okay thats why I just helped about 10 people. Bella said the same thing I did. And heroine is a drug. ..... (stupid)
*February 24, 2009*

**3rd grade**

Ok. A gram is something you use to weigh little things like nickels and pencils. Kilograms you use to weigh big things like back packs and radios! ;)
*February 24, 2009*

**intro chemistry**

Ethanol is a weak base with a rather neutral pKa, so it can not change the bodies pH. People have been saying that alchol is both a acid and a base. It depends on what type of alchol you are talking about. Wine is mostly acidic and beer is slightly acidic. Rubbing alchol is ...
*February 24, 2009*

**intro chemistry**

whoa what happened!
*February 24, 2009*

**intro chemistry**

I think CH3OCH2CH2CH3 is some kind of chemicle found in rubbing alchole or something. I found out that it is an isomer of ethoxyethane? Glad I Hellped! :)
*February 24, 2009*

**intro chemistry**

I think CH3OCH2CH2CH3 is some kind of chemicle found in rubbing alchole or something. I found out that it is an isomer of ethoxyethane. Glad I Hellped! :)
*February 24, 2009*

**social studies please help**

No problem Glad To Help!! ;)
*February 24, 2009*

**social studies please help**

The British invented it. Verified Source of Origin.... "The game of Rounders has been played in England since Tudor Times, with the earliest reference being in 1744 in "A Little Pretty Pocketbook" where it is called Baseball. It is a striking and fielding team ...
*February 24, 2009*

**Thanks for Help!**

Thanks,you did help, but the multiple choice answers are as y decreases, x increases etc. I know about the positive coorelation and stuff, i just need to know what happens WHEN you have a positive coorelation. Thanks for your help!
*February 24, 2009*

**Algebra**

If a scotter plot of y versus x has a positive coorelation, then?
*February 24, 2009*

**6th grade**

your welcome to! :)
*February 24, 2009*

**6th grade**

Well 1st you do 100-87 which is 13. so so far you have 1 and 13/87. You have to check if 13/87 is in simplist form. Come back if you dont know how to put something in simplest form! Glad to help :)
*February 24, 2009*

**Algebra**

What point is one-fourth the distance from A to B along segment ABfor A(-5,3) and B(7,-5)? Thanks :)
*February 24, 2009*

**Math**

lets say you want to change 21/9 into a mixed number. 1st find out how many times the denominator (the bottom number of the fraction) will go into the numerator (the top number of the fraction) without going over, which is 2 times (18). So how much do you have left over? 21-18...
*February 24, 2009*

**Algebra**

To calculate the charge for a load of bricks, including delivery, they use this equation c = 0.42b + 25 where c is the charge per load and b is the number of bricks. What is the delivery charge per load. They dont give you the number of bricks so ?
*February 24, 2009*

**Math**

Thanks zoey, i shoudve seen that. If you meant in ounces then zoey's the way to go! :)
*February 24, 2009*

**Math**

you do 1.5 divided by 3 and you get .5 or a half
*February 24, 2009*

**algebra**

for what value of k does kx + 7y = 10 have a slope of 3? im really confussed!!!
*February 24, 2009*

**Algebra**

Find an equation of the line parallel to the graph of 4x + 2y = 8 and containing (-1,5)
*February 24, 2009*

**Math+graphing Log**

Logarithms are the inverse of exponents. The base here is three and whatever to the right of the equals sign is the raised up exponent. You have the power to find coordinate point values by merely switching the input and output columns of this T-chart that you are mentioning. ...
*February 23, 2009*

**Cuutural Diversity**

Please keep in mind that the majority of the world's population of one billion Muslims are not Arabs. Indonesia has the most inhabitants that adhere to Islam.
*February 20, 2009*

**Chemistry**

I had to convert 95.4 km/hr to m/sec. Would this be the correct series of proportions? 95.4 km x .62m/1km x .60m/1hr x 60 sec/1 minute I then got 212932.8. If this is not correct, then what is the correct way? Thank you so much.
*February 19, 2009*

**Chemistry**

I converted 789,032 calories to Kilo Joules, and I got 3,301,309,888. I feel like this number is way to big. I set up the proportion like this: 789,032 x 4.184J/1c x 1000 kj/1J. Was this incorrect?
*February 19, 2009*

**Chem**

I have to convert inches to 250 cm.My book states the expression to calculate this as 250 cm x 1in/2.54 cm. I followed through to divide, and got 98.425, which following the rules of significantdigits, would equal 98, right? 250 only has 2 sig digs, it'd have to be 98. But...
*February 19, 2009*

**Chemistry**

I am supposed to add up these numbers, using the significant digits rules. 150 76.9 209 .036 I got 435.936. Following the sig. digs. rules, it would be 435.9, right? How does this then equal 440 as my science books says? Thank you so much.
*February 19, 2009*

**chem.**

hi the unknown liquid is colorless, has a slight odor, is soluble, and flammable. What might it be? my teacher wants us to find out just from these qualities. thanks for your help
*February 18, 2009*

**misc;culture**

M.C.: For example, have you heard that Dr. Seuss (whose real name was Theodore Giesel) wrote Yertle the Turtle as an allegory for Hitler's rise and fall?! One turtle kept trying to build himself up to greater heights on the backs of the other turtles until one turtle at ...
*February 18, 2009*

**U.S.History**

On a follow up note to this, where does one draw the line between politics, society, and economics?! Aren't they all culturally intertwined in some way?!
*February 18, 2009*

**Math (PLEASE HELP!!)**

See below for more examples that I have worked out for you.
*February 18, 2009*

**Math (PLEASE HELP!!)**

There are three hundred and sixty degrees (360) in a circle and sixty (60) minutes are in an hour. Either looking at a clock/watch or sketching out the hands on paper might be of use to you. The hour hand is the shorter hand and the minute hand is the longer hand. 1. You are ...
*February 18, 2009*

**Western Civilization**

Something like one-third of the population of the European continent was wiped out by bubonic plague. It is now thought to have been trasmitted by fleas that bit rats and then somehow got transfered to Mongolian horsemen. As an interesting sidebar, the song "Ring Around ...
*February 17, 2009*

**english root word**

Isn't that spelled facto, not factum?!
*February 17, 2009*

**Quick Spanish**

Do you have brownish or brunette hair? How are your friends? (notice the conjugated verb son comes from the infinitive verb ser)
*February 15, 2009*

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