Saturday

January 31, 2015

January 31, 2015

Total # Posts: 3,238

**Math**

Two fire towers are 30 kilometers apart, tower A being due west of tower B. A fire is spotted from the towers, and the bearings from A and B are E 14 degrees N and W 34 degrees N, respectively. Find the distance d of the fire from the line segment AB.
*May 10, 2011*

**Calculus**

integral 5e^t-(sin(t))dt I figured this out as the answer 5e^t+cos(t). My question is if I need to put a +C at the end of the equation. Thanks for your time.
*May 10, 2011*

**math**

just did this in my homework... break even quantity F/(s-c) Revenue s(f/(s-c))
*May 7, 2011*

**calculus**

What is the indefinite integral of 6/(x ln(2x)??
*May 6, 2011*

**stats**

A particular college basketball player is a 80% free throw shooter. In a game, he took 20 free throws. Find the probability he made 18 or more of his free throws.
*May 5, 2011*

**Algebra**

Thank you for your help.
*May 5, 2011*

**Algebra**

Im having a hard time figuring out this problem: Use the function, y=-(x+1)^2 +2, to answer the following parts. The increasing interval and decreasing interval To find both I believe that: increasing : x < -1 decreasing : x > 1 So is this on solution below Increasing ...
*May 5, 2011*

**physics**

If 1200 cal of heat are added to 50 g of water initially at a temperature of 15 oC, what is the final temperature of the water?
*May 4, 2011*

**account/check please**

The two accounts used to adjust the uncollectible accounts are. A) Uncollectible Accounts Expense and Allowance for Uncollectible Accounts. B) Accounts Receivable and Uncollectible Accounts Expense. C)Accounts Receivable and Allowance for Uncollectible Accounts D)Accounts ...
*May 4, 2011*

**account/check please**

The two accounts used to adjust the uncollectible accounts are. A) Uncollectible Accounts Expense and Allowance for Uncollectible Accounts. B) Accounts Receivable and Uncollectible Accounts Expense. C)Accounts Receivable and Allowance for Uncollectible Accounts D)Accounts ...
*May 4, 2011*

**algebra**

Im having a hard time figuring out this problem: Use the function, y=-(x+1)^2 +2, to answer the following parts. Find the y-intercept y=-(0+1)^2 +2 y=-(1)^2 +2 y=-1+2 y=1 is my answer Find the x-intercept 0=-(x+1)^2 +2 0=-((x^2)+(1^2))+2 0=-x^2 - 1 + 2 sq.rt(x^2)= sq.rt(1) x=1...
*May 4, 2011*

**Special Education**

ok forgot that part.... i think I got it,.... thanks for your help
*May 4, 2011*

**Special Education**

Given at least 3 blocks of contrasting colors from the table and guiding 1 hand to hold the block, Shimon will be able to pick up the the block with one hand, 4/5 trials.at about. WHat about the above? Wow this is confusing....
*May 4, 2011*

**Special Education**

Yes so I think the part where Shimon is picking up th biggest block with one hand should be corrected.... do u have any idea how I could possibly change that..
*May 4, 2011*

**Special Education**

Given at least 3 blocks of contrasting colors from the table and guiding 1 hand to hold the block and the other to pick up the block, Shimon will be able to pick up the biggest block with one hand, 4/5 trials. There is something wrong with the above behavioral objective. Do ...
*May 4, 2011*

**accounting**

The two accounts used to adjust the uncollectible accounts are. A) Uncollectible Accounts Expense and Allowance for Uncollectible Accounts. B) Accounts Receivable and Uncollectible Accounts Expense. C)Accounts Receivable and Allowance for Uncollectible Accounts D)Accounts ...
*May 4, 2011*

**Algebra**

Is the vertex (-1,2) Increasing interval (-2,1) Decreasing interval(1,-2) Do the x-intercept =1?
*May 4, 2011*

**Algebra**

Im having a hard time figuring out this problem: Use the function, y=-(x+1)^2 +2, to answer the following parts. Find the y-intercept y=-(0+1)^2 +2 y=-(1)^2 +2 y=-1+2 y=1 is my answer Find the x-intercept 0=-(x+1)^2 +2 0=-((x^2)+(1^2))+2 0=-x^2 - 1 + 2 sq.rt(x^2)= sq.rt(1) x=1...
*May 4, 2011*

**accounting/help please**

The two accounts used to adjust the uncollectible accounts are. A) Uncollectible Accounts Expense and Allowance for Uncollectible Accounts. B) Accounts Receivable and Uncollectible Accounts Expense. C)Accounts Receivable and Allowance for Uncollectible Accounts . D)Accounts ...
*May 3, 2011*

**English I**

Is this a persuasive topic for an essay: Does television today brainwash children and teens? Yes or No? How? My english teacher says he gets it but it needs to be more persuasive and specific. How do I that? Can you give me some examples? Please and thank you.
*May 3, 2011*

**calculus**

The graph of f'(x) is shown for 0=< x =<10. The areas of the regions between the graph of f' and the x-axis are 20, 6, and 4, respectively. I'm going to describe the graph of f' since I can't post pictures. The first section of the graph goes up (like...
*May 2, 2011*

**physics**

a particle drops from the height 500m with the initial velocity at rest, and it goes into the water. a particle has a mass of 1kg. draw graphs a-t, v-t, and s-t until 10 second after it hits the water. consider the air and water resistance is measured as F air=.005v^2 N and F ...
*May 2, 2011*

**math**

Select a variable (mean or proportion) to determine if there is a difference in the two groups. Samples must be independent. Select a sample of data values (20 to 50) for each group. Then address the following (and a little more) in your project. a. Write a brief statement of ...
*April 30, 2011*

**geometry/help**

Find the area of a regular heptagon with the side 7 cm. answer 178.1 cm² can you check
*April 27, 2011*

**Calculus 2**

Write in cartesian form: r=3tan(theta)sec(theta) im working with this function here, trying to get an rcos(theta) and/or rsin(theta) so far, i am stumped. what i have so far: r^2=3r(tan(theta)sec(theta)) (x^2+y^2)=?????
*April 27, 2011*

**english/help please**

I have a project in Brave new world. I have to make a flag that represent the society .Can you give ideas or symbols to represent the different aspects of their society and what color to use too. please and thank you very much.
*April 27, 2011*

**French**

avec sa soeur et ses parents
*April 27, 2011*

**algebra**

SUBSTITUTE THE VALUE IN THE PARENTHESES FOR X - 3 TIMES FOR 5, 50 AND 120
*April 26, 2011*

**chemistry**

calculate the percent composition of the compound that forms when 222.6 g nitrogen combines completely with 77.4g oxygen.
*April 26, 2011*

**Physics**

A student standing on the ground throws a ball straight up. The ball leaves the student's hand with a speed of 13m/s when the hand is 2.3m above the ground, how long does it stay in the air?
*April 26, 2011*

**Algebra 2**

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to x from the first equation is substituted into the second equation. x – 2y = 2 x + 3y = 17
*April 25, 2011*

**calculus**

can not figure out problem. (the area of the region in the first quadrant between the graph of y=x sqrt (4-x^2) and the axis is ? a(2/3)sqrt2 b 8/3 c 2sqrt2 d 2sqrt3 e 16/3
*April 21, 2011*

**chem**

A 75.0 mL volume of 0.200 M NH3 (Kb=1.8x10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 28.0 mL of HNO3.
*April 20, 2011*

**chem**

A 75.0 mL volume of 0.200 M NH3 (Kb=1.8x10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 28.0 mL of HNO3.
*April 20, 2011*

**Economics**

In long-run equilibrium there will be no economic profit in a purely competitive static economy because: 1- barriers to entry will prevent profit from arising. 2-there will be no uncertainty, no innovations, and no monopoly. 3- there will be no need for professional managers ...
*April 19, 2011*

**Economics**

how did u find it
*April 19, 2011*

**Economics**

thanks
*April 19, 2011*

**Economics**

Suppose you deposit $5,000 in a bank which pays 10 percent interest compounded twice a year. The actual annual interest rate you receive is: a- 10 b-11 c-10.25 d-12
*April 19, 2011*

**Math**

People make mistakes. Calm down. A=P(1+r)^t A= interest P= principle interest r= interest rate t= time in years If $4500 invested at 7% interest compounded annually yeilds $15600, for how many years was the money invested?
*April 19, 2011*

**Math**

A=P(1+r)^2 A= interest P= principle interest r= interest rate t= time in years If $4500 invested at 7% interest compounded annually yeilds $15600, for how many years was the money invested?
*April 19, 2011*

**Math**

if u can give me an example if i select on how many people did not have college degree
*April 18, 2011*

**Math**

Select a variable (mean or proportion) of interest to you and collect or find the data. BEFORE you collect the data, decide what a likely mean or proportion might be. Then address the following (and a little more) in your project. a. Write a brief statement of the purpose of ...
*April 18, 2011*

**Chemistry**

The lethal inhalation dose of sarin for a 200lb person has been determined to be 0.0015 mg. Determine the LD50 of sarin that researchers used to calculate this lethal inhalation dose.
*April 18, 2011*

**differential equations**

Search: A 8 kg mass is attached to a spring hanging from the ceiling and allowed to come to rest. assume that the spring constant is 40 n/ m and a damping constant is 3 N/m. At t=0 and external force of 2 sin(2t+PI/4)N is applied to the system. determine amp, frequency and ...
*April 18, 2011*

**Health**

I still dont know what it is. One the sites. It just says Anabolic Steroids but isnt there a catagory its under?
*April 16, 2011*

**Health**

What is the Drug Classification of Anabolic Steroids?
*April 16, 2011*

**MATH**

Additional help throughout the 36 weeks.Thanks!
*April 15, 2011*

**MATH**

A Science instrutor assigns his student one second of home work..the first week of school,two seconds. the second week four seconds, the third.if the student asked whether he would agree to this weekly homework doubling for the duration of the 36-week school year.how much ...
*April 15, 2011*

**MATH**

A Science instrutor assigns his student one second of home work..the first week of school,two seconds. the second week four seconds, the third.if the student asked whether he would agree to this weekly homework doubling for the duration of the 36-week school year.how much ...
*April 15, 2011*

**math**

Gene has less 12 nickels,dimes,&quarters in his pocket.The probabilty of pulling out a nickel or quarter is 3/4.pulling out a dime is 1/4.How many coins does gene have in his pocket?.how many of each coin does he have?Please explain how you got the answerit will help me alot ...
*April 14, 2011*

**Math**

you deposit $1000 at 3% per year.what is the balance at the end of one year,and what is the annual yield,if the interest.Please help solve the problem. Simple interest? Compounded annually? Compounded quarterly Compounded daily
*April 14, 2011*

**Math**

Please help solve the below question.I made a mistake on my first post.Show work please! On Dec 28,2007,you could buy a 10-year U.S.Treasury note(a kind of bond)for $10,000 that pays 4.21% simple interet every year through Dec 28,2017.How much total interest would it earn by ...
*April 14, 2011*

**Math**

Thank you very much for your help!
*April 14, 2011*

**Math**

This one is qt different..i need more help..Thanks!
*April 14, 2011*

**Math**

you deposit $1000 at 3% per year.what is the balance at the end of one year,and what is the annual yield,if the interest.Please help solve the problem. Simple interest? Compounded annually? Compounded quarterly Compounded daily
*April 14, 2011*

**chemistry**

How much Fe3O4 is produced when 50g of Fe is reacted with exess water vapor
*April 13, 2011*

**An Overview of Teaching Techniques**

I'm having trouble with this one. What type of teaching uses formal lectures? Student-centered Teacher-redirecting Teacher-centered Outdated styles. I'm thinking Teacher-centered I'm I right.
*April 12, 2011*

**maths**

Are you sure you typed this correctly? It doesn't make sense for them to give you the diameter and ask about the level falling. Should 140 cm be the height?
*April 12, 2011*

**algebra**

Height is related to the two bases and area A=.5h(b1 + b2) so A /(b1 + b2) = .5h so 2A/(b1 + b2) = h
*April 11, 2011*

**math**

Length = 2 widths + 6 24 = 2w + 6 18 = 2w 9 = w
*April 11, 2011*

**math**

15/x = 3/2 therefore 2 times 15 = 3 times x 30 = 3x 10 = x 24/x = 3/2 therefore 2 times 24 = 3 times x 48 = 3x 16 = x 27/x = 3/2 same as above x = 18 the other sides are 10, 16, and 18
*April 11, 2011*

**Chemistry**

Thank you so much! I am still very shaky on this, but I understand a lot better!
*April 11, 2011*

**Chemistry**

If a researcher needs 0.50 L of 3.0 M nitrite buffer at pH 3.00, then she knows that the concentration of nitrous acid (conjugate acid) plus the concentration of nitrite anion (conjugate base) must equal 3.0 M. She must then calculate the amount of each that is necessary to ...
*April 11, 2011*

**math**

x is what he earned on Saturday 2x is what he earned on Sunday x/2 is what he earned on Friday x + 2x + x/2 = 70 3.5 x = 70 x=70/3.5 x = 20 $20 on Saturday $40 on Sunday $10 on Friday
*April 11, 2011*

**Calculus**

π∫(e^x)^2 dx evaluated from -1 to 1 this is the disk method and u substitution(u = 2x) =.5π∫e^u du =.5πe^2x evaluated at 1 and -1 =.5(e^2-e^-2)π =3.626π cubic units about 11.39 cubic units
*April 11, 2011*

**Chemistry**

Given that the Ka of benzoic acid is 6.50 x 10-5, how would one prepare 0.500 L of a benzoic acid/sodium benzoate buffer of a desired pH of 4.00? The starting concentration of the benzoic acid is 3.00 M and the molecular weight of sodium benzoate is 144.10 g/mol
*April 10, 2011*

**physics**

Two 5.0 g spheres are suspended from a long thread and seperated by a distance of 140mm. The spheres repel after being charged to +86nC. Find the angle
*April 10, 2011*

**physics - URGENT**

Two blocks are connected by a heavy uniform rope with a mass of 4.00 . The topblock is 6.00kg, the bottom block is 5.00kg with an applied upwardforce of 200 N. What is the tension at the midpoint of the rope?
*April 10, 2011*

**Chemistry**

Given that the Ka of benzoic acid is 6.50 x 10-5, how would one prepare 0.500 L of a benzoic acid/sodium benzoate buffer of a desired pH of 4.00? The starting concentration of the benzoic acid is 3.00 M and the molecular weight of sodium benzoate is 144.10 g/mol
*April 10, 2011*

**math**

The top speed of a cheetah is 71 miles per hour. Which of the following answers seems most reasonable for the distance a cheetah would cover in 25 minutes at this speed?
*April 10, 2011*

**English**

I need you to check these sentences for me on Prospero and Caliban. I'm not sure about the tense choice (can you say that)? 1) Caliban hopes that they both Prospero and Miranda get drenched with a dew as evil as the kind his mother used to collect with a raven’s ...
*April 10, 2011*

**English**

I just hav a sentence. Thank you He had been married for two years when his wife decided to apply for a divorce (filed for divorce)/decided to break up their relationship. How can you express this?
*April 9, 2011*

**English**

Can you please check these sentences, please? Thank you very much! 1) She told me that it was the second time since she hadn't been to the cinema. 2) She asked me how long I had been waiting for her. I think you should try to convince his parents that Bill is a trustworthy...
*April 8, 2011*

**English**

I need you to check these sentences for m, please? 1) What's the weather going to be like in Rome tomorrow? 2) It's going to be windy, sunny, foggy,overcast, frosty, rainy,cloudy, misty. stormy. 3) There is going to be thunder and lightning (or they are going to be ...
*April 8, 2011*

**5th grade Math**

First, you want to make both nubers a fraction, so rewrite this as : 5/1 * 3/4 Then, multiply straight across on the top, which is 5 * 3, or 15 Then, multiply straight across on the bottom, which is 1 * 4, or 4. Your answer is 15/4, but you need to make this a simplified mixed...
*April 7, 2011*

**English**

I forgot to include the following sentences. Thank you 1) Alonso is desperate because he thinks his son had drowned (or is drowned?). 2) Ariel informs Prospero aboutthe plan to kill him. 3) Dr Jekyll believed that man is (or was) a mixture of good and evil. He created a drug ...
*April 7, 2011*

**English**

Thank you very much. I need to wrie instructions of an MP3 player, a video recorder and a CD-player. Could you help me? I included a few more sentences. 1) I must be silent during teachers' explanations. I hang the clothes in the sun so that they get dried sooner (?? or ...
*April 7, 2011*

**English**

Can you please check these sentences for me, please? It's urgent. 1) What do you think about going to the cinema? How about meeting at school? 2) How do I arrive at the school? I put the clothes back in the wardrobe. I put (is "take") the rubbish out once a day. ...
*April 7, 2011*

**Advanced accounting**

Hanna Company borrows $80,000 on July 1 from the bank by signing a $80,000, 10%, one-year note payable. Correct. Prepare the journal entry to record the proceeds of the note. Date Account/Description Debit Credit July 1 Incorrect. Prepare the journal entry to record accrued ...
*April 7, 2011*

**English**

I really need you to check these sentences on Owen's poem please. 1)In the second stanza, most of the soldiers succeed in putting on their clumsy gas masks. Someone, however, is still crying out for help, unable to move quickly and easily enough to put on his mask, as if ...
*April 6, 2011*

**English**

I forgot to add the following sentences. I really hope you can have a look at them. She assured/informed me that the money had been paid. 1) She promised me that the money would be paid. She confirmed/explained/thought/reported/added that the money had been paid. 2) She ...
*April 6, 2011*

**English**

Can you please check the following sentences, please. It's really urgent. 1) Following what Joyce had already done in England and Proust in France, and what, in some way, Sterne had attempted as early as two centuries before, Virginia Woolf therefore abandoned the ...
*April 6, 2011*

**English**

Can you please tell me why "The hotel lies at a short distance from the beach" is wrong? Here are some more words I'd like you to check with reference to fashion. 1) wedge-heeled shoes, Parà-rubber shoes, trousers with patches on both sides, jeans with ...
*April 6, 2011*

**English**

I forgot to ask you to check these sentences . Thank you for your help. 1)I forgot to add the following sentences. 2)I like sunbathing on the beach. I didn't go on the rides because I'm afraid of heights. 3)I'm looking for a hotel with air-conditioning, heated ...
*April 5, 2011*

**English**

1) Last June she drove with her older brother from their house in Oregon to her brother's new apartment in North Carolina. 2) She realized only afterwards that she should have listened to her mum's advice. 3) The trip really changed my life since it showed me that ...
*April 5, 2011*

**English**

I still have a few doubts on school rules. I hope you can have a look at them. It's urgent. 1)You mustn't dirnk or eat during lessons/school hours. 2) You mustn't ask questions when your teacher explains/is explaining/during explanations. 3) You must take notes if ...
*April 5, 2011*

**chemistry honors**

Assuming standard pressure, at what temperature is there an equilibrium between water vapor and liquid water?
*April 5, 2011*

**Describe how you would make 250 mL of 0.500 M HCI**

The individual who put "Versace" is an answer is the pinnacle of comedic ability and should be lauded as such!
*April 4, 2011*

**English**

Thank you very much. I hope you can have a look at these few sentences too. 1)*Interior monologue is often confused with the stream of consciousness, although they are quite different. 2)Actually, the former is the verbal expression of a psychic phenomenon, while the latter is...
*April 4, 2011*

**English**

I still have a few doubts on the use of the present after "as if" and on other statements. Thank you for your cooperation. 1) They are hobbling along on their bloody feet, as if they are (why not were?) hurt or blind. They are so tired, they walk ask if they are (why...
*April 4, 2011*

**English**

I still have a few parts I'm unsure of. I really hope you can help me. It's urgent, especially the last paragraph n.7 1)In the second stanza, the soldiers succeed in putting on their clumsy gas masks. Someone, however, is still crying out for help, unable to move ...
*April 4, 2011*

**English**

I really need to have a look at the first stanza of Owen's poem as I'm unsure of tense choice. Thank you. 1) In the first stanza the soldiers are retreating towards their trenches. Instead of being youthful, strong fighters, they are presented as prematurely old and ...
*April 4, 2011*

**Algebra**

Sorry Iposted that previous question wrong. Here is the right question. What is the remainder when the sum of the first 102 counting numbers is divided by 5250.
*April 4, 2011*

**algebra**

What is th remainder when the sum of the first 102 counting numbers is divided by 5220?
*April 4, 2011*

**English**

I left out two sentences. Thank you. 1) I take the clothes out (and not: I take out the clothes?) 2) You mustn't speak during the lessons/during lessons/during your school hours/during your school classes. 3) You must be in class when the teacher arrives. I have to ...
*April 3, 2011*

**English**

I have two more questions on the same theme. Thank you. 1)Pay attention to (not at) your teachers' explanations. 2)You must put up your hand, if you want to ask a question to your teacher/your teacher a question . Are they both possible? 3) You mustn's shout at your ...
*April 3, 2011*

**English**

I left out the following sentences. Thank you for your help. It's urgent 1) I must always bring all my books and exercise books to school (class?) I must do (my) homework every day. 2) How can I get to the school (or to school?) from here? Do you know how I can get to the ...
*April 3, 2011*

**English**

I forgot to add the following sentences. Thank you very much. 1) In the evening I always have to prepare (?) my schoolbag.I must put up my hand if I want to speak (??) I mustn't eat or drink during school hours (also: lessons?) 2) I mustn't interrupt my (the?) teachers...
*April 3, 2011*

**English**

Can you please check these sentences? It's really urgent. 1) At school I mustn't cheat during a test (also tests?). 2)When I do the washing-up, I have to put the dishes into the dishwasher, then put the washing-up gel (powder) into the dishwasher, start it and wait for...
*April 3, 2011*

**English**

Thank you very much. Can you help me rephrase the last few lines, please? "Obscene as cancer, bitter as the cud Of vile, incurable sores on innocent tongues,-- My friend, you would not tell with such high zest To children ardent for some desperate glory, The old Lie: ...
*April 3, 2011*

Pages: <<Prev | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | **12** | 13 | 14 | 15 | 16 | 17 | 18 | Next>>