Friday

October 28, 2016
Total # Posts: 1,562

**Calculus**

Two bacteria colonies are cultivated. The first colony has a doubling time of 2 hours and the second a doubling time of 3 hours. initially, the first colony contains 1,000 bacteria and the second colony 3,000 bacteria. At what time t will sizes of the colonies be equal? Is ...

*December 6, 2009*

**chemistry.**

When 41.81 of a solution of aqueous sliver ions with a concentration of 0.2040 mol dm3 is added to a solution of XO-3/4 ions, 1.172g of the precipitate is formed? ..Can any one help me with that! NB: -3/4 mean that 3 is up and 4 is under it.

*December 3, 2009*

**calc**

a) Suppose f(x) is defined on 0 ≤x≤1 by the following rule: f(x) is the first digit in the decimal expansion for x. For example, f(1/2) = 5 and f(0.719) = 7. Sketch the graph of y = f(x) on the unit interval with appropriate scales for x and for y. Use a graphical ...

*December 1, 2009*

**calc**

a) Suppose f(x) is defined on 0 ≤x≤1 by the following rule: f(x) is the first digit in the decimal expansion for x. For example, f(1/2) = 5 and f(0.719) = 7. Sketch the graph of y = f(x) on the unit interval with appropriate scales for x and for y. Use a graphical ...

*November 30, 2009*

**Math**

How tall is a cylinder that has a volume o 2,123 cubic meters and a radius of 13 meters?

*November 19, 2009*

**Statistics**

h t t p : / / t i n y u r l . c o m / y f z j y u o I'm not sure how to do #2.

*November 19, 2009*

**Math**

Everyone in Mrs.Bowman's art class has 8 jars of paint except Jerome, who has 10. There are 74 jars of paint in the room. How many students are there in Mrs. Bowman's art class.

*November 17, 2009*

**math**

For fall festival, Mrs. Marco bought 6 bags of Golden Delicious apples. She handed out 43 apples and had 5 left over. How many apples were in each bag.

*November 17, 2009*

**Physics-Astronomy**

A high-velocity star HVS 1 is moving at 600 km/s, 0.2% speed of light. Assuming the HVS 1 is moving away from us, and that its velocity is oriented entirely along our line of sight, determine the Doppler shift of the Ha spectral line (6562.8 Angstrom) produced by this star. Is...

*November 16, 2009*

**Physics-Astronomy**

Hello, I have no idea how to do the following question. Any help would be appreciated: An energy of at least 13.6 electron-volts is required to ionise a hydrogen atom. What is the longest wavelength of electromagnetic wave capable of ionising hydrogen? And which regions of the...

*November 16, 2009*

**Readind and writing number**

I am 55 yr old can get help

*November 12, 2009*

**world history**

my book does not talk about that can you help me with some websites that might help me

*November 11, 2009*

**world history**

thank you :D and what did both countries offer each other

*November 11, 2009*

**world history**

middle ages

*November 11, 2009*

**world history**

how did cultural diffusion occur between Europe and Asia?

*November 11, 2009*

**physics**

2. A rifle is fired horizontally and travels 980 m. The rifle barrel is 6.1 m from the ground. What speed must the bullet have been travelling at? here i got a time of 201.24.. i then added the 980m to the 6.1m and put it in the x=vt equation to get a velocity of 69.49

*November 9, 2009*

**Math**

I need help with this problem. In decimal form, write the ratio of the first 8 consecutive square numbers. 1 squared:2 squared, 2 squared:3squared, 3 squared:4 squared

*November 5, 2009*

**chemistry.**

2.02g of KNO3 ( Mz=101) is dissolved in sufficient water to prepare 0,500 dm3 of solution. What is the concentration of this solution in mol dm?

*November 5, 2009*

**chemistry.**

So what do we have to do in this case?

*November 5, 2009*

**chemistry.**

Which solution contains 0,1 mol of sodium hydroxide? A- 1 cm3 of 0,1 mol dm3 NaOH B 10 cm3 of 0,1 mol dm3 NaOH C 100 cm3################### d 100 cm3 ###################

*November 5, 2009*

**Grammar**

I'd appreciate if you would help with the other questions. Thank you.

*November 4, 2009*

**Grammar**

what is the adjective and adverb in the following sentences? The plane circled the vacant field and slowly came in for a smooth landing. You should not drive too fast; however, a slow driiver can be dangerous too. Mira has been faithfully practicing the cello lately. Luisa ...

*November 4, 2009*

**English **

You have some good ideas however, there are quite a few mistakes. Always build on your topic sentence. Also, be certain to always use your Spell Check. You might want to keep a dictioary handy when writing. Make certain your sentences are a complete thought. Try not to be too ...

*November 4, 2009*

**possessive nouns**

______ stories seemed unbelievable A. Survivors B. Survivor's C. Survivors' D. Surviors's

*November 2, 2009*

**possessive nouns**

Worry haunted the refugee ____ eyes A.childrens B.children's C. childrens'

*November 2, 2009*

**possessive nouns**

Money might be sewn into ____ coat linings. What is the answer A. women's C. Womens'

*November 2, 2009*

**5th grade**

Thats what I had but was not for sure. Thanks!

*November 2, 2009*

**5th grade**

Eight states border one or more of the five Great Lakes. Write a fraction representing the part of the 50 states that border a Great Lake. Write the fraction in simplest form.

*November 2, 2009*

**English A1 Poem**

Can any one help to analysis it.

*October 27, 2009*

**English A1 Poem**

All afternoon my brothers and I have worked in the orchard, Digging this hole, laying you into it, carefully packing the soil. Rain blackened the horizon, but cold winds kept it over the Pacific, And the sky above us stayed the dull gray Of an old year coming to an end. In ...

*October 27, 2009*

**6th grade**

how do you draw a diagram to find the solution to 2.6 devided by 0.4 ,and explain what the quotant means?

*October 25, 2009*

**Calculus**

maximum and minimum of y = cos(x) + sin (x)on the interval [0,2pi]

*October 25, 2009*

**Exponential Decay**

the half-life of carbon-11 is 20 minutes. How long will it btake for 600g of carbon-11 to decay to 30g?

*October 22, 2009*

**The secret of gumbo grove**

oh...im sorry then but thank you for attempting.

*October 20, 2009*

**The secret of gumbo grove**

do you know where i can find chapter summaries for this book.

*October 20, 2009*

**Math**

6/15= 2/5 divide 6 and 15 by 3 15/60=1/4 divide 15 and 60 by 15 78=78 (whole number)

*October 19, 2009*

**Maths**

im not sure im typing as i find them. A=total of counting the numbers 11,22,33,44,55,66,77,88,99,101,202,303 B) = total counting the numbers 11,22,33,44,55,66,77,88,99,101,202,303,404,505,606,707,808,909

*October 19, 2009*

**Maths**

what is a?

*October 19, 2009*

**Grammar**

yes you capitalize it

*October 19, 2009*

**Family Report**

What should i put in a report about my family?

*October 19, 2009*

**guess and check**

there are 42 question on lindas test. sum of the questions are 2 point and sum were 3 points. she got a perfect score. how many 2 question where there and 3 point questions were on lindas test

*October 19, 2009*

**algebra1**

the speed of train A is 8mph slower than the speed of train B. Train A travels 220 in the same time it takes train B to travel 260 miles. Find the speed for each train.

*October 18, 2009*

**6th grade (vocabulary)**

gather

*October 18, 2009*

**summarizing book**

can you summarize the summaries at this link? sparknotes website Search: A wrinkle in time

*October 15, 2009*

**3rd grade**

198+864=1062

*October 14, 2009*

**Math**

I don't think that is right answer is x=4 not sure how

*October 14, 2009*

**Math**

Solve. log(x^3)-log(2)=log(2x^2)

*October 14, 2009*

**math grade 12**

Solve. log(x^3)-log(2)=log(2x^2)

*October 14, 2009*

**arithmetic**

0.031

*October 14, 2009*

**3rd grade math**

write each addition vertically.decide which new groups you will make.then,add to see if you were correct. 256+1273___________ a new ten?____________ a new hundred?_________ a new thousand?____________ need answers and please explain

*October 12, 2009*

**3rd grade**

write addition vertically.decide which new groups you will make.then add to see if you are correct. 256+1273_________ a new ten?________ a new hundred?___________ a new thousand?_________ i need answer and explain how

*October 12, 2009*

**chem**

When 13 grams of a sample cools from 56c to 34.4cit loses 25.8 Joules of heat. What is the specific heat of the sample?

*October 11, 2009*

**physics**

I actually don't know where the 2s and 3m came from, I think it was a typo on my MSWord

*October 10, 2009*

**physics**

A motorist travels at a constant speed of 34.0 m/s through a school zone; exceeding the posted speed limit. A policeman, waits 7.0 s before giving chase at an acceleration of 3.9 m/s2. (a) Find the time required to catch the car, from the instant the car passes the policeman. ...

*October 10, 2009*

**CALCULUS! PLEASE HELP URGENT!**

I think it does. For answer choice one correct?

*October 8, 2009*

**CALCULUS! PLEASE HELP URGENT!**

I think all three of them have derivatives because when I put them into the calculator, I saw no discontinuities. but i am debating if it's II and III.

*October 8, 2009*

**CALCULUS! PLEASE HELP URGENT!**

Which of the following functions have a derivative at x=0? I. y= absolute value(x^3-3x^2) II y= square root(x^2+.01)- absolute value (x-1) III y= e^x/cosx

*October 8, 2009*

**health**

Strategies to improve patient intake

*October 5, 2009*

**Algebra**

translate to an inequality. a number is at least 10. the answer is ? ? ? use x as the variable. Thank you

*September 30, 2009*

**Chemistry**

what is the balanced equation? how do i convert moles of CH4 and Cl2 to moles of the product??

*September 29, 2009*

**CALCULUS**

Wow.... Reiny is a dick, but a helpful dick.

*September 26, 2009*

**algebra**

what numbers factor 25x^2 - 10x + 126

*September 24, 2009*

**9th grade, Biology honors**

That it is like diffusion but with water.

*September 23, 2009*

**Spelling/Literature**

Can you put streamline in a sentence with this definition:a teardrop line of contour offering the least possible resistance to a current of air, water, etc.

*September 14, 2009*

**Poetry**

Thank you!

*September 13, 2009*

**Poetry**

Algebra is useful math. Lots of people enjoy it. Getting the hang of it is pretty hard. Everyone learns it sometime or another, But some are brave enough to show it off. Rapid fire algebraic equations are given to solve All but half the class get them right. does this make sense

*September 13, 2009*

**Poetry**

I need to write a poem with the word ALGEBRA but the only problem is that my teacher wants complete sentences with each letter instead of a word for a letter. Can you please help?

*September 13, 2009*

**Math**

How many 8 by 12 shelves can u get from a 36 by 56 piece of plywood

*September 10, 2009*

**4th grade math**

Identify one way outside of schoo in which you have seen #'s ordered.

*September 9, 2009*

**math**

The sum of my ones and tens digit is 10. My tens digit is greater than my ones digit. I am a prime number. What number am I?

*September 8, 2009*

**Biochemistry**

Explain in detail whether or not a single amino acid could be an effective antigen and how a single amino acid substitution could affect ligand binding?

*September 4, 2009*

**Reading: Summary**

This article is about a man named Dan Phillips who builds low income, but yet attractive housing out of salvaged items. He builds his houses in Huntsville, Texas. He is currently still building houses and he started in Huntsville, Texas. Dan Phillips uses materials such as ...

*September 3, 2009*

**Reading: Summary**

I used some of your suggestions and came up with this. This article is about a man named Dan Phillips who builds low income, but yet attractive housing out of salvaged items. He builds his houses in Huntsville, Texas. He is currently still building houses and he started in ...

*September 3, 2009*

**Reading: Summary**

Should I explain some of his customer reviews or describe the way he builds the houss or would that be redundant?

*September 3, 2009*

**Reading: Summary**

This article is about a man named Dan Phillips that builds low income, but yet attractive housing out of salvaged items. He builds his houses in Huntsville, Texas. He is currently still building houses and he started in Huntsville, Texas. Phillips started building houses to ...

*September 3, 2009*

**Reading: Summary**

Thanks i'll try that strategy

*September 3, 2009*

**Reading: Summary**

Can you help me summarize this article in 2 paragraphs? Ny times website ome mans trash please can you search it and help?

*September 3, 2009*

**biochemstry**

Look at biochem testbook. "Acetal CoA is a cental character in the cellular metabolism... [through which] all the energy sources (fats, proteins, and carbohydrates) are interconvertible". Acetyl CoA is the correct answer.

*September 1, 2009*

**java programming**

could someone help me create a source code that requires you to enter 2 numbers then gets the sum, difference, product and quotient of them after entering

*July 7, 2009*

**Economics**

Which of the following items contribute(s) to an increase in real GDP? (i) The cost of cleanup after a hurricane hits Florida (ii) The market value of burglar alarms purchased to reduce crime (iii) The additional health care costs associated with smoking (iv) The production of...

*June 30, 2009*

**physics**

a table exerts a 2.0 -newton force on a book lying on the table. how much force is exerted by the book on the table?

*June 18, 2009*

**managerial economics**

Price 1 is 50, price 2 is 38.78. Quantity 1 is 100, quantity 2 is 169. solve the price elasticity of demand. what if our goal is to decrease price by 14% what if our goal is to raise quantity from 169 to 300 by how much percentage we should decrease price? -2=%Q/P

*June 16, 2009*

**economics**

aztec enterprises depends heavily on advertising to sell its products. management at aztec is allowed to spend $2million monthly on advertising, but no more than this amount. each month, aztec spends exactly $2million on advertising. what is aztec's elasticity of demand ...

*June 15, 2009*

**english/poetry**

yfgqwdufgweufg

*June 8, 2009*

**5th grade Science**

Why does a multicellular organism need specialized cells and why their apperances are different?

*June 6, 2009*

**Radioactivity**

helium nuclei? positron/electron? photon? im not too shure.

*June 2, 2009*

**calculus 2**

f(x) = { 2 if x ! [0, 1) −1 if x = 1 3 if x ! (1, 2] −5 if x ! (2, 3) 20 if x = 3 } Prove that the function is Riemann integrable over [0, 4] and calculate its Riemann integral over [0, 4].

*May 27, 2009*

**financial management**

Callaghan Motors' bonds have 25 years remaining to maturity. Interest is paid annually, they have a $1,000 par value, the coupon interest rate is 12%, and the yield to maturity is 5%. What is the bond's current market price? Round your answer to the nearest cent.

*May 27, 2009*

**Math, easy Q**

Sorry, really messed up the wording

*May 10, 2009*

**Math, easy Q**

Does /-- ( Radical 7/10 ) = / 7 /-- ( Radical 70 over / - \/ 70 10 ) \ / 10 __ 10

*May 10, 2009*

**help please**

calculate A, B in this equation: 1000 A B sigma ai =( sigma ai) - (sigma ai) i=60 i=60 i=2

*May 6, 2009*

**spanish**

they asked you at what age she got married= caso

*May 6, 2009*

**calc 2**

Calculate A, B in the following equation: 1000 A B Ó ai = Ó ai - Ó ai I=60 i=2 i=2

*May 6, 2009*

**codes and ciphers**

i am trying to find the code example on the page:C=E D=G I=S K=C V=L Y=F

*April 26, 2009*

**codes and ciphers**

what is the type of cipher or code used on edhelper work sheets?

*April 26, 2009*

**science**

oh okay thank you

*April 25, 2009*

**science**

Stars by Cindy Grigg

*April 25, 2009*

**science**

but i don't have the complete story to finish it!

*April 25, 2009*

**science**

does anybody have an edhelper account i can use for my home work?

*April 25, 2009*