Sunday

September 21, 2014

September 21, 2014

Total # Posts: 1,220

**sum fun (math)**

find a quick and easy method to compute the sum of the first 100 counting numbers (no calculators allowed)
*January 27, 2010*

**6th grade math**

what is the reciprocal of 7/4????????????? how do you find the reciprocal of 7/4?????
*January 26, 2010*

**Statistics**

The Roper Organization conducted identical surveys in 1990 and 2000. One question asked women was, “Are most men basically kind, gentle, and thoughtful?” The 1990 survey revealed that, of the 3,000 women surveyed, 2,010 said that they were. In 2000, 1,530 of the 3,...
*January 26, 2010*

**chemistry**

how many grams of HNO3 can be produced if 225 grams of NO2 is mixed with 55.2 g of H2O? 3NO2 + H2O=2HNO3 + NO
*January 24, 2010*

**11th grade**

I need help on how to factor a polynomial by grouping
*January 18, 2010*

**calculus**

Evaluate the indefinite integral: ((4/x^5)+(4/7x))dx
*December 13, 2009*

**calculus**

Evaluate the indefinite integral: (8e^x)dx
*December 13, 2009*

**Math-Statistics**

Suppose you want to test the claim that mean is not equal 3.5. Given a sample size of n = 45 and a level of significance of a = 0.10, when should you reject H0 ? A) Reject H0 if the standardized test statistic is greater than 1.96 or less than -1.96 B) Reject H0 if the ...
*December 12, 2009*

**Problem Solving-Division**

How can you check an answer of a quotient with a remainder? Use quotient, dividend, and divisor in your answer.
*December 10, 2009*

**World* Geography**

Thank you!
*November 24, 2009*

**Wolrd Geography**

Imagine this situation: Country A invades and conquers Country B. The resulting acculturation has negative effects. Country B's economy undergoes a dramatic change when the new government replaces capitalism with another form of economy. What are the most likely results of...
*November 24, 2009*

**French**

Complétez avec l’article défini ou indéfini qui convient. 1. Vous aimez __ou__ cinéma ? 2. Vous avez l’appartement ? 3. Vous connaissez __les__ enfants de Michel ? 4. Je voudrais __le__ morceau de pain. 5. Vous lisez ____ journaux ? 6. Il ...
*November 23, 2009*

**MATH**

what's the equation tho?
*November 23, 2009*

**organic Chemistry**

In my Organic chemistry lab, the calculated enantiomeric excess was over 100% . Is this possible? and If not, what sort of error could have been made? *the observed optical rotation was read correctly
*November 23, 2009*

**Math**

Bert is 11 kilometers away from Brenda. Both begin to walk toward each other at the same time. Bert walks at 4 kilometers per hour. They will meet in 2 hours. How fast is Brenda walking?
*November 21, 2009*

**Algebra**

1. n^3/n^5 2. (2b)^3(b^-4) 3. (mn)^2 ∙ n^4 4. 3a^5 ∙ 5a^-2 ∙ a^3 5. (x^3/xy^4) ∙ (y/x)^5 6. (a^-1)(b^2)/ab ∙ (a^2)(b^3)/b^-2
*November 18, 2009*

**reading**

Who wrote this poem where a boy couldn't write a poem but instead he ended up writing one with all his excuses?
*November 16, 2009*

**Math**

What are the odds against getting all heads or all tails in three successive flips of a coin? I say it is 3:1, is this right?
*November 15, 2009*

**logarithms**

how do i solve: log4x^3 + log2x^1/2 = 8 please help me
*November 8, 2009*

**5th grade math**

there r 2 girls n one girl has $.60 more then the other and together they total $8.20. so u set up an equation 2x+.60=$8.20. u first subtract 60 cent from both sides n that leave u with 2x=$7.60. now u divide both sides by 2 to get how much each girl has n x= $3.80. n finally ...
*November 5, 2009*

**calculas**

Consider the function f(x)x^4 -32x^2 +2, -3 < or = to x < or = to 9. This function has an absolute minimum value equal to ? and an absolute maximum value equal to ?
*November 5, 2009*

**calculus**

The linear approximation at x=0 to f(x)= sqrt (7+6x) is y=
*November 5, 2009*

**calculas**

The function f(x)= (8x-7)e^2x has one critical number. Find it
*November 5, 2009*

**calculus**

If f(x)=x^3. Yhe equation of the tangent line to f(x) at x=4 is y=? Using this, we find our approximation for 3.8^3 is ?
*November 5, 2009*

**math115**

u first distribute the -5 to the 3x n negative 4. so u get 6-15x+20=-49. u then combine 6 and 20 to get 26. so u get 26-15x=-49 then u subtra t 26 from buth sides and get: -15x=-75. then u divide -15 from both sides n x =5. hope this helped!!
*November 5, 2009*

**Science,Ecology**

What do iterlocking food chains make up?
*November 2, 2009*

**Math**

Solve the quadratic equation below. Show your work and check -4x^2 = 0
*November 2, 2009*

**Chemistry**

Which of the following is most likely to LOSE electrons when forming an ion? a. F b. P c. S d. Rh e. Se
*November 1, 2009*

**Science**

A biologist is studying the epithelial cells in a variety of plants and animals. She counts the chromosomes in the epithelial cells of several organisms and finds the following numbers: Organism A: 32 chromosomes Organism B: 26 chromosomes Organism C: 24 chromosomes Organism D...
*November 1, 2009*

**calculus**

Use implicit differentiation to find the slope of the tangent line to the curve (y/x+8y)=x^8 +9 at the point (1,10/-79).
*October 29, 2009*

**math**

Find an algebraic model for the sum of a number and its reciprocal. I have come up with y=x+ (1/x), although I was wondering if it would be correct to write it as y=x^2+1/x I am supposed to graph this, but when i graph both I get different graphs on my graphing calculator. ...
*October 28, 2009*

**Business**

Tont has just come into a significant inheritance and decides to invest in stock in a solid, stable company. Which financial ratio is the most helpful in determining where he invests? a. Liquidity ratio b. Profitability ratio c. Leverage ratio d. Activity ratio
*October 27, 2009*

**Business**

What type of accountant would collect information on a firm's transaction and use the information to prepare financial statements that companies use in decision making? a. Public accountant b. Management accountant c. Not-for-profit accountant d. Government accountant
*October 27, 2009*

**Business**

Which one reflects the financial position of a company at any given time? a. equity b. statement of cash flows c. balance sheet d. profit and loss statement
*October 27, 2009*

**Business**

The debts of a business are considered a. liabilities b. assets c. equity d. securities
*October 27, 2009*

**Business**

Which of the following is true concerning the preparation of financial statements? a. The cost of goods sold is added to sales b.The cost of goods sold is deducted from sales c. The tax and interest are deducted before income profit is reported d. The gross profit is found by ...
*October 27, 2009*

**Business**

Which one provide the necessary information to determine the liquidity of a company? a. Government agency b. Stockholders c. Contract negotiations d. Financial statements
*October 27, 2009*

**Business**

Accounting transactions from source documents are recorded in a a. ledger b. cash flow statement c. journal d. profit and loss statement
*October 27, 2009*

**Business**

Need help with Penn Foster exams number 50084300 and 50084400. Can somebody help me?
*October 27, 2009*

**5th grad math cubic units**

Thank you. So then: let's say you're looking at a 3 dimentional block of units: 4 blocks in length, 2 blocks with and 3 blocks high. The volume would be 24, what would the cubic units be? Wouldn't it be the same?
*October 26, 2009*

**5th grad math**

Let's say you're looking at a 3 dimentional block of units: 4 blocks in length, 2 blocks with and 3 blocks high. The volume would be 24, what would the cubic units be? Wouldn't it be the same?
*October 26, 2009*

**5th grad math**

what is the difference between cubic unit and volume? I know that volume is length X width X height but wouldn't the cubic units come out to the same answer?
*October 26, 2009*

**Math**

What is the measure of the dent angle for a star-shaped polygon with 8 points and a point angle of 20°?
*October 25, 2009*

**Math**

Determine if the given regular figures form semiregular tessellations. Triangle, decagon, 15-gon? Yes or No
*October 25, 2009*

**Math**

Which figure if any, is topologically equivalent to a sponge? Pencil, Pipe, or Trophy and Why?
*October 25, 2009*

**Math**

When two balanced dice are rolled, 36 equally likely outcomes are possible. What are the odds of getting a 5 or 6?
*October 14, 2009*

**math**

The sum of my digits is the same as the product of my digits who am I?
*October 13, 2009*

**math**

The product of my digits is 10. I'm an even number who am I?
*October 13, 2009*

**math**

My digits are the same. Their sum is 3 less than their products. Who am I?
*October 13, 2009*

**Math**

To find the length of the longer leg of a 30°–60°–90° triangle, multiply the length of the shorter leg by _______. To find the length of the shorter leg of a 30°– 60°– 90° triangle, multiply the length of the longer leg by _______.
*October 13, 2009*

**Physics**

A 5 N force directed to the west acts on an object for 2.0 seconds. What is the change in momentum of the oject? Would it be 5 X 2?
*October 11, 2009*

**Chemistry**

What is the mass of 7.817 × 1023 atoms Ag?
*October 11, 2009*

**Math**

Two dice are rolled. Find the odds that the score on the dice is either 10 or at most 5
*October 11, 2009*

**Math**

A basketball player with a free throw shooting percentage of 60% gets fouled and goes to the line to shoot two free throws. What are the odds in favor of her making her first shot?
*October 11, 2009*

**Physics**

he weight of an astronaut on the moon is 127 N, where the value of 'g' is only 1.7 m/s2. What would the weight of this astronaut be on the Earth (in N)? I dont know if my attempt is rite? 127n/1.5ms^2 74.70N Divide 74.70N with earth value of G. What is the earths value...
*October 8, 2009*

**8th grade**

Can you help me solve this equation. 6n-(-2n)+8
*October 5, 2009*

**physics**

Four 6.0 spheres are located at the corners of square of side 0.7m. calculate the magnitude and the direction of the total force exerted on one sphere by the other three.
*October 4, 2009*

**Physics**

I not sure if this can be answered =-(
*October 2, 2009*

**Physics**

The Russell Traction System To immobilize a fractured femur (the thigh bone), doctors often utilize the Russell traction system illustrated in the figure. Notice that one force is applied directly to the knee, F_1,while two other forces, F_2 and F_3 are applied to the foot. ...
*October 2, 2009*

**chemistry**

How many valence electrons are there in BrF3?
*October 1, 2009*

**chemistry**

and wouldn't the last one remain unchanged since it was at the end of the experiment and wouldn't affect it?
*October 1, 2009*

**chemistry**

I know, and i'm sorry. I am having a lot of trouble with these ones. I thought for the second one. it would cause a higher molarity since the pH was lower, but i'm still not sure
*October 1, 2009*

**chemistry**

So i had trouble finding the answers to these questions on a lab: Background: If we were using a burret/flask instead of a pipette and well plates. Before you started, the buret must be rinsed with 1 ml of distilled water and then 1 ml of NaOH solution. The flask would also be...
*October 1, 2009*

**Algebra 2**

What is the slope of a line perpendicular to y=2/3x-7? What is the slope of a line parallel to y=2/3x-7?
*September 23, 2009*

**math**

yes it is right
*September 20, 2009*

**psychology**

Present a situation in which you acted or reacted ‘mindlessly’ (see web links below), rather than thoughtfully, and which did not turn out well for you. Using the critical thinking concepts discussed in Chapter 1 and concepts of Chapter 8 and/or from the internet, ...
*September 16, 2009*

**grammar**

I have an example of a sentence I need help with: "I am passionately in love with someone who does not know I exist." I think 'I, and who' are pronouns. I think 'am, love' are adjectives. I think 'in and with' are prepositions. I think '...
*September 15, 2009*

**psychology**

describe neurotransmitters in terms of what they are, their general function within the body, and their impact on behavior. discuss the connection between neurons and neurotransmitters. pick two neurotransmitters and discuss their general functions in our bodies. also discuss ...
*September 12, 2009*

**7th grade math**

try a calculator
*September 10, 2009*

**Geometry **

ok thank you u r a lifesaver
*September 10, 2009*

**Geometry **

(3.14)(4.2)=13.188 would I round that to 13.19?
*September 10, 2009*

**Geometry **

No wonder I kept getting a weird answer thank you for clarifying for me...
*September 10, 2009*

**Geometry **

Find the circumference of a circle whose diameter is 2xR=4.2 ft. Use Pi = 3.14, and round the result to the nearest tenth. would this be 3.14*2*4.2ft?
*September 10, 2009*

**Geometry **

would this be 3.14 x 2 x 4.2ft?
*September 10, 2009*

**Geometry **

Find the circumference of a circle whose diameter is 2xR=4.2 ft. Use Pi = 3.14, and round the result to the nearest tenth.
*September 10, 2009*

**Math**

Problem Solving question - place value and exponents. Are 10o and 2o equal? Why or Why not
*September 10, 2009*

**Physics**

A Canadian goose flew 845 km from Southern California to Oregon with an average speed of 28.0 m/s. How long, in hours, did it take the goose to make his journey?
*September 10, 2009*

**literature**

thanks!
*September 3, 2009*

**literature**

well for the first one i thought that maybe burden saw it raw and featurless because he wasn't expecting anything when he moved to nebraska and everything was so different from the city life. but antonia became such a big part of her life that he started admiring the ...
*September 3, 2009*

**literature**

i've already read those sites but mostly i dont understand what the questions mean
*September 3, 2009*

**literature**

Just as My Àntonia’s setting is initially raw and featureless, its narrative at first seems haphazard: “I didn’t arrange or rearrange. I simply wrote down what of herself and myself and other people’s, Antonia’s name recalls to me. I suppose it ...
*September 3, 2009*

**american literature**

In My Antona, what does Jim lose in the process of growing up? Does Antonia lose it as well? At first I thought his youth and innocence but then it didn't seem right.
*September 2, 2009*

**american literature**

thanks for the site but it doesnt really help much. some of them just repeat the question
*September 1, 2009*

**american literature**

When Jim arrives in Nebraska, he sees “nothing but land: not a country at all, but the material out of which countries are made.” Yet at the novel’s end the landscape is differentiated. It has direction and color – red grass, blue sky, dun-shaded bluffs. We...
*September 1, 2009*

**literature**

we read my sister's keeper and one of the questions from our study guide talks about Campbell's dog, Judge in what ways do dogs introduce ideas about loyalty and instincts?
*August 23, 2009*

**business statistics**

A researcher has observed independent samples of females and males, recording how long each person took to complete his or her shopping at a local mall. The respective times, in minutes, are listed in the following table,Using the 0.025 level of significance in a one-tail test...
*August 8, 2009*

**business statistics**

what null and alternative hypotheses would be appropriate for the one-way ANOVA to examine the data? Given the following data, what conclusion would be reached at the 0.05 level of significance? From the F distribution tables, what is the approximate p-valeu for this test? ...
*August 8, 2009*

**geometry**

what is the surface area of a sphere if the radius, r, is 6 meters
*July 31, 2009*

**Compensation**

I'm having a problem can't locate answer for this question: THIS CAUSE COMPENSATION SURVEY DATA TO BECOME ABSOLETE FAIRLY QUICKLY. a) the lag time between when the data was collected and used b) pay compression c) chane in the unemplment rate d) changes in the ...
*June 16, 2009*

**Compensation**

I 'm having a hard time finding answer for this question: can you please help?? In Compesation Surveys how are relevant labor markets defined : a) employment numbers, occupational classification, geography b) occupational classification, market competition, employemnt ...
*June 16, 2009*

**AED200**

AED 200 Multicultural Education Scenario The steps needed for a Multicultural Education in my classroom I must build a lesson plan around topics and concepts that should be taught and not activities. Choose activities that will explore my topics and concepts. Every student in ...
*May 24, 2009*

**AED200**

With what is stated here in my question how would you think the paper should be written. I did it as an outline because it stated to outline the steps required for a effective education. this is what I wrote do you feel I wrote it the wrong way? AED 200 Multicultural Education...
*May 24, 2009*

**AED200**

Read the following scenario: You are a second-grade teacher at Happy Valley Elementary School. You are teaching language arts and social studies. Your classroom of 21 students consists of 7 white students, 5 Latino students, 4 African American students, 3 Native American ...
*May 24, 2009*

**humanities**

what effect do religious pluralism and interfaith movement will have on the future of organized religion
*April 23, 2009*

**Social Studies for 7th grade**

who was king first julius ceasar orromulous & remus
*April 17, 2009*

**IPC**

Explain whether the photons emitted by a bright light bulb are more energetic than those emitted by a dim light bulb of the same color. how does the color of the light bulb determine the amount of energy of the electromagnetic waves?
*April 15, 2009*

**9th grade**

Explain what is meant by the "dual nature" of light
*April 15, 2009*

**elementary algebra**

4x^2-45x+50=0
*April 15, 2009*

**Biology- Human Karyotyping**

Could someone help me find 2 disorders that are the result of non-disjunction. I already have down syndrome, klinefelter syndrome, Turners Syndrome, Super Males, Triple X syndrome, Edward's syndrome and Patau's syndrome. Thanks in Advance
*April 12, 2009*

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