Wednesday

October 1, 2014

October 1, 2014

Total # Posts: 1,603

**math, solving roots**

4x²-25=0
*February 21, 2009*

**Word Problem**

So then the answer would be x > 15? Thanks!
*February 18, 2009*

**Word Problem**

Photography reprints cost $0.52 each at a local photo shop. Through the mail, they cost $0.44 each plus $1.20 postage and handling. How many reprints must a customer purchase to make it less expensive to use mail order? Thanks!
*February 18, 2009*

**Algebra**

Are you a math teacher by any chance?
*February 18, 2009*

**Algebra**

Would (2,1) (3,5) (4,9) work to make this true? 4x - y = 7? X representing the first number in the pair, and y the second? Thanks!
*February 18, 2009*

**Algebra**

I need 3 ordered pairs of points that would be solutions to this equation I have an idea of what suppose to fit because I think this equation has infinate solutions. What do you all think. Thank you! 4x - y = 7
*February 18, 2009*

**Alegebra**

For a science project, Tyronce is misxing a solution that is 6 parts of sugar to 25 parts of water. How would you wirte this as a decimal
*February 17, 2009*

**math**

can two different sqaures have the same perimeter
*February 16, 2009*

**Chemistry**

At the point of freezing when the temprature has plateaued and there is an equilibrium between the liquid and solid phases which phase, solid or liquid contains the greater amount of energy? In short, when the temperature of both the liquid and the solid are the same which ...
*February 16, 2009*

**Chemistry**

When the solid and liquid phases are in equilibrium, which phase, solid or liquid, contains the most amount of energy (kenetic energy is the same)? Also, what is the difference between the melting and freezing of a substance?
*February 16, 2009*

**Economics**

Why are the multiplier and MPS inversely related? If net exports increase, is this a leakage or an injection?
*February 7, 2009*

**Chem Help**

35 C
*January 31, 2009*

**social studies**

who was moses austin?
*January 29, 2009*

**math**

write a word problem involving the number of pages in a book. then write the numerical expression that you would need to use to solve your problem.
*January 26, 2009*

**calculus**

A question on my math homework that I can't seem to solve... Rotate the region bounded by y=x^2-3x and the x-axis about the line x=4. Set up the integral to find the volume of the solid. I'm pretty sure that the integral is in terms of (dy), and has bounds of 0-4. ...
*January 24, 2009*

**social studies**

what roles did women play in medieval times?
*January 22, 2009*

**physics**

Astonomers discover a new planet orbiting a fixed point in space, but for reasons unknown, they can't directly observe a star where one is expected. The radius of the orbit is measured to be 1.85 x 10^8 km, and the lone planet completes an orbit once every 530 days. a.) ...
*December 16, 2008*

**physics**

Assuming Earth behaves as a perfect sphere with a radius of 6380 km, the standard gravitational acceleration,g, at sea level has a value of 9.80 m/s^2. a.) As Earth rotates on its axis, objects at the equator experience a slightly different value of g due to additional ...
*December 16, 2008*

**physics**

The mean distance of the planet Neptune from the Sun is 30.05 times the mean distance of Earth from the Sun. a.) Determine how many Earth-years it takes Neptune to orbit the Sun. b.) The mass of teh Sun is 1.99 x 10^30 kg, and the closest distance of Neptune from the Sun is 4....
*December 16, 2008*

**physics**

The moon is receding from the Earth by approximately 3.8 cm per year. Earth's mass is 5.98 x 10^24 kg, and its radius is 6.38 x 10^6 m. The Moon's mass is 7.3 x 10^22 kg, its radius is 1.79 x 10^6 m, and its orbital period around Earth is 27.3 days. The current average...
*December 16, 2008*

**science**

What are at least three attributes that distinguish a mold from a fungus?
*December 12, 2008*

**Physics**

i know this is alot to ask for but these 10 i can nott get out of the 30 A man pulls a 10-kg box across a smooth floor with a force of 71 newtons at an angle of 23 degrees and for a distance of 97 meters. How much work, to the nearest joule, does he do...
*December 10, 2008*

**Physics**

A man pulls a 10-kg box across a smooth floor with a force of 71 newtons at an angle of 23 degrees and for a distance of 97 meters. How much work, to the nearest joule, does he do?
*December 10, 2008*

**algebra**

{x|X is a natural number less than 1}
*December 10, 2008*

**USHistory**

I dont understand the Kentucky VA resolutions were madiosn and jefferson in accordance with e.a??
*December 9, 2008*

**USHistory**

I dont understand the Kentucky VA resolutions were madiosn and jefferson in accordance with e.a??
*December 9, 2008*

**history**

The Division of Buddhism: Theravada and Mahayana Buddhism Buddhism, the religion was born in India in the sixth century, with wide spread over a large part of Asia and many parts of the world. After the death of the Buddha, the Buddhist communities of their own have been met ...
*December 5, 2008*

**Math**

Ed's distance to the mirror is 12ft The distance from the lighthouse to the mirror is 100ft. The distance of Ed's eyes to the ground is 5ft. What is the scale factor and how tall is the lighthouse?
*December 3, 2008*

**11th grade**

why did the religons of buddhism and christianity spread when and as it did in africa during 300 bce?
*December 2, 2008*

**MATH**

WHAT MULTIPLICATION FACT CAN BE FOUND BY USING THE ARRAYS FOR 2X9 AND 5X9?
*November 24, 2008*

**Calculus**

the function of f(x) = x + sin (x) on the interval [0,b] i have to find b. two values of c that are given are (4.6658, 1.6174) that satisfy the mean value theorem on [0,b] i got b as +/- 3.29 but it has to be an integer so i think that's wrong. ' can someone please ...
*November 23, 2008*

**drown**

3b+2=6(3-b)
*November 19, 2008*

**calculus adn geometry**

Wait, why are you substituting what b equals into the original equation... How does that even help you in the first place?
*November 18, 2008*

**Science**

I need information on daphnia please
*November 13, 2008*

**3rd grade**

Yes, because multiplication needs to have equal groups. Cheer!
*November 12, 2008*

**history**

How did the civil rights movement change in the mid-1960’s
*November 10, 2008*

**History**

Why did relations between the United States and the USSR deteriorate after WWII?
*November 10, 2008*

**HISTORY**

Why did Truman decide to use the atomic bomb against Japan?
*November 10, 2008*

**math**

Thank you for your help. I have one question. How did you get .75 from t+1?
*October 31, 2008*

**math**

In the xy-plane, line l passes through the origin and is perpendicular to the line 4x+y=k, where k is a constant. If the two lines intersect at the point (t,t+1), what is the value of t? I tried drawing a picture of the problem described above, but I don't understand what...
*October 31, 2008*

**Calculus**

position function is x(t)=(t-1)^3 (2t-3) how do you find the velocity of the particle at nay time when t is greater or equal to 0? i got the derivative equation (6t-9)(t-1)^2 + 2(t-1)^3 but that is for all t.
*October 28, 2008*

**Calculus (Answer Check)**

A particle moves along the x-axis so that its velocity at time t, 0(less than or equal)t(greater or equal to)5 is given by v(t)=3(t-1)(t-3). at time t=2 the position of the particle is x(2)=0. 1. find the minimum acceleration of the particle 2. find the total distance traveled...
*October 27, 2008*

**Calculus (Answer Check)**

A particle moves along the x-axis so that its velocity at time t, 0(less than or equal)t(greater or equal to)5 is given by v(t)=3(t-1)(t-3). at time t=2 the position of the particle is x(2)=0. 1. find the minimum acceleration of the particle 2. find the total distance ...
*October 27, 2008*

**Calculus (Answer Check)**

Are my answers right? If they are wrong you dont have to tell me how to do it its okay =) A particle starts at time t=0 and moves along the x-axis so that its position at any time t(greater or equal to) 0 is given by x(t)=(t-1)^3 (2t-3) 1.find the velocity of the particle at ...
*October 27, 2008*

**math**

a man is building a studio that has a circular base. the interior of studio has a diameter of 40 feet. what is the area of the floor space?
*October 26, 2008*

**5th grade social studies**

Forest,rivers,mountains,and oceans because they grow vegetables and drink water
*October 23, 2008*

**5th grade social studeis**

What types of geographical features helped settlements grow and succed.why?
*October 23, 2008*

**math**

skip counting on the hundred chart the question is What patterns do you see with skip counts by 10's and 3's?
*October 22, 2008*

**8th grade**

Speculate about how the invention of the microscope might have helped doctors to understand what caused diseases?
*October 21, 2008*

**physics**

A boxcar of mass 200 tons at rest becomes uncoupled on a 2.5 degree grade. If the track is considered to be frictionless, what speed does the boxcar have after 10 seconds?
*October 20, 2008*

**english**

One of the two passages below follows the old-new contract. Identify it. I think it is passage one can anyone help verify if I am correct 1. The old/new contract is another principle for writing clear closed-form prose. Beginning your sentences with something old – ...
*October 19, 2008*

**english**

What is the topic sentence I think it is sentence 3 please let me know if you think it is as well Voice mail is usually part of your firm’s phone system. It is a way to digitally record messages, and it allows “random access” so you can skip, delete, save, and ...
*October 19, 2008*

**enviromental science**

what are three ocean resource problems
*October 19, 2008*

**physics**

how much time does it take for a student running t an average speed or 5.00m/s to cover a distance of 2.00km?
*October 17, 2008*

**6th grade**

what is an organism and how do i do a report on how to explain one
*October 14, 2008*

**math**

trying to figure it out so I can help my 5th grade son figure it out. No textbooks to help parents
*October 6, 2008*

**math**

Make up a set of at least 12 numbers that have the following landmarks. Maximum: 8 Range: 6 Mode: 6 Median: 5
*October 6, 2008*

**Calculus**

Using the derivative definition of f ‘ (x) = (f (x+h) – f (x)) / (h) find the derivatives of the following… 1. f(x) = (2x-1) / (x+2) 2. f(x) = sqrt (3x-1) 3. f(x) = 3x^4 my answers were: 1. –x+3 2. (3) / [2(sqrt(3x-1))] 3. 12x^3 are my answers right?
*October 4, 2008*

**english**

When I want to say in a sentence: The word unprecedented means..... does unprecedented have to be in italics, quotes, or is it fine the way it is?
*October 1, 2008*

**chemistry/math**

If aluminum has a density of 2.78 g/ml, how much space would 32 grams occupy?
*September 29, 2008*

**biology**

Would two nucleotides be sufficient to provide enough codons to code for all 20 amino acids and why? how many amino acids could be coded for by codons containing only two nucleotides? Will three nucleotides per codon work and why or why not?
*September 29, 2008*

**British Literature, **

I don't see how those examples fit the deffenition of satan being a round character either. It doesnt show that hes changed.. I mean the story is all around more indepth about him but those quotes to show that.
*September 28, 2008*

**pre calculus**

NAdia has 7 more nickels than dean has dimes. If dean gives nadia 4 of his dimes, then dean will have the same value of money as nadia. how much money do they have together (nadia only has nickels and dean only has dimes) ned has nickels, dick has dimes, and quincy has ...
*September 28, 2008*

**math**

If Mark types 79 words per minute, and he types for 44 minutes, it looks like this: 79 words per minute x 44 minutes = 3476 words in 44 minutes. (Which is the answer)
*September 25, 2008*

**4th grade English**

If you write: "Gorillas are shy, so most of them never fight", it makes sense. They're shy, therefore they don't fight. If you write: "Gorillas are shy, but most of them never fight", it implies that being shy would make them more likely to fight. ...
*September 25, 2008*

**math**

If Summer grades 25 papers in 30 minutes, and there are 4 half-hours in two hours, multiply 25x4= 100. Summer can grade 100 math papers in 2 hours. Larry can grade 22 papers in 20 minutes. 60 minutes (one hour) is three times twenty minutes, so two hours is six (doubling the ...
*September 25, 2008*

**Chemistry**

That sounds about right. K is more unstable, and reacts more readily.
*September 24, 2008*

**dictionary**

noun
*September 24, 2008*

**Calc 1 - Factoring??**

Solve the inequality. Express the solution sets as intervals or unions of intervals and show them on the real line. Use the result (square-root of a^2) = |a| as appropriate. (x+3)^2 < 2
*September 24, 2008*

**College Sophmore**

x=The Width of the Grand Canyon 381 m = x/76 This simplifies to 381 meters multiplied by 76 = 28956 meters wide.
*September 24, 2008*

**arithmetic**

1+2+3+4+5+6=21 So the number is 123456.
*September 22, 2008*

**spell**

Is the following words nouns/pronouns or verbs. They're you've weren't needn't there'd they've mustn't what'll doesn't hadn't
*September 22, 2008*

**gemotry**

Eduardo owned 6/7 of a family business. He sold 1/5 of the business to his son. wat portion of the business does he still own
*September 21, 2008*

**geog- still**

sorry to be a pain but it still doesn`t answer the question . my homework is a wordsearch and i only have clues its to do with diversity in the uk. the only 2 i can`t find is sikh temples and muslim mosques i can`t find anything in the wordsearch that matches . im so stuck ive...
*September 20, 2008*

**geog- still**

sorry to be a pain but it still doesn`t answer the question . my homework is a wordsearch and i only have clues its to do with diversity in the uk. the only 2 i can`t find is sikh temples and muslim mosques i can`t find anything in the wordsearch that matches . im so stuck ive...
*September 20, 2008*

**geography year 8**

my homework is diversity in the uk . i have a wordsearch and need to find people who have come to britain. 1/ gaelic dance - i think its jig or irish 2/ synagogues - jewish 3/ churches constructed after conquest in 1066 - Normans 4/ chop suey from a soho restaurant - chinese 5...
*September 20, 2008*

**math**

1. give an example of an absolute value inequality whose solution set is the empty set 2. explain why \x+2\ is greater than or = to -4 has all real numbers as its solution set. please help
*September 16, 2008*

**math**

can you please help me?
*September 16, 2008*

**math**

1. give an example of an absolute value inequality whose solution set is the empty set 2. explain why \x+2\ is greater than or = to -4 has all real numbers as its solution set.
*September 16, 2008*

**ecology**

thank you soooo much!!!
*September 14, 2008*

**ecology**

Why are 2nd order consumers more likely to be affected by a toxin than 1st order concumers?
*September 14, 2008*

**human services**

compare and contrast program planning and program evaluations in human service agency's.
*September 14, 2008*

**Statistics**

Hello I need help solving a statistics problem and have no idea where to start. Can anyone help? In a recent national survey, the mean weekly allowance for a nine-year-old child from his or her parents was reported to be $3.65. A random sample of 45 nine-year-olds in ...
*September 11, 2008*

**social studies**

I need a defination for "Direct Democracy"
*September 10, 2008*

**Art**

What is the type of artist that used Rhythm the most?
*September 8, 2008*

**english**

i have to write a ballad. The 1st and 3rd lines need to be in iambic tetrameter and 2nd and 4th in iambic trimeter. is this right? Today I told my friend about The dream I had one night. “This red rose grew alone In a small lot without sunlight.”
*September 4, 2008*

**12th grade government/economics**

should the u.s move to an electonic currency and remove paper currency
*August 24, 2008*

**Poetry**

If this be error and upon me proved, I never writ, nor no man ever loved. These lines are an example of a/an
*August 21, 2008*

**maths**

Would y=2 be the equation for the line that has the co-ordinates (0, 2) and is parallel to the x-axis? im not exactly sure, please help and explain?
*August 19, 2008*

**catering**

it's a contract isn't it?
*August 18, 2008*

**Calculus**

for f(x) = 2+x : Domain: (negative infinity to -3] Range: (-infinity to -1] f(x) = x^2 : Domain: (-3,-1) Range: (9,1) f(x) = 6 : Domain: [-3,-1] Range: [6] i don't know how to put them all together though. is this right?
*August 13, 2008*

**Calculus**

The following information is given, f(x) = 2+x x<(less than or equal to) -3 f(x) = x^2 x > -3 , x < 1 f(x) = 6 1 < (less than or equal to) x I graphed it, but i don't know how to find the domain and range.
*August 13, 2008*

**science need info please**

what I need to do
*July 25, 2008*

**Law and Ethics**

I see alot of you arewith Penn Foster, as well as myself. I have struggled as well on some of these questions. Just be careful on the answers you choose, make sure you do search other websites and resources. I have been told some answers are not correct and a friend of mine ...
*July 20, 2008*

**History**

why did African Americans in the South lose many of their civil rights until 1950s and 1960s? please help me
*July 8, 2008*

**Biology**

Find an angiosperm that has modified leaves, stems, roots or flowers that do not function in a normal manner? Example: Claifornia Barrel Cactus has spines in place of leaves to reduce water loss.
*July 7, 2008*

**critical thinking**

When you encounter the word "since" in a sentence you should generally conclude that it is acting as which of the following
*July 6, 2008*

**health**

what population or groups were most adversely affected by deinstitutionlazion?
*June 29, 2008*

**maths**

how do i make p the subject of the formula q=5/3+p
*June 20, 2008*

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