Saturday

April 18, 2015

April 18, 2015

Total # Posts: 1,730

**Algebra**

I do not understand how you arrived @ this answer. Can you please explain. Thank you
*April 2, 2009*

**Algebra**

Simplify (5x^-2)-(3y^-1) --------------- (x^-1)+(y^-1)
*April 2, 2009*

**geometry**

A ladder leaning against a vertical wall makes a angle of 75degree with the ground. If the foot of the ladder is 4 feet from the base of the wall, would this ladder be long enough for you to retrieve the suction dart that your friend stuck 17ft up the wall?
*April 2, 2009*

**Algebra**

Please help Simplify (p^-4+m ^2m)^-4/(p^-4)^-m
*April 1, 2009*

**math**

When converting Farrenheit to Celcius, why is there only 32degrees difference between the freezing points of 32 and 0, but 110 degrees difference between the boiling points of 210 and 75 degrees?
*April 1, 2009*

**chemistry**

Why does a solute dissolve faster in hot water than cold?
*March 29, 2009*

**Algebra**

Thank you!
*March 29, 2009*

**Algebra**

Add The following (8n^6 - 6n - 5n^4) + (2n^4 + 2n^6 + 3n) I think that this is the answer but am not sure. 10n^6 - 3n^4 - 3n
*March 29, 2009*

**Algebra**

Wouldn't the + 3n at the end be - 3n?
*March 29, 2009*

**Algebra**

Add. (8n6 - 6n - 5n4) + (2n4 + 2n6 + 3n) I think I have this answer but am not sure if its 10n^6 - 3n^4 - 3n OR 10n - 3n^6 - 3n^4 I am pretty confident on the first answer. Any help is appreciated! Thanks!
*March 29, 2009*

**Englsih**

The word it has how is the correct version written when you are contracting it?
*March 28, 2009*

**science**

can anyone help me unscramble....heat likes to remain "onmfriu"
*March 24, 2009*

**Chemistry**

What is meant by the hyrdration of the hydrogen ion? Does this mean you add water? Does this mean you create hydronium ions? Are hydronium ions only created when you hydrate a concentrated acid?
*March 22, 2009*

**Chemistry**

If you mixed water and dilute sulfuric acid, rather than concentrated sulfuric acid, would the exothermic reaction be greater or less than the exothermic reaction that occurs during hydration of a concentrated sulfuric acid? If so, why?
*March 22, 2009*

**Calculus II**

Solve the Initial Value Problem: Let k and Po be positive constants. P(0)=Po dP/dt = kP^2
*March 17, 2009*

**algebra 2**

how do you solve 1/3 + 4/x=2
*March 16, 2009*

**Algebra**

Algebra - Substitution Question? A+B+C=1 A+C= -1/2 A-B+C= -7 What are the values of A, B, and C?
*March 9, 2009*

**Biology**

5' C U A C C U C A G A U U C G C C U A C C U 3' What is the DNA sequence that encodes for the word for this protein? Be sure to note the 5' and 3' ends. What is the protein? I would appreciate any feedback! Thanks! :)
*March 5, 2009*

**Biology**

5' C U A C C U C A G A U U C G C C U A C C U 3' What is the DNA sequence that encodes for the word for this protein? Be sure to note the 5' and 3' ends. What is the protein? I would appreciate any feedback! Thanks! :)
*March 5, 2009*

**Calculus**

What is the antiderivative of this? What is the antiderivative of x/((16+x^2)^(1/2))? (x / the square root of (16 + x^2))? What method did you use? Substitution, etc..? Thanks!
*March 4, 2009*

**Math**

That is what i need to know, i figured out that 4(-17) + 36 (0) 4(-17) + 36 (0) = -68 + 36 = -32 X = 0 Y = 0
*March 2, 2009*

**Math**

Graph the linear equation. I need coordinates, but don't think they match up to my choices. I would appreciate some feed back. ThankS! 4y + 36x = -32
*March 2, 2009*

**Biology**

In the following chemical reaction, what is carbon dioxide (CO2)? 12 H20 + 6 CO2 -> 1 glucose molecule + 6 O2
*March 2, 2009*

**Algebra**

Thanks for helping out I see how this fits on the graph now! So my final answer will be (0,3) {-3/7,0}?
*March 2, 2009*

**10th grade math**

3a²-a-4=0 solving for the roots,
*February 21, 2009*

**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*