Friday

March 27, 2015

March 27, 2015

Total # Posts: 3,011

**Physics**

At t = 0, a stone is dropped from a cliff above a lake; 2.0 seconds later another stone is thrown downward from the same point with an initial speed of 33 m/s. Both stones hit the water at the same instant. Find the height of the cliff.
*September 13, 2010*

**college: psychology**

3. Define proactive & retroactive inhibition. Create a memory strategy to help you remember & discriminate between them. Explain this strategy well enough so that a reader could learn to use it.
*September 13, 2010*

**conversion**

a)339 Cal to kilowatt-hours
*September 11, 2010*

**6th grade science**

you are right!<:
*September 11, 2010*

**Geography**

I'm confused. What's this article got to do with the question I posted. The website has to do with the rainforest
*September 10, 2010*

**Geography**

This is my last question that I'm struggling with. We had to do 25 of them and this one I can't figure. Thank you for your help. It's greatly appreciated. Have a great weekend!!! More water flows through the Amazon Basin than through any other river system. ...
*September 10, 2010*

**Geography**

Due to the violent & complex origins of the Andies, many rich & precious metals and minerals were found in the Andies. The inital economic wealth of many Adean coutries came from mining gold, silver, tin, copper, and iron. How can this cause conflict with other nations?
*September 10, 2010*

**Math(Please help)**

1) An expression that occurs in calculus in given. Reduce the expression to lowest terms. (2x + 5) 4x - 2x^2(2) / (2x+5)^2 I have no idea what to do for this. 2) Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are ...
*September 9, 2010*

**Math(Please help)**

1) An expression that occurs in calculus in given. Reduce the expression to lowest terms. (2x + 5) 4x - 2x^2(2) / (2x+5)^2 I have no idea what to do for this. 2) Simplify the expression. Express the answer so that only positive exponents occur. Assume that all variables are ...
*September 9, 2010*

**Please check answers)**

SO for #2 the answer is a-a^2 or +a^2?
*September 9, 2010*

**Please check answers)**

Perform the indicated operations and simplify the result. Leave your answer in factored form. 1) x/16 - 1/x all over 1 + 4/x A) x+4/16 B) x-4/16 C) 16/x+4 D) 16/x-4 E) -16/x+4 I chose answer C. I saw this as x^2-16/ x+4. Multiply the following using the FOIL method. Express ...
*September 9, 2010*

**Math(Please check answers)**

Factor completely. If the polynomial cannot be factored say it is prime. 1) 15x^3 + 19x^2 + 6x A) (3x^2 +2)(5x+3) B) x(3x+2)(5x+3) C) x^2(3x+2)(5x+3) D) x(5x+2)(3x+3) E) Prime I chose E) Prime. 2) 2x^2 - 14x - 6x + 42 A) 2(x+7)(x+3) B) (x+7)(2x-6) C) 2(x-7)(x-3) D) (x-7)(x-3) ...
*September 9, 2010*

**English**

How would you write this as a topic sentence so it sounds like a theme for a book. The author is great at making someone who has a handicap or disability not feel so abnormal but a benefit to society.
*September 8, 2010*

**Calculus**

Thank you. Can you tell me how to actually work the problem, too? Thanks again!
*September 7, 2010*

**Calculus**

Determine whether the curve has a tangent at the indicated point. f(x)= sin x 0<x<3pi/4 cos x 3pi/4<x<2pi at x = 3pi/4
*September 7, 2010*

**Math**

Simplify expression. Answers should only have positive exponents. Assume all variables are positive. (4x^2 y^-1/3)^3/14 so would it be x^2(3/14) and y^-1/3(3/14)?
*September 7, 2010*

**English**

What does this mean? Gray Fire learns a lesson in excessive pride as a child when he believes that he can outrun the night and later must sacrifice his own toes to save his life, which then renders his gift of speed useless.
*September 7, 2010*

**Math**

Simplify expression. Answers should only have positive exponents. Assume all variables are positive. (4x^2 y^-1/3)^3/14 so would it be x^2(3/14) and y^-1/3(3/14)?
*September 7, 2010*

**math**

explain why 1,734 is greater than 175
*September 7, 2010*

**Math**

estimated population
*September 7, 2010*

**Math(Please help)**

Simplify each expression. Assume all variables are positive. 1) 3 sqrt2 - 8 sqrt128 I think you subtract the 3 from the 8 but I do not know what else to do. 2) Simplify expression. Answer should have only positive exponents. (8x^3 y^-1/2)^2/15 Do I multiply the exponents?
*September 6, 2010*

**Math**

is it like a picture and you use the protractor to find the measure?
*September 6, 2010*

**chemistry**

density = mass/volume
*September 6, 2010*

**Math**

Directions: Use each statement as givena and draw a single conclusion using all of the statements. 1) No birds,except ostriches, are nine feet high.There are no birds in this aviary that belong to anyone but me. No ostrich lives on mince pie. I have no birds less than nine ...
*September 6, 2010*

**Math**

Simplify each expression (-216)^1/3 My answer is 1/6. Am I correct. (x^4y)^1/3 (xy^4)^2/3 I do not know how to simplify this.
*September 6, 2010*

**Math(Please check)**

How did you get 3?
*September 6, 2010*

**Math(Please check)**

Sorry I forgot a question. 2) rationalize the denominator. 4/sqrt6 My answer is 4sqrt6/ 6 Am I correct?
*September 6, 2010*

**Math(Please check answer)**

Simplify each expression. 1)(sqrt7 + 5)(sqrt7 -6) My answer is sqrt 7 - 30 Am I correct?
*September 6, 2010*

**Math(Please check answers)**

Thank you!
*September 5, 2010*

**Math(Please check answers)**

1) Solve the equation: 15(7x-6) = 3x-5 My answer is (-85/108) 2) Mary and her brother collect coins. Mary has 4 times the number of coins that her brother has. Together they have 175 coins. How many does Mary have? My answer is 140 3) Perform the indicated operations. Express ...
*September 5, 2010*

**chem**

and also. A car seat fades with extended exposure to sunlight. thats chemical not physical right?
*September 4, 2010*

**chem**

when Flour, water, sugar and other ingredients are combined and baked into a cakeis that a chemical change?
*September 4, 2010*

**math**

how do u do 18t +12r over 3?
*September 1, 2010*

**Math**

Thank you!!
*August 29, 2010*

**Math**

Simplify each expression: 1) (x+8)^2 = x^2 + 64 2) (x-2)^3 = x^3 - 8 So for (x+8)^2 i would use a^2 + 2ab + b^2 and a would be 8 but what is b? Would it be 64?
*August 29, 2010*

**Math(please check)**

so for (x+8)^2 i would use a^2 + 2ab + b^2 and a would be 8 but what is b? Would it be 64?
*August 29, 2010*

**Math(please check)**

Simplify each expression: 1) (x+8)^2 = x^2 + 64 2) (x-2)^3 = x^3 - 8 3) (x-2y)(x+y) = x^2 - xy -2y^2 4) (x+2)(x^2+3x-2) = x^3 + 5x^2 + 4x-4 Are my answers correct?
*August 29, 2010*

**Math(Please check)**

Nevermind i added wrong. I got it. Thanks!!
*August 28, 2010*

**Math(Please check)**

How do I get 350?
*August 28, 2010*

**Math(Please check)**

Divide 5x^4 - 3x^2 + 8x + 6 by x^2 + 8 My answer was 5x^2 - 43 with a remainder of 8x - 338. Is this correct?
*August 28, 2010*

**Math(Please check)**

State whether the expression is a polynomial. If it is, state the degree. a) 3x^2 - 7x + 2 = yes;3 b) 3x - 2/x = No c) sqrt2x^2 - 3pi = yes;2 sqrt2x + 5x = yes;1 Am I correct?
*August 27, 2010*

**Math**

Simplify the equation: 8^-3 X 8 I know that 8^-3 is 1/512 so do I now multiply the 8 to the 1 and 512?
*August 26, 2010*

**Math(Please help)**

Simplify the expression: (x^9y^-4)^6 x^54/y^24 Is this correct?
*August 26, 2010*

**Math(Please help)**

Simplify the equation: 8^-3 X 8 I know that 8^-3 is 1/512 so do I now multiply the 8 to the 1 and 512?
*August 26, 2010*

**math**

Simplify the expression: (x^9y^-4)^6 x^54/y^24 Is this correct?
*August 26, 2010*

**math**

Simplify the equation: 8^-3 X 8 I know that 8^-3 is 1/512 so do I now multiply the 8 to the 1 and 512?
*August 26, 2010*

**conversion problems**

ok! i get it thanks:)
*August 25, 2010*

**conversion problems**

wait shouldn't it just be one number for the answer?
*August 25, 2010*

**conversion problems**

oh = 12600/4880 g/cm^3 so how did u get from that to = 315/122 g/cm^3 ?
*August 25, 2010*

**conversion problems**

so would it be 12600/4880? so. 2.582 i have no idea if i did that wrong.
*August 25, 2010*

**conversion problems**

Im not sure how to convert these because of the cm cubed heres the question: An aluminum engine block has a volume of 4.88 L and a mass of 12.60 kg. What is the density of the aluminum in grams per cubic centimeter? so its gonna be something g/cm3 can you tell me what it is ...
*August 25, 2010*

**dif. bet. Mm and mm**

oh haha thats y i was totally off thanks!
*August 24, 2010*

**dif. bet. Mm and mm**

I was just working on a problem and i seem to keep getting it wrong. I think i might be converting wrong. all im wondering is.. is Mm the same as mm(millimeters)?
*August 24, 2010*

**conversion problems**

150. cm to millimeters i got it to 1500mm. but it said check the number of sig figs.
*August 24, 2010*

**com 285**

do you just need to know some info about it. heres a site that i find helpful htt*p://owl.*english.purdue.ed*u/owl/resource/6*36/01/ (take out the *'s
*August 24, 2010*

**science**

im pretty sure that equation is for Partial Pressure. Im not sure how to explain it though sorry :/
*August 24, 2010*

**Chemisty (Sig Figs)**

oh i understand thanks a bunch! youve helped me a lot!!
*August 23, 2010*

**Chemisty (Sig Figs)**

oh so i have to round. so id be 7.7e6?
*August 23, 2010*

**Chemisty (Sig Figs)**

this is my last question for the whole assigment and im soo glad!!! (9465 + 45 - 9.9) 8.1 X 10^6 i got 76950.e6 it said it was half right and said check your number of sig figs
*August 23, 2010*

**Maath**

first-distribute second-put like terms together third- get r on one side i didn't do the problem. but thats the steps
*August 23, 2010*

**Math**

A woman sells 18 containers of milk a day. Each container holds 22 quarts and a quart of milk weighs 1 1/2 pounds. If each of the cows give 25 pounds of milk a day, then at least how many cows must she have?
*August 23, 2010*

**Chemisty (Sig Figs)**

79.7 + 890.43 - 23 = 9.5 e2 its wrong and I am suppose to correct it.
*August 23, 2010*

**Chemisty (Sig Figs)**

Each of the following numbers was supposed to be rounded to two significant figures. For each one below, decide whether it was correctly rounded or not, and for those that were incorrectly rounded, correct them. (a) 3.149 e3 to 3.2 e3 Its incorrect but I dont know the correct ...
*August 23, 2010*

**French**

oh ok, I got it busy schedule. right. Thanks:)
*August 22, 2010*

**French**

oh so emploi du temps is schedule... oh ok. so do you think le lycee would work?
*August 22, 2010*

**French**

ok, so is emploi like a schedule or I thought it was a job?? Yah I have to use voacbs words from the chapter which focus on school and likes and dislikes.
*August 22, 2010*

**French**

Marianne a peur de son emploi du temps ________________ et elle va parler avec son ____________ d'éducation pour abandonner un cours difficile. Whats the first one? I need help!
*August 22, 2010*

**Math**

your welcome:)
*August 22, 2010*

**Math**

y=mx+b(Slope-intercept) Slope= 4-0/0-(-3) Slope= 4/3 then put a point in the formula. 4=0x4/3+b so b=4 final equation: y=4/3x+4
*August 22, 2010*

**French III**

Also this... Je pense que Pierre va l'__________________ avec elle. Veuillez choisir une réponse. a. aller b. attendre c. amener d. prendre
*August 22, 2010*

**French III**

Marianne a peur de son emploi du temps ________________ et elle va parler avec son ____________ d'éducation pour abandonner un cours difficile. I know the second one but need help on the first. Thanks:)
*August 22, 2010*

**math-please check**

is the solution to 2x^2-4x+5... 1(+/-)((sqrt6)/2)i ??
*August 22, 2010*

**PreCal**

It's 3.1
*August 15, 2010*

**9th grade**

Identify the type of subordinate clause in the following sentence. The guy who ran out of the clinic is running late. noun adjective adverb
*August 9, 2010*

**english**

They left the oven on; consequently, the roast was burnt beyond recognition. which is it of these? conjunctive adverb coordinating conjunction correlative conjunction subordinating conjunction
*August 6, 2010*

**HIS/135 Reagan's Economics**

I was hoping for some feedback before I turn in this short essay. Assignment: Compare and Contrast the "culture of consumption "during the Eisenhower administration with the "Decade of greed" during the Reagan presidency in 175-225 words. Reagan’s ...
*July 31, 2010*

**Writing**

Thank you! That was perfect!!
*July 28, 2010*

**Writing**

For school I have to write a formal business letter. I just can't think of a way to START the letter off. I have to write to Seteven Spielberg convincing him to make a movie out of the book Andromeda Strain. (Even thhough it already is a movie.) But I don't know how to...
*July 28, 2010*

**Science**

your answers are correct
*July 13, 2010*

**EARTH SCIENCE**

Is the town located near large bodies of water. If it is it will probably be cooler than in other places. Is it located on the side of a mountain? is there a lot of vegetation in the town? What organisms can survive there?
*July 13, 2010*

**Education facts**

What percent of high school graduates go onto college(can be either 2,4or 8 year degree) and.. What percent of those that go onto college graduate from college with a degree. Please post your reliable sources that you got the information from. If you could put in in mla format...
*July 13, 2010*

**GEOMETRY**

all you have to do to figure this out is put them all in the a squared plus b squared equals c format. If the equation is true then it is a right triangle
*July 13, 2010*

**biology**

1. flies come and land on the meat and lay there eggs there that hatch into maggots. 2.A mammal that is carrying the eggs comes in contact(or it could basically be any material)with the meat and brushes against the meat putting the eggs it was carry onto the meat and later the...
*July 13, 2010*

**Science**

How many muscles does it take to smile, and how many muscles does it take to frown? How many muscles does it take to raise my eyebrows?
*July 12, 2010*

**6th grade**

there are endless possibilities in order to find the answer you have to know the total amount of money that the coins add up to
*July 9, 2010*

**Math**

solve for x logx 10 = 1/2
*July 4, 2010*

**math**

3/5
*July 4, 2010*

**math**

simplify: sqrt 18/50 Would it be sqrt 18 / sqrt 50
*July 4, 2010*

**math**

Nevermind. I figured it out.
*July 4, 2010*

**math**

multiply; write in lowest terms 14xy/3x X 9x/8y There is just so much here.Would it be 23x^2 y / 11xy?
*July 4, 2010*

**math**

Josh's gas tank is 1/5 full. After buying 7 gallons it is 7/10 full. How many gallons can his gas tank hold?
*July 4, 2010*

**math**

divide: u/9tu / 7u/6t
*July 4, 2010*

**Math**

solve: 4u^2 + 3 = -7u The sqrt part is confusing me.
*July 4, 2010*

**math**

would it be 3p^3q^4 / 4mn^2
*July 4, 2010*

**math**

simplify 5p^5q^4 /12n^4 / 15p^2 q/ 3mn^2 There is just so much here I have no idea where to start
*July 4, 2010*

**math**

Calculate dy/dt using the given information. (yÃx+1) =12; dx/dt = 8, x = 15, y = 3
*July 4, 2010*

**math**

multiply; write as a fraction (9/-2)(-7/4)(-2)
*July 4, 2010*

**math**

I think that there is no solution. Is this correct?
*July 4, 2010*

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