Wednesday

May 25, 2016
Total # Posts: 207

**Algebra 2**

To rationalize the denominator of 4/(2+√8), Brittany multiplied by (2-√8)/(2-√8) and Justin multiplied by (1-√2)/(1-√2). Explain why both are correct.
*October 22, 2012*

*****PLEASE SCIENCE******

Well, one Kelvin is well below freezing and one Fahrenheit is a little below freezing, and one Celsius is a little above freezing, so one Kelvin must be the smallest measurement for temperature.
*October 10, 2012*

**Chemistry**

What is the temperature change in celsius when 29.5L of water absorbs 2.3 kwh of heat?
*September 26, 2012*

**physics**

What is its speed after 1.87 s if it accelerates uniformly at −4.31 m/s^2? Answer in units of m/s
*September 3, 2012*

**physics**

The initial speed of a body is 2.14 m/s. What is its speed after 1.87 s if it accelerates uniformly at 4.31 m/s^2? Answer in units of m/s
*September 3, 2012*

**physics**

A body moving with uniform acceleration has a velocity of 10.2 cm/s when its x coordinate is 3.73 cm.If its x coordinate 2.33 s later is −2.74 cm,what is the x-component of its acceleration?Answer in units of cm/s^2
*September 3, 2012*

**physics**

What is the average acceleration a between 14 s and 16 s?
*September 3, 2012*

**physics**

What is the average velocity v between 0 s and 6 s?
*September 3, 2012*

**physics**

A certain car is capable of accelerating at a rate of 0.57 m/s^2.How long does it take for this car to go from a speed of 56 mi/h to a speed of 66 mi/h? 1mi/h = 0.447 m/s.Answer in units of s
*September 3, 2012*

**physics**

A vehicle moves in a straight line with an acceleration of 5 km/h^2.By how much does the speed change each second?Answer in units of km/h
*September 3, 2012*

**physics**

Consider the expression 2π times square root of ℓ/g, where ℓ is length and g is gravitational acceleration in units of length divided by time squared.Evaluate its units.
*September 3, 2012*

**physics**

Consider the following set of equations, where s, s0 and r have units of length, t has units of time, v has units of velocity, g and a have units of acceleration. Take k to be dimensionless.Identify if these are dimensionally correct or incorrect. 1)v^2= 2as + kav 2)s = s0 + ...
*September 2, 2012*

**chemistry**

How does a straw work? Using the Kinetic Molecular Theory to explain?
*May 31, 2012*

**Math**

convert 628 kilometers to miles (round off ans to 2 decimal places)
*May 27, 2012*

**social studies**

what was the cause of the american revolution of 1776 the french revolution of 1789and the Russian revolution in 1917
*May 18, 2012*

**physics**

Amy needs 5.0 V for some integrated circuit experiments. She uses a 7.0 V battery and two resistors to make a voltage divider. One resistor is 360 . She decides to make the other resistor smaller. What value should it have?
*April 2, 2012*

**english**

the passage makes it clear that aunt georgiana??
*March 18, 2012*

**physics**

A metal rod is 40.125 cm long at 20 °C and 40.148 cm long at 35 °C. calculate the coefficient of linear expansion of the rod for this temperature range.
*February 22, 2012*

**Trigonometry**

Expressed in simplest form, (n-1/n)/(1+1/n) is equivalent to... 1.)n-1 2.)n+1 3.)n-1/n+1 4.)n
*February 7, 2012*

**Earth Science**

Can you help me find how many hours are received by these degrees of latitude during the winter (see details)? North Pole = 0 hrs of daylight Equator = 12 hrs of daylight South Pole = 24 hrs of daylight 66.5 degrees north = ? 23.5 degrees north = ? 23.5 degrees south = ? 66.5 ...
*February 2, 2012*

**Chemistry**

Could you please prove how the ice doesn't completely melt? Don't you subtract 280,000 J and 250,000 J and get 30,000 J? and then you divide it by 334 J/g and get 105 g? But I don't know what you do next.
*January 29, 2012*

**Chemistry**

An 850 gram chunk of ice at 0 degrees Celsius is dropped into a container holding 1.7 kg of water at an initial temperature of 35 degrees Celsius. Due to the presence of the ice, the temperature of the water eventually drops to 0 degrees Celsius. Show a mathematical solution ...
*January 29, 2012*

**Math**

Find the compound form of v, given the magnitude of ||v||=3 and v in the direction of 3i + 4j.
*January 17, 2012*

**Math**

Marshall knows that 0.01 is equal th 10 to the negative 2 how would he represent this using fractions?
*January 11, 2012*

**Math**

The coordinates of A and B are (7,-7) and (-2,2) respectively. If P and Q divide the line segment AB into 3 equal parts, find the coordinates of P and Q.
*December 29, 2011*

**physics**

A team of dogs drags a 112 jk sled 2.23 km over a horizontal surface at a constant speed. The coefficient of friction between the sled and the snow is 0.181. The acceleration of gravity is 9.8 m/s. Find the work done by the dogs
*December 12, 2011*

**English**

I am trying to understand my essay question, but need help putting it in simpler terms. Question: How does Selvadurai’s text encourage a critique of normative ideas about gender and/or sexuality?
*November 14, 2011*

**English**

what are some alliterations for wild that describes a tiger?
*October 31, 2011*

**Algebra**

25/42
*September 17, 2011*

**MATH 208**

There were 18,017 AIDS deaths in 2003, or 34.5% of the 1995 AIDS deaths. Determine the number of AIDS deaths in 1995. What formula who I use to solve this problem?
*June 23, 2011*

**math**

jim's 10-foot garage casts a 7-foot shadow. his house has a 17.5-foot shawdow. how tall is his house
*May 23, 2011*

**math**

Math homework help????? please? heres what it says on the paper. Using proportions, you can calculate the dimensions of objects without having to measure them. solve the problems that follow... heres the problem ===================================== amy is 5 feet tall and ...
*May 23, 2011*

**math**

amy is 5 feet tall and casts a 4 foot shadow. the pine tree has an 8 foot shawdow. how tall is the pine tree
*May 23, 2011*

**science**

chemical reaction in cells that needs oxygen to release energy and produce carbon dioxide and water as waste 1)breathing 2)exhaling c)inhaling d)respiration
*May 9, 2011*

**science**

what is the condidtion of earths atmosphere at a particular time and place?
*April 26, 2011*

**MATH**

I IM LONE ABUOT MATH HI BY
*April 9, 2011*

**Chemistry**

Please help me with this question: Calculate the theoretical yield amount of CaCl2 that would be required to change the temp of 50ml of water from room temp 20degree to 45 degrees. Heat Capacity H20 is 4.184 Jg^-1deg^-1 and density is 1g/mL. I've already calculated: Q=mc ...
*March 7, 2011*

**Chemistry**

Please help me with this question: Calculate the theoretical yield amount of CaCl2 that would be required to change the temp of 50ml of water from room temp 20degree to 45 degrees. Heat Capacity H20 is 4.184 Jg^-1deg^-1 and density is 1g/mL. I've already calculated: Q=mc ...
*March 7, 2011*

**SraJMcGin**

Thanks a lot for your previous help with my assignments, and I have Windows. I don't know how to make accent marks:\
*March 1, 2011*

**FRENCH**

Comparez les deux dessins. Puis posez les questions suivantes a votre partenaire. Voire partenaire repond avec ne...jamais.., ne... plus, ne....personne ou ne...rien. Suivez le modele. There are pictures. One for 13h00 and one for 23h00. In the 13h00 one, there are students at...
*February 28, 2011*

**FRENCH**

I have a bit of information on Negative articles in french and stuff. Like I know there is Ne+ Pas Ne...Plus Ne...Rien Ne...Jamais Ne...Que Ne....Personne Ne Pas means: not, don't etc--a lot for this Ne plus means: not anymore, no more Ne Rien means: Nothing, anything Ne ...
*February 28, 2011*

**FRENCH**

Comparez les deux dessins. Puis posez les questions suivantes a votre partenaire. Voire partenaire repond avec ne...jamais.., ne... plus, ne....personne ou ne...rien. Suivez le modele. There are pictures. One for 13h00 and one for 23h00. In the 13h00 one, there are students at...
*February 28, 2011*

**math**

Is each ordered pair a slotuion of the given system? write yes or no. 1. y=6x+12 2x-y=4 (-4,-12)______
*January 31, 2011*

**Social Studies**

um...I'm not entirely sure I think the old world map, but thats all I know
*December 21, 2010*

**Social Studies**

Who was the first person to figure out the map? Who was the first American to figure out the map?
*December 21, 2010*

**Chemistry**

How do I separate a mixture of liquids?
*November 24, 2010*

**math**

I'm thinking of a number made from the digits 3,6 and 9. Each digit is used only once. My number is an even number. My number is greater than 400. What is my number?
*October 26, 2010*

** 7th grade Science**

What types of cells in your body are no longer undergoing mytosis?
*October 26, 2010*

**Math**

oh thank you!!
*October 20, 2010*

**Math**

A runner takes 20 seconds to run 100 meters. How long to run 25 meters? (Ex. 25/100 = 20/?)
*October 20, 2010*

**Finance**

5.30
*October 3, 2010*

**physics**

170kg
*September 20, 2010*

**Chemistry**

Combustion analysis of 0.300 g of an unknown compound containing carbon, hydrogen, and oxygen produced 0.5213 g of CO2 and 0.2835 g of H2O. What is the empirical formula of the compound? C2H5O C3H8O2 C2H10O3 C2H5O2
*September 19, 2010*

**geometry**

how do you solve m<rst if m<rsp=(3x-2) and m<pst=(9x-26)?
*July 28, 2010*

**Grade 8 Geometry**

to calculate volume you use the formula V= area of b.s.(base area) x h(height) - How can I tell what face is the "base shape", especially with a triangular prism?
*May 15, 2010*

**math**

What grade are you in?
*April 29, 2010*

**math**

So, 175/1 hour ?/7 hours you will have to multiply 175 by 7 to get the answer 175x7=1225 if you need more explanation, let me know!
*April 29, 2010*

**8th grade math**

Well first you have to combine the variables, So lets start with the variable (the c), Take the -14c and put it with the 4c on the left side,to do this, you will have to +14 onto the 4c, so the answer is 18c. Next you have to get the numbers without variables on the right side...
*April 29, 2010*

**Lifeskills **

Well, have fun with that! It should be a exciting time! And to your question, I have thought of a couple, see if you like.... 1. What is the best thing about your job? 2. What is the worst thing about your job? 3. What is your usual day like at work? 4. If you were to live ...
*April 29, 2010*

**Lifeskills **

Do you mean you are going to meet with one and you want to ask him about his job?
*April 29, 2010*

**Math!!!!!!!!!!!!!!**

What is 12.60 converted into a fraction?
*April 28, 2010*

**4th grade**

hi there
*March 10, 2010*

**Math**

Thankyou that was spot on you totally helped me PEACE!!!
*February 25, 2010*

**Math**

What is 5% of 44 and 15% of 90???
*February 25, 2010*

**history**

what was teh assassination of the Ferdinand-?
*January 27, 2010*

**technology**

all can rember is that one of the stpes is to establish the problam, and form a hypothisis,
*January 27, 2010*

**technology**

what are the 7 basic steps to problem solving?
*January 27, 2010*

**history**

and what was the boxers rebillion? (these are all on ww1)
*January 27, 2010*

**history**

3) what was the Roosevelt Corollary?
*January 27, 2010*

**social studies**

what were the lines of defence dug into the earth? and what was willsons plan for peace?
*January 27, 2010*

**8th grade**

social studies: what was the area between enemy trenches, in the ww1
*January 27, 2010*

**5th grade**

Doesnt divide evenly.
*January 20, 2010*

**science**

what is gravitational potential energy and what is kinetic energy?
*October 25, 2009*

**Math**

Could someone show me how you would do the following question. Determine the roots algebraically by factoring: x^3 - 8x^2 - 3x + 90= 0
*October 6, 2009*

**French**

3.) Just like Mother Teresa, Barack Obama came from a family that taught him the importance of helping others. After college, he worked with a group of churches to help rebuild communities devastated by the closure of local steel plants. After attending law school, he led a ...
*October 1, 2009*

**French**

1.) What is a hero? To me, a hero is someone who fights for a cause, acts with self-sacrifice and works hard no matter what. Two people that I think would make the perfect hero are Mother Teresa and President Barack Obama. 1.) Quels est un héros? À moi, un h&...
*October 1, 2009*

**French**

Oh sorry, I'll try to re post the paragraph.
*October 1, 2009*

**French**

Hi there, Could you see if I have translated the English correctly into French, I was having a bit of trouble. Thanks. 1. What is a hero? To me, a hero is someone who fights for a cause, acts with self-sacrifice and works hard no matter what. Two people that I think would make...
*October 1, 2009*

**French**

Thank you so much. I just wanted to make sure, does (je voudrais être plus physiquement active en participant aux activités régulièrement.) make sense?
*September 17, 2009*

**French**

Hi there, Could you please help me by looking over these paragraphs and making sure my grammar is correct? 1.) La forme d’intelligence dominante c’est interpersonnelle. L’intelligence interpersonelle, c’est la capacité de comprendre les autres, de ...
*September 17, 2009*

**math**

daffynition decoder
*September 17, 2009*

**Spanish Help?? (URGENT)**

If someone said Soy Jannie Gooden as an answer then what would be the question that was asked.
*September 12, 2009*

**9th Grade Courses**

Enviromental science
*July 15, 2009*

**High School Math**

Thank you Marth I understand that the mean you add all the numbers then divide by the how many #'s were added right. I understand all three of them but once again is the mode the one that is repeated more than once right.
*July 14, 2009*

**High School Math**

I'm reviewing for my final exam can anyone give me some tips on this I know what this means but I just to know someone eles opinion. Thanks Under what conditions might it be appropriate to use the mean? Median? Mode? When the median and mean are substantially different, ...
*July 14, 2009*

**7th grade Life Science**

structures does not provide support for invertebrae bodies? C)Skin
*May 22, 2009*

**math**

33/48
*April 2, 2009*

**grade 9 math!!!!!!!!!! please help**

lavre has sixty-one coins, all of whichare dimes and quaters. if the total value of the coins is $9.85, how many of each kind of coins has she?
*March 8, 2009*

**algebra 1**

16x^2-121
*March 1, 2009*

**math**

will you please help me find out the definition to the word RANGE ?
*December 7, 2008*

**science:)**

An Earth's plate moves at the speed of 45mm/yr. How far will the plate move in 100years?
*December 6, 2008*

**science**

At exactly 2:00 pm, sophy the snail crawls onto a meter stick at the 10 cm mark. If he reaches the 65 cm mark at exactly 2:10 pm, what is her speed?
*December 6, 2008*

**economics**

Why or when is a ppf curve biased?
*January 11, 2008*

**economic**

What do opportunity cost have to do with slope?
*January 11, 2008*

**fractions**

i need help with fractions!!!!!!
*August 22, 2007*

**biology**

It becomes easier to identify through techniques such as karyotyping.
*April 15, 2007*

**Math**

What is a reciprocal? The reciprocal of x is 1/x; of 15 is 1/15.
*February 6, 2007*

**Math**

What is a reciprocal A number's "flip". Like if you have 2/3, it's reciprocal would be 3/2. If you have a whole number like 5, for example, than it is understood that there is a 1 under the 5. (5/1) This means that the reciprocal of 5 is 1/5.
*February 6, 2007*

**bloom highschol**

how do you write the equation of the line through (6,8) that is vertical
*January 16, 2007*