Sunday

December 4, 2016
Total # Posts: 1,068

**math**

2x^3(x^2+2x)^-1/2 -(x^2+2x)^1/2 / x^2 the whole numerator is over x^2

*March 22, 2010*

**Advice on IB subjects**

Hey there all! Im desperate for some advice on my subjects at IB! I have decided on chem bio higher and english spanish standard. I am battling between Maths and Economics higher! I really like Maths and had decided to take it but now that I told people my options everyones ...

*March 21, 2010*

**Algebra 1**

Dumb teacher Mrs sue has no life when will we ever use any of this $hît. But anyway the answer is; it is tacks free. No spaces.

*March 9, 2010*

**chemistry**

What is the pH of the solution that results from mixing the following four solutions together? (1) 150. mL of 0.250 M NaCl (2) 300. mL of 0.200 M HCl (3) 100. mL of 0.050 M HNO3 (4) 450. mL of 0.200 M NaOAc any help is greatly appreciated!

*March 7, 2010*

**chemistry**

What is the value of [HCO3- ]/PCO2 for someone with mild acidosis, with a blood pH of 7.30? 1. 0.038 2. 0.38 3. 0.030 4. 0.30 5. 3.0

*March 7, 2010*

**chemistry**

Thanks a lot!

*March 7, 2010*

**chemistry**

Which of the following mixtures will result in the formation of a buffer solution when dissolved in 1.00 L of water? i) 0.50 mol HClO2 and 0.25 mol HCl. ii) 0.50 mol HClO2 and 0.25 mol NaOH. iii) 0.50 mol NaClO2 and 0.50 mol HClO2. iv) 0.50 mol NaClO2 and 0.50 mol HCl.

*March 7, 2010*

**6th grade math**

Operations for 9/2m - 8 = -5.5 + 4m? Please help

*March 4, 2010*

**physics The range**

U2 Sin 2a = g =34.66m

*February 14, 2010*

**math**

i need help rounding numbers. for example, 34.566 to the nearest hundreds.

*February 3, 2010*

**algebra**

2x^2-8x-42 over 6x^2 divided by x^2-9 over x^2-3x

*January 28, 2010*

**math**

2xsquare- 8x - 42 over 6x square divided by x square - 9 over x square - 3 x

*January 28, 2010*

**math**

a movie theater charges $7 for an adult's ticket and $4 for a child's ticket. on a recent night the sale of child's tickets was three times the sale of adult's tickets. if the total anount collected for ticket sales was not more than $2,000, what is the ...

*January 28, 2010*

**math**

four times the larger number of two numbers is equal to seven times the smaller.the sum of the numbers is 22.find the numbers

*January 27, 2010*

**algebra**

a-13whena=13.so33-13=20 that's the ans 3x+2y-2zwhenx=5,y=2,z=1.so3(5)+2(2)-2(1)=17

*January 27, 2010*

**9th grade**

How do you factor this expression? 10x+15

*January 24, 2010*

**Calculus**

Prove that the average of LRAM and RRAM is equal to TAM.

*January 24, 2010*

**biology**

explain the role of antigens and antibodies in natural and artificial control of diseases

*January 23, 2010*

**social studies**

Where did the pickle first originate?

*January 20, 2010*

**Algebra**

x + square root of 5 / x - square root of 5

*January 18, 2010*

**accounting**

“When in need, Google!” has become the single solution for all and any problem under the sun. Your accounting homework problems are no exception to this. By the time you settle down in college after finding campus routes, remembering locker codes and making new ...

*January 14, 2010*

**9th grade**

s8impliy this exponential expression): -2 7 -8 ) 6 -9)8 (7) * (x) * (w * (x *(4) * -3) (w

*January 6, 2010*

**algebra**

How do you do standard form

*January 6, 2010*

**social studies**

the ottomans adopted a policy of religious tolerance.why did they follow this path?The golden Age of muslim.

*December 15, 2009*

**Physics**

A football player kicks a football with an initial velocity of 30m/s at an angle of 55 degrees relative to the flat ground. a)what is the speed of the football at its highest point b)find the highes point reached c)find the total time in the air d)how far is the football ...

*December 13, 2009*

**math**

What multiplication fact can be found by using the arrays for 2x9 and 5x9?

*December 7, 2009*

**Physics**

Measured along the surface of the water, a rectangular swimming pool has a length of 15.9 m. Along this length, the flat bottom of the pool slopes downward at an angle of 16.9 ° below the horizontal, from one end to the other. By how much does the pressure at the bottom of...

*November 30, 2009*

**Physics**

The Mariana trench is located in the Pacific Ocean at a depth of about 11 000 m below the surface of the water. The density of seawater is 1025 kg/m3. (a) If an underwater vehicle were to explore such a depth, what force would the water exert on the vehicle's observation ...

*November 30, 2009*

**Physics**

Standing waves are set up on two strings fixed at each end, as shown in the drawing. The two strings have the same tension and mass per unit length, but they differ in length by 0.55 cm. The waves on the shorter string propagate with a speed of 41.8 m/s, and the fundamental ...

*November 30, 2009*

**Physics**

A string has a linear density of 6.7 x 10-3 kg/m and is under a tension of 210 N. The string is 1.6 m long, is fixed at both ends, and is vibrating in the standing wave pattern shown in the drawing. Determine the (a) speed, (b) wavelength, and (c) frequency of the traveling ...

*November 30, 2009*

**Physics**

The transverse standing wave on a string fixed at both ends is vibrating at its fundamental frequency of 250 Hz. What would be the fundamental frequency on a piece of the same string that is twice as long and has four times the tension?

*November 30, 2009*

**chemistry 11**

Hi, I am stuck on a couple questions in chemistry 11. The questions are 1. Calculate the number of moles of the anhydrous salt left behind 2. Calculate the number of moles of water removed by heat from your sample of hydrate. 3. Calculate the moles of water per mole of ...

*November 22, 2009*

**12th grade**

Can someone look over my admissions essay for Brown?

*November 21, 2009*

**math**

3,000 / 90 = 33.33 students per instructor 3,500 / 33.3 = 105.1 105 - 90 = 15

*November 11, 2009*

**english**

what does the prefix etym mean

*November 6, 2009*

**literacy**

i need to know which country these words came from caravan,yoghurt,sofa,dessert and shampoo

*November 6, 2009*

**artist**

1485 to 1489

*October 19, 2009*

**social economics politics**

debate the following proposition: "the countries of india and china have a "right" to pollute the environment until they catch up with more industrialized countries".

*October 12, 2009*

**4th grade Math**

34

*September 29, 2009*

**physics**

F=ma , T=ma T = (61kg)(9.81m/s^2) = ? N (do the math) Constant rate would mean there is no acceleration, so T = ma + m(0)== ma Furthermore, if the gymnast is climbing up at a certain acceleration, lets say 2.1 m/s^2, use the rate at which they climb for the acceleration in the...

*September 27, 2009*

**math**

how can i round each number to the place of the underlined digit?

*September 22, 2009*

**math**

how can i rounfd each number to the place of the underlined digit?

*September 22, 2009*

**government**

What is the action between the President and another head of state called?

*September 17, 2009*

**7th grade**

waht is used to mix substances, like a spoon, is two words?

*September 3, 2009*

**MATH Dx**

6/10

*August 31, 2009*

**science**

How do I diagram the four plant families? ( I remember rose family and pea family)

*August 18, 2009*

**Science**

What are the challenges of managing your chosen terrestrial resource issue?

*July 21, 2009*

**fractions**

i want to email you. please send email so i can send my math problems to you.

*July 19, 2009*

**Algebra**

In an arithmetic series, the terms of the series are equally spread out. For example, in 1 + 5 + 9 + 13 + 17, consecutive terms are 4 apart. If the first term in an arithmetic series is 3,the last term is 136, and the sum is 1,390, what are the first 3 terms?

*July 14, 2009*

**arithmetic**

N = the term number right?

*June 21, 2009*

**arithmetic**

How do you find the sum number of an arithmetic sequence? I forgot and my textbook does not explain it well.

*June 21, 2009*

**Chemistry UGH**

Help please! I can't solve any of these, would someone be as kind as to show me the answers? How many moles of NaHCO3 are in a 125.0 g sample of the compound? 3. How many moles are in 6.73 x 1024 water molecules? 4-5. AgBr, a chemical used in photography can be made with ...

*May 28, 2009*

**Chem**

If the rocket engine contains 1500.0 g of H2O2 and an excess of N2H4, what volume of water vapor will be produced when the rocket fires up to a temperature of 540oC and a pressure of 1.2 atm? I honestly don't GET this thing, ugh =( Please Help!!

*May 28, 2009*

**12th grade**

Penn Foster Examination #93051 Cooking Appliances I've gotten 16 out of 25 completed but I'll just post the whole exam to make sure I have THOSE right. Thanks for your help guys!

*May 23, 2009*

**Calculus**

YA i can't fingure out how to use it either im thinking that it could be the xi = a+x(change of x)

*May 5, 2009*

**math**

I have the number of gun deaths in 2005=36,038 2009=43,146 I think these are too high but I followed the equation to arrive at these numbers. Have I made a mistake? I cannot figure the 9,383 number into a year after 2000.Can anyone help me?

*May 2, 2009*

**math**

The equation y=1777x27,153 can be used to predict the number of gun deaths in the US x years after 2000 that is x=o corresponds with 2000 x=3 corresponds to 2003 etc Predict the number of gun deaths in 2005 and 2009 In what year will the number of gun deaths be 9,383?

*May 2, 2009*

**Math**

I have figured the equation for this word problem Train A is traveling parallel to Train B. Train A is traveling at 100 mph and Train B at 110 mph Train A passes a station at 1:15pm Train B passes the same station at 1:45pm When will Train B catch up with Train A? I have 100*t...

*May 2, 2009*

**Algebra**

Find the Domain of the function g(x)=7/7-4x Please help me understand this better Thanks

*April 30, 2009*

**5th grade**

2/4 and 3/7

*April 7, 2009*

**physic**

A spring has stiffness of 100Nmm, the initial compression of the spring is 15mm, and it is then compressed to 65mm. •1Nmm = 0.001Nm •100Nmm = 100 X 0.001 = 0.1Nm •Comp.1 = 15 mm = 0.015m •Comp.2 = 65 mm = 0.065m a) i-Find potential energy at 15mm. ii- Find ...

*April 2, 2009*

**Chemistry**

A voltaic cell is constructed as follows: Ag(s)|Ag^+,(satd Ag2CrO4)||Ag^+(0.110 M)|Ag(s). What is the value of Ecell? For Ag2CrO4, Ksp=1.1*10^-12.

*March 28, 2009*

**english**

please proof read.

*March 23, 2009*

**english**

Even as mankind evolved from Neanderthals to humans, It has never officially withdrew its inherent selfish predatory trait. Evolution has taught mankind an evil lesson: “Survival of the fittest”. Likewise, in the text George shoots Lennie not only as result of the ...

*March 23, 2009*

**english**

please proof read.

*March 23, 2009*

**english**

Throughout the novel it is evident that Lennie and George share a deep and faithful relation with one another. For example, Although George acts as Lennie’s caretaker, they both have a sense of trust, companionship, togetherness which no other characters seem to have in ...

*March 23, 2009*

**english**

ms sue i just proofread it. I want to make sure it is good before i integrate the secondary sources. do you mind if you proofread a couple of paragraphs. please note i removed the page numbers of the quotes to save space.

*March 23, 2009*

**english**

could anyone proof read my essay? could i send it to someone? If i post it here people might steal it. please i really need someone to proofread it.

*March 23, 2009*

**chemisrty**

a 445 g sample of ice at -58 degrees celcious untill its temperature reaches -29 degrees celcius. find the change in heat content system

*March 22, 2009*

**english**

how can i improve this opening paragraph? can anyone please proof read. "Life, liberty, and the pursuit of happiness” is a quote coined by America's forefathers after the signing of the Declaration of Independence in 1776 which refers to the freedom and ...

*March 21, 2009*

**english**

I need someone to proof read my essay? are there any communities where i can get it proof read?

*March 20, 2009*

**Earth Science**

Coastal areas are usually warmer in winter than areas inland because?

*February 17, 2009*

**6th grade**

where can i get help with the geometric shapes

*February 12, 2009*

**history of the arts**

The Grand Tour was considered a feature of affluent men and women. true or false I am not sure, but reading through the text it says it was the large cultural visit to sites in southern europe. given that i believe it is true!

*February 5, 2009*

**history of the arts**

The Grand Tour was considered a feature of affluent men and women. true or false

*February 5, 2009*

**3rd grade math-help**

Write three ways to find 3x2x4

*January 20, 2009*

**Math (Probability)**

I've worked out the first part of the question, just need help with the second part which is: The spinner has three sections. While no two are the same size, one of the sections is half the size of another. • You are more likely to get 2/3 than one if you sum two ...

*January 9, 2009*

**Math**

My question: A spinner looks like this: A disc divided into sections that might or might not be the same size, with a pointer that when spun will land on some part of the disc at random. The sections might be colours, or, as in these problems, have numbers in them. There are ...

*January 8, 2009*

**biology**

what letter represents the nucleus of a cell?

*January 8, 2009*

**science**

Does anyone know what letter represents the nucleus of a cell?

*January 7, 2009*

**Science**

What letter represents the nucleus of a cell?

*January 7, 2009*

**french**

merci beacoup madame

*December 15, 2008*

**french**

Bonjour madame I am back and i had help from James :D If you don't remember i am using a windows vista pc (this time)I would like to know if the sentences we have created are in proper grammatical order I was born at burnaby general hospital, I weighed 7 pounds. Je suis n&...

*December 15, 2008*

**calculus**

find solution to differential equation given the initial conditions DQ/dt=Q/5 Q= 50 when t= 0 i don't understand this one because of the division sign.

*December 4, 2008*

**Calculus**

thank you!!

*December 4, 2008*

**Calculus**

Find the solution subject to the initial conditions. dP/dt = -2P P(0)=1 dP/-2P = dt then do i take the antiderivative? what would i do next??

*December 4, 2008*

**One more math help!**

Variable = x X*83 1/3% = 13.5 X = 13.5 / .83 1/3% or .83333 X = 16.2

*December 3, 2008*

**algebra**

You would isolate the variable to one side of the inequality. A+7<10 A< 3 Whenever A is less than 3 the inequality is true. If it were -A-8 < 10 -A < 18 At this point you would divide both sides by -1, when dividing by a negative with an inequality the inequality ...

*December 3, 2008*

**Game Theory**

Policy makers in Washington, D.C., face a dilemma. On the one hand they can try to pressure the Iraqi government into trying to disarm the militias. If the effort to disarm the militias succeeds, this might put an end to the sectarian violence and bring some sort of stability ...

*December 3, 2008*

**11th grade**

there is no queshtion here for me to answer

*December 2, 2008*

**Diffraction**

Minimum intensity occurs at an angle θmin given by dsinθmin = λ d is the slit width (0.075m) Stadnik's class?

*December 2, 2008*

**graphing lines in the form**

graph linear equation 3x-6y-9=0

*December 2, 2008*

**math**

Two-Thirds

*December 1, 2008*

**spelling**

That's a good way to start! Thank you!

*December 1, 2008*

**spelling**

need couple of analogies for the following words: lenght, green,downpour, string,tree, brush. The analogies need to start with one of the following:scr, spr,str,thr.

*December 1, 2008*

**ponctuation, mechanisme, and writing**

My new coworker, a Muslim, is actually quite nice.

*November 27, 2008*

**french**

I use a windows xp PC

*November 26, 2008*

**french**

I'm sorry Madame but the accents look all funny again o.0

*November 26, 2008*

**french**

odd sorry about that I am using a PC

*November 26, 2008*