Friday

July 25, 2014

July 25, 2014

Total # Posts: 1,337

**calculus**

Prove that cos(sin inverse x) = square root ( 1-x^2)

**Physics**

a girl jumps off a high diving platform with a horizontal velocity of 2.77m/s and lands in the water 1.2s later the acceleration of gravity is 9.8m/s squared how high is the platform and how far from the base of the platform does she land?

**11th grade**

1.25/X = 82/100 82X = 124 82X/82 + 124/82 = X = 1.5424 Check: 0.01524 * 82 = 1.24968 = 1.25

**Math**

If light travels 10,000 km in 3.3 x 10-2 sec, how long will it take light to travel one meter.

**Math**

I think its like this... 3 to the second power is 3x3 which equals 9, but 3x2 equals 6 which is multiplication and has nothing to do with the powers and stuff. Its kinda weird at first but you will get used to doing it right.Another example is 3 to the 5th power. 3x3x3x3x3. 3x...

** english**

we are doing one about how to kill a mocking bird (the book was really good)

** english**

i am doing a book report and i havent done one since the 5th grade and now i am in 7th HELP!!!!!!!!!!!!!!!!!!!!!!!!!

**english **

that means if you do something good for someone later on you will rewarded

**Chemistry**

Well Ms. Sue, both Johannie and I were using this computer and I didn't realize her name was still on the name line.

**Chemistry**

The solution forms because of that?

**Chemistry**

The lattice energy is greater in magnitude than the heat of hydration. but what about the Last question?

**Chemistry**

When ammonium chloride is dissolved in water, the solution becomes colder. What can you say about the relative magnitudes of the lattice energy of ammonium chloride and its heat of hydration? Why does the solution form? What drives the process?

**7th grade**

well pretend that you and you sis or brother were spliting the last cookie in half soo the earth is the cookie and the hemisphere is half of the earth.

**7th grade**

my teacher is making us do a current even outside of the us and i STILL can't find a good curren event

**math**

18x^2 minus x minus 4 simplified.

**Intermediate Algebra**

Evaluate the exponential function for three positive values of x, three negative values of x, and at x=0. Show your work. Use the resulting ordered pairs to plot the graph; State the domain and the range of the function. f(x) = e^x

**Intermediate Algebra**

Evaluate the exponential equation for three positive values of x, three negative values of x, and at x=0. Transform the second expression into the equivalent logarithmic equation; and evaluate the logarithmic equation for three values of x that are greater than 1, three values...

**Geometry**

In geometry what kind of algebra do you use?

**Intermediate Algebra**

Hello I need a little help with my homework. I started trying to work it out but I am not sure if it is the correct solution. Please help! Question: Population growth. The exponential growth rate of the population of United Arab Emirates is 4.4% per year (one of the highest in...

**math**

The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

**math**

The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

**English**

I'm sorry-I needed to know what the theme was Thank you

**English**

What is the main idea of this? Please help-I'm terrible in english- Five score years ago, a great American, in whose symbolic shadow we stand today, signed the Emancipation Proclamation. This momentous decree came as a great beacon light of hope to millions of Negro slaves...

**Math**

Evaluate the logarithmic equation for three values of x that are greater than 1, three values of x that are between 0 and 1, and at x=1. Show your work. Use the resulting ordered pairs to plot the graph. State the equation of the line asymptotic to the graph (if any). y= log 1...

**science**

what is iit

**science**

A team of 6 scouts plans to cross a lake on a raft they designed. The scouts have wooden beams with an average relative density of 0.80. The beams measure 30cmx30cmx3m. The average scouts' mass is about 65kg and for their safety, they want the top of the raft to be at leas...

**science**

During a competition, a 60kg cyclist rides along a horizontal road on a bike with a mass of 5kg. During her ride, she changes gears and uses the chain wheel with a radius of 7.5cm and 36 teeth, and the rear sprocket with 18 teeth. The pedal handle is 20 cm in length. a) Assumi...

**math **

what is 7 to the 11th power equvilant to

**british literature**

1. Determine the speaker's attitude in thee lines: "Lo, all our pomp of yesterday/is one with Nineveh and Tyre!" a. the speaker feels Britain's greatness is similiar to that of ancient cities. b. The speaker believes the greatness of Britain could disappear, ...

**health information management technology**

This is supposed to be 500-700 words long :(

**Algebra**

Thanks so much

**Algebra**

Area of a painting. A rectangular painting with a width of x centimeters has an area of x^2+50x square centimeters. Find a binomial that represents the length. See the accompanying figure.

**Year 12 Biology**

What is a good and easy experiment I could do for my Year 12 biology assignment? I was thinking something with alcohol and the human body but I wouldn't know what my hypothesis would be. HELP!!

**sheltered content instruction**

Discuss what level of cognitive demand and context is represented by a student who performs each of the folowwing activities

**chemistry**

with the numbers 3, 7, 10 & 12 how you you make up the number 800 using different functions?

**chemistry**

4.The Kb of ammonia, NH3, is 1.8x10^-5. What is the pH of a 2.000 millimolar solution of ammonia , to 3 significant digits.

**chemistry**

Sorry I had a moment! I didn't process before I typed!

**chemistry**

Thank you! Can you explain to me where the 0.25 comes from?

**chemistry**

The equilibrium constant for the following reaction is 5.0 at 100c. If an equilibrium mixture contains [No2]=0.50 M, what is the [N2O4]? 2No2(g) <--> N2O4 (g) I do not understand if the Kc is 100c or where that plays in!

**chemistry**

Okay so for example P4(g) + 5O2(g) <==> P4O10(s) that would go to the right?

**chemistry**

Can anyone explain Le Chatelier's principal? How you know when it shifts to the products and reactants? Such as in 3O2(g) --><-- 2O3(G) 2CO2(g) --><-- 2CO(g) + O2 Thanks!!

**chemistry**

thanks for all this help! so for this one, 1 - it would be 0.108 x 35.7 = 3.86 moles of Na2CO3 2 - 2.86 moles Na2CO3 / 2 Moles HNO3 = 1.93 Moles HNO3. 3 - 1.93 Moles HNO3 x 0.150 M HNO3 = 0.290 L which would equal 290 mL. Is this the final solution? 4 - I need help with this o...

**chemistry**

what volume (in ML) of a 0.150 M HNO3 solution is required to completely react wtih 35.7 mL of a 0.108 M Na2CO3 solution according to the following balanced chemical equation? Na2CO3(aq) + 2 HNO3(aq) --> 2NaNO3(aq) + H2O(l) then, in the reaction above, what mass (in grams) ...

**chemistry**

my teacher insists that we do it that way, i don't really understand it but i try! so it would come out to be 0.026 moles Pb(NO3)2. Then, converting Pb(NO3)2 into KCl it would come out to be 0.052 Moles KCl. Then divide 0.052 by 0.150 which would equal 0.15 L?

**chemistry**

okay so the solution would be. 0.150 M KCl x 0.175 M Pb(NO3)2/ 1 M KCL x 0.150 L/0.175 M Pb(NO3)2 = 0.023 L?

**chemistry**

what volume (in L) of 0.150 M KCl solution is required to completely react with 0.150 L of a 0.175 M Pb(NO3)2 solution according to the following balanced chemical equation? 2KCl (aq) + Pb(NO3)2 (aq) --> PbCl2 (s) + 2 KNO3 (aq)

**Finance**

Newdex has net income of $2,500,000 and 1,000,000 shares outstanding. It needs to raise $3,610,000 in funds for a new asset. Its investment banker plans to sell an issue of common stock to the public for $40 per share, less a spread of 5%. How much must Newdex's after-tax ...

**chemistry**

How much heat is evolved when 1258 g of water condenses to a liquid at 100.°C?

**chemistry**

How much heat is evolved when 269 g of ammonia gas condenses to a liquid at its boiling point?

**Economics**

What are some national fiscal policies that can affect mortgage rates, housing starts, and housing prices?

**physics**

wouldn't the gravitational attraction stay the same and be 6.67 E -11 N*m2/kg2 as stated in the equation? I'm sorry I'm having a really hard time with this

**physics**

Gravitational force of attraction “F” exists between two point masses A and B when a fixed distance separates them. After mass A is doubled and mass B is quartered, the gravitational attraction between the two masses is

**physics**

A 5.0 N force directed to the west acts on an object for 2.0 seconds. What is the change in momentum of the object? Do I have to divide 5.0 by 2.0 in order to get the momentum or multiply?

**Chemistry**

Which aqueous solution has a freezing point closer to its predicted value 0.01 m NaBr or 0.01 m MgCl2?

**college**

Jake, you are right. I figured out the answer of 2/3 also.

**math**

Vanessa, the answer should be 288cm. for the surface area all you do is multiply lenght width and height

**Algebra1**

I am solving for linear equations and I'm wondering if I did Step 3 right.. 3x-y=8 x-y=8 Step 1 3x-y=8 3x-y+y=8+y 3x=8+y 3x/3=8+y/3 x=(8+y/3) Step 2 3(8+y/3)-y=8 8+y-y=8 8+2y=8 8+2y-8=8-8 2y=0 2y/2=0/2 y=0 Step 3 x=8+y(0)/3 x=2.6

**Economics - stock purchase**

Can someone please help me? I am so confused! My homework is called stock purchase and I need to find some information abut three stocks. I'm starting with microsoft. The first three questions are the stock name, symbol, and address of the headquarters. But after that it a...

**Math**

How to solve x^6 3x^3 2=0

**Finance**

If I had put 50,000 dollars away today in some kind of cd or money market account, and did not touch it or the interest for 20 yrs, how much money would I have, same ? with 80,000 please help

**Physics**

I thought to reduce the frequency of a particle, you would have to decrease the speed. no?

**science**

Im confused though, it says three lines result from transitions to the nf=2, which three lines?

**science**

Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c). 4861.3 d). 6562.8 and e). 10938. Three lines result from transitions to the nf = 2. The other two result from transitions in different series, one with nf = 1, and the other...

**science**

Five lines in the H atom spectrum have the following wavelengths in Ǻ: a). 1212.7, b). 4340.5, c). 4861.3 d). 6562.8 and e). 10938. Three lines result from transitions to the nf = 2. The other two result from transitions in different series, one with nf = 1, and the other...

**Physics**

Light travels in a line of optical fiber by total internal reflection between a core of refractive index 1.48 and a cladding 1.46 refractive index. The critical angle for total internal reflection to occur inside the core of the fiber is ... 80.6º 48.8º 43.2º 4...

**Physics**

The refractive index of a medium changes with the wavelength of incident light. Typically, the shorter the wavelength the larger the refractive index. Fused quartz has a refractive index of 1.47 for indigo light of 400 nm in wavelength, and a refractive index of 1.46 for green...

**physics**

if a clown lets go of a rope that has an object attached to it traveling in a circular motion, what will happen to the object

**English**

Is there a website that you can type in a sentence and it will give you the parts of speech of that sentance?

**Intro to algebra**

2 + 5(x - 9) = -18 what does X equal?

**Language arts**

Ship is to trip as shout is to trout..

**ALGEBRA**

Part B. Each auditorium has both floor seats and balcony seats. Auditorium A has 250 floor seats and 310 balcony seats and Auditorium B has 195 floor seats and 410 balcony seats. Let f represent the cost of a floor seat and b represent the cost of a balcony seat. If you let R...

**ALGEBRA**

Answer the questions below. Use Equation Editor when writing or solving mathematical expressions or equations. First, save this file to your hard drive by selecting SAVE AS from the File menu. Click the white space below each question to maintain proper formatting. Part A. A c...

**ALGEBRA**

Can anyone explain this in 50 words why the equation turns out like it does? -6x-18=-6x+5 0x=23 and can not have zero in the denominator. Division by zero is undefined. 15x+18=15x+18 0x=0 Well, if you take anything times zero the resulting product is zero.

**ALGEBRA**

please help me explain this in 50 words.. Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

**ALGEBRA**

Can anyone help me I need to explain this problem in 50 words. Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

**ALGEBRA**

Beagleboy how do I explain that in 50 words? Post your 50-word response to the following: Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

**ALGEBRA**

How do I explain this in 50 words I dont even know how the answer was done?

**ALGEBRA**

Post your 50-word response to the following: Explain why the equation -6(x + 3) = -6x + 5 has no solution and 7x +18 + 8x = 8(x + 4) + 7x – 14 has infinitely many solutions.

**Chemistry**

An alpha particle (mass 6.6 x 10^-24 grams) emitted by radium travels at 3.4 x 10^7 plus or minus 0.1 x 10^7 mi/h. (a) What is its de Broglie wavelength (in meters)? (b) Whats uncertainty in its position? for part a I got -3.41 x 10^6 meters which said it was wrong and I don&#...

**Chemistry**

im almost done with my hw just last six i dont get, i need the molecular, total ionic, and net ionic equations please Aqueous solutions of potassium phosphate and calcium nitrate are mixed .Aqueous solutions of barium chloride and sodium sulfate are mixed. Magnesium is added ...

**english**

What is the when or were for the adverb out in this sentence. Women brought out gardening tools and baskets.

**Physics**

You watch a distant woman driving nails into her front porch at a regular rate of 1 stroke per second. You hear the sound of the blows exactly synchronized with the blows you see. And then you hear 1 more blows after you see her stop hammering. How far away is she

**Algebra1**

If 365 = 5m + 5, value m

**4th grade math**

nick had 1 and 3/4 gallon of milk how many pints of milk does nick have hint there are 8 pints in 1 gallon

**4th grade**

Write 3 different improper fractions that equal 4 and 2/3

**social studies**

The relationship between the environment people live in and their culture is that when you see the environment of a person’s house their food and other surfaces of their house you will automatically know their culture or some thing related to it. Im not sure but is this r...

**social studies**

what is the relationship between the environment people live in and their culture?

**Social studies**

what is the relationship between the environment people live in and their culture?

**social studies**

your town or city is oing to have a culture fair. the fair will introduce people to new cultures. it will also introduce people to new cultures. it will also introduce people to diffferent culures within the United States. write a public service message for a local radio stati...

**Social Studies**

Why do you think people in one culture someimes do not understand people in anoher?

**Social Studies**

Why is no culture exactly like any other culture?

**Algebra**

Dear troubled students, Well to be gramatically correct the smaller ones take less time to make. The smaller ones also consist less material so the prise is less to make one. I have always known it to be better to but the smaller ones even though it dosen't seam as big. If...

**health**

Are calories good for health? Why or why not. Thanks Alot!

**Math**

Is 5+98+45+798-654=56

**school**

Is there any specialized high school for either girls only or girls and boys seperate?

**school**

Is there any specialized high school for either girls only or girls and boys seperate?

**school**

Hi. My name is Samantha. I'm in the 8th grade. Lots of people have been talking to me abou specialized high school. Can you please give me some information on specialized high school(I mean like what are the good and bad things obout specialized high school)? And can you p...

**religions**

im having to write a paper considering the interrelatedness of everything in cosmos as expressed in many indigenous religions. Then explain the importance of those relationships developed and what spiritual purpose they serve for indigenous people. please help!

**Math-Distributive Property**

Use the distributive property to simplify: 3(m-1)-(2m+1)How would you do this? This is all I have 3m-1-2m+1 I don't know if that right or what to do from there. Your help is greatly appreciated.

**trig/algebra**

if p is a multiple of 3 and q is a multiple of 5 which of the following is true?

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | **9** | 10 | 11 | 12 | 13 | 14 | Next>>