Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 824

**Precalculus**

Find the exact value of sin 15°. I got square root of 2-squaroot of 3/2 is that correct?

**Precalculus**

120 degrees?

**Precalculus**

2-3cosx=5+3cosx 0 degrees is less than or equal to x less than or equal to 180 degrees Can you please show me step by step in detail. Please do not skip a step. Thanks!

**Precalculus**

oh i get it.... how do you know what identities to use? did you memorize them?

**Precalculus**

How would you solve this trig function: cos2x=sin^2-2 how do you know what trig identities to use?

**Precalculus**

Find cot x if sin x cot x csc x = .square root 2 After reducing i got cot= square root of 2 Am i correct?

**accounting**

A fleet of refrigerated delivery trucks is acquired on January 5, 2011, at a cost of $1,200,000 with an estimated useful life of eight years and an estimated salvage value of $100,000. Compute the depreciation expense for the first three years using the double-declining-balanc...

**math**

d/dx x(1+y)^(1/2) + y(1+x)^(1/2)=0. Can some1 show me the calculation because i didnt get like the answer. [ans=-1/(1+x)^2 but my calculation=-(sqrt(y+1) (2 sqrt(x+1) sqrt(y+1)+y)/(sqrt(x+1) (2 sqrt(x+1) sqrt(y+1)+x)]

**calc 1**

Find the number c that satisfies the conclusion of the Mean Value Theorem. f(x)=x/(x+2) [1,4]

**physics**

i dont know

**government**

Each British colony was governed according to a _____, a written agreement between the settlers and the Crown laying down the colony's basic rules of government.

**Algebra**

find the vertex, line of symmetry, and minimum or maxium values of the quadratic equation f(x)=9-x^2

**calculus**

an object is dropped from a tower. the distance in t seconds is given by d(t)=4.9t^2 if the height of the tower is 146.9m , how fast is an object moving when it hits the ground??

**Random question**

Makee the world go awayyy do your remember when you loved meee... haha

**Random question**

thank you very much for your help

**Random question**

okay :/

**Random question**

Just doing a statistic here...can you name some of your favorite singers? Can be old or new.. Thanks!

**English**

From the depths of the ocean to the peaks of the mountains? does that make sense?

**English**

okay thanks!

**English**

When in disgrace with fortune and men's eyes I all alone beweep my outcast state, And trouble deaf heaven with my bootless cries, And look upon myself, and curse my fate, Wishing me like to one more rich in hope, [5] Featured like him, like him with friends possessed, Desi...

**English (poetry)**

But i thought personification is when something has human or animal characteristics?

**English (poetry)**

thanks! and is it in the last sentence "I hear it in the deep heart's core"?

**English (poetry)**

I will arise and go now, and go to Innisfree, And a small cabin build there, of clay and wattles made: Nine bean-rows will I have there, a hive for the honey-bee; And live alone in the bee-loud glade. And I shall have some peace there, for peace comes dropping slow, Dropping f...

**English (poetry)**

Thank you! :)

**English (poetry)**

IV His soul stretched tight across the skies That fade behind a city block, Or trampled by insistent feet At four and five and six o’clock; And short square fingers stuffing pipes, And evening newspapers, and eyes Assured of certain certainties, The conscience of a blacke...

**math**

24 divided by 4/5=??? I tried but i just could not get it.

**math**

9 divided by 1/6=??? I tried but I just couldn't get it!

**Math**

Find the sum: 7/12 + 7/10 =

**Algebra**

okay second onee.. 5x + 2y = 6 need to make y alone on the left side..so bring everything over to the right 2y=-5x+6 divide by 2 y=-5/2x +3 put that into calculator or graph it by hand... your y intercept is already given to you which is 3

**Algebra**

okay so heres what i got for the first one.. Triangle has to equal 180 degrees 1st angle= 2x-2 2nd angle= x 3rd angle= x+38 add them all together and equal it to 180 degrees in the end you would get 4x+36=180 solve for the equation and x is 36 now find the measure for each ang...

**English**

Yes thats what i originally thought but my English teacher wrote this on my paper: If you were to need one you would write it like “Odysseus’”. When the word ends in an “s” you simply place the apostrophe after the ending “s”.

**English**

for the name Odysseus, if i want to add an s at the end do i have to write apostrophe before or after the s? Odysseus's family or Odysseus' family

**math**

convert 56.7 into degrees, minutes and seconds

**math**

convert 56.7 into degrees, minutes and seconds

**physics**

A mirror creates an image of magnification −1/3. (a) Is the image upright or inverted? (b) If the object is 7.75 cm tall, what is the height of the image? State your answer with the correct sign. answer to part B should be in cm. thanks.

**us history**

Passed in 1935, Roosevelt's most significant reform measure was the A. Wagner Act. B. Social Security Act. C. National Labor Relations Board. D. Fair Labor Standards Act.

**History**

Not true as in mind control is not a valid reason for cult conversion. Does that make more sense?

**History**

I was thinking maybe it could be something like this: While the effects of a cult are a matter of opinion, it is important to realize that "mind control" is more of an unclear and incorrectly named reason for cult conversion. I dont know if this makes sense or maybe ...

**History**

For my history class I have to do a research report about a social topic and I want to talk about cults. My teacher said to choose one and I chose Heaven's Gate. At first I was going to talk about the harmful effects of cults but after researching it, it was hard to find. ...

**Math**

A locker combination has three nonzero digits, and digits cannot be repeated. The first two digits are 1 and 2. What is the probability that the third digit is 3?

**Math**

You choose a head coach and an assistant from a group of 12 applicants. How many different groupings are possible? I know it is either 24 for a double combination of 12 - or I was thinking for number of possibilities it could be 12x11 = 132? Can anyone help me decide what is r...

**social**

advertise what? networking like facebook, myspace is a free way to adverstise, plus they have pay for add options. One can create their own website, is that kind of what you are asking?

**algebra**

I know it is either 24 for a double combination of 12 - or I was thinking for number of possibilities it could be 12x11 = 132? This is my daughters 7th grade homework, and I am stumped on helping her.

**algebra**

You choose a head coach and an assistant from a group of 12 applicants. How many different groupings are possible?

**Chemistry**

Calculate the sodium ion concentration when 70 ml of 3.M sodium carbonate is added to 30 ml of 1.M sodium bicarbonate.

**Science**

You have the same liquid it cannot change.

**Chemistry**

You forgot to enter any of your values... if you copied this from ALEKS it won't include them. You have to type them in.

**chemistry**

What would be the mass of a bag of anhydrous magnesium sulfate, MgSO4, if it contained the same amount of magnesium as a 1.00kg bag of Epsom salts, MgSO4 x 7H2O? Give your answer in grams. please help

**chemistry**

iron+sulphur together are a mixture of small grains yellow and dark grey.Its chemical symbol is 'Fe + S'.When it reacts with oxygen they create a new chemical substance; Iron Sulphide. What do you put for 'explain the reaction using the Big Idea of Energy? :S HELP xxx

**physics urgent!!!**

A canoe of mass 70 kg with a paddler of mass 55 kg are in a river. If the river's current exerts a force of 15 N [E] while the paddler is paddling with an average force of 22 N [N38degreesW], find the acceleration of the canoe and paddler. Use both a component and trigonom...

**physics**

A canoe of mass 70 kg with a paddler of mass 55 kg are in a river. If the river's current exerts a force of 15 N [E] while the paddler is paddling with an average force of 22 N [N38degreesW], find the acceleration of the canoe and paddler. Use both a component and trigono...

**physics**

A canoe of mass 70 kg with a paddler of mass 55 kg are in a river. If the river's current exerts a force of 15 N [E] while the paddler is paddling with an average force of 22 N [N38degreesW], find the acceleration of the canoe and paddler. Use both a component and trigonom...

**Microbiology**

to solidify the media in order to obtain a pure colony

**english**

Which element of a short story would be most important to a story about a mad scientist stealing a secret weapon?

**Chemistry**

I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And then what? I think my ...

**Chemistry**

I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And then what? I think my ...

**Chemistry**

I have a question which asks... What is the Oxidation number of Nitrogen in Cu(NO3)2 I know the answer is 5+ but how do you get that?? Cu= 2+ O= 2- (Theres 3 of them so -2x3=-6...then, theres a two out of the brackets so 6- x 2 =-12) +2 - (-12)= -10? And then what? I think my ...

**8th grade science**

what contents in magma affects a volcanos explosive?

**physics**

at what altitude should a satellite be placed into circular orbit so that its orbital period is 48 hours? the mass of the earth is 5.976x10^24 kg and the radius of the eatrh is 6.378x10^6 m.

**physics**

a 1 kg mass is attached to a spring hanging vertically and hangs at rest in the equilibrium position. the spring constant of the spring is 1 n/cm. the mass is pulled downward 2 cm and released. what is the speed of the mass when it is 1 cm above the point from which it was rel...

**History**

What aspects of Japanese culture were evident in samurai training?

**Science**

ANYONE?

**Science**

Sperm cells have very little cytoplasm, while egg cells have a lot of cytoplasm. How do these different structures support the different functions of eggs and sperm?

**Chemistry**

Can dimethylformamide be stored in plastic bottles? Or is it better to store in glass bottles?

**chemisty**

how many grams of magnesium sulfate are required to make 575 ml of a 1.65% (m/v) solution

**History**

How did Buddhism spread through Korea into Japan? Explain how Duddhism and Shinto blended together.

**History**

How would i word the answer though?

**History**

Where are China and Korea located in relationship to Japan? Why did this location allow for Japan to be influenced by many cultures at once?

**Science**

Does anyone have an answer?

**Science**

An animal has an allele for yellow eyes, but its eyes are grey. The allele for yellow eyes must be

**Science**

A person's height, eye color, and skin tone are all examples of?

**Math **

7 (x-2y) minus cubed

**Math**

Lisa bought two equal pieces of fabric. She will cut squares for a quilt from the fabric. All together Lisa bought 5 yards 1 foot of fabric. What is the length of each piece of fabric?

**Math**

I have 5 books. Each book weighs 1 kilogram 250 grams. How much is the total weight?

**math**

A rectangle has a perimeter of 24 and an area of 35 square feet. What is the length and width of the rectangle?

**chemistry**

How do you find Kc for an equilibrium problem?

**Chemistry**

what is an example of a substance that has both ionic &covalent bonds & where are these bonds formed.

**chemistry**

I keep thinking that 3 is the van't hoff factor for ammonium chloride, but I keep getting my answer wrong. Any ideas?

**math**

what percent of 1/4 is 2/5

**Accounting ethics**

I got some help to get started but the material still seems like a foreign language. Someone layed out a nice outline for me to follow, but without understanding the material I still can't get anywhere. It is how to CONDUCT a stakeholder analysis I am stuck on. The few par...

**sociology**

i have the same question that link doesn't help at all.

**physics**

During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 1.10 108 V, with the cloud being at the higher potential. What is the change in an electron's electric potential energy when the electron moves from the...

**Chemistry**

How many moles of HCl are present in a 50mL 3M solution of HCl?

**Chemistry**

How many moles of HCl are present in a 50mL 3M solution of HCl?

**chemistry**

if 5liters of hydrogen iodide gas is bubbled through 2 liters of 0.0275 M lead 2 nitrate solution at STP, how many grams of lead 2 iodide will precipitate out?

**math**

The points A (7,6) and B (2,1) are 3 units and 2 units respectively from the line L and are on the opposite sides of L. Find the coordinates of the point where the interval AB crosses the line L.

**math**

add

**social studies**

about how many peole went through ellis island?

**8th grade science**

when you bring your bicycle to a stop where does he kinetic energy it had go?

**8th grade science**

compare and contrast the effect of a catalyst on a chemical reaction with that of an inhibitor?

**Chem**

Determine mass of KCI created when react 35.7 g of K w/ unlimited amount of CI2

**geometry**

Triangle ABC has the following angle measures. Angle A = 44. Angle B = 4x. Angle C = 2x + 16. Find the measure of angle C.

**Math Help in need of urgent assistance**

A tower casts a 235-foot-long shadow. If the angle of elevation from the tip of the shadow to the top of the tower is 66.3°, how high is the tower? (Round your answer to one decimal place.)

**high school physics static friction**

The system shown below is in equilibrium. Using the fact that block A is placed on a table, has a normal force of 40.2 N and it is not moving, what is the coefficient of static friction on block A? I know you can't answer this but if you have any suggestions: Calculate the...

**high school physics**

I got that the acceleration is 5.6 meters per seconds sqaured because 308.7N/55kg. Therefore, the final velocity is 39.2 meters per second. IS THIS RIGHT? Thanks all for your help!

**high school physics**

Annie rides her snowboard down a hill sloped at 25 degrees. The coefficient of kinetic friction between her and her skies is .15. If her mass is 55 kg, hw fast is she excelerating? Assuming she starts from rest and the equation is v=v+a*t, what is her velocity after 7 seconds?...

**social studies**

what is a veteran?

**Math**

is the indefinite integral of 4x^3sinx^4dx = -cosx^4+c

**Math**

Identify u and du for the integral. 1. The integral of [(cosx)/(sin^(2)x)]dx 2. The integral of sec2xtan2xdx

**11th grade physics**

Carl puts the pedal to the metal and increases her speed as follows: 0 mi/hr at 0 seconds; 10 mi/hr at 1 second; 20 mi/hr at 2 seconds; 30 mi/hr at 3 seconds; and 40 mi/hr at 4 seconds. What is the acceleration of Car;'s car?

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