# Posts by Lala

Total # Posts: 401

Math
A spherical balloon is being inflated. Estimate the rate at which its surface area is changing with respect to the radius when the radius measures 20 cm.

Math
How do you factor 2a^2 - 1 ?

Math
APPLE + ORANGE

Math
Find a polynomial whose zeroes are double the zeroes of P(x)=x^3-7x^2-5x+2.

Financial Mgmt.
Nachman Industries just paid a dividend of D0 = \$1.75. Analysts expect the company's dividend to grow by 30% this year, by 10% in Year 2, and at a constant rate of 5% in Year 3 and thereafter. The required return on this low-risk stock is 9.00%. What is the best estimate ...

english

chemistry
how to prepare and calculate 10%,20% and 30% of phosphoric acid from the concentrated? Meaning that if 10% = 10%phosporic acid+90% of water. let say i want to prepare in 250ml volume.

chem
When saccharin is added to pure water, the freezing point of the resulting solution drops to -5.0C, Calculate the freezing point depression of the aqueous saccharin solution. Note: freezing point of pure water is O.0C... Stuck thanks so much!

Economics
how did the wizard of oz(the movie) relate to the social and economic texture of america?

Science Help
It is a mini one, like a toy car.

Science Help
Please help , I need to make a solar powered car. Where would I be able to get 3v motors ?

Physics
A mountaineer

statistics
test the claim that less than 30% of the students in class own a car at the 0.10 significance level.

Chem
a 4.369g sample of metal is placed in a flask. water is added to the flask and the total volume in the flask is read to be 126.4ml. the mass of the water, flask, and metal is 268.5g. if the mass of the flask is 139.3g and the density of water is 1.000g/ml, the density of the ...

math

math
500

English

AP Physics B
Use the equation m1u1 + m2u2 = m1v1 + m2v2 (mass 1 x its initial velocity + mass 2 x its initial velocity = mass 1 x its final velocity + mass 2 x its final velocity)

1. Find the area 2. Divide it by 4 3. That's how many tulips!

English
Yes, B.

math
1.802752386 x 10 ^11

math
1 pack = 5 doughnuts ? pack = 2587 2587/5 = 517.4 Round it... 518 packs Hope this helped!

Physics
b. First law of motion - All material objects will remain in rest or motion in a straight line unless compelled by an unbalanced force. Its direction is changing = new force.

Steve 3 more questions.
8, 2 0, 4 -1, -2 5, -5 ..Please recheck these

Steve 3 more questions.
18 a Cinema A - 66/12 = 5.5 Cinema B - 28/5 = 5.6 Cinema A is cheaper. b) you save 10 cents! ( 5.6-5.5)

Math
5/13

elementary
Is that really me? I hope you liked the gift from me.

Physics
You are looking for range. Range = Vh x t Vh = 30 m/s t= ? We know d= 50 m, viv = 0 m/s a=9.8 d=vit + 1/2 at ^2 50=0 + 1/2 9.8 t ^2 50 = 4.9 t^2 t = 3.1 s Range = (30) (3.1) = 95.8 m Hope this helped !

Physics
An electric motor is used to pull a 125 kg box across a floor using a long cable. the tension in the cable is 350N and the box accelerates at 1.2m/s^2[forward] for 5.0s. The cable breaks and the box slows down and stops. How far does the box travel from the moment the cable ...

Physics
An electric motor is used to pull a 125 kg box across a floor using a long cable. the tension in the cable is 350N and the box accelerates at 1.2m/s^2[forward] for 5.0s. The cable breaks and the box slows down and stops. How far does the box travel from the moment the cable ...

English 9
easy going - feather ?

science
a piece of metal weighs

math help
did you get the answer for number 14?

math
Point A(8, –10) is reflected over the y-axis. Write the coordinates of A'.

Economics
Use supply and demand economic theory and diagram to explain why the prices of houses has changed so much over the last 3 years. I just need topics to use to write about

Economics
Use supply and demand economic theory and diagram to explain why the prices of houses has changed so much over the last 3 years. I just need topics to use to write about

Physics
The fastest sustained runner is the pronghorn antelope, capable of running at 55 min/h for 1/2 mile. How long does it take this antelope to run the. 1/2 mile?

Physics
when driving at night at a speed of 80 km/hr, a deer suddenly appeared and frozen in your head light. The distance between your car and the deer was 45 meters at the moment you start to break your car as hard as possible in order to avoid the accident Assume that you could ...

Science
secret

algebra
put 1/3 4/6 1/2 5/6 1/6 in order

management
the american federation of labor was formed under the leadership of who?

management
according to -theory, employees compare the inputs and outputs of other employees doing similar jobs. unfavorable comparisons may lead to slacking off on their work or asking a supervisor for either an explanation or a raise.

management
regarding management and leadership, which statement is most accurate?

Chemistry
suppose you wanted to heat a mug of water 250 ml for room temperature 25c to 100c to make a cup of tea. how much energy (in units of calories and joules) would you need form the microwave?

books
thank you! i don't know how to start it. like the first sentence. do i just dive right in or start with something else?

books
In the romantic tragedy, William Shakespeare tells the audience, through the two young lovers, Romeo and Juliet, that love can make you do crazy things that you wouldn’t otherwise do.

books
Romeo and juliet i need a conclusion for my essay the theme is how love can make you do crazy things. so far my 3 paragraphs conclude of 1 romeo climbing to juliets balcony 2 they get marrried 3 they kill themselves now i just need a conclusion

United States History
the least controversial actions of president bush regarding? a. war in iraq b. hurricane katrina c. immigration reform d. economic crisis of 2007-2009 e. "no child left behind" educational program I think the answer is E?

Chemistry
1 mol=molar mass in grams 6.022*10^23=1 mol all should cancel out whats left is answer

math
idk

History
How were the issues of the civil war similar to those of the american revolution.

History
Was the republican party consistent in its policies from the 1850s-1877?

History
civil war ---> triumph of american democracy over european aristocracy. I'm supposed to write a paragraph about this, but I don't understand it.

History
What struggle was there between the president and Congress for dominant political power within the federal government from 1850-1868? I know there was the reconstruction problem and how congress basically took over. What else?

Pre-Cal
I'm trying to put this parabola in standard form which is: (y-k)^2=4p(x-h) The equation is x=(1/12)(y-2)^2 +6 Here is what i have so far: x=(1/12)(y-2)^2 +6 -6 -6 x-6=(1/12)(y-2)^2 *12 *12 Would it be 12x-6 OR 12x-72? thanks

Hi
The interests of the West were satisfied by neither the Jeffersonians nor the Federalists between 1789 and 1815. I'm supposed to write a paragraph about it, but I don't understand what it is asking...

History
Why is the War of 1812 called the second war of independence? I have b/c it was fought against the same country and it made the U.S independent and more respected. I need more, help please!

history
What caused Jeffersonian Democracy to develop?

biology
thanks

biology
what is the different between diet and health.

abstract algebra
Suppose K = {{2,3,4,5,6,7},{2,5,7,8,12},{1,2,3,5,7,9,13,20}}. Find three upper bounds for K in P(N) and three lower bounds. Does K have a least upper bound? Does K has a greatest lower bound?

abstract algebra
Suppose K = {{2,3,4,5,6,7},{2,5,7,8,12},{1,2,3,5,7,9,13,20}}. Find three upper bounds for K in P(N) and three lower bounds. Does K have a least upper bound? Does K has a greatest lower bound?

thanks

physics
A kid fires water horizontally from a squirt gun held 1.6 above the ground. It hits another kid 2.1 away square in the back, at a point 0.91 above the ground.

physics
a large chunk of ice with mass 15 kg falls from a roof 8 m above the ground . find the kinetic energy of the ice when it reaches the ground

science
i dont know

Physics
What happens to the internal energy of an ideal gas when it is heated from 0C to 4C? a. increases b. decreases c. change in number of atoms d. increase in volume of substance

physics
a. increases b. decreases c. change in number of atoms d. increase in volume of substance

physics
What happens to the internal energy of an ideal gas when it is heated from 0C to 4C?

Physics
What happens to the internal energy of an ideal gas when it is heated from 0C to 4C?

Literacy
17. Scholarly journal articles are written: A. For a general audience B. By lower division college students C. By reporters D. By experts in a subject field

Physics
a = F/m = 15N/45kg = 0.33 m/s^2 , vf^2 = vi^2 + 2ad vf^2 = 3^2 + 2(0.33)(11) vf^2 = 16.3 vf = 4m/s is that correct?

Physics
A 45kg sled is coasting with constant velocity at 3.0m/s over a patch of smooth and level ice. It enters a very rough section of ice that is 11m long in which the force of friction is 15N. With what speed will the sled emerge from the rough ice?

World
Will the world end on december 2012? I don't think it will

To Annie: Re: Penn Foster
Examination Number #059839RR

calculus
what is the domain of f if f(x)=2cos(4x+pie)-1

algebra
maybe t divided by 30 and 30 times t...?

algebra
maybe t divided by 30 and 30 times t

math
20. A scale drawing of a town park has a scale of 5 in : 100 ft. What is the actual length of each foot in the drawing? (1 point)

calculus
a boat leaves a dock at 2:00 pm and travels due south at a speed of 20 km/h. Another boat has been heading due east at 15 km/h and reaches the same dock at 3:00 pm. at what time were the two boats closest together

English - Drawing conclusions
jon is tony cousin. Tony is hanks newphew. How are hank and jon related?

science

Physics
An astronaut in outer space pushes himself away from his spaceship. About how far does the astronaut go before stopping? What does the astronaut have to do to stop himself?

Physics
The coefficient of static friction between the m = 2.95-kg crate and the 35.0° incline is 0.345. What minimum force must be applied to the crate perpendicular to the incline to prevent the crate from sliding down the incline?

physics
1 A block of mass mb sits atop a at wooden plank of mass mp on a plane inclined an angle theta with respect to thehorizontal. The two are supported near the bottom of the plane by a spring of spring constant k that is in contactwith the plank but not the block. If the coecient...

English- The scarlet Letter
what rhetorical device does hawthrone use to reveal hester prynne's past? What do we learn about her?

Physics
A shell of a gun has a initial speed of 1700 m/s at initial inclination of 55◦ above the horiztontal. Ignore air resistance and other effects. a) what is the maximum height? B) what is the total time of the shell's flight? c) how far away did the shell hit?

pre-algebra
When a baseball is hit it comes in contact with the bat for 0.001 seconds.Write that as a negative exponet?

penn foster world history
can somebody plz help me with penn foster exams 007679rr,007680rr,007681rr and 007682rr plz help me.....

United States History
Okay, that is your view. but what was jeffersions and why?

United States History
What is Jeffersinans position on funding debts, and justification? His position is that each state should be responsible for its own debt. But I don't know why, or if that is right.

Physics
how can the equilibrant of two or more concurrent forces be found

Physics
How does the resultant of two vectors change as the angle between the two vectors increase?

Physics
How does the resultant of two vectors change as the angle between the two vectors increase?

Enghlish
What is the simple subject in this sentence: Do all those television ads feature talking pandas?

physical science
a sled and rider with a combined weight 60kg are at rest on the top of a hill 12m high. what is their total energy at the top of the hill?

chemistry
Suppose this block is dropped into 25.0ml of water. What will be the new volume reading? Help me please . I dot get it!!

Math

Math
I do ont get math at all

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