# Posts by Lala

Total # Posts: 390

**u.s history**

in what movement does participate james weldon johnson and zora neale

*June 3, 2011*

**Physics**

a convex mirror has a focal length of -0.90m. An object with a height of 2.5m from the mirror. Could u help me please!! :D

*May 23, 2011*

**physics**

explain body is thrown vertically downward?

*May 22, 2011*

**Chemistry**

thankkkkk youuuuu it was right!!!:)

*May 2, 2011*

**Chemistry**

What is the unit cell of calcium sulfide? anti-fluorite cesium cholride diamond fluorite graphite rutile sodium chloride zinc blende

*May 2, 2011*

**world history**

why was the congo free state not able to make a profit in the early years?

*April 24, 2011*

**personal developmetn 20 Chapter 1**

establishment

*April 13, 2011*

**math**

what should you call a man with a clamp

*March 28, 2011*

**Matha**

There are 6 girls and 5 boys. The teachet chooses 2 students random. What is thw probability of selecting a girl then a boy?

*March 24, 2011*

**Math**

You toss tails and roll an even number ( when you toss a coin and roll a number cube) Find the probability. I thought It was 1/3 but I think that is wrong.

*March 23, 2011*

**World History**

i don't understand what it is asking

*March 10, 2011*

**World History**

what did the fascists and natizes advocate and how did they govern their states? (20th century)

*March 10, 2011*

**World History**

What events led up to the cold war? I have this so far please tell me what i need to add, I need real events... The u.s and britan tried to counter russia's manipulation of eastern Europe. In 1945 the U.s developed the atomic bomb. in 1947, the u.s proclaimed the marshall ...

*March 10, 2011*

**French**

google translate.

*March 9, 2011*

**Math- Algebra II**

SOLVE.. Please show the steps so I'll understand it 8^x-2=(1/16)

*March 9, 2011*

**Physics**

Suppose a crate of mass 2.8 kg is placed on the plank in the figure below at a distance 5.1 m from the left end. Find the forces exerted by the two supports on the plank. (The mass of the plank is 12.0 kg.) Left Support N Right Support N The plank set on two pivots one at 3.0m...

*March 6, 2011*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...

*February 24, 2011*

**college physics**

Two cars of equal mass are traveling as shown in the figure below just before undergoing a collision. Before the collision, one of the cars has a speed of 19 m/s along +x, and the other has a speed of 31 m/s along +y. The cars lock bumpers and then slide away together after ...

*February 24, 2011*

**Math**

Simlplify 1/(2x) - 3/(x+6)

*February 22, 2011*

**Math**

Factorize (x+2)^2 + x^2 +6x + 8

*February 22, 2011*

**SmartPhone Help**

no it wouldn't does the blackberry torch come from at&t or t-mobile? trying check the sites like (the official carrier's site and see if they have the blackberry torch. AT&T T-Mobile Verizon Wireless Sprint those are the most popular cellphone cariers.

*February 21, 2011*

**SmartPhone Help**

carrier means like (t-mobile, verizon) what company?

*February 21, 2011*

**Cuban culture**

I tried googling this and I can't find anything. What makes Batidos (Cuban milkshake) special in Cuba?

*February 21, 2011*

**math**

why did they try to build a house on orgo's head?

*February 17, 2011*

**Math- Algebra II**

Thank you so much!

*February 16, 2011*

**Math- Algebra II**

Please check if I did this right... √(2x+1)+7= 3 -7 -7 √(2x+1)= -4 Square everything √(2x+1)^2= -4^2 2x+1=16 -1 -1 2x=15 divide by 2 on both sides x=7.5 CHECK: (Plug it in) √(2(7.5)+1)+7= 3 √(16)+7= 3 4+7=3 11 doesn't equal 3 so the answer is ...

*February 16, 2011*

**geometry**

how do you find the lenght of the midsegment of a trapezoid when one base equals 21 and the other 17 ?

*February 15, 2011*

**business calculus**

composite funtions

*February 12, 2011*

**stoichiometry**

Lick balls.

*February 9, 2011*

**physics**

A clump of soft clay is thrown horizontally from 30.63 m above the ground with a speed of 30.0 m/s. Where is the clay after 3.8 s? Assume it sticks in place when it hits the ground

*January 27, 2011*

**Math**

Simplify 1/2x-3/x+6

*January 25, 2011*

**answer**

0 (4), 1(5)

*January 20, 2011*

**physics**

20 newtons

*January 16, 2011*

**Math**

thanks for the help

*January 12, 2011*

**Math**

y=-2x+1

*January 12, 2011*

**Math**

y=2/3x-1

*January 12, 2011*

**math**

eggs spear a mint

*January 12, 2011*

**math**

What were the headlines after a mad scientist trained two eggs to attack a candy store with sharp sticks?

*January 12, 2011*

**math graphing the y-intercept**

solve for y set equation equal to each other solve for x use "x'' value to fo y

*January 12, 2011*

**Thermodynamic**

274.2kj

*January 10, 2011*

**Math**

50= A+S 2s+3a= $135 s= -a+50 2(-a+50) + 3a= 135 Now solve for a then plug in what you get for a and solve for s

*January 9, 2011*

**World History**

1450-1750 C.E With the Asian Trading Network.

*January 9, 2011*

**World History**

How did the Europeans establish and maintain their trading empires with Asia? ? idk help

*January 9, 2011*

**Science**

Temperature

*January 9, 2011*

**Chemistry**

The liquid to gas phase transformation (evaporation) is an endothermic process. It requires heat to be accomplished.

*January 9, 2011*

**Probability**

urn1 contains 3 red chips and 1 white chip. urn2 contains 2 red chips and 2 white chips. 1 chip is drawn from each urn and transeferred to the other urn. then a chip is drawn from the first urn. what is the probability that the chip ultimately drawn from urn1 is red

*January 6, 2011*

**HELP IN ENGLISH**

Would the fact that the title is called Bloom because the girl in the book blooms open her new personality be a symbol or irony?

*January 5, 2011*

**English**

Would the fact that the title is called Bloom because the girl in the book blooms open her new personality be a symbol or irony?

*January 5, 2011*

**English**

so it would be Magic realism, USA?

*January 5, 2011*

**English**

The book is Bloom by Elizabeth Scott and the copyright date is May 2007

*January 5, 2011*

**English**

I'm writing a Precis of a book and it asks to to put the literary period and country I tried to look but I still don't really understand. Thanks

*January 5, 2011*

**math**

try looking over old notes, and memorizing formulas that are commonly used.

*January 5, 2011*

**algebra**

To solve the inequality -1/2 k is greater then or equal to -5, Danny multiplied both sides by the reciprocal of -1/2 . His solution was k is greater then or equal to 10.What mistake did he make? Danny checked his solution, but his check did not let him know that he had made an...

*December 9, 2010*

**World History**

brazil they didn't have forced labor becuase the afican's did it. whereas in Portugal there was much forced labor

*December 8, 2010*

**World History**

How did the Portuguese experience in Brazil differ from the Spanish experience in Latin America? ... I don't really have any idea HELP please.

*December 8, 2010*

**World History**

THANK YOU.

*December 8, 2010*

**World History**

By building colonies?

*December 8, 2010*

**World History**

how did the caribbean serve as a model for the spanish empire?

*December 8, 2010*

**World History**

What Iberian institutions were transplanted to the Americas?

*December 8, 2010*

**English**

The Swing by robert louis stevensen

*November 25, 2010*

**US History**

Why do you think freedom and independence were so important to the colonists?

*November 19, 2010*

**history**

Why was the destruction of the buffalo significant to the lives of Native Americans on the Plain?

*November 9, 2010*

**history**

thanks

*November 9, 2010*

**history**

assimilation into American culture

*November 9, 2010*

**geometry**

plug in whatever points they gave you into the midpoint formula

*November 8, 2010*

**Chemistry**

What is the difference between and orbit and an electron orbital?

*November 8, 2010*

**World History**

How did religion and trade connect Africa to a larger world; with what results?

*November 8, 2010*

**World History**

What factors contributed to Islam's spread to south and southeast Asia?

*November 8, 2010*

**Spanish 1**

Hey the person above stole my name!

*November 8, 2010*

**Spanish 1**

12.d 14.c

*November 8, 2010*

**U.S. Government**

how can a young citizen become active in politics?

*November 5, 2010*

**English**

What is an essay-style question, and how would I write one about a book I read? I don't have to answer the question

*November 2, 2010*

**Math**

What is the answer and how the steps to solving y-15/32=2 6/7

*November 1, 2010*

**math**

kelly subtracted 2.3 from 20 and got 17.7 explain why this answer is reasonable

*October 26, 2010*

**grammar**

men fish gulf of mexico

*October 10, 2010*

**chemistry**

If a mole of hydrogen gas (H2) contains 6.02 x 10^23 molecules, how many molecules are there in 10.0 moles of hydrogen gas? Answer 60.20 x 10^23 molecules 6.0 x 10^23 molecules 6.02 x 10^20 molecules 6.02 x 10^24 molecules None of these is correct. would it be 6.02x10^24 or ...

*September 28, 2010*

**ap history**

when did american economic institutions began to be shaped in a capitalist framework? A.during the colonial period B.during the federalist era C.during the jacksonian era D.during the civil war E.during the late 1890s

*September 26, 2010*

**science**

a nickel is about 2 millimeters thick,or 2/1,000 of a metter. how many nanometers is?

*September 20, 2010*

**science**

i don't see it

*September 20, 2010*

**Maths**

A box with no top is to be built by taking a 6'' - by - 10'' sheet of cardboard and cutting x - in. squares out of each corner and folding up the sides. Find the value of x that maximizes the volume of the box.

*September 19, 2010*

**math**

I need real life example word problems using to ngative interjers.

*August 31, 2010*

**Calculus**

X2-7x-12/x-2

*August 9, 2010*

**Individual Income**

A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A

*June 30, 2010*

**Calculus**

What is the derivative and second derivative of 3x/(x^2-4)

*June 22, 2010*

**Vectors**

The point P(-1,0,1) is reflected in plane y-z=0 and has P' as its image. Determine the coordinated of point P'

*June 20, 2010*

**dress making**

For cutting dress fabric, it's recommended that you use

*June 1, 2010*

**chemistry**

How can one create an experiment that will deteremine the Ksp of a solid like Ca(OH)2

*May 29, 2010*

**Chemistry**

So far i have deltaH= 20g x 4.18 j/g deg C x 80 deg = 6.688KJ AND DELTA H= 1.11mol x 40.8 KJ/Mol = 45.3 kj but i don't know what to do next :(

*April 27, 2010*

**Chemistry**

If 55.0 kJ of heat are added to 20.0 g of water at 20oC, what is the final temperature of the system?

*April 27, 2010*

**chemistry**

A thimbleful of water at 100 deg C has a higher temp than a swimming pool full of water at 20 deg C, but the pool has more thermal energy than the thimble. Explain why this is possbile?

*April 26, 2010*

**Chemistry**

Some polymers are flexible when pulled one way but not another(example:milkbags). Can someone please explain why this happens?

*April 19, 2010*

**calculus**

Two roads intersect at an angle of 48º. A car and truck collide at the intersection, and then leave the scene of the accident. The car travels at 100 km h down one road, while the truck goes 80 km h down the other road. Fifteen minutes after the accident, a police ...

*April 15, 2010*

**calculus**

Three ships are at points P, Q, and R such that PQ=2km PR=7 km, and <QPR=142. What is the distance between Q and R, to two decimal places.

*April 15, 2010*

**Calculus**

A certain radioactive material decays exponetially. The percent, P, of the material left after t years is given by P(t)= 100(1.2)^-t a)Determine the half life of the substance

*April 13, 2010*

**Calculus**

How can i find the ln of both sides of the equation? 6=6e^3x and O.2= e^-kt

*April 13, 2010*

**Calculus**

How do i find the second derivative of f(x)= tan(1-x)^1/2

*April 13, 2010*

**Calculus**

How can i find f''(x) of the function f(x)= 2(cosx)(sec^2x)

*April 11, 2010*

**Calculus**

A fence is 1.5m high and is 1m from a wall. A ladder must start from the ground, touch the top of the fence, and rest somewhere on the wall. Calculate the minimun lenght of the ladder. I drew a diagram and i ended up with a right angle triangle. i made the hypotenuse the ...

*April 10, 2010*

**physics**

6. If you applied a force of 200N to push a box along the floor at a constant velocity, what is the net force on the box? What is the force of friction on the box?

*April 4, 2010*