Saturday

December 3, 2016
Total # Posts: 1,316

**algebra**

Find all numbers for which the rational expression is underfined: r^2-4r?r^2-4r

*November 9, 2011*

**physics**

A cart connected to a spring oscillates according to the following position equation: x = 0.20m cos (8 t) What is the period of this oscillation? What is the cart's velocity after 4 seconds?

*November 8, 2011*

**Math**

solve for 9x-21y=28 -9x+21y=21 in elimination method

*November 8, 2011*

**ELA**

V/CV pattern?

*November 7, 2011*

**ELA**

V/CV PATTERN MEANS LONG AND VC/V PATTERN MEANS SHORT

*November 7, 2011*

**ELA**

Sort each spelling word by determining if it follows the V/CV pattern or the VC/V pattern. Write each spelling word in the correct column. Does the word tyrant go in the V/CV pattern-long or the VC/V pattern-short? V/CV PATTERN MEANS LONG AND VC?V PATTERN MEANS SHORT

*November 7, 2011*

**English**

You have the correct syllables for the traditional Haiku form. And you have written about a scientific topic so I think you have covered your bases!

*November 2, 2011*

**Physics**

A solid disk rotates in the horizontal plane at an angular velocity of 0.036 rad/s with respect to an axis perpendicular to the disk at its center. The moment of inertia of the disk is 0.17 kg · m2. From above, sand is dropped straight down onto this rotating disk, so ...

*November 1, 2011*

**physics**

A diver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. He then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. The net external torque acting on the diver is zero. What is his moment of ...

*November 1, 2011*

**physics**

Two skaters, one with mass 62 kg and the other with mass 45 kg, stand on an ice rink holding a pole of length 10 m and negligible mass. Starting from the ends of the pole, the skaters pull themselves along the pole until they meet. How far does the 45 kg skater move?

*November 1, 2011*

**EnglishCheck**

#1. is wrong, the correct answer is lend.

*October 30, 2011*

**Discrete Math**

Of the nine (Ann, Ben, Cal, Dot, Ed, Fran, Gail, Hal and Ida), five of them stand in a row for a picture, how many ways can this be done if Ed and Gail are standing next to each other in the picture?

*October 27, 2011*

**Science**

Organisms that maintain a constant body temperature rely on the heat produced by cells. Where does this heat come from? A) Special metabolic pathways exist just for the production of heat. B) Mitochondria produce heat in the form of ATP. C) Plants store up heat as they perform...

*October 26, 2011*

**Science**

i meant to say just "one" more

*October 26, 2011*

**Science**

yeh those are the two i narrowed it down to. You are very helpful though can I just ask you 1 more please. I think it's choice C, but I don't know really. Thank you! Organisms that maintain a constant body temperature rely on the heat produced by cells. Where does this...

*October 26, 2011*

**Science**

Thank you so much for replying, so the answer is chloroplasts?

*October 26, 2011*

**Science**

Is the answer D? Thank you The earliest atmosphere of Earth is not believed to have contained oxygen. Which cellular component would not have been useful at that time? A) chloroplast B) nucleus C) plasma membrane D) mitochondrion

*October 26, 2011*

**Social Studies **

In what building does the President of the United States serve?

*October 26, 2011*

**SOCIAL STUDIES **

U.S Capitol building?

*October 26, 2011*

**SOCIAL STUDIES **

Thanks. How about this? In what building does the Congress serve? What are they asking on this question?

*October 26, 2011*

**SOCIAL STUDIES **

Licoln,Nebraska?

*October 26, 2011*

**SOCIAL STUDIES **

What state has a southwestern border with Colorado and an eastern border with Iowa?

*October 26, 2011*

**Physics**

Nice thank you! This worked perfectly!

*October 26, 2011*

**SOCIAL STUDIES**

Im not sure im trying to find it on google and can't find the right one

*October 25, 2011*

**SOCIAL STUDIES**

Earthquakes struck New Madrid,Missouri during the winter of 1811-1812 and changed the course of what?

*October 25, 2011*

**Psychology**

resembles a U-shaped curve

*October 20, 2011*

**geometry**

one a number line,the coordinates of A,B,C,and D are -5,-1,3,and 7 respectively. Find the length of the two segments and tell whether they are congruent AB and CD ,CA and DB,and BC and AD?

*October 6, 2011*

**programming**

what are application- level requirements

*October 2, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(1...

*September 29, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(1...

*September 28, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(1...

*September 28, 2011*

**Calculus**

Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^2)dx by subdividing the interval into 8 parts, using (i) the left Riemann sum: INT from 0 to 1 2/(1+x^2)dx (ii) the right Riemann sum: INT from 0 to 1 2/(1+x^2)dx (iii) the trapezoid rule INT from 0 to 1 2/(...

*September 28, 2011*

**MATH**

i think this is the answer 85,700,038[i'm not sure]

*September 28, 2011*

**physics**

a lawn mower is pushed up a 15degree slope by a 20lb force. Find the component acting parallel to the slope

*September 26, 2011*

**American Gov**

Under Article V of the U.S. Constitution there are two ways to propose an amendment to the Constitution: by a two-thirds (2/3) vote of both houses of Congress, or by a national convention called by Congress at the request of two-thirds (2/3) of the state legislatures. True or ...

*September 23, 2011*

**American Gov**

Was The Virginia Plan and the New Jersey Plan were substantially the same. True or False

*September 23, 2011*

**Calculus**

Can someone help me to evaluate these two integrals? INT dx/(x^2*sqrt(x^2-25)) and INT (from 0 to 1) -5*sqrt(x^2+1) dx

*September 22, 2011*

**algebra**

how do you solve 3/4 *w*-7 w= 1 1/3

*September 21, 2011*

**algebra**

how do you solve 2 1/12*-7

*September 21, 2011*

**geometry**

how do u circumscribe and inscribe a hexagoneabout a 2inch circle?

*September 21, 2011*

**math**

if you have a rectangle using 24 squares tiles and if you add the length and the width of the rectangle together and get11. what is the length and width of your rectangle?

*September 14, 2011*

**American Gov**

I didn't mean to put this on twice sorry!!

*September 13, 2011*

**American Gov**

Capitalism is an economic system based on public ownership of property and a command economy True or False???

*September 13, 2011*

**physics**

The speed of a bobsled is increasing because it has an acceleration of 2.3 m/s2. At a given instant in time, the forces resisting the motion, including kinetic friction and air resistance, total 450 N. The mass of the bobsled and its riders is 230 kg.

*September 11, 2011*

**physics**

In the amusement park ride known as Magic Mountain Superman, powerful magnets accelerate a car and its riders from rest to 55 m/s (around 120 mi/h) in a time of 6.1 s. The mass of the car and riders is 5000 kg. Find the average net force exerted on the car and riders by the ...

*September 11, 2011*

**Physical Science**

A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?

*September 11, 2011*

**Physical Science**

A 1000-kg car moving at 80 km/h collides head on with a 100-kg car moving west at 40km/h, and the two cars stick together. Which way does the wreckage move and with what initial speed?

*September 11, 2011*

**Physical Science**

A 40-kg skater moving at 4 m/s overtakes a 60-kg skater moving at 2 m/s in the same direction and collides with her. The two skaters stick together. What is their final speed?

*September 11, 2011*

**Physical Science**

I don't understand how to work it?

*September 11, 2011*

**Physical Science**

A boy throws a 4-kg pumpkin at 8 m/s to a 40-kg girl on roller skates, who catches it. At what speed does the girl then move backward?

*September 11, 2011*

**Physical Science**

A force of 10 N is used to lift a 600-g ball from the ground to a height of 1.8 m, when it is let go. What is the speed of the ball when it is let go??

*September 11, 2011*

**Physics**

A rocket starts from rest and moves upward from the surface of the earth. For the first 10s of its motion, the vertical acceleration of the rocket is given by a_y =( 2.70m/s^3)t, where the +y-direction is upward. 1) What is the height of the rocket above the surface of the ...

*September 10, 2011*

**Finance**

You are considering the purchase of an industrial warehouse. The purchase price is $1 million. You expect to hold the property for five years. You have decided to finance the acquisition with the $700,000 loan, 10 percent interest rate, 30- year term, and annual interest-only ...

*August 30, 2011*

**ka**

but todays august 25,2011 :P

*August 25, 2011*

**ka**

ohhh withoutnumbers whoops

*August 25, 2011*

**ka**

5 28 11

*August 25, 2011*

**Precal**

THAAAAAAANK YOOOOOOU.

*August 25, 2011*

**Precalculus**

find any intercepts of the graph of the given equation. determine whether the graph of the equation possesses symmetry with respect to the x-axis, y-axis, or orgin |x|+|y|=4

*August 25, 2011*

**Precalculus **

find any intercepts of the graph of the given equation. determine whether the graph of the equation possesses symmetry with respect to the x-axis, y-axis, or orgin y=x^2-2x-2

*August 25, 2011*

**Precalculus **

thank you damon! that was exactly what i was looking for, by the way it's 4:32 am here and i've been searching for that answer for hours...

*August 25, 2011*

**Precalculus **

find any intercepts of the graph of the given equation. determine whether the graph of the equation possesses symmetry with respect to the x-axis, y-axis, or orgin y=x^2-2x-2

*August 25, 2011*

**Health **

Why is support important for situations involving abuse?

*August 24, 2011*

**Health education**

Describe why people tend to turn their backs and tell themselves there is nothing wrong when addressing physical and emotional abuse in relationships. Discuss the importance of support in your answer.

*August 23, 2011*

**Health education**

I didn't know which subject it is...

*August 23, 2011*

**Random Question**

Describe why people tend to turn their backs and tell themselves there is nothing wrong when addressing physical and emotional abuse in relationships. Discuss the importance of support in your answer.

*August 23, 2011*

**Random Question**

Explain some consequences of falling 'in love' with someone who acts in an improper manner.

*August 22, 2011*

**English**

is it physicak and emotional abuse?? and for 2, is it that she may be really smart in bookthings but shes not smart when itr comes to relationships ?

*August 22, 2011*

**math**

I tried that and it said that it was the wrong answer.

*August 21, 2011*

**math**

A ramp 10 feet in length rises to a loading Platform that is 4 feet off the ground. What is the angle of elevation of the ramp in degrees? Do I use the law of cosines? When I do though I'm getting a little confused what to do.

*August 21, 2011*

**Math**

A ramp 10 feet in length rises to a loading Platform that is 4 feet off the ground. What is the angle of elevation of the ramp in degrees? Do I use the law of cosines? When I do though I'm getting a little confused what to do.

*August 20, 2011*

**math**

solve using add. method 4x=-6+5y 8x+4y=-3

*July 18, 2011*

**Stats**

a raw score on a particular intelligence test is known to be approximately normally distributed in a population of 4th graders, with a mean of 95 and variance 81. which score has the property that there are 15% of scores in the population that are above it?

*July 15, 2011*

**science (universe)**

describe the big bang theory about the origin of the universe.

*June 27, 2011*

**Law**

1. why is employment based on contract law? 2. where did the idea of 'circle sentencing come from?

*June 24, 2011*

**another law question**

where did the idea of 'circle sentencing' come from?

*June 18, 2011*

**law**

Why is employment based on contract law?

*June 18, 2011*

**Commerce**

Why is employment based on contract law?

*June 15, 2011*

**geography**

How does urbanization affect culture? (is it because where they settle they also see other cultures and bring there cultures for others to see?)

*June 13, 2011*

**Elementary Statistics**

5*4*3= 60

*June 8, 2011*

**Math**

If $ 2500 is invested in an account that pays interest compounded continuously, how long will it take to grow to $ 5000 at 3%? Round to the nearest tenth

*June 8, 2011*

**Math puzzle**

The Answer you seek is "bridge" it is asking you to use the old style od texting on a standerd cell phone(no key board) 2 (2 times)= B Etc. Etc,

*June 5, 2011*

**English**

is a critical response of a poem the same as a poem analysis? if not what is a critical response?

*May 29, 2011*

**Physics I**

A car can decelerate at -4.40 m/s2 without skidding when coming to rest on a level road. What would be the magnitude of its deceleration if the road were inclined at 12° uphill? Assume the same static friction coefficient.

*May 25, 2011*

**government**

A colony of a country that followed mercantilism during the 17th century would NOT be encouraged to develop __________. A. farming B. fishing C. slavery D. its own form of government

*May 18, 2011*

**English (Robert Frost)**

Can someone please make a literal meaning for each line in Robert Frost's Poem 'Out, Out'? (For lines 27-34 only) and techniques used? So. The hand was gone already. The doctor put him in the dark of ether. He lay and puffed his lips out with his breath. And then...

*May 15, 2011*

**History **

I need to write a one page extended response for the supporters of the Vietnam War. I was wondering if you could give me an idea of how to start it and a "guideline" becaseu I am really desperate

*May 12, 2011*

**Physics**

A round body of mass M, radius R, and moment of inertia I= BMR^2 is rolling without slipping. Its kinetic energy can be decomposed into the energy of its center of mass motion (translation) and the enrgy of rotation about its center of mass. The fractions of the body's ...

*May 11, 2011*

**Physics**

A round body of mass M, radius R, and moment of inertia I= BMR^2 is rolling without slipping. Its kinetic energy can be decomposed into the energy of its center of mass motion (translation) and the enrgy of rotation about its center of mass. The fractions of the body's ...

*May 10, 2011*

**Physics**

A round body of mass M, radius R, and moment of inertia I= BMR^2 is rolling without slipping. Its kinetic energy can be decomposed into the energy of its center of mass motion (translation) and the enrgy of rotation about its center of mass. The fractions of the body's ...

*May 10, 2011*

**Algebra**

i don't know how to slove the/A system by using substitution 3x+4Y=9 y=x-3

*May 10, 2011*

**Geometry**

You have a small graduated cylinder with maximum capacity of 250ml. All measuring marks have been worn off except the 50ml, the 150ml, and the 250ml marks. You have a second larger container(size not specified)that is unmarked. It is possible to put 125ml into the large ...

*May 9, 2011*

**Physic**

Just an instant before reaching the very bottom of a semicircular section of a roller coaster ride, the automatic emergency brake inadvertently goes on. Assume the car has a total mass of 850 kg, the radius of that section of the track is 53.0 m, and the car entered the bottom...

*May 8, 2011*

**Algebra**

Peter painted 1/3 of a room while Joe painted 2/5 of the same room. It then took Peter 1 hour, 40 minutes to finish painting the remainder of the room by himself. In how many hours could Peter have painted the entire room by himself? Express answer as a mixed number.

*May 6, 2011*

**math**

Write 7 3/5 as an improper fraction

*May 5, 2011*

**science **

Evolution is the theory and natural selection is the process. Explain what this might mean. How can environmental factors determine a feature in a species?

*May 3, 2011*

**science (Genetics and Evolution)**

What contains DNA? Where is DNA found? What is the difference between phenotype and genotype?

*May 3, 2011*

**Calculus**

To answer the question you would be looking at the point in the interval 0 < x < 10 which the area's totaled up is greatest. The point at which the area is greatest is the interval in which the area is 20, if you span it all the way towards x=10, you'd have (20-6...

*May 2, 2011*

**Computers**

How does a search engine work? List the four main parts of an e-mail header.

*May 2, 2011*

**Algebra**

1. 12 + 8a + 4a^2 2. Factorise -5x^2 + 27x - 10 Please show me full working out. Thank you!

*May 1, 2011*

**Math**

What is the number of units in the distance from the origin to the point (-8,6) in a coordinate system?

*May 1, 2011*