Monday

January 23, 2017
Total # Posts: 1,146

**Calculus**

alright. i need to write a definite integral for the volume and evaluate the integral for the region bounded by y=x^2, y=0, and x=1 revolved about the a) x-axis, b) the y-axis, c) x=2, and d) y=-2. HELP! Lets do the x=2 axis. dV= pi rh dr where r is radius, h is height. r= x-1...

*April 1, 2007*

**MATH!**

Finding Common Demoninators in fractions. 1) 2 4 -- - --- x^2-16 x^2+x-12 2) x-3 x+3 ---- + ------ x^2+2x-8 x^2+7x+12 Can ANYONE help me with these. I cant figure out how to get the DEMONINATORS THE SAME!? Use brackets to write these kind of fractions, the text editor of this ...

*April 1, 2007*

**Physical Science**

Nuclear Fusion

*March 29, 2007*

**Chemistry**

I have this awful problem due tomorrow; if anyone can help it would be much appreciated. Most introductory chemistry texts provide a formula for the freezing point depression/boiling point of elevations: delta-T(f,b)= K(f,b) * m (m = molality) In fact, these are derived ...

*March 27, 2007*

**MATH!**

5x^2-7xy+12y^2 _______________(OVER) x^2+xy-20y^2 Please if anyone can help in the steps to answer this...i would be greatful.=) What is a reflex angle Are you sure you copied the question correctly? If the top is 5x^2-17xy-12y^2 it works out really easily. The way it stands, ...

*March 26, 2007*

**MATH!**

The ratio of two supplementary angles is 2:7. What is the measure of the smaller angle? Can anyone help me with this--i don't understand it. The angles add to 180, so 2x + 7x=180 solve for x, then the smaller angle is 2x Supplemental means adds to 180 degrees. THANK YOU ...

*March 25, 2007*

**MATH!!!**

(1)TOP Electronics is a small business with five employees.The mean(avergae) weekly salary for the five emplyees is $360. If the weekly salaries of four of the employees are $340,$340,$345, and $425, what is the salary if the fifth employee? ___________________________________...

*March 11, 2007*

**MATH!!**

(1)At the begining of her math class, Mrs. Reno gives a warm-up problem. She says, "I am thinking of a number such that 6 is less than the product of 7 and this number is 85." Which number is she thinking of? A-11 B-84 C-13 D-637 ___________________________________ (...

*March 11, 2007*

**science**

what happens to the power of an electric circuit if the resistance is decreased?? explain?? i know that as the power increases the resistance decreases why is that?? Power = voltage^2 / resistance. Think again about what you "know". Resistance does not decrease with ...

*March 7, 2007*

**science**

why do lightbulbs burn out?? i know it has somethign to do with the filament but that's it thanks? The filament simply burn in two and there is no longer a physical connection "inside" the bulb.

*March 7, 2007*

**Science**

How can the voltage change in relation to current if the resistance is constant. This is suppose to be using Ohm's law. see above.

*March 7, 2007*

**science**

Why does the filament glow more brightly as the electric current in a lightbulb is increased? The glow is dependent on two things: Spectral output, and intensity. Current makes the temperature hotter, and so the spectrum is shifted from red to violet, which is more energetic. ...

*March 7, 2007*

**science**

why is there zero current when a light bulb burns out? With the filamnt burned out there is no connection and no connection means no power is going through the wires; thus, no current.

*March 7, 2007*

**Math!**

Factoring Completely! 13b^2-13 I got (13b-13)(1b-1). On my test my teacher said it was party wrong.And she underlined the two Thirteen's i had in my answer. And i don't understand why!? _______________________________________ Also on another one.The problem is.. 2d^2+...

*March 1, 2007*

**Math!**

In the equation A=p+prt, t is equilvalent to... (1)A-pr (3)A - p _________ ___ p pr (2)A-p (4)A - pr ________ ___ pr p t is time. Your answers are difficult to interpret. Solving for t, t = (A-p)/pr

*February 27, 2007*

**MATH!!!PLEASE HELP!!**

A wall is supported by a brace 10 feet long. If one end of the brace is placed 6 feet from the base of the wall, how many feet up the wall does the brace reach? Think of the right triangle frmed by the wall, the floor and the brace, and use the Pythagorean theorem. The brace ...

*February 27, 2007*

**eth 125**

opposing viewpoints on bilingualism in politics and education 2010- in the google search helped me find a site thatsupplied numerous links for my research.

*February 15, 2007*

**Math**

How do I set this problem up and solve it. Mrs. Muniz's algebra class was collecting money for a party. The class decided that each student should give the same amount of money. They collected a total of $9.61. If everyone used 5 coins, how many nickels were collected 961 ...

*February 15, 2007*

**Science/Math**

A radio wave has a frequency of5,000,000 Hz. Write this number in scientific notation. ????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????? This is not the right answer so hurry up as soon as possible ...

*February 12, 2007*

**music**

who invented music. There is no one who is known for inventing music. I imagine the cave men beat sticks on a rock and enjoyed the sound... They probably also blew on a reed and found it made noise. Mama cave women probably crooned to babies and found it put them to sleep. I ...

*January 29, 2007*

**math**

how do i solve two step equations? Do you mean two equations in two unknowns? The method of substitution is one way. There is a good tutorial here: http://www.themathpage.com/alg/simultaneous-equations.htm

*January 18, 2007*

**spelling**

for nail:hammer:: screw: screwdriver

*January 16, 2007*

**Chemistry**

Are the Carbon atoms full though. I don't know. My teacher was saying something about putting the atoms with dots on a diagonal and she said something about using arrows to indicate the "CC" bonds. ??????????????????????????????????????? I don't understand ...

*January 8, 2007*

**Chemistry**

That worked out perfectly! I understand where you're going now! THANK YOU SO MUCH!!! Use the electron-dot symbols to show how the bonding (covalent or ionic) takes place. Use as many of each atom as needed for: 1. Carbon and Hydrogen 2.Silicon and Fluorine try combinig the...

*January 8, 2007*

**Algebra**

For what value(s) of b will x^2 + bx + 3 have exactly one root? I'm rather new at this but wouldn't b=2*sqrt(3) give (x+sqrt3)2 as factors and that would give one root? Check my thinking. for a quadratic equation to have exactly one root, the discriminat must be zero i...

*December 20, 2006*

**possessive nouns**

The banana belongs to the the chimp

*December 12, 2006*

**the big idea of energy**

i hate everyone on his website becauce u r all dumb someone HELP ME

*December 5, 2006*

**the big idea of energy**

thank u i had no idea what it meant by the big idea of energy. i am from england. thank you who explained it so well fab.

*December 5, 2006*

**chemistry**

Why do beryllium and fluorine combine in a 1:2 ratio? use page 194 in your textbook. Be is in group 2 (IIA) and has two electrons in its outer shell which it wants to give away. Flourine is in group 17 (VIIA) and has seven electrons. It needs one more to fill its outside shell...

*December 3, 2006*

**fractions**

do you have fractions on this website? Yes

*November 15, 2006*

**acids and alkalis**

anyways thanks guys for the website (L)

*November 4, 2006*

**acids and alkalis**

you should know this by now

*November 4, 2006*

**acids and alkalis**

soap, oven cleaner, toothpast and loads more :) x

*November 4, 2006*

**English!_+ check please!**

exactly!

*November 3, 2006*

**Physics**

A rifle is aimed horizontally at a target 46.0 away. The bullet hits the target 1.60 below the aim point. What was the bullet's flight time? What was the speed of the bullet as it left the barrel?

*November 2, 2006*

**inca arts and crafts**

norage

*September 28, 2006*

**Global...????**

Okay i have to for class monday present a speech thingy about Queen Elizabeth I... Like your in groups and one of us has to dress up like that person(queen) and the other two interview them! Soo like u need questions and answers...but heres the thing i can only come up with 4 ...

*September 16, 2006*

**algebra**

Solve for x. (l is the absoulte bar, not one) 3*l 3x-2 l -6 > l 3x-2 l We're given; 3*|3x-2|-6 >|3x-2| Add -|3x-2| to both sides to get 2*|3x-2|-6 >0 Add 6 to both sides to get 2*|3x-2|>6 Divide both sides by 2 |3x-2|>3 This means 3x-2>3 or 3x-2<-3 3x-...

*September 5, 2006*

**advanced algebra**

One number is 3 more that half of a second number. If the average of the two numbers is 31/2, find the smaller of the two numbers. PLEASE HELP. thanks! N-3=1/2 S N+S= 2*(31 1/2) help me

*August 31, 2006*

**Language Arts**

My teacher said to create an acrostic poem with the name EAST MILLBROOK and we have to fill it in with or goals for the year the only problem is she wants us to use words like exemplify instead or show. Please help me!!! This is what it should look like Exemplify A Show T M ...

*August 29, 2006*

**math**

(4,-2) and (2,-8) lie on the line Ax-2By = 28. What is the value of A? SOMEONE PLEASE HELP ME!! THANK YOU SOOOO MUCH! 4,-2) and (2,-8) lie on the line Ax-2By = 28. What is the value of A? Put the points in. First one. A4-2B(-2)=28 4A+4B=28 A+B=7 call this equation 1) second ...

*August 23, 2006*

**math**

what is the least common denominator? It is the smallest number into which all of the denominators in a series of fractions can be evenly divided. For instance, is you have fractions 1/2, 2/3 and 5/6, the denominators are 2, 3 and 6, and the least common denominator is 6. The ...

*August 1, 2006*

**Economics**

It’s increasingly popular among the states to allow the public to place various propositions on the ballot. When more then 50 % of votes cast are in favor of a proposition, it is approved and becomes law unless it’s held up in the courts. For example, proposals ...

*July 10, 2006*

**economics**

Suppose that the CPI in year five equals 123 and in year 6 equals 130. What was the inflation rate in year 6? Thank you, Megan 130/123 = 1.057 Ergo, 5.7%

*July 10, 2006*

**Economics**

Explain the role of human capital in the ability of an individual to find and keep a job. Thanks! take a shot first.

*July 2, 2006*

**Economics**

Explain how it's possible for actual GDP to temporarily exceed full-employment GDP. "full-employment GDP" is a defined concept. Full employment does not mean 100% employment -- an economy has a "natural rate of unemployment" and reflects the fact that ...

*July 2, 2006*