Monday

May 2, 2016
Total # Posts: 329

**math**

question: find the points at which the graph of x^2 -4x + y62 -6y =12 has a vertical or horizontal tangent line. I found the deriviative to be (x-2)/(3-y) Then, the x value for a horizontal would be x=2 and the y value for a vertical would be y=3. But how do i find the exact ...
*November 1, 2009*

**calculus**

how would i find the deriviative of y= x^ (- square root of 2)
*October 29, 2009*

**math**

sorry heres the rest: P(x)= sin(abs(x)) -1
*October 3, 2009*

**math**

I dont understand this calculus problem at all. can someone show me step by step? Find all values of x for which the function is differentiable
*October 3, 2009*

**bio- double check answers**

Would it be the food web then?
*August 31, 2009*

**bio- double check answers**

The ecological succession in an alaskan forest was fireweeds-> shrubs -> hardwood trees-> conifers. The variety of species that are best adapted to life under the prevailing conditions (with the conifers) comprise a. an ecosystem b. a food web c. a climaz community d...
*August 31, 2009*

**Science**

What is the conductivity of STAINLESS STEEL?!?!? PLZ help me because I've been searching for DAYS and I really need that fact! Thanks Allie
*August 26, 2009*

**Math**

Maybe if you put it into an algebraic expression... Let x be the number, 7x = 3x + 12 and work it out
*August 26, 2009*

**economics**

Why would YOU talk about? I mean if you are a developing nation maybe you would want assistance from the UN or somewhere....
*August 25, 2009*

**calculus 2**

i dont know
*May 27, 2009*

**science**

A ? is a channel along which water is continually flowing down a slope
*February 27, 2009*

**chemistry**

use dimensional analysis and the heat vaporization table. Water = 40.7 kj/mol. Start with the information that you were given and make sure that all of your units cancel out! (50.0mL)(1.00g/1mL)(1 mole H2O/18.0g H2O)(40.7kj/1 mole H2O) = 113.0 kj. There are 3 significant ...
*February 7, 2009*

**physics**

Woops! 125km/hr is 34.7m/s so 34.7*14.3 is 496.21m
*January 25, 2009*

**physics**

Givens: a=-9.81m/s^2 d=-1001m vi=0m/s d=vit+1/2at^2 -1001m=1/2-9.81m/s^2t^2 -1001m=-4.905m/s^2t^2 divide -1001m by -4.905m/s^2 204s^2=t^2 square root both sides 14.3s=t 125km/hr is 56m/s 56*14.3= 800.8m, that's the distance from the package dropped.
*January 25, 2009*

**Chemistry**

Ok, i understand that for real gases you have to account for volume of particles, and that they have attractive forces that lower the pressure, that make the ideal gas law invalid, but what does that have to do with low temp and high pressure?
*October 5, 2008*

**Chemistry**

Is it because at high pressure, molecules have volume, and at low temperature gases move slowly and act like a liqud so they have attractive forces that decrease pressure?
*October 5, 2008*

**Chemistry**

Ok, i understand that for real gases you have to account for volume of particles, and that they have attractive forces that lower the pressure, that make the ideal gas law invalid, but what does that have to do with low temp and high pressure?
*October 5, 2008*

**Chemistry**

I dont know what you just said, but i know that when an ideal gas is at a lower pressure, the molecules do not collide with the container as frequently, and that at a high temperature the molecules do collide frequently. What does this mean, does it even help me?
*October 5, 2008*

**Chemistry**

Why do gases behave in a less ideal manner when in LOW TEMP. AND HIGH PRESSURE?
*October 5, 2008*

**constellation puppis**

where can I find some basic information on the star puppis for grade 3 level? anyone.
*June 12, 2008*

**Maths**

How many different numbers can be made using 4 numbers a b c and d and only + and - ?
*February 5, 2008*

**chemistry**

how to find the percent difference?
*December 30, 2007*

**french**

What contributions did the french make to america?
*December 12, 2007*

**Chemistry**

what is the emission spectrum of the sun and what does this spectrum reveal about the types of elements in the sun?
*October 27, 2007*

**Algebra**

Thanks!
*October 25, 2007*

**Algebra**

A statue is 8ft. tall. The display case for a model of the statue is 18 inches tall. Which scale allows for the tallest model of the statue that will fit in the display case? A. 1 inch: 2 inches B. 1 inch: 7 inches C. 1 inch: 5 inches D. 1 inch: 10 inches
*October 25, 2007*

**Social Studies**

Why is it difficult to travel on many African rivers?
*October 16, 2007*

**Chemistry**

Write the formulas of the ions (including charges) present in aqueous solutions of the following: K2CO3 NH4NO3 NA2Cr2O7 Mg(C2H3O2)2 Make sure it is both mass and charge balanced. Here is a listing of many polyatomic ions. This should give you a start. Post with specific ...
*April 4, 2007*

**math - 6th grade**

how do you do front end estimation when the number of digits are different....like 12,249 - 6,875 dgud wat are the poperties of math and what do they all mean????????? i need help in my homework I haven't used the expression "front end" estimation but I would ...
*September 25, 2006*