Science & Mathematics - 4 November 2007

Find dy/dx of:


xy^2 = ln (y) + xy^3

2007-11-04 08:29:27 · 4 answers · asked by aguardiente3 2 in Mathematics

2007-11-04 08:28:33 · 1 answers · asked by arandjbar15 2 in Mathematics

Help!!! Opossums, mice and other animals in my yard!!!!!

What can i do? They are tearing down all of the?

trees and fields by my house, and we (people that live in the

area) are so pissed because we are having all of the animals

comes over here, we see tons of road kill, and

there was a Field mouse in my house!!!! and my wife is

terrified!!!!

There was a pregnant opossum in my recycling bin, and we

do not want to kill them............

2007-11-04 08:27:35 · 6 answers · asked by Anonymous in Zoology

102. mL of a solution of quinine contains 206.0 x 10-3 mol of quinine. If this is titrated with 0.0200 M HCl, what is the pH at the stoichiometric point? Quinine is monobasic with Kb = 7.90 x 10^-6

im so lost... thanks for any help!!!

2007-11-04 08:24:20 · 1 answers · asked by TBMlover 1 in Chemistry

Calculate the pH of the solution that results from the addition of 0.020 moles of HNO3 to a buffer made by combining
0.500 L of 0.290 M HC3H5O2 ( use Ka = 1.30 x 10 -5 )
and 0.500 L of 0.580 M

thanks!!!!

2007-11-04 08:23:13 · 1 answers · asked by TBMlover 1 in Chemistry

Why do animals such as dogs, cats, birds, etc all look exactly the same whilst humans all look different?

2007-11-04 08:23:08 · 8 answers · asked by Matty 1 in Biology

2007-11-04 08:15:59 · 2 answers · asked by Anonymous in Mathematics

1. the incenter, centroid, and orthocenter are always inside the triangle. T or F?

2. It is not possible for a trapezoid to have 3 congruent sides. T or F?

2007-11-04 08:15:16 · 6 answers · asked by Anonymous in Mathematics

http://www.december212012.com/articles/general_information/The_Meaning_of_the_December_21_End_Date.htm

what do you think of this article?

2007-11-04 08:13:59 · 7 answers · asked by zanaru@pacbell.net 1 in Astronomy & Space

if the hypotenuse of a right triangle is 12ft and a side is 6ft what is the length of the other side express your answer in radical form?

2007-11-04 08:12:54 · 6 answers · asked by Anonymous in Mathematics

Calculate the mass of AgCl that can be prepared from 155 g of NiCl2 and sufficient (i.e. excess) AgNO3.

A. 85.5 g
B. 171 g
C. 120 g
D. 239 g
E. 342 g

2007-11-04 08:10:22 · 4 answers · asked by Lily 2 in Chemistry

2007-11-04 08:09:53 · 2 answers · asked by Anonymous in Biology

Let f(x) = sqrt(225-x^2) Use differentials (linear approximation) to estimate f(12.1). Base your approximation at x = 12 . Give your answer to at least 4 significant figures or use fractions.

2007-11-04 08:09:47 · 2 answers · asked by bball10010 1 in Mathematics

A quantity of 25 mL 2.0 M NaOH is mixed with 25mL 2.0 M HCl, yielding water and sodium chloride. This is all of the infomation that the problem gives, how do I calculate the molar enthalpy. I am assuming the temperature is constant, but it doesn't even give a temperature, do I need one?

It says I must write the balanced net ionic equation, and the calculate the molar enthalpy of the reaction.

Can someone help me with this please?

2007-11-04 08:09:30 · 1 answers · asked by eclipsegt_01_03 2 in Chemistry

Need help with this problem:

The volume of one bike tire is 2.45L. Determine the mass savings if a racer filled both of his tires with helium rather than air. Assume the temperature is 30 degrees C and the racer pumps his tires up to 125 psi (14.6956 psi=1atm). You can also assume that air is 80% nitrogen and 20% oxygen.

2007-11-04 08:09:19 · 1 answers · asked by Anonymous in Chemistry

2007-11-04 08:08:51 · 1 answers · asked by Anonymous in Biology

Ok this equation is -2log3 1?x + 1/3log3 sqrt x


For some reason I keep getting 1/2log3x but I have a strong feeling that this is not correct at all can someone help me get on the right track please?

2007-11-04 08:06:44 · 2 answers · asked by iknownothing17 1 in Mathematics

2007-11-04 08:05:42 · 8 answers · asked by Anonymous in Biology

what is the rain to you? And how do you feel when it rains? I know what the rain is to me....it is much more than just water for me but what is it to you?

2007-11-04 08:01:30 · 7 answers · asked by Skye 1 in Weather

2007-11-04 08:00:57 · 2 answers · asked by pielpamelaal 1 in Zoology

im seeing (mostly) a white halo around people's heads, im trying to see colours next, how do i do this?

2007-11-04 07:58:24 · 10 answers · asked by Anonymous in Paranormal Phenomena

The reason I ask is that I have a friend who claims that eating pigeon seven days in a row can kil you. I think this is b@&*$%£s and I want to be proved wrong if possible as it would be a fantastic piece of trivia were it true.

2007-11-04 07:56:21 · 6 answers · asked by Anonymous in Biology

i dont get whats the difference and how they are all working together?!?

2007-11-04 07:56:18 · 6 answers · asked by M 3 in Biology

find the equation of the altitude from A to BC
A(11,12)
B(7,2)
C(13,-6)

2007-11-04 07:55:17 · 3 answers · asked by Anonymous in Mathematics

would it be ap^2- a^2p

the ^2 means squared, so a times p squared minus a squared times p.

is this right?


also how would i simplify it?

2007-11-04 07:55:11 · 9 answers · asked by ♥ 2 in Mathematics

2007-11-04 07:52:08 · 3 answers · asked by Anonymous in Biology

it doesn't make sense to me, please help

2007-11-04 07:51:20 · 5 answers · asked by Anonymous in Mathematics

the ^ means that it is squared please help how do you solve it by factoring

2007-11-04 07:45:26 · 2 answers · asked by Anonymous in Mathematics

2007-11-04 07:44:23 · 1 answers · asked by Strawberries 2 in Biology

2007-11-04 07:43:09 · 1 answers · asked by Strawberries 2 in Biology