Science & Mathematics - 4 October 2007

whats geometry??

2007-10-04 05:08:25 · 5 answers · asked by Anonymous in Mathematics

Solve for w(t) at t=100s if dw/dt = 0.025 s^(-1) w + 75
if w(0)=2.75.

0.025 s^(-1) is a constant coefficient in front of w.


I need to show all work, and don't understrand Diferentaion and inergrals too well...so if you can solve this showing a step by step way to follow that will be greatly appreciated.

2007-10-04 05:02:01 · 1 answers · asked by j2dabizo 1 in Mathematics

2007-10-04 05:00:25 · 13 answers · asked by Anonymous in Astronomy & Space

2007-10-04 04:59:12 · 5 answers · asked by g_jo8 2 in Mathematics

Is it:
con.H2SO4 / heat; H2 / Pt
(or)
KOEt/EtOH/heat; H2/Pt

2007-10-04 04:58:41 · 2 answers · asked by student217 1 in Chemistry

how would i know this this rule applies?

i know it does to many functions. but could someone explain to me why this is?

thank you guys

2007-10-04 04:57:04 · 5 answers · asked by blank 2 in Mathematics

How would you go about solving this problem?
(IDK how to solve because there are 2 variables. The height and the second base.
A 10 ft sectionis of gutter is made from a 12 in wide strip of sheet metal by folding up 4 in strips on each side so that they make the same angle with the bottom of the gutter. Determine the depth of the gutter that has the greatest carrying capacity

2007-10-04 04:53:43 · 1 answers · asked by Frank C 1 in Mathematics

I'm not so good with word problems, for someone reason I always get confuse with the numbers and words and if I really need it or not. So here it is:

Jim Olsen makes and sells gourmet food items. He makes two types of salad dressings: garlic and tofu. Each gallon of garlic dressing requires 2 qt. of oil and 2 qt. vinegar. Each gallon of tofu dressing requires 3 qt. of oil and 1 qt of vinegar. Jim makes $3 profit on each gallon of garlic dressing and a $2 profit on each gallon of tofu dressing. He has 18 qt of oil and 10 qt of vinegar on hand. How many gallons of each type of dressing should he make to maximize his profits?

If you know a website that can help me that would be nice.

2007-10-04 04:50:15 · 3 answers · asked by Anonymous in Mathematics

Assuming that the volume and temperature of the reaction mixture remain constant, what is the percent change in pressure if the reaction goes to completion?

A(g)+ 2B(g) ----->2 C(g)

A reaction mixture initially contains 1.4 L of A and 1.8 L of B.

2007-10-04 04:44:13 · 1 answers · asked by Anonymous in Chemistry

1. 7(3c-2d)-5(2c-3d)
2. 3(m-n)-3(m+n)
3. 3(r+2s)-(r+s)
4. 2(3p-2q)-3(2q-7q)
5. 2(3x-5y)-3(2x-y)
6. 4(3g+2h)-(5g-2h)
7. 4(3a-4b)-3(2a+5b)
8. 7(2x+y)-5(x-2y)
9. 3(2c-3d)-3(3c-2d)
10. (3m-7n)-(2m+3n)
11. (6w-3y)-(3w-4y)
12. 3(3x+2y)-4(3x-4y)
13. 4(3x-4y)-(2x-7y)
14. x(3x-2y)+y(3x-4y)
15. a(3a-4b)+2a(a-b)

2007-10-04 04:42:55 · 4 answers · asked by Alicia ... 2 in Mathematics

the sum as i goes from 1 to n of (n x n+1) = n(n+1)(n+2)/3
this is just so confusing!! every time i think i have it figured out i get so lost. any help would be great. 10 points to whoever completes the entire proof.
thanks for all your help

2007-10-04 04:41:42 · 3 answers · asked by numbr1TXfan 4 in Mathematics

i need to find out as much as possible in two days . [please help me as best you can !!!!!!!!!]
thanks

2007-10-04 04:40:01 · 2 answers · asked by victoria 1 in Chemistry

i asked this question earlier but i still didnt understand , so i need some one to really break it down for me with ..some word details towards every step. please :(

2007-10-04 04:33:10 · 5 answers · asked by Anonymous in Mathematics

sodium
potassium
calcium
iron

2007-10-04 04:33:07 · 2 answers · asked by tia 3 in Chemistry

A 3.00-L flask is filled with gaseous ammonia, NH_3. The gas pressure measured at 23.0 degrees C is 1.55 atm.

2007-10-04 04:31:23 · 1 answers · asked by Anonymous in Chemistry

Is it just that fog rolls in from the sea but mist rises from the ground?

2007-10-04 04:30:32 · 8 answers · asked by Anonymous in Weather

2007-10-04 04:28:34 · 1 answers · asked by RogerDodger 1 in Mathematics

If so at what temperature does this occur?

2007-10-04 04:25:32 · 5 answers · asked by Nick R 2 in Chemistry

2007-10-04 04:22:28 · 5 answers · asked by Anonymous in Astronomy & Space

gain electrons
lose electrons
gain protons
lose protons

2007-10-04 04:21:48 · 5 answers · asked by tia 3 in Chemistry

what is the second derivative test? how can you test for concavity? how can you find relative extrema using second derivative test? how can you find points of inflection? how do you know when a function increases or decreases?

2007-10-04 04:21:16 · 2 answers · asked by Sheee-Luh-Gee 1 in Mathematics

If the total kinetic energy of a colliding proton and anti-proton increases what difference does this have to the subatomic paticles produced?
Can someone help me please with the above!?
Thankyou

2007-10-04 04:19:58 · 1 answers · asked by Ash 2 in Physics

1)
NH4OH + HC2H3O2----------->H2O + NH4C2H3O2
W.Elec. W.Elect ionic/soluble
2)
HCL + Mg(C2H3O2)2 ------------->MgCl2 + HC2H3O2
St.Elec. Ionic/soluble ionic/soluble W.Elec.
3)
NaHCO3 + H2SO4 --------->NaSO4 + H2CO3
ionic/soluble St. Elec. Ionic/soluble W.Elec.

2007-10-04 04:19:13 · 2 answers · asked by Christina S 1 in Chemistry

2007-10-04 04:17:46 · 6 answers · asked by nathan 2 in Mathematics

A projectile (mass = 0.191 kg) is fired at and embeds itself in a target (mass = 2.07 kg). (The target is initially stationary). The target (with the projectile in it) flies off after being struck. What percentage of the projectile's incident kinetic energy does the target (with the projectile in it) carry off after being struck?

2007-10-04 04:16:02 · 2 answers · asked by txsweetpea512 1 in Physics

2007-10-04 04:16:00 · 4 answers · asked by Anonymous in Astronomy & Space

2007-10-04 04:13:16 · 13 answers · asked by Bill W 【ツ】 6 in Astronomy & Space

Thanks a lot!

2007-10-04 04:12:06 · 1 answers · asked by william 2 in Engineering

How much work must the man do, to accelerate the crate to speed 1m/s?

2007-10-04 04:11:22 · 2 answers · asked by Alexander 6 in Physics

For example, if I want to calculate 2^0.6 without a calculator, how can I do this? I just came to the realization that I've been in school for a long time without ever finding this out! (They're about to give me a bachelor's in mechanical engineering for crying out loud!) A good link would be just as helpful as a long-winded explanation. Thanks.

2007-10-04 04:09:18 · 0 answers · asked by kevinthenerd 3 in Mathematics