Science & Mathematics - 28 October 2007

A.Increase
B.Decrease
C.Stay Constant

2007-10-28 18:10:17 · 11 answers · asked by Travelingstar 1 in Biology

2007-10-28 18:07:27 · 2 answers · asked by Anonymous in Chemistry

So far I'm down to..

x2-2/5x+4/5=0

x2-2/5x+2/5=-2/5

Not sure if i'm going the right way thou. Would appreciate any help.

2007-10-28 18:04:47 · 2 answers · asked by sour_bank_s 1 in Mathematics

Basically, I have no idea how to do the following problems.

1. f(x) = ln(e^-x - x)
2. f(x) = (x^2 + 5)^3 (3x^3 - 2)^2
3. f(x) = (5x^2 + 11)e^-21x
4. y = (x^2 + √x + 1 ) / x^3/2

Any help would be appreciated; thanks in advance!

2007-10-28 17:52:38 · 1 answers · asked by Anonymous in Mathematics

There must be millions of tires made and they all wear down.
So there must be tons of rubber particles along side roads.
Where is it all? What happens to it? Does it become dust?
Do we breath it?Why can't we see all those tons of accumulated particles?

2007-10-28 17:50:24 · 1 answers · asked by Mark K 6 in Physics

Given that log(xy^3)baseb = m and log(x^3.y^2) base b = p

Find log(√(xy)) base b in term of m and p.

The answer is (m+2p)/14 note that all above equation had log as a "base b" pls show working

2007-10-28 17:50:22 · 1 answers · asked by Anonymous in Mathematics

carbohydrates chains?

a. gastrin
b. secretin
c. cholecystokinin
d. amylase

2007-10-28 17:47:53 · 3 answers · asked by creampuff 1 in Biology

plz reply immediately

2007-10-28 17:44:53 · 1 answers · asked by busy medical student 1 in Medicine

An item costs $500 at time t = 0 and costs $P in year t. When inflation is r% per year, the price is given by the following equation.

P = 500e^(rt/100)

(a) If r is a constant, at what rate is the price rising (in dollars per year) initially? 5r dollars per year

(b) At what rate is the price rising after 2 years? 5re^(r/50) dollars per year

(c) Now suppose that r is increasing by 0.3 per year when r = 3 and t = 2. At what rate (dollars per year) is the price increasing at that time?

I just need help with part C, but I put up the answers on the other parts in case it is helpful to get the answer to C. I've tried C already and I get an incorrect answer of 5.466356401 dollars per year.

2007-10-28 17:40:22 · 1 answers · asked by Christian 1 in Mathematics

2007-10-28 17:39:23 · 6 answers · asked by Anonymous in Zoology

x + y = -8
x - 2y = 7

2007-10-28 17:37:38 · 8 answers · asked by Anonymous in Mathematics

What functional groups are involved in the formation of a triglyceride from glycerol and fatty acids? Label this functional group

If you can provide a link, please do:)

2007-10-28 17:34:12 · 1 answers · asked by Anonymous in Biology

3x+4(x-8)-x=3/5(10x+15)

2007-10-28 17:33:46 · 5 answers · asked by Anonymous in Mathematics

Solve the proportion: 1/8=7/2h

2007-10-28 17:32:45 · 5 answers · asked by Anonymous in Mathematics

solve for z.

2007-10-28 17:32:34 · 3 answers · asked by candy 3 in Mathematics

I need to know for a presentation tomorrow.

2007-10-28 17:31:37 · 3 answers · asked by bigmax_34 1 in Chemistry

I'm trying to find out how tall cows can get - I must not be typing in the right search words because... anyway - anyone know the answer? I just need to know the average height or tallest a cow can get - whatever the breed. Thanks.

2007-10-28 17:28:08 · 6 answers · asked by thyroider 2 in Zoology

ANY kind.
ty
especially for joining a team for ghost research investigations
however am interested in other types of paranormal research as well
thanks

2007-10-28 17:27:10 · 9 answers · asked by Shuggah Pie Sweets 3 in Paranormal Phenomena

2007-10-28 17:25:42 · 3 answers · asked by Anonymous in Earth Sciences & Geology

2007-10-28 17:25:36 · 3 answers · asked by Alie 1 in Botany

-4/7s=-28

2007-10-28 17:24:50 · 6 answers · asked by Michele P 1 in Mathematics

1.If the square of 2 less than an integer is 1 6, find the number(s).

2. Solar collector is 2.5m long by 2.0m wide. It is held in place by a frame of uniform width around its outside edge. If the exposed collector is 4m^2 , what is the width of the frame to the nearest tenth of a centimeter?

3. The length of a rectangle is 2cm more than 3 times its width. If the area of the rectangle is 95cm^2 , find the dimensions of the rectangle.

4. The hypotenuse of a given right triangle is 6 cm longer than the shorter leg. The length of the shorter leg is 2 cm less than that of the longer leg. Find the lengths of the three sides.

5. If a ball is thrown vertically upward from a height of 5 ft, with an initial velocity of 80ft/s, its height h after t s is given by . How long does it take the ball to return to the ground?

2007-10-28 17:22:54 · 1 answers · asked by Amanda K 1 in Mathematics

the problem is as simple as 4elevated to "x" equals 5 elevated to "x+1". Solve the equation exactly. I looks like this: (notice that x+1 is a exponent from 5. not 5 elvated to x and then +1). Also where *=x
4*=5(*+1) ===} (*+1) is an exponent. PLEASE HELP

2007-10-28 17:21:40 · 2 answers · asked by JJ 1 in Mathematics

Is there any astronomical things that will happen?..like changes of gravity or etc?..or it will affect the sun?..


and by our study, what things occur during a galactic alignment?..

2007-10-28 17:21:23 · 8 answers · asked by shoCkey 3 in Astronomy & Space

Somebody I know can't take Calcium Citrate since they have diverticulosis (it gives constipation) therefore is Vitamin D a good supplement instead? or is it the same thing, what kind should she take?

2007-10-28 17:18:17 · 4 answers · asked by Dude 103 1 in Medicine

Can anyone help me out with this question??
The heat capacity of a bomb calorimeter is determined to be 5.718 kJ/C. 1.350g of lactic acid (HC3H5O3) is burned. The temperature of the calorimeter increases from 24.00 C to 27.59 C as a result of this combustion. Calculate the heat of combustion per mole of lactic acid.

2007-10-28 17:17:02 · 1 answers · asked by Anonymous in Chemistry

a. ( x^3 - 7x^2 + 2x - 4 ) % ( x + 2 )

b. (4 x^3 - 2x^2 + 7x - 1 ) % ( x - 2 )

2007-10-28 17:15:22 · 1 answers · asked by Anonymous in Mathematics

Is there such a thing? Do we release or sense chemicals that attract the opposite sex?

2007-10-28 17:13:34 · 10 answers · asked by Texas Cowboy 7 in Biology

When do I change my clocks for when daylight savings time ends. Is it still Oct. 28th?

2007-10-28 17:08:58 · 12 answers · asked by lisa_chris_hays 2 in Geography

the volume of a cube is 125 in^3. find the surface area.

a. 25 in^2
b. 150 in^2
c. 100 in^2
d. 625 in^2

and this one!

in which way can a plane intersect a sphere?
a. a circle only
b. a line only
c. a point only
d. a point or a circle

HOW ABOUT THIS one... HELP plz

find the surface area of a sphere with a radius of 5 inches...

a. 100pi in^2
b. 166 2/3 pi in^2
c. 50 pi in^2
d. 38 1/2 pi in^2

2007-10-28 17:02:22 · 4 answers · asked by home_ed05 1 in Mathematics