Science & Mathematics - 17 September 2007

Can anyone help? I need the answer to these questions:

1) Solve, then state if conditional, inconsistent, or an identity equation.
1/2b-1/2=1/4b
I did this to answer so far... but I'm not sure if I did it right:
4(1/2b-1/2=1/4b)4
4/4b-4/4=1/4b
4/4b-4/4b-4/4=1/4b-4/4b
-4/4= -3/4b
-1=-3/4b, 1=3/4b Is that right?

2007-09-17 04:18:43 · 9 answers · asked by nunyan 2 in Mathematics

2007-09-17 04:15:41 · 8 answers · asked by Dr Anil J 1 in Zoology

2007-09-17 04:14:50 · 5 answers · asked by Steve G 3 in Engineering

2007-09-17 04:11:16 · 5 answers · asked by Anonymous in Mathematics

Is it blue and grey because the sea is and the skys mirrored or is it when the ocean evaporates intot he heated air it evaporates the dye from the water into it and that is what makes water clear?

2007-09-17 04:08:01 · 6 answers · asked by Cherryade 3 in Other - Alternative

a) Determine the ordering frequency, total ordering cost, total inventory carrying cost and total cost of running the inventory system if orders 100 units at a time.
b) Repeat (a) if orders 800 units at a time.
c) Determine the optimal inventory policy for the firm.

2007-09-17 03:56:30 · 6 answers · asked by coin 1 in Mathematics

Why do spiders always stay still in one spot and then when go near them they moving?

2007-09-17 03:55:17 · 13 answers · asked by Tcdog08 2 in Zoology

and ligaments?

2007-09-17 03:50:01 · 3 answers · asked by Terri L 2 in Biology

1-propanol ..... CH3CH2CH2OH
1-heptanol ..... CH3CH2CH2CH2CH2CH2CH2OH

I said 1-propanol because it's intermolecular forces are stronger, due to its shorter chain (which over-rides 1-heptanol's stronger dispersion forces). Am I right?

2007-09-17 03:49:10 · 7 answers · asked by Anonymous in Chemistry

2007-09-17 03:48:56 · 9 answers · asked by Anonymous in Astronomy & Space

|ab| < or = 1/2(a^2 + b^2).

2007-09-17 03:46:47 · 1 answers · asked by doublenickelsonthedime55 1 in Mathematics

2007-09-17 03:43:15 · 13 answers · asked by shrink 2 in Medicine

I found a formula that says:

cos2+cosine2=1 (the 2s are squares)

How do you find that formula?
It was stated that the formula is related to the Pythagoras Theory. How come? Can someone explain?

2007-09-17 03:40:12 · 3 answers · asked by Anonymous in Mathematics

What does the Qur'an have to say on the issue of drugs?

2007-09-17 03:39:47 · 15 answers · asked by Anonymous in Medicine

Need to convert:

r=1-2cos2t

and

3x^2-y^2=x^2/(2x-3y)

Thanks!

2007-09-17 03:36:40 · 1 answers · asked by Anonymous in Mathematics

I know that as I shift the load from chain lift #1 to chain lift #2 there will be a greater load on the chain lifts because of the angles at which the load is hanging . In order to make a safe move I want to know how to calculate the loads at any angle. Which trig function do I use?

2007-09-17 03:35:53 · 4 answers · asked by cmpnme 1 in Engineering

I need help with these two problems, please.

Find all points having an x-coordinate of -21 whose distance from the point (-5, -14) is 34.

A hot air balloon is headed due east at an average speed of 6mph at a constant altitude of 190 feet as it crosses an intersection. Find an expression for the distance in d (in feet) from the balloon to the intersection "t" seconds later.

Thank you so much!!

2007-09-17 03:32:41 · 1 answers · asked by Jims Jennifer <3 2 in Mathematics

2007-09-17 03:31:32 · 3 answers · asked by jessica d 1 in Chemistry

Someone asked me this question today and I could not remember the grade school answer for this! She was specifically talking about a point where one river flows into another flowing the opposite direction, I don't know if that would make the name different.

2007-09-17 03:31:22 · 6 answers · asked by Nate 2 in Geography

2007-09-17 03:30:26 · 1 answers · asked by jessica d 1 in Chemistry

Two charges are placed as shown in the figure (a right triangle with the right angle at point P). The distance between charges is 13.0 cm. Point P is 5.0 cm from the charge q1 and 12.0 cm from the charge q2. The magnitude of is 3.00uC , but its sign and the value of the charge q2 are not known. The direction of the net electric field at point P is entirely in the negative y-direction.

Determine the magnitude of the electric field.

2007-09-17 03:23:45 · 2 answers · asked by Hannah 4 in Physics

Also, are there any books that outline the basics of evolution and intelligent design for children or adults?

2007-09-17 03:23:19 · 8 answers · asked by JJ 4 in Other - Science

2007-09-17 03:17:50 · 9 answers · asked by anshul 1 in Zoology

i need a paragraph describing mother earth please

2007-09-17 03:14:23 · 6 answers · asked by Anonymous in Astronomy & Space

If body A is sliding over B due to an accelerating force, then A will have a constant velocity when

A. Kinetic friction equals the accelerating force
B. Equilibrium does not exist
C. Static friction equals the accelerationg force
D. the normal force equals zero

2007-09-17 03:13:55 · 3 answers · asked by CarzCrashzHeartz 3 in Physics

My teacher doesnt explain anything, he forgot to order the book and he doesn't provide examples. he makes us do our work with no guidance and we take it up as a group like a week later. I'd just like to understand. I am smart but with no direction.. i dont know what to do . I work well with examples and i dont have any,
thanks

2007-09-17 03:12:53 · 1 answers · asked by Angela S 1 in Chemistry

Solve x^2+7x-2=0

what are the solutions?

find the x-intercepts of f(x)=x^2+7x-2



find and label the vertex and the line of symmetry.
f(x)=(x+3)^2
the vertex is?
the equation of the line of symmetry is x=



Give and approximate solutions to three decimal places.
x^2-5x+3=0
the exact solitions are x=
the approximate solutions to 3 decimal places are x=

2007-09-17 03:11:31 · 1 answers · asked by Anonymous in Mathematics

In the wild, is it the usual fate of animals such as zebra, giraffe, antelope or deer to end their days being killed and eaten by lions, etc?

2007-09-17 03:11:08 · 2 answers · asked by Z 1 in Zoology

2007-09-17 03:10:42 · 4 answers · asked by Tony K 1 in Chemistry

What does mass equal?

2007-09-17 03:08:28 · 3 answers · asked by JJ 1 in Chemistry