Science & Mathematics - 10 December 2007

is. A)x=y^2 B)y=logx^2 C)y=-x^2 D)x=-y^2
explain answer

2007-12-10 10:37:05 · 1 answers · asked by Anonymous in Mathematics

As human beings do you feel we nelect our achievements

2007-12-10 10:36:34 · 14 answers · asked by Chεεrs [uk] 7 in Other - Science

Solve each system by subsitution. Check your answer.

1. y=x-2
y=4x+1

2. y=x-4
y=-x+2

3. y=3x+1
y=5x-3

2007-12-10 10:36:13 · 19 answers · asked by Anonymous in Mathematics

If black holes are scientifically proven, then would there be some sort of opposite force of energy- like a white hole which pushes matter out rather than caving it in?

2007-12-10 10:34:20 · 5 answers · asked by call the owls 4 in Astronomy & Space

√36 n^2
√6*4 n^2
√6*2^2 (n^2)
6.2 (n^2)
=2n^2 √6

2007-12-10 10:30:39 · 4 answers · asked by Trisha 2 in Mathematics

Y'know like the division rule for 9 is adding up the digits in the number and seeing if 9 goes into them. THANKS!

2007-12-10 10:29:22 · 7 answers · asked by shnish 4 in Mathematics

A vertical spring (ignore its mass), whose spring stiffness constant is 950 N/m, is attached to a table and is compressed down 0.150m. (a) an upward speed can it give to a 0.30 kg ball when released? (b) How high above its original position (spring compressed) will the ball fly?

2007-12-10 10:26:25 · 3 answers · asked by ____ 3 in Physics

i no tha the radius of the cone is 9. how and what is the total surface area of the cone? geometry

2007-12-10 10:26:14 · 3 answers · asked by Anonymous in Mathematics

It makes me mad because they hype theses storms that barely ever happen like they say. I don't mean a month in advance being able to predict weather, in my mind that's impossible, but why can't it be like Back To The Future? They have "Doppler Radar" showing storm systems so why am i not able to look at my watch and say it's going to rain in 10 minutes?

2007-12-10 10:25:47 · 5 answers · asked by FLYNNN 2 in Weather

2007-12-10 10:22:06 · 11 answers · asked by Romeo 1 in Astronomy & Space

An amoeba reprduces by doubling every 20 minutes. If an amoeba is placed in a specimen dish at 12:00 noon, how many amoebas will be in the dish at 5:00 P.M.?

Please show the work or steps you did to solve the problem

2007-12-10 10:22:00 · 7 answers · asked by ? 2 in Mathematics

It was used before telescopes and man-made satellites got the exact measurements. How does it work?

2007-12-10 10:21:59 · 5 answers · asked by comedycatalyst 2 in Astronomy & Space

Ok so basically, there is a diagonal arrow indicating a downward push on a 75kg box. This arrow represents 50N and forms a 30 degree angle with the box (under the arrow). How do i find Fn and the horizontal + vertical ocmponents given this information. Please help!

BY THE WAY: FRICTION IS NEGLIGIBLE IN THIS PROBLEM!

2007-12-10 10:20:07 · 1 answers · asked by kerwin 1 in Physics

why?

2007-12-10 10:18:08 · 3 answers · asked by Anonymous in Weather

what year was the telegraph invented?

2007-12-10 10:17:29 · 1 answers · asked by caitlin 2 in Engineering

Please.
Anything will help.
Thankyou

2007-12-10 10:16:20 · 2 answers · asked by Anonymous in Physics

At a picnic, a Styrofoam cup contains lemonade and ice at 0°C. The thickness of the cup is 2.0 10-3 m, and the area is 0.016 m2. The temperature at the outside surface of the cup is 34°C. The latent heat of fusion for ice is 3.35 105 J/kg. What mass of ice melts in 1 hour?

2007-12-10 10:16:04 · 1 answers · asked by Britt 3 in Physics

hi i need some explanation to this problem
1. Find the tangent line approximation to f(x) x^2/3 at x=8

2. use your answers to number 1 to obtain a linear approximation estimating the value of (7.98)^2/3

3 will this be an overestimate or an underestimate

2007-12-10 10:14:43 · 1 answers · asked by Anonymous in Mathematics

i hear that it's bad for you to stand in front of a microwave. is this true? if it is why?

2007-12-10 10:12:38 · 15 answers · asked by Seven 2 in Engineering

C12H22O11--->??
The numbers are the subscripts and the last letter is an "O" for oxygen by the way : )
I have the reaction but not the products, do any of you know how to find the product side of the equation? This is an extra credit assignment and if I get this, then my grade will boost up to an A. YAY!! Oh and could you guys also write what is the product name too for example: Sodium Chloride, please and thank you : )

2007-12-10 10:10:37 · 5 answers · asked by Anonymous in Chemistry

its the number of valence electrons right?

2007-12-10 10:10:21 · 4 answers · asked by Anonymous in Chemistry

2007-12-10 10:08:09 · 25 answers · asked by Ronnie S 1 in Mathematics

Let R be a commutative ring with a unity. Suppose that I and J are two prime ideals of this ring, i.e. R/I and R/J are integral domains. Assume that I+J is not the whole ring R. Is it then true that I+J is prime as well? If not, can you find a counterexample?

2007-12-10 10:06:59 · 3 answers · asked by partalopoulo 2 in Mathematics

any phase and neutral conductor?

2007-12-10 10:05:07 · 7 answers · asked by Paul 2 in Engineering

2007-12-10 10:02:33 · 9 answers · asked by Trisha 2 in Mathematics

2007-12-10 10:00:33 · 2 answers · asked by goosebumpsandgiggles 4 in Weather

2007-12-10 10:00:25 · 6 answers · asked by The Biggest Creep 1 in Botany

I've been stuck on this for almost half an hour now, any help would be greatly appreciated, please give instructions on how to balance it. Thanks:

Pb(SO4)2 + LiNO3 -> Pb(NO3)4 + Li2SO4

2007-12-10 09:59:47 · 4 answers · asked by Anonymous in Chemistry

Radon-222 decays to a stable nucleus by a series of three alpha emission and two beta emission. what is the product?
A positron collides with an electron. what is the product of this collision?

can someone please help me out? thanks

2007-12-10 09:59:18 · 1 answers · asked by abc 1 in Chemistry

in species where young are brought to term in a womb they are given everything they require to grow and develop, via the placenta so how do young grow and develop in an egg when there is no connection to the mother how do they get every thing they need??

2007-12-10 09:58:44 · 5 answers · asked by I hate little green pigs 3 in Biology