Science & Mathematics - 5 July 2007

a. subtract 4 1/2%
b. add 4 1/2%
c. multiply by 1.045
d. multiply by 1.04

i dont think it is a or b it might be c help me please??

2007-07-05 15:24:01 · 7 answers · asked by Anonymous in Mathematics

How many Kg would be required to make up 200 mL of a 0.0025 M solution of ammonium oxalate monohydrate [ (NH4)2 C2O4 H20]...what is the process and answer? I don't know how to go about this.

2007-07-05 15:18:43 · 5 answers · asked by mdet06 2 in Chemistry

Ball A is dropped from the top of a building at the same instant that ball B is thrown vertically upward from the ground. When the balls collide, they are moving in opposite directions, and the speed of A is twice the speed of B. At what fraction of the height of the building does the collision occur.

2007-07-05 15:17:54 · 6 answers · asked by Anonymous in Physics

As a Plastic Surgeon specializing in Burns, what type of procedures do you complete ???

2007-07-05 15:08:06 · 2 answers · asked by Anonymous in Medicine

6x-2(2-x)=4(2x-3)

5(3+y)=3(y+5)

3(x+1)-2(x-5)=10

I'm doing test corrections and I got these problems wrong.

2007-07-05 15:05:58 · 9 answers · asked by Anonymous in Other - Science

I have a rash on my arm. I've recently been in some places where there was poison sumac, as well as some places with poison ivy. I'm pretty sure it's one of them, but how do I know which one?

2007-07-05 15:00:02 · 3 answers · asked by b b 2 in Botany

help me to solve this

2007-07-05 14:53:12 · 9 answers · asked by NOMEGA 1 in Mathematics

We're going through a heatwave and my house goes up to 80 degrees in the daytime. I have almost unlimited cheap access to cool ground water (64 degrees). Is it practically feasible to fill my bathtub and use it as a heat sink? How would I do this?

2007-07-05 14:47:01 · 4 answers · asked by Anonymous in Physics

Why do you come to this conclusion?

2007-07-05 14:45:40 · 8 answers · asked by Anonymous in Zoology

My dad and I were sitting on the patio last night. While we were talking to each he gasped and told me to look up at the sky. We saw this light that looked like a big bright star. It seemed still for a moment. After we looked at it for a couple of seconds the light faded as it quickly moved out of view. What did we see?

2007-07-05 14:45:34 · 12 answers · asked by Bob 3 in Astronomy & Space

1. Find the cartesian equation of the line of intersection of the two planes 2x - 3y - z = 1 and 1 and 3x + 4y + 2z = 3


2. The four points A,B,C and D have position vectors ( 4 2 -1) (1 2 1 ) (-3 0 3) and (5 -4 1) respectively.

The perpendicular from D to the containing A,B and C meets the plane at E. Find

(a) the scalar product vector equation of the plane containing A,B and C.

(b) the vector equation of the straight line through D and E.
(c) the position vector of the point E.

3. show that the line with vector equation r = (6 -5 1) + (1 -2 3) is perpendicular to the plane with vector equation r. (1 -2 3) = -9. Find the position vector of the point of intersection of the line and plane and the distance from the point with position vector (1 1 -11) to this point of intersection.

My ans for this is 7units can anyone help me with working thanks.

2007-07-05 14:39:33 · 1 answers · asked by adsion l 1 in Mathematics

2007-07-05 14:29:59 · 2 answers · asked by Feras J 1 in Engineering

given each brother 6 bars of chocolate instead, she would have been short of 3. How many brothers does Monica have ?

2) There are 2 types of star-shaped buttons in Mother's sewing kit : the 5-pointed stars & the 7-pointed stars. Mother sewed 15 star-shaped buttons onto Reiko's T-shirt. Out of those 15 stars, Reiko counted 91 points. How many of each kind of star were sewn onto Reik's T-shirt ?

2007-07-05 14:25:15 · 5 answers · asked by Lim S 3 in Mathematics

im not sure i was wondering..they are right?

2007-07-05 14:22:45 · 4 answers · asked by Girl With Dreams 2 in Other - Science

2007-07-05 14:22:06 · 3 answers · asked by Anonymous in Chemistry

2007-07-05 14:20:57 · 5 answers · asked by Anonymous in Chemistry

2007-07-05 14:19:53 · 2 answers · asked by Anonymous in Chemistry

2007-07-05 14:18:50 · 2 answers · asked by Anonymous in Chemistry

What do you do if the traffic light flashes red and green (alternating). O_o i got that as a question

2007-07-05 14:18:46 · 4 answers · asked by Rawrie. 2 in Physics

very very long shot .. like the one in a movie called Shooter.
in the movie he said it may have a little effect ..

i wanna know if that is true ..

2007-07-05 14:17:47 · 8 answers · asked by Anonymous in Physics

Ok, so whatever people say you know we look like monkeys, etc. there's no proof that we were 'evolved' from them. Nothing from evolution makes sense. Please give resources!

2007-07-05 14:17:41 · 14 answers · asked by Zimiro 1 in Biology

At the inflow connected to 1& 1/2 in. pipe, I have a 2 hp pump. The main 3 in pipe is going vertically upward to the ground floor up to the fifth floor.

2007-07-05 14:11:37 · 2 answers · asked by Tito Ter 1 in Engineering

a. H2SO4 b. NA2SO4 c. NaHS d.H2S e. HNO3

2007-07-05 14:07:50 · 6 answers · asked by staylor8319 1 in Chemistry

2007-07-05 14:00:45 · 3 answers · asked by JJ 2 in Other - Science

2007-07-05 13:58:19 · 16 answers · asked by ? 3 in Zoology

i need to find out the weather of melbourne for the past 6 moths , plz help me im in real trouble,fergot to take the reading for a project and its due in 2 weeks later.pllzzzzzzzzzzz help me someone

2007-07-05 13:53:53 · 3 answers · asked by Anonymous in Weather

the two functions y=x^2 and y=9 create an area...find horizontal line h=k such that it divides the area into two equal halves

2007-07-05 13:53:50 · 2 answers · asked by yourdaddy0 2 in Mathematics

electrcial question

2007-07-05 13:49:03 · 4 answers · asked by Anonymous in Engineering

Oh for gods sake please don't tell me there urine comes out of there utters.

2007-07-05 13:41:25 · 11 answers · asked by reelperspectiv 5 in Zoology

2007-07-05 13:29:14 · 6 answers · asked by cougarl 1 in Zoology