Science & Mathematics - 9 October 2007

2007-10-09 17:58:10 · 3 answers · asked by Jenni 1 in Astronomy & Space

2 across and two down if you add these together in would make an answer

How many possibilities are there to get 200 and what are they

2007-10-09 17:58:05 · 3 answers · asked by jatin b 1 in Mathematics

2007-10-09 17:55:51 · 4 answers · asked by lauren23212000 1 in Biology

If y varies directly as x and y = 14 when x = 7, find x when y is 30.

x = 2
x = 7
x = 15
The answer cannot be determined with the information given.

2007-10-09 17:55:42 · 3 answers · asked by Anonymous in Mathematics

A barrel contains only apples and oranges. There are twice as many apples as oranges. The apples are either red or yellow, and 4 times as many apples are red as are yellow. If one piece of fruit is to be drawn at random from the barrel, what is the probability that the piece drawn will be a yellow apple? Give answer to the nearest tenth.__________% Remember to use just 4 spaces in the answer.

2007-10-09 17:55:25 · 2 answers · asked by Anonymous in Mathematics

Marty has exactly 5 blue pens, 6 black pens, and 4 red pens in his knapsack. If he pulls out one pen at random from his knapsack, what is the probability that the pen is either red or black?

11/15
2/3
1/2
1/3
1/5

2007-10-09 17:55:04 · 4 answers · asked by Anonymous in Mathematics

The insect has wings but they always seem to fall off and they just crawl around. Does any one have any idea what they are and how they are getting in my room??? I do leave my window open during the day but there is a screen. Also, I have my a/c vent open but I am not even sure that they are coming in through there. Can anyone help?

2007-10-09 17:51:06 · 6 answers · asked by psychlover 2 in Biology

2007-10-09 17:45:54 · 1 answers · asked by MEAGANCANDANCE 1 in Biology

Just wondering of basic couriosity, my girl friend is on the birth control pill which she has to take the same time everyday- Just wondering on its effectiness based on the "what if" condition that she does take it on time everyday without missing, and its always on time everyday. how effective is it against pregnancy? thanks everyone.

2007-10-09 17:44:20 · 4 answers · asked by Anonymous in Medicine

You swing a bucket of water in a vertical circle at arm's length (.70m). What is the minimum number of revolutions per second you must maintain to keep the water from spilling out of the bucket.

2007-10-09 17:43:39 · 1 answers · asked by elbenito2513 2 in Mathematics

2007-10-09 17:42:30 · 8 answers · asked by Freebrum 3 in Mathematics

There are 10 lines in a plane, each intersecting each other. No three lines pass through the same point. At how many points do the lines intersect and into how many regions do they seperate the plane?

2007-10-09 17:41:59 · 2 answers · asked by jackie 2 in Mathematics

2007-10-09 17:41:13 · 15 answers · asked by scouser_huyton 2 in Astronomy & Space

2007-10-09 17:39:09 · 18 answers · asked by LilyDragon 3 in Geography

2007-10-09 17:38:22 · 6 answers · asked by Anz 1 in Physics

A trough is 10ft long and its ends have the shape of isosceles triangles that are 3ft across the top and have a height of 1ft. If the trough is being filled with water at a rate of 12ft2/min, how fast is the water level rising when the water is 6 inches deep?

2007-10-09 17:36:29 · 1 answers · asked by Britt R 1 in Mathematics

Which wavelengths of light are most strongly absorbed by chlorophyll? How does this relate to the color of leaves?

2007-10-09 17:34:35 · 2 answers · asked by milky b 1 in Botany

Find derivative of the following:

h(x)= cos(ln(arc cot(3x)))

Would like to see work as well please!. Thanks!

2007-10-09 17:33:49 · 1 answers · asked by Anonymous in Mathematics

The sum of the squares of two consecutive positive integers is 85. Find the integers.

I know the answer is 6, 7 but how do I get to that answer? if someone can please explain.

2007-10-09 17:28:33 · 10 answers · asked by Molina88 2 in Mathematics

and why does carrier does not contain any information even though its amplitude is modulated in accordance of that of the modulating signal.

2007-10-09 17:22:10 · 2 answers · asked by Anonymous in Engineering

a.1/(1 –x + x2)

b. (4 + x)3/2

c. arcsin(x)

2007-10-09 17:11:42 · 1 answers · asked by Anonymous in Mathematics

[{sin a + cos(2b-a)}/{cos a - sin(2b-a)}] = cot (45-b)

thank you.

2007-10-09 17:05:52 · 1 answers · asked by Anonymous in Mathematics

i like science

2007-10-09 17:00:23 · 4 answers · asked by adila k 1 in Earth Sciences & Geology

If you were to build a time machine and go to the future ,you are most likely to find yourself staring at yourself right. Because the future you has been through the process and so he will be expecting you right.

2007-10-09 16:58:15 · 10 answers · asked by dan 2 in Astronomy & Space

[(sec^4 x + tan^4 x) / (sec^2 x tan^2 x)] - [(cos^ 4 x)/(sin^2 x)] = 2

thanks!

2007-10-09 16:53:24 · 2 answers · asked by chumme 1 in Mathematics

In addition, list observations if you put 3 drops of water and 3 drops of oil together in a test tube.

2007-10-09 16:50:45 · 1 answers · asked by mz. * 1 in Chemistry

how do you factor

x^3-4x^2-11x+30

2007-10-09 16:48:11 · 3 answers · asked by Anonymous in Mathematics

Also, have you even seen your own aura? Sometimes I might jsut randomly look u an an object or person and I see it, both my mom and I have a light blue almsot fluffy cloud color, and my aura was grey/blue once too. My mom also sinced her mom's auro change before she died (its said that your aura turns white a few hours before death and my mom never knew this till I told her)

2007-10-09 16:47:32 · 19 answers · asked by Anonymous in Paranormal Phenomena

please......help

2007-10-09 16:43:52 · 3 answers · asked by Alexa H 1 in Mathematics

2007-10-09 16:43:14 · 1 answers · asked by zikidy zizack 3 in Chemistry