Science & Mathematics - 12 January 2007

The number which best completes the sequence below is:
20 5 30 6 42 7 ?




56



48



49



53



63

I didn't understand could you help me

2007-01-12 07:53:19 · 6 answers · asked by diamond 1 in Mathematics

Can someone explain this experiment to me?

2007-01-12 07:50:11 · 10 answers · asked by Anonymous in Chemistry

I put a Pyrite rock inside my fish tank, but now I'm not sure if it could affect my tank water in some way. Can the pyrite rock release something undesirable like sulfur or iron in some way that may affect my fish?

2007-01-12 07:49:07 · 4 answers · asked by carolina n 2 in Earth Sciences & Geology

part of this math problem
2
24-:-3*(5-3) the part i am having trouble on is the exponent do i multiply the exponent or do i just bring the 2 and put it on to the 5
2 2
and 3 and then do it as 5 - 3 which would be 10-6
am i right how do i do that part of the problem i am stuck.

2007-01-12 07:46:30 · 5 answers · asked by knowssignlanguage 6 in Mathematics

What does the "hunters moon" refer to?

2007-01-12 07:41:07 · 10 answers · asked by Anonymous in Astronomy & Space

A shop sign hanging off the edge of a wall weighting 201 N is supported by a uniform 129 N beam of length = 1.70 m. The guy wire connecting the sign is D=1.36 m from the backboard. The angle the uniform beam supporting the sign and the wall makes is 39.2 degrees.

What is the tension in the guy wire?

What is the horizontal force exerted by the hinge on the beam?

What is the vertical force exerted by the hinge on the beam?

I have been working on this for hours but all the teacher has given us to work this problem is a torque equation, which I don't think helps in this question. Please help!!!

2007-01-12 07:39:27 · 5 answers · asked by Anonymous in Physics

2007-01-12 07:37:32 · 14 answers · asked by cead 3 in Zoology

2007-01-12 07:37:19 · 10 answers · asked by pitbulllover 1 in Biology

2007-01-12 07:36:58 · 5 answers · asked by mehrdad 1 in Botany

scientific view only. biotics.

2007-01-12 07:31:29 · 28 answers · asked by doorseeker 1 in Biology

Ralph is 3 times as old as Sara. In 6 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now.
The equation for solving this problem is:

2007-01-12 07:29:26 · 10 answers · asked by Anonymous in Mathematics

Doesn't this sound yummy?

Experts have long agreed that the fatal brain-wasting disease called Mad Cow is spread by the routine practice on industrial farms of feeding cows to cows---essentially turning natural herbivores into cannibals. (This practice of course is banned on organic farms.) Now a group of industry-friendly scientists have come up with a "solution" to the problem. Instead of discontinuing the practice of force-feeding bovine herbivores blood, manure, and slaughterhouse waste, scientists claim they have successfully genetically engineered a new cow that will not contract Mad Cow Disease, even when fed infected meat from Mad cows. Scientists have genetically engineered the cows to be born without normal nervous system prions, which go awry when an animal catches the disease. According to the researchers, the animals appear to be doing fine, so they apparently don't really need those prions anyway (even though they are there as a result of millions of years of evolution).
Learn more: http://www.organicconsumers.org/articles/article_3750.cfm

2007-01-12 07:29:13 · 5 answers · asked by Anonymous in Biology

Find two consecutive integers whose sum is 67.
The larger integer should be represented as:

2007-01-12 07:28:47 · 17 answers · asked by Anonymous in Mathematics

find 2 consecutive positive integers where the square of the 1st number decreased by 25 equals three times the second number?

2007-01-12 07:27:24 · 5 answers · asked by elshe1919 1 in Mathematics

last summer on my deck by the pool,a strange little bug landed on my sons head.I have never seen anything like it~ We all said it had to come from another dimension~It was a bug with fluffy little feathers covering its body,it was about the size of a raisin.It had 2 clear wings.
Has anyone ever seen it?

2007-01-12 07:26:43 · 2 answers · asked by walksoffthebeatenpath 1 in Zoology

2007-01-12 07:24:42 · 13 answers · asked by sos 1 in Mathematics

I got prescribed Naproxen and Diazepan for back pain a while ago. I am experiencing the same back pain again and want to take them as they helped me before, but it says on the label "discard after september 2006" does anyone know if I can take them..will they harm me? or just lose effectivness? thankyou!

2007-01-12 07:24:24 · 9 answers · asked by Gem 2 in Medicine

9x+7=5x-3

2007-01-12 07:24:21 · 12 answers · asked by Anonymous in Mathematics

A saleswoman normally visits 60 homes in a week. She has a 20% chance of making a sale (indepent events)

If the woman was to only visit 12 homes, what is the probability of her making more than 6 sales?

2007-01-12 07:22:30 · 3 answers · asked by Gimwabe 1 in Mathematics

The first side of a triangle measures 5 in. less than the second side, the third side is 3 in. more than the first side, and the perimeter is 17 in. How long is the third side?

2007-01-12 07:21:54 · 5 answers · asked by Anonymous in Mathematics

2007-01-12 07:21:24 · 14 answers · asked by Anonymous in Physics

Hi my name is Chloe and i'm 8,
My Mummy doesn't know the answer,
Can you help me ???

2007-01-12 07:21:19 · 22 answers · asked by Elle J Morgan 6 in Astronomy & Space

moving charges/current creates a magnetic field around the conductor.so why dosent an electron?if it does why arent all objects magnetic?

2007-01-12 07:18:28 · 13 answers · asked by leo 1 in Physics

2007-01-12 07:15:57 · 8 answers · asked by Alexia C 1 in Mathematics

how do I solve this:

find the definite integral from 1 to 2 of the equation:

( [2*ln(x)]/x ) * dx

I know that if i needed to find the integral of (x'/x) then it would just be ln|x| + C...but the bottom of THIS equation's derivative does not equal the top!

2007-01-12 07:14:03 · 7 answers · asked by rrossorr 3 in Mathematics

Think a number
Multiply it by 2
Add 10 to the result
Then divide it by 2
Subtract the number you thought in the beginning from the result
Answer will be ALWAYS 5.....!!!!
Do u know how it comes...????

2007-01-12 07:09:42 · 19 answers · asked by Anonymous in Mathematics

I have a pint of 91% solution; how much water I need to add to get a 40% solution?

For extra credit, guess the name & use of the resulting substance.

2007-01-12 07:06:18 · 4 answers · asked by Anonymous in Mathematics

2007-01-12 07:05:26 · 11 answers · asked by Andy C 1 in Engineering

2007-01-12 07:04:54 · 13 answers · asked by the_thinker 2 in Astronomy & Space

2007-01-12 07:04:29 · 13 answers · asked by beatnik73 2 in Zoology