Science & Mathematics - 7 February 2007

Please answer in detailed mathematical reasoning.

1. Which is the least positive integer meeting each of the following conditions?
a. Dividing by 7 gives a remainder of 4
b. Dividing by 8 gives a remainder of 5
c. Dividing by 9 gives a remainder of 6

2. Arrange the numerals 1 through 16 in a 4*4 square so that each row and each column add up to the same sum.

3. The Davis family drove 116 mi to see birds. Then they returned home. If they used 8.0 gallons of gas, what was the average miles per gallon for the trip?

2007-02-07 14:39:47 · 4 answers · asked by Anonymous in Mathematics

2007-02-07 14:38:02 · 4 answers · asked by Anonymous in Earth Sciences & Geology

What is the ∂ called for partial derivatives in multivariable calculus, as in ∂f/∂x.

2007-02-07 14:36:32 · 13 answers · asked by Tony O 2 in Mathematics

You are on roller blades on top of a large hill. Your potential energy is equal to 1000 joules. Your mass is 60 kg.
What is your weight in Newtons?
What is the height of the hill?

Any help would really be appriciated. I really don't understand this stuff.

2007-02-07 14:35:56 · 3 answers · asked by Jewel 2 in Physics

2007-02-07 14:35:14 · 17 answers · asked by JANE 1 in Weather

scary? fun? give a little detail...

2007-02-07 14:33:44 · 6 answers · asked by pink_peas624 3 in Earth Sciences & Geology

i need it for a lab report due tomarrow :O

2007-02-07 14:33:06 · 3 answers · asked by pooper scooper 1 in Chemistry

What is the change in the (liquid) water's temperature if the engine operates until 836000 J of Heat are added? I don't know the formulas need help.

2007-02-07 14:32:16 · 2 answers · asked by Eric 1 in Physics

...similiar to X-Men type scenario with some of those abilities. Some say a type of evolution will happen when the human genome is entirely mapped. Will people be able to download organicaly vast amounts of kowledge?

2007-02-07 14:31:47 · 3 answers · asked by esha26 1 in Other - Science

2007-02-07 14:31:44 · 3 answers · asked by Jen 5 in Medicine

This is a trick answer, and don forget your power factors.
Computer draws 450 watts, printer draws 1.5 amps, monitor is 1.5 amps and your constant is 120 Volts AC. Your Power factor is .778

I want 60 min. run time full load.
What is the cheapest route.?

2007-02-07 14:30:21 · 3 answers · asked by John P 2 in Engineering

does all the original material get replaced? What minerals take their place. how long does the process take. does fossilization occur today?

2007-02-07 14:30:12 · 4 answers · asked by heinsight 1 in Earth Sciences & Geology

im just curious

2007-02-07 14:29:32 · 7 answers · asked by STOTES 1 in Physics

I now have to do a mouse trap car project, and it occured to me that to really get the fastest, most accurate, or strongest mousetap car, it would be helpful to know the exact force that a mousetrap exerts. I realize different mousetraps have different forces, but does anyone know what the force of a mousetrap is, or where to find it, or how to find it?

2007-02-07 14:26:14 · 3 answers · asked by lord_erico 2 in Physics

2007-02-07 14:26:13 · 12 answers · asked by cloudyskies 3 in Other - Science

2007-02-07 14:25:48 · 3 answers · asked by krebsgirl18 1 in Chemistry

Could two humans, (or two cows) have some differences in their DNA sequences for insulin, yet still make the exact same insulin proteins?

2007-02-07 14:25:41 · 3 answers · asked by redneckproud92 1 in Biology

Here's what I got from Wikipedia, "Although a nut in the culinary sense, in the botanical sense the fruit of the peanut is a woody, indehiscent legume or pod and not a nut."

So which is it? Is it both?

2007-02-07 14:24:47 · 11 answers · asked by DotComThousands 1 in Botany

2007-02-07 14:24:35 · 4 answers · asked by zzzz42 2 in Biology

how do i factor that and are there any tests involving derivatives that i could use to "classify" their multiplicity? im stuck

2007-02-07 14:24:34 · 3 answers · asked by sammyd 2 in Mathematics

cite some examples which proves that superstitious beliefs are merely imagination??

2007-02-07 14:24:24 · 1 answers · asked by MAUI 1 in Other - Science

A 1.03 kg beaker containing 1.5 kg of oil of density 900kg/m^3 rests on a scale. A 2.31 kg block of iron is suspended from a spring scale and is completely submerged in the oil. The acceleration of gravity is 9.8m/s^2. The density of the iron is 7860kg/m^3. Find the equilibrium reading of the lower scale. Answer in units of N.

2007-02-07 14:24:22 · 1 answers · asked by neena m 1 in Physics

2007-02-07 14:23:07 · 3 answers · asked by Anna H 1 in Zoology

the numbers are:
72,35,64,10,2,62,79,136,41,13,39,48,91,151,98,2,38,16,85,166,164,31,7,4,
please give me the answer fast!!!!!

2007-02-07 14:22:48 · 17 answers · asked by zero_zzero287 1 in Mathematics

I have to come up with two methods of how mullosks eat. I also have to have 6 sentences about each. So please help me? Thanks.

2007-02-07 14:22:44 · 2 answers · asked by georgia_gurl345 2 in Biology

We are mammals arent we? Aren't we the only mammal without fur?

2007-02-07 14:20:52 · 10 answers · asked by Anonymous in Botany

A water hose 2.3 cm in diameter is used to fill a 13.8 L bucket. One liter is equal to 1000Cm^3. If it takes 2.34 min to fill the bucket, what is the speed at which the water leaves the hose? Answer in units of cm/s.

2007-02-07 14:20:20 · 4 answers · asked by neena m 1 in Physics

2007-02-07 14:19:57 · 3 answers · asked by L S 1 in Botany

2007-02-07 14:19:50 · 5 answers · asked by Hollister fanatic 1 in Geography

2007-02-07 14:19:28 · 31 answers · asked by Anonymous in Mathematics