Science & Mathematics - 7 November 2007

Mark works for a caterer in Berrygood on the weekends. He uses a 12 inch round platter of different chesses he assembled. What is the surface area of the section of the platter if it is less than half of the whole platter and it is 144 degrees? Answer if you dare

would it be 15.07 or 90.43, or 45.22, or 180.86, or none of the above?
limited amount of time to answer! So hurry!

2007-11-07 13:54:36 · 3 answers · asked by Sellie 2 in Mathematics

2007-11-07 13:54:26 · 5 answers · asked by dannables13 1 in Biology

With the load being a UPS(back up power) and a camera, do you size your branch circuit breaker/condutor for just the camera power or for both the UPS and camera power?

2007-11-07 13:54:24 · 2 answers · asked by Anonymous in Engineering

a^n is negative when blank because blank
a^n is positive when blank becasue blank

thanks for help

2007-11-07 13:54:14 · 8 answers · asked by redbone001 1 in Mathematics

2007-11-07 13:50:29 · 11 answers · asked by S i r i 1 in Medicine

You drive 90m along a hwy and then take a 5 mile run. Your driving rate is 9 times that of your running rate. (there is a graph with points aprox.(1.7, 8) (3,5) (5,3) (7,2) (11,1.5)

The function supplied is:
f(x)= 90/9x + 5/x = 15/x

the question askes
Descrive your running rate if you have no more than a total of 5hrs of running and driving. Use a rational inequality to solve the problem.

If I could get a setup I believe I could solve this.

2007-11-07 13:47:41 · 2 answers · asked by Happy Killa Pants 2 in Mathematics

6x^2-31x+28=0


answers given are x=4 and 7/6

2007-11-07 13:45:56 · 1 answers · asked by Anonymous in Mathematics

A 27.0 g sample of an unknown hydrocarbon was burned in excess oxygen to form 88.0 g of carbon dioxide and 27.0 grams of water. What is a possible molecular formula for the hydrocarbon?

A. CH4
B. C2H2
C. C4H3
D. C4H6
E. C4H10

2007-11-07 13:45:27 · 2 answers · asked by Anonymous in Chemistry

please answer only if you know...

2007-11-07 13:44:11 · 3 answers · asked by Anonymous in Earth Sciences & Geology

I.E. using 3rd law of motion (4 every action there is an equal and opposite reaction.

What I need to know is how this is applied to a rollar coaster, more specifically marble one.

2007-11-07 13:43:18 · 13 answers · asked by ✔ 5 in Physics

This is the entire question: A 9.0 g coin moving to the right at 25.0 cm/s makes an elastic head-on collision with a 19.0 g coin that is initially at rest. After the collision, the 9.0 g coin moves to the left at 12.5 cm/s.


Find the amount of kinetic energy transferred to the 19.0 g coin.

the final velocity is 17.76 cm/s to the right

Im trying to find the Kinetic energy transferred to the 19g or .019kg coin.
Please help me, i am a very confused asian boy.

2007-11-07 13:42:57 · 1 answers · asked by Troubled 3 in Physics

are they all female,chickens?
if so people that have these layers....do they need a rooster to produce eggs?for laying.?
please educate me.....

2007-11-07 13:42:27 · 6 answers · asked by jojoggers 3 in Zoology

1. What carbon-based molecule is DNA?
2.What are three parts of one nucleotide?
3.How are nitrogen containing bases connected to each other?

2007-11-07 13:42:16 · 4 answers · asked by ☮ 4 in Biology

sixty liters of a gas were collected over water when the barometer read 670 mm Hg and the temperature was 20 degrees celsius. What volume would the dry gas occupy at standard conditions?

2007-11-07 13:40:07 · 2 answers · asked by cal 123 1 in Chemistry

2007-11-07 13:38:27 · 9 answers · asked by blue prince cupid 1 in Astronomy & Space

2007-11-07 13:37:28 · 2 answers · asked by efronwannab 1 in Earth Sciences & Geology

can you help me i have to do an assignment at school about bacteria but i have no idea of what it is.... plz help

2007-11-07 13:36:21 · 3 answers · asked by Tommy 1 in Biology

i have the reactants but i cannot figure out the product.

HC2H3+ NaHCO3----->

can someone help?

2007-11-07 13:36:06 · 2 answers · asked by Anonymous in Chemistry

what are some negative human impacts on arctic foxes, how is it coping with the impacts?

2007-11-07 13:35:33 · 3 answers · asked by Anonymous in Other - Science

Does anybody know the answer for this question? Thanks;)

2007-11-07 13:35:26 · 3 answers · asked by G@BY 1 in Astronomy & Space

Please help. :)

2007-11-07 13:33:05 · 2 answers · asked by Kelvin 2 in Biology

account for the extremely thin atmosphere that was found around the planet in 1985?


Does anybody know the answer for this???Please help!Thanks:)

2007-11-07 13:30:39 · 6 answers · asked by G@BY 1 in Astronomy & Space

A main claims to be able to distinguish between scotch and bourbon 80% of the time. A test of 15 samples is given to him and, if he is correct at least 12 times he proves his claim. What is the probability his claim is justified, but he doesnt pass the test?

2007-11-07 13:28:37 · 2 answers · asked by amshamah 3 in Mathematics

now x=2
1.4x+9x+8x=
2.-6x+11x+(-2x)=
3.-3x+8+2x+(-3)=
4.11x+(-5)-3x=
5.-13x+15x-6=

2007-11-07 13:27:43 · 8 answers · asked by Alexia M 1 in Mathematics

Perhapse we are at the center of the universe thanks be to God.
1984, after decades of,,,,,,,Uhm,,,,,, nothing, Seti decides to open up all of their resources to over 3 million home participants, to help search the cosmos and still 'Not even a ping'. Whats up with that?
Dawgonnit! 50+ years of searching the cosmos, a 6.5+ billion year old universe with literally millions of civilizations out there that have come and gone and none!,,,,,,,,, not one,,,, ever sent one single signal? In 6.5 billion years one would think a signal could travel quite a ways. One would think at least a ping would have arrived here by now. Seti and its home project have logged over 160,000 years of computing time making it the largest computation ever done. Ping? If intelligent life here on earth just occured by happenstance, surley it occured all over our galaxy and universe. Or did it? Ping?

2007-11-07 13:27:10 · 9 answers · asked by Anonymous in Astronomy & Space

How do we do these?

Determine whether a quadratic model exists for each of values. If so, write the model.
A. f(0) = 5, f(20 = 3, f(-1) = 0

Dont they need like a ^2 to be quadratic?

2007-11-07 13:26:49 · 1 answers · asked by Joah 3 in Mathematics

i need to prove that the series n^2 / ((n^4) +1) converges

how do i go about doing this? should i reduce the function first?? And what function do i compare it to?
NOTE: I must use the comparison test.

2007-11-07 13:25:24 · 5 answers · asked by starz8 2 in Mathematics

2007-11-07 13:23:28 · 1 answers · asked by La la 3 in Biology

2007-11-07 13:19:17 · 7 answers · asked by Anonymous in Zoology

...describe the unique roles of P680 and P700 in the photoreduction of NADP+.

2007-11-07 13:19:03 · 1 answers · asked by Anonymous in Biology