Science & Mathematics - 3 September 2007

. 15. some 3 pairs of white socks, 4 pairs of red
socks and
2 pairs of black socks among that what is the
probability that
correct pairs can be taken out?

2007-09-03 16:56:55 · 5 answers · asked by Anonymous in Mathematics

I know what a geode is I mean is it igneous metamorfic sedementary or what?

2007-09-03 16:56:11 · 7 answers · asked by Anonymous in Earth Sciences & Geology

The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 mm long. The bullets leave this barrel with a muzzle velocity of 335 m/s .
What is the acceleration of the bullet while it is in the barrel, assuming it to be constant? Express your answer in m/s2 .
I don't know how to get the answer in m/s2, can anybody help me?

2007-09-03 16:52:21 · 1 answers · asked by osu9295 1 in Physics

2007-09-03 16:47:19 · 14 answers · asked by Anonymous in Astronomy & Space

I don't know how they are coming up with the table of values for graphs like this. "r(t)=" or "r(t)=". My book doesn't explain. It just says "We can make a able of values, or we can eliminate the parameter...." I just can't visualize this stuff. Please help, I'm lost!

2007-09-03 16:47:11 · 2 answers · asked by Kayla G 1 in Mathematics

questions

2007-09-03 16:46:04 · 10 answers · asked by Teri H 1 in Mathematics

from 30 mph to 75 mph in 22 sec, determine her acceleration in units of ft/sec/sec.
hint: 60 mph=88 ft/sec

2007-09-03 16:43:11 · 2 answers · asked by sdt3 1 in Mathematics

can someone pls explain how to do this crazy equation:

"a rectangle, which is on the 1st quadrant, has one corner on the graph of y=25-x^2, another at the origin, a third on the positive y-axis, and the fourth on the positive x-axis.
1) express the distance 'D' from the point 'P,' which is a corner of the rectangle on the graph, to the origin 'O' as a function of 'X.'
2) express the area of the rectangle 'A' as a function of 'X'
3) what is the domain of 'A'
4) graph A = A(x) "

lol

2007-09-03 16:34:48 · 1 answers · asked by nasgmx,zncv xc 2 in Mathematics

A. RNA, translation, DNA, transcription
B. DNA, transcription, RNA, translation
C. DNA, translation, RNA, transcription
D. RNA, transcription, DNA, translation

2007-09-03 16:31:52 · 2 answers · asked by Anonymous in Biology

I need help on my math
the problem is
[x^(-2) - y^(-2)]/[x^(-1)+y^(-1)] and i'm suppose to simplify the fractional expression. the answer is (y-x)/(xy). how do i get that answer?

2007-09-03 16:31:06 · 4 answers · asked by Anonymous in Mathematics

ok this is the question....I am checking my daughters homework and I want to make sure it is right......


The sum of my two digits is 13. I am not divisible by 2. List all possible numbers I could be.

Answer__________

Wouldn't that be 6 and 7 .....or 10 and 3 etc...?

2007-09-03 16:30:59 · 4 answers · asked by Angel girl 4 in Mathematics

its an easy question i know, but i dont get it

"the perimeter of a rectangle is is 50 ft. express its area 'A' as a function of length 'L' of a side"

2007-09-03 16:30:57 · 3 answers · asked by nasgmx,zncv xc 2 in Mathematics

I can see what looks like a very, very bright star in the southwest part of the sky the past few nights. I'm on the east coast of the US. Is that a planet?

2007-09-03 16:30:52 · 8 answers · asked by Lefty 2 in Astronomy & Space

2007-09-03 16:30:36 · 6 answers · asked by bianca marie 1 in Astronomy & Space

A concert promoter estimates that if he sells tickets at a price of $15 each, he will sell 200 tickets. For each dollar that he decreases the price he will sell 20 more tickets. Express the total revenue R from ticket sales as a function of the ticket price p. Graph the result and estimate the optimum ticket price.

My ANSWER:

x,y
15, 200

slope= -20

200= -20(15)+b

200+300=b
b=500

Equation for price: (p) -20x+500

Equation for Revenue: ???

How do you write the Revenue function as a function of the ticket price p?

2007-09-03 16:27:39 · 1 answers · asked by Anonymous in Mathematics

I can see the physical evolution of how we came from monkeys,no problem. My question is how can monkeys still exist if we evolved from them? Usually when a particular species evolve,the initial one no longer exists(specifically because they have evolved). For example, snakes had legs before and there is no existing species of snake with legs.

2007-09-03 16:27:20 · 10 answers · asked by Anonymous in Biology

can you convert 96 degrees fareinheit into celsius

Thanx :)

2007-09-03 16:25:29 · 10 answers · asked by hello 2 in Mathematics

1: Determain the amount of time it takes Shawn to drive from Little Rock to Siloam Springs. Show or Explain all of your work even if you used a calculator. Round answer to nearest tenth of an hour.

2007-09-03 16:25:20 · 2 answers · asked by katelin e 1 in Geography

A carbon skeleton is covalently bonded to both an amino group and a carboxyl group. When placed in water it...

a. would function only as an acid because of the carboxyl group
b. would function only as a base b/c of the amino group
c. would function as neither an acid nor a base
d. would function as both an acid and a base
e. is impossible to determine how it would function

2007-09-03 16:24:26 · 1 answers · asked by couturechic16 1 in Chemistry

Kathy Kool buys a sports car that can accelerate at the rate of 4.70 m/s2. She decides to test the car by dragging with another speedster, Stan Speedy. Both start from rest, but experienced Stan leaves the starting line 1.00 s before Kathy. Stan moves with a constant acceleration of 3.80 m/s2, and Kathy maintains an acceleration of 4.70 m/s2.
(a) Find the time it takes Kathy to overtake Stan.
s
(b) Find the distance she travels before she catches him.
m
(c) Find the speeds of both cars at the instant she overtakes him.
Kathy
m/s
Stan
m/s

2007-09-03 16:13:21 · 1 answers · asked by justin l 1 in Physics

1). A motorist is traveling at 18.2 m/s when he sees a deer in the road 38.1 m ahead.

(a) If the maximum negative acceleration of the vehicle is -4.50 m/s2, what is the maximum reaction time t of the motorist that will allow him to avoid hitting the deer?
s
(b) If his reaction time is actually 0.300 s, how fast will he be traveling when he hits the deer?
m/s

2)An inquisitive physics student and mountain climber climbs a 50.0 m cliff that overhangs a calm pool of water. He throws two stones vertically downward, 1.00 s apart, and observes that they cause a single splash. The first stone has an initial speed of 2.00 m/s.
(a) How long after release of the first stone do the two stones hit the water?
s
(b) What was the initial velocity of the second stone?
m/s (downward)
(c) What is the velocity of each stone at the instant the two hit the water?
first stone
m/s (downward)
second stone
m/s (downward)

2007-09-03 16:10:27 · 1 answers · asked by justin l 1 in Physics

2007-09-03 16:09:59 · 5 answers · asked by bella 2 in Geography

2007-09-03 16:03:14 · 3 answers · asked by Anonymous in Zoology

√3y+7=5 the solution is y=

2007-09-03 16:01:25 · 3 answers · asked by Anonymous in Mathematics

2007-09-03 15:56:47 · 5 answers · asked by pumpkin 4 in Astronomy & Space

what is the GCF for qb+qc-qd? Help please

2007-09-03 15:53:42 · 2 answers · asked by Juan 1 in Mathematics

please show me how to do one of these: 7√125+8√180=

2007-09-03 15:53:34 · 2 answers · asked by Anonymous in Mathematics

A laundry tubhas a capacity of 67 L. If you fill it up with 37 L of water. Will it overflow if you submerge a steel drum with a diameter of 19 cm. and a length of 102 cm.??
Thanks

2007-09-03 15:52:28 · 3 answers · asked by coolhomie9 1 in Chemistry

If Salt dissolves in water what does that mean? What does it mean that poppy seeds will float in water?

2007-09-03 15:48:38 · 4 answers · asked by Brittney 2 in Chemistry

2007-09-03 15:46:46 · 5 answers · asked by terryanne44 1 in Mathematics