Science & Mathematics - 7 September 2007

a. 5! + 7!
b. 3^7 - 1
c. 2^7 - 1
d. 54321
e. 12357

can you please explain how you found the answer (without calculator?)

Thank you

2007-09-07 07:38:07 · 10 answers · asked by єуℓüℓ 4 in Mathematics

2007-09-07 07:35:45 · 5 answers · asked by Anonymous in Mathematics

2007-09-07 07:33:11 · 13 answers · asked by shahitheprincess 2 in Biology

x(t) = v0/k * ( 1 - e^(-kt) ), where v0 and k are constants.

a) If k = 2, how long does it take the velocity to slow to 1/100 of its original velocity?

b) Show that the acceleration is directed opposite to the velocity and has a magnitude proportional to the speed.

Thanks in advance.

2007-09-07 07:32:46 · 3 answers · asked by MathGuy 6 in Physics

why must you never just turn off the switch instead of tripping the circuit breaker or removing the fuse.

2007-09-07 07:27:39 · 2 answers · asked by princess 2 in Physics

This isn't a homework question. The vet's papers said my dog weighed 47 killagrams. I'd like to know what that is in pounds. Thanks for your help.

2007-09-07 07:23:37 · 12 answers · asked by Tasha 4 in Mathematics

Is there any device for finding out any kind of fault in an electricity line of 11000 kva?

2007-09-07 07:22:49 · 3 answers · asked by Anonymous in Engineering

if u know about buffy coat and its applications
if there is a site providing more informations plz
thanks for reply

2007-09-07 07:18:05 · 2 answers · asked by madazizo 2 in Medicine

I think he invented transformer (ac - dc) but not credited.

2007-09-07 07:15:43 · 11 answers · asked by Astarte 1 in Engineering

If g(x) = x ^2 + 2x, x ≥ 0, find g ^-1(3).

a. g^ -1(3) = -3
b. g ^-1(3) = -1
c. g ^-1(3) = 1
d. g ^-1(3) = 3
e. g^ -1(3) = 5

2007-09-07 07:12:54 · 3 answers · asked by Anonymous in Mathematics

Express the quadratic function f(x) = - x ^2 + 4x - 12 in standard
form.

a. -(x - 2) ^2 - 8
b. -(x + 2)^2 - 14
c. (x + 2) ^2 + 12
d. -(x - 4) ^2 - 2
e. (x - 4) ^2 - 24

2007-09-07 07:11:10 · 5 answers · asked by Anonymous in Mathematics

Decide which of the following viewing rectangles produces the
most appropriate graph of the function
f(x) = (120 - x ^3 )(square root).

a. [-2,4] by [-2,4]
b. [-10,12] by [-12,20]
c. [-8,6] by [0,25]
d. [-120,100] by [-20,50]
e. [-60,300] by [-4,4]

2007-09-07 07:09:51 · 3 answers · asked by Anonymous in Mathematics

Find the domain of the function
h(x) = (6 - x)(square root) + (x^ 2 - 4)(square root) .

a. (-∞,6]
b. (-∞,-6] ∪ [0,6]
c. (-∞,0] ∪ [2,6]
d. (-∞,-2] ∪ [2,6]
e. [2,6]

2007-09-07 07:09:49 · 3 answers · asked by Anonymous in Mathematics

just curious!

2007-09-07 07:09:21 · 4 answers · asked by Anonymous in Physics

2007-09-07 07:04:18 · 14 answers · asked by Anonymous in Biology

Show work please! I'M CONFUSED ....

2007-09-07 07:04:05 · 7 answers · asked by nealee 2 in Mathematics

2007-09-07 07:03:23 · 3 answers · asked by B 3 in Biology

does any one believe these un earthly beings live

2007-09-07 07:03:20 · 12 answers · asked by edward_church2000 2 in Astronomy & Space

2007-09-07 07:02:36 · 5 answers · asked by Amelia E 1 in Earth Sciences & Geology

Canadian dollar $40
British pounds 18.7194

How much money is the british pounds?...I hate math.
$18.71 but its just a guess.

2007-09-07 07:01:08 · 4 answers · asked by vagg 2 in Mathematics

2007-09-07 07:00:47 · 1 answers · asked by Anonymous in Engineering

2007-09-07 06:57:11 · 9 answers · asked by jonathanrovillard 2 in Astronomy & Space

2007-09-07 06:56:32 · 6 answers · asked by Anonymous in Mathematics

The first several digits of pi are known to be = 3.14159265358979....

A.)What is pi to 2 significant figures?
B.)What is pi to 9 significant figures?
C.)What is pi to 12 significant figures?

Question B: How many significant figures are there in the following two numbers?

(a) 0.00043

(b) 7.3650 10^2?

Thanks for your help! :)

2007-09-07 06:53:52 · 8 answers · asked by PaNaSoNiCeDgE 1 in Physics

Find the domain and range of the function:
G(x) = (x^ 2 - 16)(square root)

a. Domain (-∞,-4] ∪ [4,∞), Range [4,∞)
b. Domain (-∞,-4] ∪ [4,∞), Range [-4,∞)
c. Domain (-∞,-4] ∪ [4,∞), Range [0,∞)
d. Domain (-∞,-2] ∪ [2,∞), Range [2,∞)
e. Domain (-∞,∞), Range [0,∞)

2007-09-07 06:53:49 · 4 answers · asked by Anonymous in Mathematics

1. If the hydroxide ion concentration of a solution is 3.68 x 10-2 M, what is the hydrogen ion concentration and pOH?

2. If the hydrogen ion concentration of a solution is 9.58 x 10-5 M, what is the pOH and hydroxide ion concentration?

3. When the pOH = 10.5, what is the hydroxide ion concentration?

4. The hydrogen ion concentration of a solution is 6.25 x 10-12 M, what is the hydroxide ion concentration, pH, and pOH?


Please, help me with these.

2007-09-07 06:53:29 · 1 answers · asked by Anonymous in Chemistry

Why are there still monkeys if we evolved from them? Surely they would no longer exist.

2007-09-07 06:52:35 · 12 answers · asked by Anonymous in Biology

What spectrum does these elements fall in...

a) mercury

b) hydrogen

c) helium

d) sodium

e) white light

2007-09-07 06:51:18 · 1 answers · asked by Anonymous in Chemistry

When did man realize they could extract the THC out of the plant, then smoke it to get high.

2007-09-07 06:51:05 · 3 answers · asked by Anonymous in Botany

Question posed to atheists, from an actual occurrence!
--Newton once had a skilled mechanic make for him a model of the solar system. Balls representing the planets were geared together so as to move realistically in orbit. One day an atheist friend visited Newton. On seeing the model, he operated it, and exclaimed in admiration, “Who made it?” Newton answered, “Nobody!” The atheist replied, “You must think I am a fool! Of course somebody made it, and he is a genius.” Newton then said to his friend, “This thing is but a puny imitation of a much grander system whose laws you know, and I am not able to convince you that this mere toy is without a designer and maker; yet you profess to believe that the great original from which the design is taken has come into being without either designer or maker!”
--Newton’s friend made a complete about face, with humility!
**What about atheists of today , do they lack the reasonableness that they claim true believers in the God of the Bible lack?

2007-09-07 06:50:34 · 16 answers · asked by THA 5 in Astronomy & Space