Mathematics - 31 December 2007

SHOW ALL WORK!!

Answer choices are...

A. y = x - pi
B. y = pi/2
C. y = pi - x
D. y = x + Pi/2
E. y = x

2007-12-31 13:54:46 · 4 answers · asked by Anonymous

Hint: write as a quadratic as 2^x

2007-12-31 13:35:39 · 11 answers · asked by Anonymous

2007-12-31 13:34:03 · 1 answers · asked by Anonymous

This might be a rule, but i'm not sure

Show all work...

the choices are..

A. -1
B. 0
C. -2sin(2x)
D. -2(cosx + sinx)
E. 2(cosx - sin x)

2007-12-31 13:12:16 · 5 answers · asked by Anish C 1

Need help learning HOW to multiply mixed numbers. Here's one of the problems:

4 2/7 x 6 2/5

2007-12-31 12:44:50 · 12 answers · asked by fwerds 2

two factories manufacture electric bulbs, 7% of the bulbs from factroy A and 10% of the bulbs from factory b are defective . factory B produces three times as many as bulbs as factory A each week. A bulbs is chosen at random from the week's production.

1- what is the probability that the bulb is satisfactory?

2- if the bulbs is defective, what is the probability that it came from factory A?

3- if two bulbs are chosen at random, what is the probability that they are both from factory B, knowing that the first is defective while the second is satisfactory?

2007-12-31 12:17:12 · 3 answers · asked by Anonymous

Solve the system by addition. 2x + y = 4 x + y = 3

2007-12-31 12:04:38 · 6 answers · asked by cutter1890 1

i feel soo stupid...

2007-12-31 11:48:11 · 9 answers · asked by Anonymous

can you please show me the steps.thank you

2007-12-31 11:47:41 · 10 answers · asked by dmurray032 1

please can you show me the steps.thank you

2007-12-31 11:46:22 · 8 answers · asked by dmurray032 1

2007-12-31 11:37:31 · 6 answers · asked by dmurray032 1

I recently got my AP Calc. final exam results and I want to know how exactly to do the problems I kept getting wrong.

2007-12-31 11:29:42 · 10 answers · asked by Shay 1

A rooster layes 12 eggs into a basket. That number of eggs is divided by 3, then multiplied by 17, and the square root of 64 is added. How many eggs are their now?

2007-12-31 11:25:39 · 6 answers · asked by Chuck N 2

2007-12-31 11:24:01 · 4 answers · asked by flowerlegz 3

No one had an answer, the last time I asked this....

I am looking for an unproven conjecture, that has a name (like "Fermat's Last Theorem"), as well as the name of the mathematician that first posed it.

2007-12-31 11:19:27 · 2 answers · asked by Anonymous

Can someone please explain to me how imaginary numbers work, how you square them, etc? A thorough explanation in other words, in simple terms. Please don't direct me to Wikipedia or something. I can't understand it.

2007-12-31 11:18:33 · 9 answers · asked by Darrol 3

2007-12-31 11:15:35 · 29 answers · asked by Shamaya M 1

I have a question to do. Simple, but theres something im stuck on.

The curve C has the equation:
Y = 4x^2 + (5-x)/x

The point P lies on C, and has x-coordinate 1.

a) Show that the value of dy/dx at P is 3


Ive tried it, and i keep getting 4...is the gradient really 3? If so, could you show me how?

2007-12-31 11:13:34 · 4 answers · asked by Anonymous

2007-12-31 11:06:47 · 16 answers · asked by Shamaya M 1

2007-12-31 10:36:54 · 5 answers · asked by mathstudent 2

here is the problem:

90*(.9572^x)+
80*(.0214^x)+
80*(.0214^x) =100

now...solve for x (the equation is all one line, but the formatting gets screwed up!)

i tried to take the log of both sides, but i think that's wrong.

(note: here is why... log (a + b + c) does not equal log(a) + log(b) + log(c)... try it with a=20, b=40, c=50.... log (a + b + c) = log(110) which is not the same as log(20)+log(40)+log(50)... i think this is the key to the problem.... in the equation above, you have a similar situation where there are 3 terms that are added together....)

if anyone can show me how to solve for x it would be much appreciated!!!

2007-12-31 10:27:31 · 6 answers · asked by Anonymous

consider the list of the grades 15, 25, 52, 14, 35, 42, 25 then the quadruple ( mean, median, standard deviation, interquartile range is

1- ( 27, 25, 14, 29.5)
2- (29.7, 25, 13, 27)
3- (27, 25, 13, 29.5)
4- (29.7, 25, 14, 27)

2007-12-31 10:26:18 · 4 answers · asked by fox 1

The slope is supposed to be the recipricol of the original slope, i have an answer but i am still confused..this is what i got


y2 - y1 = -2 -2 =-4 = -2
--------- ------ --- ---
x2-x1 = 0+2 = 2 = 1


is -2 the answer or the RECIPROCAl 2?

2007-12-31 10:22:28 · 5 answers · asked by th31N0nliigiRl 1

2007-12-31 10:18:16 · 11 answers · asked by Anonymous

Solve.
-2(x-3)=-3(-8)

2007-12-31 10:12:55 · 15 answers · asked by jessika 4

Find dy/dx.
y = x^3(2x - 7)^4

2007-12-31 10:06:21 · 3 answers · asked by spksccrchica216 1

find the solution set in a+bi form: x^2 +6x +12 =0
you dont have to show the work because i have the answer i just wanna check it.., thanks -D

2007-12-31 10:06:07 · 3 answers · asked by luhb u much!! 4

this problem is based on pythagorean theorem.. which i don't get at all... :(

1. Gulido Palumbo is a Venetian gonodolier. Gulido needs to know how deep it is in front of his pier. he notices a water lily sticking straight up from the water with the blossom 18 cm above the surface. Gulido then pulls the lily to one side, keepin the stem straight, untill the blossom touches the water at spot 36 cm from where the stem first broke the surface. from this data, Gulido is able to calculate the depth of the water.

a. what is the depth of the water?

b. if the lily was only 12 cm from the water when sticking straight up and the depth of the water has not changed, what would tbe the distance when Gulido pulls the lily untill the blossom touches the water?

2007-12-31 10:04:37 · 3 answers · asked by hey 3

2007-12-31 10:01:38 · 9 answers · asked by Damian M 1

How would you solve this problem using 2 equations with 2 variables?

Loren's marble jar contains plain marbles and colored marbles. If there are 32 more plain marbles than colored marbles and there are 180 marbles in the jar, how many colored marbles does Lauren have?

2007-12-31 09:59:11 · 3 answers · asked by San Fran Kid 2