Mathematics - 21 September 2007

A. 94
B. 87
C. 440
D. 88

2007-09-21 17:53:23 · 12 answers · asked by Anonymous

What is the value of A in the equation:
-9+-9i = A x e ^ (i \phi)

What is the value of phi in the equation:
4.5 + 3.6i = A x e ^ (i \phi)
answer in degrees or specify the unit "rad" to give it in radians

regards,

2007-09-21 17:39:12 · 2 answers · asked by dark88 1

2007-09-21 17:34:50 · 10 answers · asked by jatin b 1

i need to find
limit
x-> 2.5

25 - 4x^2 / 2x + 5

can i do this on a calculator?

2007-09-21 17:23:32 · 3 answers · asked by Anonymous

this is homework please help me!

2007-09-21 17:07:19 · 13 answers · asked by Tracey Fahnestock 1

limit as x approaches pi over 4

(6-6tanx)/(sinx-cosx)

Viewed here:
http://www.webassign.net/www30/symImages/8/7/963e6bbedc1066a3f330318bdbbc5f.gif

2007-09-21 17:06:25 · 2 answers · asked by ILuvTaraReid 2

2007-09-21 17:05:37 · 3 answers · asked by Anonymous

Question One:(2,4) and (-6, -3)


Question Two: (2,1) and (2, 7)

2007-09-21 17:03:50 · 7 answers · asked by yeahyeahyeah 4

2007-09-21 16:58:46 · 3 answers · asked by chum mink 1

Need more understanding on some more inequalaties and how you get them( dont think im stupid because i could do these using basic logic, its jsut that i want to know how to use the formulas to solve them.2 - x = 2 on this one i add 2 to both sides and end up with x = 4. i know this isnt the right answer. The next one is -8 - b = 11 i add 8 to 11 and get b = 19 but this isnt the right answer and i know this. how do i know if i add a ngative to the number on the other side, or add a positive, or vice versa. please help me out with this people. thank you everyone.

2007-09-21 16:55:20 · 9 answers · asked by Anonymous

If you are going to bake something that needs to cook at 200 degrees celsius but your oven is calibrated in farenheit, what temperature do you use?

2007-09-21 16:43:59 · 11 answers · asked by LydonPuggles 2

the limit as x approaches 8

function: sin (x-8)/(X^2-2x-48)

you can view it here:
http://www.webassign.net/www28/symImages/5/1/1a1872403cd882533309a7f2a07592.gif

Thanks. If you could please explain or show work, I'd appreciate it.

2007-09-21 16:42:19 · 3 answers · asked by ILuvTaraReid 2

2007-09-21 16:41:16 · 6 answers · asked by yeahyeahyeah 4

p = -x/2 + 75. Find the unit price when the following quantities are sold: 2, 7, 9, 11.

2007-09-21 16:32:21 · 5 answers · asked by yeahyeahyeah 4

Write the equation of the line which has y-intercept (0, 5) and is perpendicular to the line with equation y = –3x + 1.

Solve for x. 3x – 2y = 6

Can anyone help me with these 3 problems please?

2007-09-21 16:05:07 · 7 answers · asked by Anonymous

4 plus 4 times 2

2007-09-21 16:00:52 · 10 answers · asked by Anonymous

2007-09-21 16:00:46 · 3 answers · asked by ngoc v 1

2007-09-21 15:58:51 · 2 answers · asked by tuga862002 1

My nephew was doing powers for his homework and he got 10 to the power of 15. So we were wondering how high does the dollar value go. We think there are one or two above trillion. Thanks for your help.

2007-09-21 15:57:35 · 4 answers · asked by LARRY N 1

a friend asked me this

2007-09-21 15:54:43 · 3 answers · asked by Book of Changes 3

Is answer 20?

2007-09-21 15:51:30 · 12 answers · asked by Anonymous

i know this is supposed to be a really easy question but i can't get to the right answer!! i know you're supposed to find a/b by elimination then sub but i keep getting the wrong answer...

heres the question:
Given the vectors u = [2,1] and v= [-1,3]:
a) Express the vector w = [12, -1] as a linear combination of vector u and v.

ANSWER: 5u - 2v

can someone explain / show work of how to do this please!!!

PS. all the letters have the little vector sign on them, just dunno how to do it on the computer lol.

2007-09-21 15:34:34 · 2 answers · asked by mystery_girl07 2

2007-09-21 15:30:59 · 3 answers · asked by ! 2

They are fractions and please help. Thanks for the last answer.

2007-09-21 15:23:50 · 5 answers · asked by Anonymous

A) -a-7
B) -a-3
C) a-4
D) a-7

Can someone help me please? I don't get it

2007-09-21 15:16:20 · 9 answers · asked by Anonymous

its 3 to the negaive 4th power


THANKS

2007-09-21 14:59:51 · 10 answers · asked by crackr 3

THANK YOU

2007-09-21 14:57:42 · 4 answers · asked by crackr 3

find the integral of x^3 * e^(2x) dx.

2007-09-21 14:49:25 · 3 answers · asked by ! 2

please tell me.....

2007-09-21 14:45:52 · 1 answers · asked by TaylorMade85 2

Please, could someone please explain them. I understand that if you need to find f(g(x)) then you should replace g(x) with f(x), but I dont understand how to do that!
Let's say its this:

Find f(g(x))
f(x)=5x+4 g(x) = 4-x

Can someone explain how to do this, and when you replace g(x) with f(x), why do you get rid of the x in the f(x)?

2007-09-21 14:38:04 · 7 answers · asked by taekwondobabe30 2