Mathematics - 18 July 2007

how do you prove that (1/cscx-cotx)-(1/cscx+cotx) is equal to (2cotx)

2007-07-18 11:59:04 · 4 answers · asked by Juicy Baby 2

solve each of the following systems by using either addition or substitution. If a unique solution does not exist, state whether the systems is dependent or inconsistent.

10x 2y = 7
y = - 5x + 3

2007-07-18 11:56:26 · 3 answers · asked by Anonymous

:) Not quite sure what I am looking for here, but if I like it you get the points.

2007-07-18 11:55:53 · 3 answers · asked by chancebeaube 3

solve each of the following systems by substitution.

8x - 4y = 16
y = 2x - 4

2007-07-18 11:53:56 · 3 answers · asked by Anonymous

can anybody show me how to do these types of equations.
i know there easy to everybody except for me.lol.so please bare with me.

2x-20=32

i know you have to do something to get x alone right?

x
__
3 - 4=10

2x
__
5 +1=7

i really want to see step by step i need to learn so when i take this test online i want to be able to recieve my credits

=)

2007-07-18 11:53:49 · 4 answers · asked by Anonymous

I have four loans on my home (see numbers and terms below.) I am trying to determine the TRUE APR of the 4 total. I am considering a refinance and need to know if I am saving or losing money by doing so. Please help!
TOTAL OWED
(1) $15,000 APR 7.90%
(2) $15,000 APR 24.24%
(3) $85,202 Int Rate 5.75%
(4)$121,441 Int Rate 9.49%

2007-07-18 11:46:43 · 3 answers · asked by Anonymous

2007-07-18 11:40:21 · 2 answers · asked by Anonymous

solve for x:

2e^(2x) -e^(-x) = 0

show how you used the natural log to solve it.

2007-07-18 11:39:48 · 12 answers · asked by Zywiec 2

2007-07-18 11:30:27 · 5 answers · asked by cindy v 1

hwo to do things like 6a - 18b please help!!!

2007-07-18 11:24:20 · 7 answers · asked by Anonymous

what is liquid and solid at the same time?
first correct answer gets best answer.
have fun lol ;)

2007-07-18 11:21:59 · 24 answers · asked by Promise 3

2007-07-18 11:16:17 · 6 answers · asked by Anonymous

I am approximetly 140 CM, I would like to know what I am in feet, so I can figure out how much I should weight...this is not homework, but I thought it would be the best place to post this.

Thank You Very Much

2007-07-18 10:49:23 · 9 answers · asked by Anonymous

I'm supposed to derive this: y = e^(-8x) cos(3x)

I got -3sin(exp(x))exp(-8x) -8cos(3x)exp(-8x)

but its not right..any help would be appreciated.

2007-07-18 10:46:42 · 2 answers · asked by Anonymous

Graph the following equation; calculate the slope, x-intercept, and y-intercept, and label the intercepts on the graph.
y = x + 3

2007-07-18 10:38:35 · 5 answers · asked by Anonymous

Please add the following polynomial fractions.

(a - 1/a + 1)+(a + 1/ a - 1)=

does it equal a^4??

2007-07-18 10:33:17 · 9 answers · asked by soccermom71968 1

I have a question that looks like this:
Which of the following is the interval of convergence of the power series:

the summation from n=0 to infinity of:(x-2)^n / 2^n

There are 5 different answers:
a) 2 <= x <2
b) -2 < x <= 2
c) 0 < x < 4
d) 0 <=x < 4
e) -2 <= x <= 2

Are there any tricks to solving these types of calculus problems? Do you know the answer to this one, and if so, how did you do it? I read about this absolute value ratio method, but cannot figure it out. Thanks for your help!

2007-07-18 10:31:48 · 3 answers · asked by Chrystal T 1

What's the % you give him of winning?

2007-07-18 10:27:55 · 4 answers · asked by colonelfan88 2

I need to convert

a variety of fractions with exponents, exponents that are fractions, fractions that are a part of fractions, and radicals that are fractions

into radical form and negative exponents.


for example
I already converted 1/2^4 to 2^-4 in negative exponent form.

i hope this makes sense


PLEASE HELP ME ASAP IF YOU CAN

THANK YOU!

2007-07-18 10:26:42 · 3 answers · asked by ♡ 2

here it is:
http://www.crunchyroll.com/user/babiixjen_x3/photos/1211931

2007-07-18 10:13:49 · 3 answers · asked by blahhhhhh 2

how do you solve this?

2007-07-18 10:09:06 · 6 answers · asked by Anonymous

Like how did they find out that to times something in a column the second time you times you have to put a sero and then add the 2 answers together or how did they find out that pie is 3.14 or how did they find out how to make fractions into decimals and percentages vica versa..

2007-07-18 09:42:18 · 11 answers · asked by Lizzie T 1

please don't say somethin stupid like 10zilliongzillionmzillionpzillion

2007-07-18 09:39:20 · 8 answers · asked by Lizzie T 1

How many different 3 inch by 3 inch squares can be cut from a rectangular piece of paper measuring 7 feet 4 inches long by 3 feet wide?

2007-07-18 09:34:21 · 13 answers · asked by freddiew 3

A full cord equals 4x4x8 (128 cuft) with 16 inch long pieces.
an 1/8th of a cord is 4x3x1.3(16 inches converted to ft) or(16.00 cuft).
How many actual pieces of firewood are in a FULL CORD and an 1/8 of a cord.

PLEASE LET ME KNOW

2007-07-18 09:30:06 · 2 answers · asked by Scott S 1

A triangle:
Square:
Other shapes:
Or is it all just the same formula??
If so, what is it??

2007-07-18 09:26:06 · 10 answers · asked by Anonymous

(x-3/2)^3 * (1/x-3)^2

2007-07-18 09:23:51 · 1 answers · asked by gloriousnina 2

Need some major help anybody

2007-07-18 09:18:53 · 14 answers · asked by Anonymous

sin^2 x(x is not to the power as 2 is), anyways again "solve Sin^2 x.cos x=cos x for all values of x if x is measured in degrees"

2007-07-18 09:09:14 · 3 answers · asked by SeoulFlow 2

A certain long-distance carrier provides service between Podunk and Nowheresville. If x represents the number of minutes for the call, where x>0, then the function f defined by

f(x)=.40[[x]]+.75

gives the total cost of the call in dollars. Find the cost for a 5.5 min call.

2007-07-18 09:04:44 · 4 answers · asked by lildrehawk 1