Mathematics - 28 August 2007

How did this:

(cosθ sinθ + (1 + sinθ) cosθ) / (cosθ cosθ - (1 + sinθ) sinθ)

become this:

(cosθ(1 + 2sinθ)) / (1 - 2sin^2θ - sinθ) ??

2007-08-28 15:56:17 · 4 answers · asked by Jorm 3

ok.....heres the qeustion....
write an expression for each phrase
28. the quetient of 3b and 4.5
30. 7 minus the product of v and 3
32. the sum of the quetient of p and 14 and the quetient of q and 3

2007-08-28 15:56:05 · 6 answers · asked by sparky_14_07 2

7 10
_____ + _____
6x^2r 3xr^2

2007-08-28 15:44:44 · 1 answers · asked by Daisy=] 1

Please help me with these questions and please explain your answer

1. If g(x)=x^2 + 3x - 5 what is g(-2)?

2. Which of the following is a linear function? For those that are not identify the type of function they are.

A. g(x)= 2x^2- x+ 1
B. h(x)= Ix+1I
C. f(x)= 2x-5
D. g(x)= (-x^3) - 1
E. h(x)= squareroot of x-4

2007-08-28 15:41:48 · 5 answers · asked by Anonymous

I left my calculator at work.

2007-08-28 15:41:01 · 4 answers · asked by ska1248 1

A jar contains 35 coins consisting of dimes and quarters and having a total value of $4.40. How many of each kind of coin are there?

**i got 29 dimes and 6 quarters but i don't know how to show my work for it. how would i show my work to prove my answer if it is correct?

2007-08-28 15:38:08 · 6 answers · asked by j;lkj;lkj;lkj;lkj 2

2007-08-28 15:37:32 · 2 answers · asked by Boo Radley 4

2X^2 + 9X-35

8X^2 + 2X- 15

show work please

^2= squared, just incase.

2007-08-28 15:27:14 · 6 answers · asked by Anonymous

I've done this before, but I need a little refresher. Tonight.

I remember something about root vs. exponent, but not how it works.

Basically, I have (8x^3)^2/3

I hope that's clear.

2007-08-28 15:24:57 · 4 answers · asked by Chelsi 1

2007-08-28 15:13:03 · 4 answers · asked by booflouise 2

please give a detailed repsonse. thank you.

2007-08-28 15:12:28 · 9 answers · asked by Anonymous

Thank you :)

2007-08-28 15:10:44 · 4 answers · asked by Anonymous

2007-08-28 14:41:18 · 8 answers · asked by lala haha gaga mama 2

2007-08-28 14:35:51 · 5 answers · asked by kels4607 2

I think the answer is 13 but I don't know how to complete the equation.

The question is:
2 years ago jamie was half as old as she will be 9 years from now. How old is she now?

Please help

2007-08-28 14:25:08 · 9 answers · asked by Help please 1

2 years ago Jamie was half as old as she will be 9 years from now. How old is Jamie now?

How can I work this out. I think the answer is 13.

2007-08-28 14:20:40 · 2 answers · asked by Help please 1

Question
The sum of any 4 consecutive numbers is even. explain how this is true.

2007-08-28 13:56:05 · 16 answers · asked by motoman54 1

step by step, please.

i came up with an answer ln(7+y^2)/2, but it's wrong.
help would be greatly appreciated!

2007-08-28 13:49:32 · 2 answers · asked by Awesometown13 1

2007-08-28 13:46:37 · 3 answers · asked by KT 1

2007-08-28 13:41:29 · 10 answers · asked by marym 1

2007-08-28 13:37:48 · 7 answers · asked by Anonymous

2007-08-28 13:34:22 · 6 answers · asked by Fibonacci01123 3

Memory on electronic storage devices is measured in bytes, or in larger units such as kilobytes (kB), megabytes (MB), or gigabytes (GB). Suppose a floppy disk has a memory capacity of 1440 kB.

a - If a CD (compact disc) has a memory capacity of 600 MB, then compared to the floppy, how many times as much memory capacity does the CD have?

b - If a DVD (digital video disc or digital versatile disc) has a memory capacity of 4.7 GB, then compared to the CD, how many times as much memory capacity does the DVD have?

i would really appreciate the help...thanks so much!!!

2007-08-28 13:33:52 · 4 answers · asked by Anonymous

does 1+cos^2X simplify into anything?

2007-08-28 13:30:04 · 1 answers · asked by Fibonacci01123 3

Given that the diagonal is of length 13 cm, and that the width is x cm, derive the equation of x^2-17x+60=0. Hence find the dimensions of the rectangle.

2007-08-28 13:29:19 · 6 answers · asked by nidya 1

2007-08-28 13:27:47 · 3 answers · asked by Anonymous

a line passes through a( 3,7), b (-4,9). find the value of a if c(a,1) is on the line.

also please help me on this one:
the product of the slopes of two nonvertical perpendicular lines is always -1. Is it possible for two perpendicular lines to both have positive slope? explain.

thank you!will pick best answer.

2007-08-28 13:24:29 · 3 answers · asked by Ballerina 5

Can anyone help me with this problem?
-3(2x+1)=2(x-2)

2007-08-28 13:23:03 · 12 answers · asked by 2cute 1

6n=2/3(5n-2)

i think this is hard and i dont know what to do please help!!

2007-08-28 13:22:45 · 2 answers · asked by DaYrØn™ 2

Ray BX bisects angle ABC. Solve for x and find angle ABC.

Angle ABX= 5x, Angle XBC = 3x+10

2007-08-28 13:17:39 · 1 answers · asked by iluvcaliii06 2