Mathematics - 10 December 2007

i need help with using sine in SOH CAH TOA. the opposite angle is 5 in this case, and i need to find hyp. the angle is 36, so do i do:
Sin 36= 5 / Hyp?
For sine 36 i got 0.5877853, but then what do i need to multiply it with to find the Hyp? do i multiply it by 5? im so confused please help!!

2007-12-10 04:37:35 · 4 answers · asked by asdf 1

simplify:

a^2b + 2ab^2/ab - 2ab - b^2/b

2007-12-10 04:35:59 · 10 answers · asked by Anonymous

2007-12-10 04:35:15 · 4 answers · asked by baloo 2

Transform the equation x^2 + y^2 - 6x + 9y = 1 into standard form by completeing the square.?
also can someone state center radius

2007-12-10 04:23:16 · 1 answers · asked by referencearea 2

factor completely:
1. 22y^4 - 33y^3 -11y^2


2. 77r^7s^7 -84r^8s^4

2007-12-10 04:17:46 · 5 answers · asked by Anonymous

I think I might have gotten these wrong. It's burning at the back of my mind on what the answers to these questions are. Can you please explain how to arrive at the solution?

1) The base of a triangle is slipping at a rate of 2cm/sec and the top is slipping at a rate of 3cm/sec. What is the rate when the base is 20cm and the height is 50cm? Is the area decreasing or increasing?


2) The volume of a topless can is 27pi. Find the radius and height. How do you know that these are the minimum dimensions?

2007-12-10 04:17:28 · 2 answers · asked by Anonymous

2007-12-10 04:11:13 · 3 answers · asked by Alexander 6

Provide a counterexample for each statement.
1. (n + 2)^3 = n^3 + 2^3

2. x^2 > x for all values of x

2007-12-10 04:08:59 · 4 answers · asked by Anonymous

There are four volumes of Twain's collected works on a shelf. The pgs of each volume are exactly 2 inches thick. The covers are each 1/16 inches thick. The bookworm started eating on pg 1 of volume 1 & ate through to the last pg on volume 4. What is the distance the bookworm covered?

2007-12-10 04:08:09 · 4 answers · asked by NICOLE 2

x+2y=7 and 2x+4y=21
1.perpendicular
2.parallel
3.neither

2007-12-10 04:07:51 · 2 answers · asked by ivan m 2

2007-12-10 04:05:53 · 5 answers · asked by Anonymous

∫[log(cosx)/cos²x].dx = ?

∫[(4x²-3x+2)/(4x²-4x+3)].dx = ?

2007-12-10 04:04:01 · 3 answers · asked by Geberit 1

Consider a Linear feed back shif register with 'm' registers and maximum period '2^m-1'.Prove that for any non-zero initial state the output sequence contains exactly 2^(m-1) ones and 2^(m-1)-1 zeros in its output of 2^m-1 bits

2007-12-10 03:58:09 · 1 answers · asked by mehmoodabbas 1

2007-12-10 03:56:45 · 6 answers · asked by Anonymous

1-) (x+3) (x-2)<0

2-)8^2/3=

2007-12-10 03:53:59 · 6 answers · asked by The Apostle 2

half past seven on a Tuesday??

2007-12-10 03:52:53 · 2 answers · asked by clavdivs 4

find a number between any two rationals a/b and c/d,
where, a, b, c, and d are integers where b, and d do NOT equal 0

2007-12-10 03:49:15 · 2 answers · asked by Madison 2

x^6/x-^2

2007-12-10 03:40:29 · 3 answers · asked by thonia 1

Considering that anything divided by itself is one, but you can't divide by zero, what is 0/0?

2007-12-10 03:37:48 · 13 answers · asked by R.S.A.B.C.R.D.A 2

2007-12-10 03:33:57 · 4 answers · asked by mx_pi 2

A hill slopes at angle of 15 degree with teh horizantal. from the base of the hill, the angle of elevation of a 600 ft tower at the top of the hill is 40 degree. how much rope would be required to be reached from teh top of tower to the bottom of the hill? round answers to the nearest foot

2007-12-10 03:33:08 · 1 answers · asked by Ali A 1

The link is below so you can view clearly with the problem.
Please show work and explain how you approached solving this problem so i can learn.
http://docs.google.com/Doc?id=dg4zw6jf_0fkcjznhs

2007-12-10 03:29:11 · 3 answers · asked by BBT 1

2007-12-10 03:27:39 · 11 answers · asked by cak 1

If you were to use the substitution method to solve the following system,
x = y + 4,
2x - 5y = 2
the next step would be:

to multiply the top equation by - 2
to add the top equation to the bottom
to solve the top equation for y
2(y + 4) - 5y = 2

2007-12-10 03:23:43 · 2 answers · asked by Anonymous

What are these systems of equations?

1. 3x - 2y =10
5x + 3y =4
(2, -2)
(-2, 2)
(2, -5)
(-2, 5)

2. x + y = 4
y = 2x + 1
(3, 1)
(1, 3)
(2, 2)
(-2, 2)

2007-12-10 03:12:21 · 2 answers · asked by Anonymous

A convex polygon can be defined as a polygon with all its interior angles less than 180 degrees. Also, all diagonals lie entirely inside a convex polygon. If a convex polygon has 324 diagonals, how many sides does this polygon have?

2007-12-10 03:10:01 · 3 answers · asked by Anonymous

Find the percent of increase or decrease. Round to the nearest percent.
1. Original: 10
New: 12

2. Original: 50
New: 56

3. Original: 30
New: 12

2007-12-10 03:08:32 · 3 answers · asked by Anonymous

i am finding it hard to prove statements using contradiction, direct argument and counter examples. is there a way i can learn them easily without doing my head in (Alevel maths by the way)

2007-12-10 03:03:59 · 4 answers · asked by ps man 1

What is the slope of this line? 7x+y=6

2007-12-10 02:59:07 · 7 answers · asked by ivan m 2

3(x-2)=5(x+1) Can you please send this one a.s.a.p? thanks for your help!!!

2007-12-10 02:57:41 · 6 answers · asked by bug 2