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Mathematics - 25 November 2007

[Selected]: All categories Science & Mathematics Mathematics

Find all solutions of the equation in the (o, 2pie) interval

2sin^2x=2 = cos x

I really need help with this one....I'm lost. (the ^2 means squared)

2007-11-25 13:49:42 · 2 answers · asked by Anonymous

The amount of water in a tank t minutes after it has started to drain is given by
W=100(t-15)^2 gal. a) At what rate is the water running out at the end of 5 minutes? B) What is the average rate at which the water flows out during the first 5 minutes?

2007-11-25 13:46:35 · 4 answers · asked by Anonymous

Solve:

x^2 - 6x + 9 = 100

2007-11-25 13:45:11 · 4 answers · asked by Aimee R 1

2

I'm taking Algebra 2 w/Trig. We got a copy of the unit circle, and we have to memorize it. I've been sick over Thanksgiving break, and have not finished learning it. Any tips to help me remember it. Thanks!

2007-11-25 13:27:11 · 4 answers · asked by filmnoirgirl16 3

there is so many conversions in money what is one pound in the uk converted to american money and any others you can think of

2007-11-25 13:26:40 · 3 answers · asked by . 3

I am completely lost, can someone please help me understand how to find the reciprocal. Use this for example:

(1/3)(9-4)
Keep in mind that it is one third (one over three) times (9-4), I am completely lost, thanks

2007-11-25 13:19:36 · 2 answers · asked by feastofmagic03 2

HELP! THIS HW IS SO HARD :(

2007-11-25 13:08:11 · 2 answers · asked by wowz 2

Heres the problem:

Triangle EFG is isosceles, and
measure of angle E = x + 25 ,
measure of angle F = 2x + 30 ,
measure of angle G = 2x

Which of the following is true?
A. EF = EG
B. EF = EG = FG
C. FG = EG
D. EF = FG
E. None of the Above

2007-11-25 12:28:17 · 5 answers · asked by Bottle 3

2007-11-25 12:10:52 · 2 answers · asked by Kay 2

find 3 consecutive integer twice the greatest integer is 2 less than 3 times.

2007-11-25 11:48:29 · 21 answers · asked by Mathⁿ 4

I have to match graphs with fuctions such as f(x)=x^2-1.
I was wondering if there was a site that would give me different functions and what their corresponding behaviors look like.

2007-11-25 11:45:49 · 1 answers · asked by Anonymous

evaluate the expression

1. arcsin(sin(tan(arccos 5/13)))

2. cos(arctan 17/12)

word problem:
When an airplane leaves the runway, its angle of climb is 18 degrees and its speed is 275 feet per second. Find the plane's altitude after 1 minute.

2007-11-25 11:44:56 · 1 answers · asked by Anonymous

(148/145 +51/145 i)

2007-11-25 11:17:32 · 2 answers · asked by evosteo 2

My daughter works for $5.85 an hour, she had to work two shifts where she was told were time and a half. She wanted to know how much that was an hour. Thanks

2007-11-25 11:09:36 · 7 answers · asked by Anonymous

(9 - 7t)(7 - 6t + 8t {SQUARED})

2007-11-25 11:05:20 · 6 answers · asked by Micheala Cox 2

i dont understand how
2SO2 + O2 ---> 2SO3
Wouldnt it be 4 if you were to add the o's?

or this

PCl + Cl2 = PCl5

how does this work??

2007-11-25 11:02:52 · 3 answers · asked by gypsy 3

2007-11-25 10:47:27 · 13 answers · asked by Anonymous

2007-11-25 10:45:06 · 8 answers · asked by lori c 2

If I have the question:

4x1 + 3x2 = 18
3x1 - x2 = 7

How would I solve it using matrices?

Note: the 1 and 2 aren't 'to the power', its to differentiate between two different variables.

2007-11-25 10:29:05 · 4 answers · asked by Al 2

What are a some good ideas to write an essay about this topic "Explain proportions as the Basis for the Straight Line and other Graphs"?

2007-11-25 10:26:22 · 1 answers · asked by you 1

2007-11-25 10:18:42 · 6 answers · asked by Anonymous

(4y/y+2)+(-y/y+2)

2007-11-25 10:15:46 · 1 answers · asked by michael s 1

Solve for x: 5x(squared) - 10 = x (squared) + 90

2007-11-25 10:13:40 · 4 answers · asked by yo 1

9/k+8/k

2007-11-25 10:13:04 · 3 answers · asked by michael s 1

2007-11-25 10:06:45 · 4 answers · asked by Anonymous

2007-11-25 09:47:06 · 2 answers · asked by Hmmm 1

Such as f(x)= -2x+5

2007-11-25 09:42:39 · 12 answers · asked by Rachel L 2

A poster is to contain 102 square cm of printed matter, with margins of 5.5 cm each top and bottom and 2.5 on each of the sides. Find the minimal cost of the poster if it is to be made of material costing 12 cents per square cm.

2007-11-25 09:41:37 · 1 answers · asked by bball10010 1

0

Find the rectangle of largest area that can be inscribed in a semicircle of diameter 73, assuming that one side of the rectangle lies on the diameter of the semicircle

What is the largest possible area?

2007-11-25 09:38:13 · 1 answers · asked by bball10010 1

Verify equation is an identity.

cos(pie/2 + x) = -sinx

Find the local extrema of f

x^2/3(x-7)^2 + 2

2007-11-25 09:36:03 · 1 answers · asked by Doc. Ock 3

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