Mathematics - 25 July 2007

A blimp, suspended in the air at a height of 500 feet, lies directly over the line from Soldier Field to the Adler Planetarium on Lake Michigan. If the angle of depression from the blimp to the stadium is 32 degrees and from the blimp to the planetarium is 23 degrees, find the distance BETWEEN Soldier Field and the Adler Planetarium.

2007-07-25 23:40:03 · 2 answers · asked by journey 1

A guy wire 80 feet long it attached to the top of a radio tower, making an angle of 25 degrees with the ground. How high is the tower?

2007-07-25 23:23:34 · 3 answers · asked by journey 1

2007-07-25 23:08:30 · 13 answers · asked by Me 5

http://www.math.com/homeworkhelp/Algebra.html

^^Is that what you learn?

Also what do you learn in algebra 2? Anyone have a link to that?

2007-07-25 23:06:30 · 0 answers · asked by fred 3

Joe will roll a pair of dice until he rolls a 7 (sum of 2 numbers). Let X be number of times he will roll without getting a 7.
(For example, if on the third roll Joe first rolls 7, then X=2.)
What is the expected value of X?

[hints:
let p(x) denote probability that X=x.
The expected value will be an infinite series, (0)p(0) + (1)p(1) + (2)p(2) + ... .
After the formula for p(n) is determined, compute the series (remember 1 + x + x^2 + x^3 + ... = 1/(1-x), if |x|<1)
Take the derivative of both sides.
]

2007-07-25 22:20:02 · 3 answers · asked by Anonymous

2007-07-25 21:42:28 · 6 answers · asked by Valand M 1

sinh(x-3)=4

2007-07-25 21:39:05 · 5 answers · asked by babam11218716 1

What is exhaustive events?

2007-07-25 21:18:51 · 4 answers · asked by Nora 1

Can anyone help factor this polynomial completely?

x^2 + xy +3x - 2y^2 + 2y +2.

The closest I've got is:

(x + 2y + 1)(x - y +2) which gives me x^2 +xy + 3x - 2y^2 + 3y + 2.

The only difference in my answer is that the second last term should be 2y not 3y.

If anyone could help that would be wonderful!!!

2007-07-25 21:14:55 · 4 answers · asked by Anonymous

sin(3x)=-4sin^3(x)+3sin(x)

2007-07-25 21:10:51 · 5 answers · asked by babam11218716 1

This year in algebra 1 we learned about quadratic and linear equations and polynomials.

What do you learn in algebra 2?

2007-07-25 21:06:44 · 3 answers · asked by fred 3

2007-07-25 20:22:24 · 1 answers · asked by fazzybadger 1

6x^3+11x^2-4x-4/3x-2

is there any online caculators to give me accurate results with these kind of math polynomials.i've been up since 6:30am trying to get these division polynomials and i am so tired im dedicated because i really want to graduate this year.
*so if you know of any please help me.*

2007-07-25 19:40:20 · 2 answers · asked by Anonymous

help please

2007-07-25 19:24:09 · 7 answers · asked by Anonymous

2007-07-25 19:23:13 · 5 answers · asked by Anonymous

help please

2007-07-25 19:20:14 · 8 answers · asked by Anonymous

2007-07-25 19:19:55 · 4 answers · asked by Anonymous

one meter. If the tank is turned so that it rests on one of its smallest faces, the depth, in meters, of the water will be:

A: 2/3
B: 1
C: 4/3
D: 5/3
E: 2

2007-07-25 19:18:53 · 4 answers · asked by Anonymous

2007-07-25 19:18:43 · 4 answers · asked by alma g 1

(x^3+y^3)/(x-y)

i use a calculator but my answer come out wrong why?help me with these problmes please

2007-07-25 19:17:11 · 1 answers · asked by Anonymous

Maximize the function f(x,y) = 3x-y+1 on the ellipse x^2 + 3y^2 = 16 .

Please explain what you are doing so that I can learn this stuff. Thanks.

2007-07-25 19:15:24 · 2 answers · asked by Anonymous

help please

2007-07-25 19:13:21 · 5 answers · asked by Anonymous

The question is take the derivative of this:

f(x) = (x^2 + 2x +3)e^-x


I got f'(x) = (2x+2)(e^-x) + (x^2 + 2x +3)(e^-x)'

I know that the derivative of e^x is e^x but what about e^-x?

I thought that it was maybe (-1)(e^-x)

So when I simplified, I got

(-1)(x^2 + 1)(e^-x) but, this was wrong, and I can't figure out why....

2007-07-25 19:10:43 · 4 answers · asked by ahelaumakani 4

2007-07-25 19:07:58 · 10 answers · asked by Anonymous

x + y + z = 9
w + y + z= 5
w + x = 2

what is the average of w, x , y, and z?

(a) 0
(b) 1
(c) 2
(d) 3
(e) 4

2007-07-25 18:56:41 · 5 answers · asked by Anonymous

2007-07-25 18:51:40 · 9 answers · asked by jonathan b 1

Here is your options:
A. y= 2x-4
B. y= -2x+3
C. y= 3x-2
D. y= -4x+2

2007-07-25 18:48:55 · 6 answers · asked by grimstar8402 2

can you please explain how?

2007-07-25 18:34:48 · 5 answers · asked by weee 1

im struggling with this math.
The perimeter of a triangle is 7a-11b.If two of its sides are 2a+b and a-9b,what is the third side
*hint*_ _ _ _ b

2007-07-25 18:17:49 · 2 answers · asked by Anonymous

1-e^(2x)=3 and ln(2x+1)^2=12


details for both problems please

2007-07-25 18:17:43 · 3 answers · asked by gary l 1