Mathematics - 27 December 2007

Need help for placement test tomorrow ^.^

2007-12-27 08:44:12 · 7 answers · asked by Anonymous

An airplane travels west for 3 hours at 340 mph. Then it changes course to S34 degrees W. Find the airplane's distance from its point of departure after a total flight time of 6 hours.

if you can i appreciate it if you show it step by step thank you soo much!!

2007-12-27 08:42:08 · 6 answers · asked by Christina S 1

2007-12-27 08:38:03 · 9 answers · asked by Alexander 6

2007-12-27 08:35:16 · 9 answers · asked by Anonymous

Find all points of inflection for f(x)=x^4-6x^3...

also give a sign of the second derivative of f at the indicated poin/points in the problem (positive, negative, zero)

2007-12-27 08:29:32 · 2 answers · asked by ashlea o 2

This is a problem I cant seem to understand....

Find, to the nearest degreee, all values of θ (theta) in the interval:

0 < (or equal)θ<(or equal)180 that satisfy the equation

8 cos^2 θ-2cosθ-1=0

How would I go about doing this? Help is appreciated...

2007-12-27 08:21:45 · 6 answers · asked by Anonymous

My mom keep telling me that my homework problem is wrong when I know for a fact its right.

What is 35% of 640??
I put 864.

amount=percent times base
1.35%(640)=864

What am I doing wrong???

2007-12-27 08:07:46 · 12 answers · asked by MMM Ice Cream 1

This is a minimum/ maximum question, any help you can give me i will be grateful. Please show me the work behind your answer.


Sum of two positive numbers is 8. Find the minimum value of the sum of the square of one and the cube of the other.

2007-12-27 07:55:34 · 10 answers · asked by Whats the Scoop? 2

I mean, of course it will look good on our resume, but when will we ever have to use it in our lives?

2007-12-27 07:55:28 · 16 answers · asked by ♥♥PinkFuzzySocks34♥♥ 3

How for example would you simplify this question?

(a+b)/ (1/c)

The answer is c(a+b) but I was wondering how this is worked out.

Thanks for the help,

10 points to the first reply that answers it best!

2007-12-27 07:51:41 · 10 answers · asked by Simon F 2

2007-12-27 07:47:48 · 4 answers · asked by Alexander 6

Another sample problem for an exam I'm going to take:

Use the Cauchy-Riemann equations to show that an analytic function satisfying |f(z)| = 1 for all z must be a constant. You may assume that the domain is connected.

I know this must be true by Liouville's Theorem, but I can't imagine how to show it as a consequence of the C-R equations.

Thanks!

2007-12-27 07:47:27 · 3 answers · asked by jtabbsvt 5

is infinitely large

2007-12-27 07:41:33 · 5 answers · asked by Alexander 6

Ray Cupple bought a basic car costing $10,150.00, with options costing $738.00. There is a 6% sales tax in his state and a combined $50.00 license and registration fee. What was Ray's total cost?

2007-12-27 07:30:39 · 14 answers · asked by Anonymous

2007-12-27 07:29:54 · 3 answers · asked by Anonymous

Show that inner area of the tube is no less than outer area of 5 balls.

2007-12-27 07:27:40 · 5 answers · asked by Alexander 6

2007-12-27 07:18:54 · 6 answers · asked by Alexander 6

can some guide me into this problem, I totally don't understand.
i did the calculations and keep getting D.$4.50. would that be the correct answer?

Kara and Sonny went to see a movie at the local theater.

Kara paid $13.00 for 1 large box of popcorn and 2 large soft drinks.

Sonny paid $8.50 for 1 large box of popcorn and 1 large soft drink.

In the system of equations below, p represents the cost of 1 large box of popcorn and s represents the cost of 1 large soft drink.

p + 2s = 13.00
p + s = 8.50

What is the value of p, the cost of 1 large box of popcorn?

A. $4.00
B. $4.25
C. $4.30
D. $4.50

2007-12-27 07:15:40 · 10 answers · asked by Anonymous

2007-12-27 07:14:05 · 4 answers · asked by Alexander 6

2007-12-27 06:56:29 · 30 answers · asked by Alexander 6

Given : WXYZ is a trapezoid, Q is midpoint of WX
Prove: triangle YQZ is isosceles
....Y-------Z

X-----Q-----W

2007-12-27 06:48:54 · 2 answers · asked by Garrett L 1

2007-12-27 06:48:49 · 3 answers · asked by Alexander 6

Can someone show me how they got their answer? I never had any algebra, and my daughter needs me to help her. HELP

2007-12-27 06:29:52 · 10 answers · asked by mseger68 1

2007-12-27 06:25:59 · 8 answers · asked by Alexander 6

I bought something that totaled $30.88....

With 5% tax what would the regular price have been?


?

2007-12-27 06:15:35 · 12 answers · asked by lsarge442 1

Avegail needs to determine the distance at certain points across a lake. Her crew and she are able to measure the distances of the triangular lake. Find how wide the lake is to the nearest tenth of a meter.





hypotenuse = 130 meters
length = 60 meters

a. 70 m
b. 8.4 m
c. 143.2 m
d. 115.3 m

2007-12-27 06:09:22 · 7 answers · asked by . 1

1. Questions 1 to 4: Divide. Make sure your answers are in simplest form.

2/3 divided by 5/9

option1. 1 4/5
option2. 1 1/5
option3. 1 3/15
option4. 1 3/5

2. c/2d divided by d/8c

option1. 4c2/d^2
option2. 4c^2/3d
option3: 2c/d^2
option4: 2c^2/d^2

3. 2x-y/2y-x divided by 4x^2-y^2/4y^2-x^2

option1: 2y-x/2x+y
option2: 2y+x/2x+y
option3:2y+x/2x-y
option4:2y-x/2x-y

2007-12-27 05:45:48 · 5 answers · asked by Jackie 2

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/Picture9.png

2007-12-27 05:45:35 · 3 answers · asked by Anonymous

2007-12-27 05:42:00 · 3 answers · asked by yatboricua 1

Use Descartes' Rule of Signs to analyze the zeros of the following. List all possibilities.

P(x) = x^5 - 4x^4 + 3x^3 + 2x - 6

P(x) = -5x^4 + x^3 + 2x^2 - 1

P(x) = 2x^5 + 7x^3 + 6x^2 - 2

Could someone explain how I would do this? Maybe show an example? Thank You! :)

2007-12-27 05:40:04 · 5 answers · asked by Anonymous