Mathematics - 15 September 2007

2007-09-15 17:07:00 · 7 answers · asked by baby166_99 2

2007-09-15 17:03:22 · 8 answers · asked by Akilesh - Internet Undertaker 7

2007-09-15 16:40:15 · 2 answers · asked by Nique 1

Yes, this is for you Calculus lovers.

2007-09-15 16:21:59 · 7 answers · asked by Perverted Justice 1

2007-09-15 16:10:40 · 7 answers · asked by Akilesh - Internet Undertaker 7

A woman drove part of a 185 mi trip at 50 mi/h and the rest at 55 mi/h. Find the distance she traveled at 50 mi/h if her total driving time was 3 hours and 30 minutes.

Explain all the steps and everything as clear as possible. I tried doing the problem and I can't get it right....

Here are the 4 possible answers...

A) 110 mi
B) 100 mi
C) 75 mi
D) 150 mi

2007-09-15 16:09:26 · 5 answers · asked by Anonymous

I know its wrong to ask Yahoo Answer to help u do ur homework... but i am completely puzzled so can somebody plzz help me factor this


2x^3+5x^2-8x-20


many thanks to anyone that decides to help me :-) :-)

2007-09-15 16:07:49 · 4 answers · asked by ♥ ©o©oA ♥ 4

2007-09-15 16:00:40 · 6 answers · asked by Anonymous

2007-09-15 15:56:52 · 5 answers · asked by texan3715 1

question 2.
vector a has a magnitude 10 and makes an angle of 75 degrees with x-axis. Calculate X and Y components of vector a.

2007-09-15 15:51:30 · 4 answers · asked by scorrea54 1

2007-09-15 15:51:09 · 11 answers · asked by Help Me With Homework :) 1

Is the absolute value of
I pi^2 - 10 I
the same thing minus the abs. value signs?
Just imagine the pi^2 to be the pi symbol squared.

2007-09-15 15:48:33 · 10 answers · asked by Joy 2

probability no one makes an A is?

a. 0.15
b. 0.65
c. 0.85
d. 0

2007-09-15 15:47:14 · 3 answers · asked by Anonymous

There are 5 distinct pair of white socks and 5 pairs of black socks in a cupboard. In the dark, how many socks do I have to pull out to ensure that I have atleast 1 correct pair of white socks.

2007-09-15 15:47:05 · 10 answers · asked by Harry 1

and 8 copies of a draw program. Three of the word processing , four of the spread sheet, and two of the draw programs are infected with a computer virus. If a program is selected at random, the probability it is infected with a virus?

a. 11/30
b.7/30
c. 3/10
d. 1/4

2007-09-15 15:42:50 · 5 answers · asked by Anonymous

2007-09-15 15:41:37 · 14 answers · asked by Anonymous

I need help! And thanx for all the answers!!! :)

2007-09-15 15:40:46 · 11 answers · asked by aquasahara 2

is the least common multiple of 16 and 18=114??
is the least common multiple 144? please help thanks

2007-09-15 15:34:45 · 8 answers · asked by francine n 1

Lets say, i deposit $226 every month in an interest paying account for 10 years. At the end of 10 years, i have a total of 56287. What was the annual yield (interest) ?

2007-09-15 15:31:48 · 1 answers · asked by Confused 1

A student's grade in a course is determined by 6 quizzes and one examination. If the examination counts thrice as much as the each of the quizzes, what fraction of final grade is determined by the examination?

2007-09-15 15:21:52 · 7 answers · asked by Harry 1

x = y = (4-z)/4 2x=2-y=z

whats the best way to do this i am stuck

2007-09-15 15:15:32 · 1 answers · asked by sunchicano 2

I'm just interested in what you people do when you answer math questions on the Mathematics Section of Yahoo! Answers.

I thought that maybe you people just answer the questions and focus on the task, but I usually listen to music and eat while I do my questions.

There's gotta be some people that do things more weird then that while answer questions.

Please tell me what you do when you answer question!! Hopefully this will get interesting.

2007-09-15 15:04:22 · 6 answers · asked by UnknownD 6

2007-09-15 15:01:30 · 2 answers · asked by Frank R 1

Let f(x) = 6 - (x^2). For 0 http://img.photobucket.com/albums/v512/spike_reznor90/diagram-1.jpg

a) Find A(1).
b) For what value of w is A(w) a minimum?

Thanks!!

2007-09-15 14:38:05 · 3 answers · asked by Anonymous

I have this problem which I have really tried to do by my self, but I just cannot figure it out. Can someone please help me find the answers and please show me how to do it? THANKS SO MUCH!

***Complete the table of values

5x-4y=20

X Y
0 __
__ 0
-4 __
__ -4

I could not get a graph to paste on here. Sorry if it is confusing looking.

2007-09-15 14:35:06 · 7 answers · asked by Hope08 2

a) Combinations
There are 12 candidates for 4 positions

C(m,n)= __M !_______
(m - n)! n!

b) Permutations
There is 52 cards. How many hands you can deal taken five in each hand?

P(m,n)= ___m !________
(m - n)!

2007-09-15 14:22:43 · 2 answers · asked by Jesnes 1

The problem is:

A part of $5,000 was invested at 7% annual interest and the remaining at 8% annual interest. At the end of the year, the total amount received was $5398. How much money was invested at each rate?

....I know the procedure on how to do this problem, but i just need someone to validate me with my answer. Here is my work:

*Amount invested at 7% = X
*Amount invested at 8% = (5,000-X)

So, Investment= Rate X Amount = Interest

*7% investment= 0.07 rate (X) = 0.07
*% investment = 0.08 rate (5,000-X) = 0.08(5,000-X)
*Total investment = 0.07(X) + 0.08(5,000-X) = 5,398
So,: 0.07x + 400 - 0.08x = 5,398
(0.07-0.08)x = 5,398-400
(-0.01x/-0.01) = (4,998/-0.01)
(x = -498,800 @ 7%)

.....Is my answer correct? If not, would you please be so kind to tell me where my mistake is?

2007-09-15 14:21:01 · 3 answers · asked by dana c 1

A circle has a circumference of 100 yards. Find its area.
Use 3.14 inplace of pi.

Please show work to find the area.
The answer i got was 795.8 but in the back of the book they had got 796.2. I want to know how to do this so i can understand it on a test.
Thank-you for your time!

2007-09-15 14:17:33 · 5 answers · asked by donutss 1

I have no idea what this means....

5. Using the discriminant, determine the nature of the roots of the following equations (DO NOT SOLVE):

a) x2 + 4x – 1 = 0

b) 2n2 – 3n + 5 = 0


6. Find the roots using the quadratic formula.
a) 3x2 – 2x + 5 = 0

b) 2t2 + 6t – 3 = 0



THANKS EVERYBODY!!!

2007-09-15 14:15:43 · 12 answers · asked by crackr 3

How does

( 11(pie)/6) = ((square root 3)/2, 1/2)?

please tell me how you got this answer

2007-09-15 13:58:38 · 6 answers · asked by alfomale 1