Mathematics - 27 November 2007

2007-11-27 02:53:40 · 16 answers · asked by Anonymous

A truckload of nails contains x cartons. Each carton contains y boxes and each box contains z nails. The number of nails in the truckload is..? why?

2007-11-27 02:48:28 · 10 answers · asked by dz.dahood 2

2007-11-27 02:35:05 · 3 answers · asked by Anonymous

2007-11-27 02:08:50 · 3 answers · asked by Anonymous

Hi there,
I've been having a little bit of trouble with this derivative homework of mine.
It says that f(x) = (-4x -3) / (x^2 -x +4)
I need to find the zeros/roots of this function, and I only got a zero when x= - 3/4...are there any others?

Also, we need to find the intervals on which the function is increasing/decreasing.
I found the first derivative to be (4x^2 +6x -19) / (x^2 -x +4)^2
But I cannot find any x-value where f ' (x) is 0 or undefined...
Therefore I can't find when the function is increasing or decreasing.

I had no trouble with the second derivative and inflection points, but another question asks if the original function has any vertical asymptotes. I cannot find any, but did anyone else?

2007-11-27 01:50:15 · 4 answers · asked by silvershadow0001 1

Find Sin of 3 degrees

2007-11-27 01:44:09 · 5 answers · asked by joseph c 1

2007-11-27 01:22:12 · 4 answers · asked by blondie42 1

Could you help me prove this, please?

We say f:R --> R is uniformly differentiable if, for every eps > 0, there's delta > 0 such that |(f(y) - f(x))/( y - x) - f'(x)| < eps for every x and y such that 0 < | y - x | < delta.

Show that f is uniformly differentiable if, and only if, f' is uniformly continuous on R.

Thank you

2007-11-27 01:21:06 · 1 answers · asked by Tania 1

Ok i am stuck on this question.....

Locate and Classify all extrema for .....

f(x) = 6 / (x^2 + 3) on [-3,1]

2007-11-27 01:00:53 · 2 answers · asked by Anonymous

can you devise a relationship between the signs of
partial of f with respect to x
partial of f with respect to y
partial of g with respect to x
partial of f with respect to y

given two multivariable functions f and g and

grad(f) * grad (g)=0??

* means dot product

2007-11-27 00:40:18 · 2 answers · asked by junglegrl44 2

2007-11-27 00:33:51 · 8 answers · asked by Patricia S 1

2007-11-27 00:33:40 · 6 answers · asked by Anonymous

19. The velocity of an object fired directly upwars is given by V=35-9.8t, where (t) is time in seconds. Which inequality describes the velocity when (t) is between 0.5 and 1.5 seconds? {HINT: remember that when you multiply an inequality by a negative number, you must switch the direction of the inequality.}

MY WORK: solving inequalities

0.5 < 35-9.8t < 1.5
0.5-35 < 35-35-9.8t < 1.5-35
-34.5 < -9.8t < -33.5
-34/-9.8 > -9.8/-9.8 > -33.5/-9.8
3.52 > t > 3.41
[This is what I got, but is not in the answer choices. What am I doing wrong can someone please help me?]

Below are the answer choices:

A.)20.3 > 35-9.8t > 30.1
B.) 4.9 > t > 14.7
C.) 0.5 < t < 1.5
D.) v < 30.1
E.) 20.3 < 35-9.8t < 30.1
F.) 14.7 > 35-9.8 > 4.9

Sincerely,
Ms. Peanut Butter

2007-11-27 00:09:38 · 4 answers · asked by Anonymous

I scanned in the question from my book, and uploaded it in the form of an image.

http://members.aol.com/theaxegodjehan/img/mathsquestion.PNG

Please help! Thanks.

2007-11-27 00:06:16 · 4 answers · asked by Anonymous

can somebody solve this..the given is:
-if h=12,c=35 find a,b,x,and y.
and the formulas are:
-h^2 or h exponent of 2=xy
-a^2=cx
-b^2=cy

tnx 4 helping..!:)

2007-11-27 00:04:01 · 2 answers · asked by arr0n!!! 2

17.) If you invest $2000 at a rate of 8% per year, how many years will it take to earn at least $1000 in interest?
A.) 9 years
B.) 5.5 years
C.) 6 years
D.) 1year
E.) 3.75 years
F.) 6.25 years

20. What is the least amount of principal you can invest at an 8% interest rat to earn at least $1000 in interest in 3 years? (Round your answer to the nearest dollar.)
A.) $240
B.) $5167
C.) $20000
D.) $4167
E.) $6367
F.) cannot be determined

I am completely and utterly lost in these two problems can someone please show me how to do them or something?

Sincerely,
Ms. Peanut Butter

2007-11-27 00:03:20 · 1 answers · asked by Anonymous