Mathematics - 25 October 2007

find the volume of the solid obtained by the rotating the region bounded by the given curves about the specified axis:
y=1/x^3
y=0
x=3
x=7
about y=-4

2007-10-25 15:47:36 · 2 answers · asked by Anonymous

1. A vertical circular cylinder has radius r ft. and height h ft. If the height and radius both increase at the constant rate of 2 ft/sec, then the rate in square feet per second at which the LATERAL SURFACE AREA increase is???

2. If f(x) = 10^x and
10^1.04 aprrox. equals 10.96
wat is the approx. value of f'(1)?

2007-10-25 15:38:39 · 2 answers · asked by Anonymous

Out of 80 problems these are the only couple I can't get so I figure I'm doing good Any help on these would be greatly apreciated since there all due tommrow.

Thanks


Find dy/dx by implicit differentiation


1.) cot(y)= x-y


2.) x=sec(1/4)

2007-10-25 15:25:24 · 2 answers · asked by Anonymous

2007-10-25 15:11:06 · 4 answers · asked by reka _baby 1

2007-10-25 15:07:46 · 14 answers · asked by Anonymous

In filling bags with flour, the automatic filling process dispenses amounts that follow a normal distrubution with a mean of 10.15kg and a standard deviation of .12kg. the label on the bags indicate that the amount of flour in the bags is 10kg.

(0) define a random variable (with a letter and in words) to be used in questions 1-3, and identify its probability distribution

(1) if you buy one bag of this flour, what is the probability that the bag contains at least as much flour as is promised on the label?

(2) what is the probability that the one bag you bough contains between 10.1 and 10.3kg?

(3) bags that are overfilled are prone to bursting. if a study suggests that 2percent of all bags are prone to bursting, what fill in kg do such bags have?

2007-10-25 15:04:11 · 1 answers · asked by Anonymous

y = 5 cot (2/x)

2007-10-25 14:50:32 · 4 answers · asked by Anonymous

Find the value of the constant c for which the range given by f(x) >=3.

2007-10-25 14:50:21 · 1 answers · asked by key C 1

solve each equations

3^x3 = 9^x

can you explain how you solve this?

2007-10-25 14:47:22 · 2 answers · asked by w s 3

2007-10-25 14:45:35 · 1 answers · asked by aorick21 2

2007-10-25 14:43:45 · 1 answers · asked by Ronny A 1

Is it true that sqrt(x + y) = sqrt(x) + sqrt(y)?

sqrt(x) = square root of x

2007-10-25 14:40:00 · 3 answers · asked by Anonymous

Now use a, b, and c to create a
trinomial ax2+bx+c. Can you factor this trinomial? How would you create a trinomial that will factor?

2007-10-25 14:38:04 · 1 answers · asked by Anonymous

2007-10-25 14:18:44 · 7 answers · asked by Anonymous

i need help with this one because i really dont get lcm to much so what is the lcm for 30 and 75

2007-10-25 14:06:28 · 5 answers · asked by Michael :D 2

Find equation of curve in cartesian coordinates describing all points in the plane which are equidistant from (1,0) and y= -2

2007-10-25 14:04:24 · 2 answers · asked by Maybell C 1

can u list all the prime numers ?
or is 5 prime?

2007-10-25 14:02:27 · 14 answers · asked by teardrops 1

the cosine of the angle between a and b is 4/21. Find P is a= 6i+3j-2k and b= -2i+pj-4k

2007-10-25 13:49:38 · 2 answers · asked by Anonymous

∫ arcsin(e^x)

2007-10-25 13:46:04 · 1 answers · asked by Anonymous

2007-10-25 13:40:04 · 10 answers · asked by Ryan F 1

2007-10-25 13:34:56 · 4 answers · asked by Sean R 1

not understanding this

2007-10-25 13:31:14 · 3 answers · asked by Anonymous

2007-10-25 13:23:03 · 9 answers · asked by gigi90232 2

2007-10-25 13:21:40 · 8 answers · asked by gigi90232 2

2007-10-25 13:18:47 · 4 answers · asked by greenie23510 1

Noel and dina factored the following trinomial. Only one of the students factored correctly

m(2squared)+x-20

Neol got factors (x+4)(x-5) Dina got (x-4)(x+5)

Who is correct

2007-10-25 13:16:19 · 5 answers · asked by Anonymous

The top is 10, the side is x, and the bottom is 8.

2007-10-25 13:15:11 · 2 answers · asked by texan3715 1

2007-10-25 13:13:47 · 9 answers · asked by Michael :D 2

Dragons have to meet for a brainstorm in a convention center. The delegates have to be selected to provide the maximum efficiency of the brainstorm session. A dragon has any amount of heads, and for any N, any amount of N-headed dragons is available if needed. The problem is that the size of the convention center is limited so no more than 1000 heads can fit into the assembly hall. The intellectual power of a dragon pack is the product of head numbers of dragons in the pack. How should an optimum pack look like (the total number of dragons, the head number distribution)?

taken from
http://www.math.utah.edu/~cherk/puzzles.html

2007-10-25 13:09:33 · 1 answers · asked by Mugen is Strong 7

2007-10-25 13:00:25 · 6 answers · asked by Maria 1