Mathematics - 12 November 2007

A. 1/3
B. 1/5
C. 3/10
D. 7/20

2007-11-12 13:18:25 · 11 answers · asked by PETEY 1

A large football game field has an area of 400 square feet. A small practice field is made with every linear dimension half as large as the game field's dimensions. What is the area of the small practice field?

2007-11-12 12:52:05 · 12 answers · asked by GF 1

Does there exist a 2 x 2 matrix A such that ran(A) = ker(A)? if so find A.

2007-11-12 12:48:41 · 1 answers · asked by Anonymous

yOU ARE MANUFACTORING AND SELLING TWIDGETS AT A PRICE OF $16 EACH, and at that price we have been selling 200 twidgets per month. With each increase in price of $1 will cause 50 fewer twidgets to be sold. You have a variable cost of $900 per month, and a fixed cost of $8 per twidget.

Find the Revenue Function,
Total Cost Fucntion,
and
Profit Function.


CAN ANYONE HELP ME PLEASEEE?

2007-11-12 12:45:11 · 1 answers · asked by Sexymami 1

n - 3*sqrt(n) = 28


How do I solve this?

2007-11-12 12:36:04 · 8 answers · asked by DoWHATiDO 3

After the first digit, do the various digits appear with equal frequency.

2007-11-12 12:32:43 · 1 answers · asked by Roger Peters 2

(n x a - n) (n x a - n)

2007-11-12 12:25:33 · 3 answers · asked by Sarah L 2

If n^3 is a divisor of 10!, what is the greatest possible integer value of n?

2007-11-12 12:23:44 · 3 answers · asked by Anonymous

Two different quetsions

#1. The day after the election, the school newspaper headline read:"Donohoe wins! For every 3 votes for Trusty, there were 5 for Donohoe." If Trusty received 435 votes, how many votes did Donohoe receive?

#2. Four strips of paneling 40cm long and 4cm wide are arranged to form a square. What is the area of the inner square in cm squared?

2007-11-12 12:21:42 · 12 answers · asked by mistameter8292 1

2. 7+11.436+3.08
3. 0.33 + 1.11 +3.2
4. $6.15 + $8.86
5. $16.81 + $19.94 + $11.49
First estimate, then find each difference.
6. 8.91 -6.08=
7. 9.1- 6.05=
8. 4-1.29=
9. 9-0.45=

2007-11-12 12:20:37 · 1 answers · asked by rosemariestewart64 1

6x^2(p+q^2)-(p+q^2)
let u = (p+q^2)

6x^2u-u
(6x^2u-u)/u
6x^2-1

If this is not correct, please explain.

2007-11-12 12:20:22 · 2 answers · asked by Vampy 1

Please help.

2007-11-12 12:18:53 · 6 answers · asked by Brittany 2

-1/6d= -4
what does d equal.
thanks a lot!!

2007-11-12 12:17:34 · 8 answers · asked by mariah(: 3

Fing the slope of the midsegment of trapeziod ABCD given A(-2,-2) B(0,4) C(8,8) and D(4,-4). it has to be ether -1/3 or 1/2 or 3 or -2 thanks

2007-11-12 12:10:07 · 1 answers · asked by ☮ 5

(6x-3y+2)dx - (2x-y-1)dy=0

x^4 y' = -x^3 y - csc(xy)

[1+ y tan(xy) ]dx + x tan(xy) dy = 0


thanks

2007-11-12 12:03:47 · 1 answers · asked by enhein 1

Can some please explain how you get the answer to this geometry question?

A rancher has enough material for 271 meters of fence. She knows that a circle maximizes the
area-to-perimeter ratio, but a circular fence is too difficult to construct. She decides to simulate a circle
by building a fence in the shape of a regular polygon with as many sides as possible, but with not less
than five and not more than 15 sides. If she wishes to make each side a length of an even meter, and she
wishes to have no more than 2 meters left over, which regular polygon would you recommend she build,
and how long would each side be?

2007-11-12 11:54:02 · 1 answers · asked by Anonymous

A right circular cylinder is inscribed in a cone with height h and base radius r. Find the largest possible volume of such a cylinder.

2007-11-12 11:39:55 · 1 answers · asked by bosankasam 2

I am given: alpha = 45, a=3, c=4

I have to find beta, gamma, b

please help and explain this step by step, I want to get the idea of how to do these. thanks

2007-11-12 11:17:38 · 2 answers · asked by Anonymous

There are 7 girls.
Each girl has 7 backpacks.
Inside each backpack is 7 Large Kittens.
For each Large Kitten, there are 7 Small Kittens.

How many legs are there?

2007-11-12 11:14:49 · 23 answers · asked by [bksnapple] 1

I need to know how to do the proof for that.... Corresponding altitudes of any two similar triangles have the same ratio as the corresponding sides

2007-11-12 11:12:44 · 7 answers · asked by Tigger 2

I don't want an answer, i want to see how you did it. I have learnt find a lcd, the equation is
3x/4 - 2 = x/6 i really want to learn it so please help thank you.

2007-11-12 10:52:10 · 6 answers · asked by Anonymous

how would the graph of the following look like(since u cant exactly graph them here)
1. x=y^2+2 y^2 means y squared
2. x=y^2-2y
3. y=negative radical 4-x(this is underneath the radical and negative is outside

thanks!

2007-11-12 10:31:57 · 1 answers · asked by tennisgrl9294 3

Find the derivative of f(x)=4√x using the definition of a derivative.

2007-11-12 10:26:02 · 8 answers · asked by oriolesfan2323 4

I'm simply stuck.


Problem:
A plane is flying horizontally 1 mile up at a speed of 500mph when it passes over a radar station.
Find the rate at which the distance from the plane to the station is increasing when the plane is 2 miles away from the station.

2007-11-12 10:17:35 · 1 answers · asked by Anonymous

2007-11-12 10:15:08 · 4 answers · asked by mikegemmati 1

what is the derivative of
3pieh - pieh^3

where h=height

thanks!!!

2007-11-12 10:14:31 · 2 answers · asked by Anonymous

What should I divide or multiply by with -2=0y? I'm stuck once again :p

2007-11-12 10:09:41 · 6 answers · asked by Kitade 2

what is 80% of 20?
what is 40% of 70?
16% of 125 is what number?
20 is 80% of what number
20% of what number is 48?
42 is 30% of what number?
50 is 25% of what number?

thank you very much if u do there

2007-11-12 10:08:49 · 8 answers · asked by Mikey j 1

2007-11-12 10:06:36 · 18 answers · asked by Diane C 1

Time spent using e-mail per session is normally distributed with mean of 8 minutes and standard deviation of 2 minutes. If you select a random sample of 25 sessions

a)What is the probability that the sample mean is between 7.8 and 8.2 minutes?
b)What is the probability that the sample mean is between 7.5 and 8 minutes
c)If you select a random sample of 100 sessions what is the probability that the sample mean is between 7.8 and 8.2 minutes

2007-11-12 10:05:14 · 1 answers · asked by Anonymous