Mathematics - 5 November 2007

[n(n - 3)!] / n!

2007-11-05 07:08:31 · 2 answers · asked by Katie 1

Find the exact functional value using the cosine sum or difference identity.

sec (-pi/12)

2007-11-05 07:07:42 · 2 answers · asked by I C 1

Say a test had 175 questions and you missed 20. How would you figure the percent you got right or wrong? It's been over 20 years since I was in school & I forgot how. Don't you divide 175 by 20?

2007-11-05 07:02:08 · 32 answers · asked by ♥bigmamma♥ 6

Through (7, -5) and (0, -3)

2007-11-05 06:58:13 · 3 answers · asked by . 1

I'm getting associates degree in business nad currently doing algebra do we need algebra in business degree?

Also what is the highest paying career or job in business?

2007-11-05 06:51:22 · 2 answers · asked by BeBop 3

I need to know how do you solve a square root of 75xto the power of 4?

I need to simplify. Assuming x represents a postive number.

2007-11-05 06:49:07 · 3 answers · asked by BeBop 3

Calling all Math whizzes.

Four friends are collecting canned food for needy families. There are two girls and two boys. The girls are named Danielle and Emily and the boys are named Ryan and Zach, The last names of the children are Anderson, Olson, Riley and Shin. Their agesare 8,10,11, and 12. The streets they live on are maple, nut, oak, and pinehill. The number of cans they collected were 100, 110, 132, and 144. Using the statements below, determine the students first name, last name, street they live on, and number of cans they collected.

1. Danielle and Shin play on the girls soccer tema.

2. Anderson and Zach ages are one tenth as much as the number of cans of food they each collected.

3. The boy that lives on maple collected more than olson.

4. The number of letters in the name of emily's street is the same as her age.

5. Emily is 2/3's as old as, and collected more cans of food than, the girls who lives on Oak.


thanks!

2007-11-05 06:46:31 · 4 answers · asked by Anonymous

2007-11-05 06:44:52 · 3 answers · asked by Geanine J 1

Find the minimum value of z = 2x + 3y subject to the constraints
5x + 3y > or = 15
x + 6y > or = 12
x > or = 0, y > or = 0


a) 5
b) 7
c) 9
d) 11

2007-11-05 06:36:58 · 1 answers · asked by brownk_1999 1

Which of these sets of points are the corner points for the feasible region satisfying the system of linear inequalities 2x + 8y < or = 32, 5x + 2y > or = 30, x> or =0, y > or =0?

a) (5,9), (4,0), (1/2, 4/9)
b) (0,4), (15, 0), (0, 0)
c) (0,4), (0,15), (4, 0), (4, 9)
d) (0, 4), (0, 15), (44/9, 25/9)

2007-11-05 06:35:54 · 2 answers · asked by brownk_1999 1

Which of these points does not satisfy the constraints?
6x + 8y <= 48, x + y <= 7, x >= 0, y >= 0


a) (1,6)
b) (4,3)
c) (6,1)
d) (1,4)

2007-11-05 06:34:44 · 1 answers · asked by brownk_1999 1

2007-11-05 06:29:02 · 3 answers · asked by Anonymous

find the critical points of optimization and whether the function is a maximum or minimum at these points.

5x^2 + 4xy + 3y^2 - 52x - 56y + 13

dz/dx = 10x + 0 + 0 - 52 - 0 + 0 = 0
10x - 52 = 0
x = 5,2

dz/dy = 0 + 0 + 6y - 0 - 56 + 0 = 0
6y - 56 = 0
y = 9,34

so, theres just one critical point then? P(5,2/9,34)?

or would it be:

(-5,2/9,34)
(5,2/-9,34)
(5,2/9,34)
(-5,2/-9,34)?

i assume its just P(5,2/9,34) ..so what I did was:

d^2z/dx^2 = 10

Zxx(5,2/9,34) = 5,2*10 = 52 > 0 Minimum

d^2z/dy^2 = 6

Zyy(5,2/9,34) = 6*9,34 = 56,04 > 0 Minimum

did i do this correctly? any help/comments will be appreciated. thanks:)

2007-11-05 06:27:37 · 1 answers · asked by Mathema-what?! 1

Which of the following is true.
7 > 11
-8 > -11
0 < -4
-8 > 12

2007-11-05 06:24:17 · 3 answers · asked by jewel7962002 1

True or False? Is 6 > or = 6

2007-11-05 06:23:41 · 12 answers · asked by jewel7962002 1

find the inflection point, concavity, i dont know how to do this, anyything would help, thanks

2007-11-05 06:21:13 · 1 answers · asked by syem64 2

The weekly revenue R, in dollars, from selling x calculators is

R(x) = -20x^2 + 1000x

a. Determine where the graph of R is increasing and where it is decreasing.


b. How many calculators need to be sold to maximize revenue?


c. What is the maximum revenue?

2007-11-05 06:15:32 · 3 answers · asked by tsLow 1

2007-11-05 06:09:21 · 4 answers · asked by malibu0108 1

a- 1.6 m/s
b- 340 m/s
c- 1600 m/s
d- 26 m/s


??

2007-11-05 06:04:11 · 5 answers · asked by Emma S 1

Dang. This one stumped me.

2007-11-05 05:56:08 · 4 answers · asked by John Cikkaaaaa 1

Its to do with rational exponents.

2007-11-05 05:54:49 · 4 answers · asked by marcus33 1

my hours is 31.0 that is why i have GPA 3.48, but how did my school came out of 108 pts.

2007-11-05 05:44:21 · 2 answers · asked by M_J 1

2007-11-05 05:41:29 · 5 answers · asked by marcus33 1

Hello, we just started with these friendly little critters in math today, and the teacher promised a 10 class mark (A+) if anyone could correctly write this function in the following format:

[-A if x > or = z
|A|=
[A if x < z

That's the best I can explain it, so if you can grasp my question please try to answer it. The function she wants us to write correctly is:

f(x)=| x*2 -5x +4 | (*Meaning elevated to).

The second degree equation gives two results: +4 and +1. Kudos in advance for the help!

2007-11-05 05:39:13 · 2 answers · asked by Murodski 1

Okay, I know you solve for x, but that would leave me with log 3 (13) and I don't think that's correct. Please let me know what you think. Thanks.

2007-11-05 05:33:33 · 3 answers · asked by Anonymous

A manufacturing factory produces a product, which can get the profit of $1000 for every unit that sold (that unit is non-defective). The factory produces 11 units of that product with one defective unit. In order to find the defective unit, the factory uses an investigating scheme on production items before they are sold.

The investigating scheme as follow:
- More than one unit can be checked for every single checking process.
- Every single checking process will cost $1000.
- After the checking process, each of the non-defective product can be sold and gain the profit of $1000.
- During the checking process, if the defective unit is investigated, all the units in that checking process will be considered as defective item and cannot be sold.

Based on the investigating scheme, what is the best strategy for the factory so that they can gain the maximum profit even in the worst situation. Find the profit that they can gain (in the worst situation).

2007-11-05 05:28:25 · 2 answers · asked by Anonymous

summation notation symbol (n=3 to infinity) 1/(3^n)
summation notation symbol (n=6 to infinity) (6^n)/(7^n)
please give a detail explanation i really need the help i have a quiz on this tomorrow

2007-11-05 05:25:48 · 2 answers · asked by Anonymous

2007-11-05 05:25:28 · 13 answers · asked by bb 2

Let S be an n-simplex. So, intuitively, S's intersection with a subspace of R^n is either empty or another simplex. Can I say it for sure (ie, is the above statement provable)?

2007-11-05 05:18:14 · 1 answers · asked by andremsb 1

PLEASE HELP VERY URGENT !!.. explain ur naswer in steps...

2007-11-05 05:04:36 · 7 answers · asked by iju 2