Mathematics - 5 October 2006

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2006-10-05 09:43:26 · 13 answers · asked by windwalker296 1

Hey everyone,

Just would like to know everyone's thoughts on this one. What do you think would be the best way to solve for numeric value of k:

(n/n-1) * (1/n) * (n/n+1) = (5/k)

I can't seem to get it--sure I'm overlooking something simple. Thanks!

2006-10-05 09:41:38 · 12 answers · asked by Michael T 2

2006-10-05 09:34:43 · 10 answers · asked by newyork123 2

2006-10-05 09:34:10 · 11 answers · asked by eduardaberry 1

2006-10-05 09:33:14 · 4 answers · asked by newyork123 2

the city requires a linear decline of 2.25% for all waste line traveling to the sewer. a house that is 45 foot above the sewer, how long of pipe is needed to run to the sewer to be in code?

2006-10-05 09:22:08 · 6 answers · asked by Anonymous

Use the variable x to represent the number

8 more than a number

2006-10-05 09:01:16 · 9 answers · asked by Anonymous

Find the equation of the line tangent to the curve Y= x^2 + 4X + 2 at the point x=1.

2006-10-05 09:01:14 · 5 answers · asked by Anonymous

2006-10-05 08:55:44 · 3 answers · asked by littlegirlsexxy 1

The second 9 is positive

2006-10-05 08:38:39 · 30 answers · asked by forestgreen33 3

For all questions here, round to the ten thousandths place if there are many decimal places. Do not round deciamls with 4 or less places:

3.14 x 2.83 =

Question 2:
60.3 x 0.24 =

Question 3:
4.103 x 0.209 =

Question 4:
321.43 x 0.209 =

Question 5:
248.85 / 10.5 =


Question 6:
0.1695 / 0.687 =

2006-10-05 08:30:30 · 9 answers · asked by Anonymous

There a perfect SQUARE whose EACH SIDE IS 400 inches. The SQUARE is divided into 7 equal pieces. What is the perimeter of only 2 pieces.....[out of the 7]??


pllleaasseee help!! =]
Thank You

2006-10-05 08:24:33 · 10 answers · asked by ♥ AnGeL ♥ 3

2006-10-05 08:13:07 · 12 answers · asked by SkepticThomas 2

Factor - ??
Independent events - ??
Dependent events - ??
Standard notation - ??

... Thanks... :)

2006-10-05 08:00:30 · 3 answers · asked by ♥ 6

The length of a rectangle is 1 in. more than twice its width. If the perimeter of the rectangle is 38 in., find the width of the rectangle. Define your variables, and show the equations you use. Solve the system of equations using the substitution method.

2006-10-05 07:59:53 · 12 answers · asked by Anonymous

3x – 4y = 8
6x – 2y = 10
I dont get this, can someone help me

2006-10-05 07:55:39 · 10 answers · asked by Anonymous

2(-2y - 5) < 2y - 22

2006-10-05 07:53:32 · 4 answers · asked by The Ultimate Answerer 3

Thanks! in advance

2006-10-05 07:41:35 · 8 answers · asked by cedar 3

can you show me step by step i really dont understand!
Let f(x)= -2x-1, h(x)= -x-1
Find (f◦h)(-3)
(that little dot isnt a multiplication dot but one of thos circle dots)
(f◦h)(-3)=

2006-10-05 07:31:11 · 8 answers · asked by Fries 4

2006-10-05 07:24:40 · 17 answers · asked by brandywine614 1

2006-10-05 07:22:52 · 15 answers · asked by brandywine614 1

See my other question also, please.

15.a. Show that f = max(f,0) + min(f,0). This particular way of writing f is fairly useful; the functions max(f,0) and min(f,0) are called the positive and negative parts of f.
b. A function f is nonnegative if f(x) is > or = 0 for all x. Prove that any function can be written f = g - h, where g and h are nonnegative, in infinitely many ways.

23. Suppose that f(g(x)) = I, where I(x) = x. Prove that
a. if x isnt equal to y, then g(x) isnt equal to g(y)
b. every number b can be written b = f(a) for some number a

2006-10-05 07:22:15 · 1 answers · asked by Andrew H 1

There are several problems, if you can help out on some (feel free to solve but even just tips on where to start or how to go about them) I'd greatly appreciate it. In answers, please put the number of which you're responding to. Thanks in advance!

2. If A, not equal to empty set, is bounded below, let B be the set of all lower bounds of A. Show that B is not equal to empty set, that B is bounded above, and that sup B is the greatest lower bound of A.

8. For which numbers a, b, c, and d will the function: F(x) = (ax +b)/(cx+d) satisfy f(f(x)) = x for all x such that f(f(x)) is defined.

13.
a. Prove that any function f with a domain of all reals can be written as f = E + O, where E is even and O is odd.
b. Prove that this way of writing f is unique.

2006-10-05 07:18:44 · 1 answers · asked by Andrew H 1

Adult tickets for a play cost $6 and child tickets cost $5. If there were 26 people at a performance and the theater collected $141 from ticket sales, how many children attended the play? Solve the system of equations using addition.

2006-10-05 07:09:27 · 6 answers · asked by brandywine614 1

[X^n,P]
[f(x),P] {where f(x) is a function of x}
[d2/dx2,P]
[e^(ax^3),d/dx]
[e^(ax),cos^2bx+sinbx] = 0

2006-10-05 07:06:30 · 2 answers · asked by nathaniel49 2

2/5 x = –10

2006-10-05 07:06:10 · 8 answers · asked by brandywine614 1

Consider the set Tof positive integers d for which there exists an integer n such that d evenly divides both (13n + 6) and (12n + 5). find the sum of the elements of T.

2006-10-05 07:03:35 · 5 answers · asked by Anonymous

can be
a)210
b)200
c)190
d)180

2006-10-05 07:03:27 · 7 answers · asked by Santha s 1

A box contains sweets of 6 different flavours. There are at least 2 sweets of each flavour. A girl selects 3 sweets from the box. Given that these sweets are not all of the same flavour, calculate the number of different ways she can select her 3 sweets.
Please explain your reasoning and give me some tips to help me understand permutation and combination once and for all for my november GCE AddMaths exams :)

Thanks!!

2006-10-05 07:02:36 · 2 answers · asked by Y L 2

Which property of the real numbers is illustrated by the following statement?
5 • (10 + 6) = 5 • 10 + 5 • 6
Commutative property of multiplication, or
Associative property of addition, or
Associative property of multiplication, or
Distributive property

2006-10-05 06:59:35 · 10 answers · asked by brandywine614 1