can any one tell me how to do question 1, 3,4,5,6,7,8? and when u have answer plz remember to explain ur steps thnx

http://i74.photobucket.com/albums/i2...ng104/scan.jpg

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- Jun 4th 2006, 10:14 AMkansaineed help gr12
can any one tell me how to do question 1, 3,4,5,6,7,8? and when u have answer plz remember to explain ur steps thnx

http://i74.photobucket.com/albums/i2...ng104/scan.jpg - Jun 4th 2006, 10:30 AMmalaygoel
hello, I could give answer to your first question

when a square is inscribed in a circle, the length of the diagnol of the square =the diameter of the circle

2^(1/2)side of square = diagonal of square

area of square = 1/2 * diagonal * diagonal

S1 = 2 (diagonal of S1 =2)

when a circle is inscribed in a square, length of square = diameter of circle

diameter of O2= length of S1 = 2^(-1/2)* diagonal of S1 = 2^(1/2)

S2 = 1/2 * 2 = 1

Sn = 2*[(1/2)^(n-1)] - Jun 4th 2006, 03:44 PMThePerfectHackerQuote:

Originally Posted by**kansai**

You know that,

And that,

thus,

And that,

thus,

And that,

thus,

- Jun 4th 2006, 09:01 PMSoroban
Hello, kansai!

Here's #5 . . .

Quote:

5. For the matrices: and

(a) State the value of:

(b) Calculate:

means the element in the row and the column. .Hence:

. . . .Similarly:

The elements of matrix would have been written:

. . .

. . .

. . . I assume this means the*inverse*of

The steps are long and messy . . . so I'll omit them.

. . .

- Jun 5th 2006, 12:45 AMSoroban
Hello, kansai!

Here's #3 . . .

Quote:

For the map given on the right

(a) Represent the map with a network.

(b) Find the degree of each vertex.

(c) State whether the network is traceable and explain the reason.

Code:`(a)`

A - - - - - B

| / | \

| / | \

| C | \

| / | \

| / | \

D - - - - - E - - -F

. . .B: degree 4

. . .C: degree 2

. . .D: degree 3

. . .E: degree 3

. . .F: degree 2

(c) A network is traceable if it has at most two vertices of odd degree.

This network has two odd vertices (D and E) and hence is traceable. - Jun 5th 2006, 06:50 AMSoroban
Hello, kansai!

I don't "trust" #4 . . . It has some disturbing errors and the meaning is unclear.

. . Can you provide the*original*wording?

Quote:

4. The*NYS school*has four committees.

Each of these committees meet once a month.

Membership on these committees is as follows:

. . Committee A: Anna, John, Steven, Tom

. . Committee B: Debra, Jane John

. . Committee C: Annie, Debra, Larry, Tom

. . Committee D: Bobby, Debra, Grace, Mary, Steven

. . Committee E: Anna, Larry, Tom.

(a) Draw a network to illustrate the*connectivity*among the committees. .**?**

(b) Design a schedule with*minimum timeslots*for the committee meeting without conflicts. .**??**

I would assume that Annie is the same person as Anna, that someone mistyped the names.

. . But do I*dare*make that assumption?

The most glaring errors is that there are**five**committees.

(a) Connectivity is a term used in network theory, but not like this.

. . I assume they mean "common memberships" ?

(b) Minimum timeslots is a**very**sloppy term.

Does it mean "the shortest meetings"?

. . How about: "I call the meeting to order. .I will entertain a motion to adjourn . . ."

Does it mean "the shortest time-span" for the four (five?) meetings?

. .Schedule them consecutively with a one-minute break in between

. . (to allow the ten people to switch seats).

It is obvious that no two committees can meet at the same time.

. . So what is the question?

If I am correct about part (a), this should suffice:Code:`B`

/ | \

/ | \

/ | \

A - - - + - - - D

/ \ | /

/ \ | /

/ \ | /

E - - - - - C

- Jun 5th 2006, 04:55 PMwenlongURGENT can any one do question 6,7,8?
URGENT can any one do question 6,7,8?? and plz show ur steps and explation..............thnx

- Jun 5th 2006, 05:58 PMQuickQuote:

Originally Posted by**malaygoel**

__General high school math-need help gr12__ - Jun 5th 2006, 07:01 PMQuickQuestion 1
From my understanding of this question it works out like this.

the diagnol of the square (d) = the diameter of the circle (d), so the area =

= the length of one of the square's side

since s^2 is the area of the square this is the answer for .

Now the next circle has the diameter equal to the height of the square, so...

and now you apply the first formula to find the area of

This shows us that the area of

Considering me and malaygoel got different answers, could a third party check my work? - Jun 5th 2006, 07:08 PMmalaygoelQuote:

Originally Posted by**Quick**

- Jun 5th 2006, 07:22 PMQuickQuote:

how did you get d=s+s

- Jun 5th 2006, 07:25 PMmalaygoelQuote:

Originally Posted by**Quick**

- Jun 5th 2006, 07:41 PMQuickQuote:

diameter of O2= length of S1 = 2^(-1/2)* diagonal of S1 = 2^(1/2)

mine= yours=

However, there is a certain value of d that would make our equations the same.

but why would you say the diameter is 2? - Jun 5th 2006, 08:04 PMwenlong
friend got these answer for #1

plz tell me is it correct?

area of 1st square = 2

area of 2nd square= 1

area of 3rd square= 2^-1

area of Sn square= 2^2-n

is my friends answer correct? - Jun 5th 2006, 08:22 PMQuick
assuming that the diameter of the first circle is 2, then yes.