Mathematics - 11 September 2007

I have 34 and 20 what is the mean and how do i find it? and how do i find standard dievation?

2. other numbers are 40 and 20, i need to find mean and standard dievation.

2007-09-11 11:37:05 · 4 answers · asked by inside and out 1

how did hunting -gathering societies differ from forming societies?
how were native americans religious linked to the natural world?
Describe the social organization of the Iroquis.Why was the league of the Iroquis formed?
which of the three kinds of homes shown here would u expect to find in a hunting gathering society?explain. Which would be most suited to a settled forming community explain.

2007-09-11 11:33:43 · 7 answers · asked by Anonymous

2007-09-11 11:31:58 · 8 answers · asked by Anonymous

lim x^3 f(x) as x-->2 F(x) at this point is 2 but 2^3 is not the answer. What does the x^3 mean before f(x)?

2007-09-11 11:24:21 · 1 answers · asked by m_carl 1

cross mutipling is to hard how do you solve this problem and how did you get it

2007-09-11 11:16:53 · 11 answers · asked by Anonymous

1. A(-7,-7) and B (-7,-4) 2. A(9,-6) and B(5,-6)
3. A(7,1) and B(10,1) 4. A(-1,-7) and B(-1,-2)
5.(A(9,-4) and B(10,1) 6. A (16, -10) and B(1,-12)

If you could show some of the steps for these it would be appriciated. To those who answer 1/2 I'll award 4/5 stars. To those who answer all of these, I'll award you a best answer and 5/5 stars.

2007-09-11 11:16:19 · 3 answers · asked by Tameeka 1

2007-09-11 11:13:02 · 4 answers · asked by Jen 1

--On CH build a square having CH as one side. Label the top right vertex I and the top left vertex J. You have created rectangle EGIJ.

--Moving counter-clockwise reapeat the process of adding a new square on the long side of the last rectangle until u have expanded ur construction as far as your paper will allow. FOr perposses of comunication, countinue to label new vertices alphabetically in a counter-clockwise direction.

I have no idea how to draw this. Can someone help me!

2007-09-11 11:04:35 · 2 answers · asked by Girl 1

Let f(x) = -3(x+2)(x-4)(x-2)(x+6)


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so i need to find the zeros of that, i expanded it and put it in the form: 3(5x^2 + 16x -12) ... i dont know if that's right. now how do i find the zeros? the answer is -6, -2, 2 and 4.

how do i get it? show work plz!! thx for the help..


Also, how do you find the maximum number of turning points ??

2007-09-11 11:02:49 · 7 answers · asked by mystery_girl07 2

1. A(-7,-7) and B (-7,-4) 2. A(9,-6) and B(5,-6)
3. A(7,1) and B(10,1) 4. A(-1,-7) and B(-1,-2)
5.(A(9,-4) and B(10,1) 6. A (16, -10) and B(1,-12)

If you could show some of the steps for these it would be appriciated. To those who answer 1/2 I'll award 4/5 stars. To those who answer all of these, I'll award you a best answer and 5/5 stars.

2007-09-11 11:01:26 · 5 answers · asked by Tameeka 1

im so stupid! lol can someone help me please?
oh and can u plz show how u got them so im not as confused?

1. -2/5 - 7/10 = ?

2. -6 + -4 - 3 = ?

3. -4 - 3.5 + -2 = ?

4. -4 x 3.5 - |-2| = ?

Thank you!

2007-09-11 11:01:17 · 3 answers · asked by Anonymous

And how did you do it? I mean, the memory has to be wiped out by a teacher before you're allowed into the examination area right? Is it even possible?

2007-09-11 10:57:26 · 5 answers · asked by bunny_b. 2

Solve each system of equations. Let z be the parameter.

x + 2y + 3z = 11
2x – y + z = 2

2007-09-11 10:51:29 · 10 answers · asked by Anonymous

A function P matches each integer with its opposite( the integer with the same absolute value, but the opposite sign). A function D matches each integer with its double. A) write formulas for the functions p and d. b) write a formula for the composite function d o p : then compute (p o d)(15) and (d o P)(-12). c. write a formula for the composite function p o d: then compute (p o d)(15) and (p o d)(-12).
d) are these two composite functions equal? why? or why now?please explain as easy as posible, with steps if u can,, n also wat odes it mean!! diferent example...a function p matches each integer with its opposite(the integer with the same absolute value, but the oposite sign). a function t matches each integer with the integer that is two greater than the integer.. a write formulas for the functions p and t.
b) write a formula for the composite function t o p: then compute (t o P)(15) and (t o p)(-12).
c) write the formula for the composite function p o t: then rest below

2007-09-11 10:50:10 · 1 answers · asked by Unknown 2

If a plane starts at the equator and flies northeast (45 degrees north of east) continuously, how far does it fly until it reaches the north pole?
Assume the plane is a mathematical point and the earth is a perfect sphere of radius 4000 miles.
Can this problem be solved without using calculus to compute arc length of a curve in spherical coordinates?

2007-09-11 10:47:36 · 4 answers · asked by Jeffrey K 7

2007-09-11 10:45:45 · 7 answers · asked by Anonymous

The legs of a right triangle measures 3 and 4. Find to the nearest degree the measure of the smallest angle of this triangle.

Please show me how to do this

2007-09-11 10:45:31 · 4 answers · asked by Anonymous

What does a value of R = 0.80 mean? Explain using significant figures, standard deviation, OR standard error.

2007-09-11 10:40:39 · 1 answers · asked by Anonymous

on a TI-83 plus graphing calculator, how do you change the base for logarithms? how do i do, for example, log(8) base 2?

2007-09-11 10:39:43 · 4 answers · asked by Anonymous

Find the equation of the line tangent to the curve y=x+(1/x) at the point (5,26/5)

2007-09-11 10:34:57 · 1 answers · asked by Anonymous

How do you find the coordinates of the points on the curve where the tangent lines are vertical given that the curve is:
x^2 - xy + y^2 = 9.

I already found the derivative of the formula, I just don't know how to find the vertical lines. Please show your work

2007-09-11 10:32:47 · 1 answers · asked by chenying702 1

2007-09-11 10:27:09 · 4 answers · asked by Zazzare 2

2007-09-11 10:02:36 · 3 answers · asked by Why? 1

At the local candy store, three delicious candies are on sale.
A Sweetie, a Yummie and a Tastie together cost $.40.
A Tastie is over three times the price of a Sweetie.
Six Sweeties are worth more than a Yummie.
A Tastie, plus two Sweeties costs less than a Yummie.
Can you determine the price of each type of candy?

Tell how you got your answer.

2007-09-11 09:56:58 · 2 answers · asked by Anonymous

Thank You need work

2007-09-11 09:49:32 · 4 answers · asked by Shepard S 1

What is a counterexample in general.. and could you help me on a few of my questions of math... my teacher gives us our homework and does not explain it until tomorrow.. i know it is gay but i have to live with it...

write a counterexample if the statement is false
1. if an angle measures 94 degrees then it is obtuse
2. if terry lives in Tampa, then she lives in florida

Thanks for any answers and please dont answer this if you dont know the answer

2007-09-11 09:48:55 · 4 answers · asked by Cat Lover 4

integral (sqrt(7-2x^2)) / x^2

Using the tables I found that a=sqrt 7 , u=x (sqrt2). But when I plug it into the required integral its not the right answer. WHY?

2007-09-11 09:47:20 · 3 answers · asked by Anonymous

thank you

2007-09-11 09:46:25 · 5 answers · asked by Magnun S 3

what is w to the 2nd power subtract 1??? please factor. and explain step by step.

2007-09-11 09:42:00 · 2 answers · asked by Anonymous

2007-09-11 09:39:36 · 12 answers · asked by dbrizzle. 1