Mathematics - 28 October 2007

lim sec pie x/6 = sec 7pie/6 i dont have a calculator with
x---►7 me so im stuck

2007-10-28 12:32:35 · 1 answers · asked by ♥yessy♥ 2

please

2007-10-28 12:32:20 · 2 answers · asked by Anonymous

This is a math question that my dad bet me no one will know. Prove him wrong please!!

2007-10-28 12:28:54 · 4 answers · asked by bradenshaffer 1

x - 3 = sqrt(x - 1)

2007-10-28 12:27:05 · 3 answers · asked by Anonymous

hi im a freshman in high school who needs help with this math. can someone help me answer these questions?

Solve each formula in terms of the given variable
1. 3n-t= s;t

2. b+3/e=f/2;e

3. w=2xyz; y

4. k=3mh+3;h

5. ab=6+cd; a

6. 2a+4b=d;b

7. 4xy+3=5z; y

8. -2(3a-b)=c;b

2007-10-28 12:19:30 · 3 answers · asked by Anonymous

okk i know the answer to this question, but how do you exactly solve it? How do you find the value of x?

4 = 2x +2

2007-10-28 12:18:36 · 36 answers · asked by Sarah B 1

x^3 - 2x^2 = 63x

2007-10-28 12:17:14 · 3 answers · asked by Anonymous

81(3/2)

2007-10-28 12:13:04 · 2 answers · asked by Lu Y 1

graph y < |1/2x – 4| + 3. Label the vertex and 2 symmetric points.

2007-10-28 12:11:06 · 1 answers · asked by San Fran Kid 2

2007-10-28 12:09:16 · 2 answers · asked by sknw2004 1

5/ y - 2 + 2/ y + 2

2007-10-28 12:08:51 · 3 answers · asked by Pep C 1

When the sale was 0.25 finished, Class A turned in $26.92. When the sale was half over, Class B turned in $38.25. Class C turned in $62.38 when the sale was 0.75 finished. Assuming that each class continues to sell candy bars at these rates, how much money will be raised by the sale??...Please explain how worked

2007-10-28 12:08:05 · 1 answers · asked by ilovebasketball 2

x^2 - 9
5x + 15

2007-10-28 12:03:43 · 2 answers · asked by Pep C 1

Yes, this is part of my homework. I've never been good at it, but I am trying. This question really floors me. When I think of all possible shapes, I can't imagine this being even remotely possible at all. However, I don't want to overlook anything.

Please provide your input. I don't believe it is possible, not without the shapes being identical. If you have a different perspective, please do share.

2007-10-28 11:54:22 · 7 answers · asked by Mike's Girl 3

2x - 3y= 2
-5x + 2y= -16

and

3x + 5y= -19
5x - 2y= 20

it says to find the values of x and y.
i tried doing the first set and got -2 for x and y, when i put it into the computer it said that was wrong, so i was to frustrated to even attempt the second problem.

2007-10-28 11:52:14 · 7 answers · asked by Lilly 2

Okay I have homework for Science and they are asking me to give them the average. My set of data had three trials and at the end I have the average of all three of the trials. Do I add all of the numbers plus the average and then divide it by 3 or 4? thanks....

2007-10-28 11:50:40 · 3 answers · asked by Anonymous

a. 2sqrt. 3
b. 3 sqrt. 3/2
c. 3 sqrt. 2
d. 2 sqrt. 3/3

2007-10-28 11:49:08 · 3 answers · asked by Anonymous

A traffic flow of 1.440 cars during a 24 hour period is equivalent to a rate of how many cars per minute?
A- 240
B- 120
C- 60
D-24
E-1
please if ur not sure dont answer

2007-10-28 11:42:41 · 7 answers · asked by Anonymous

I seem to be clueless on almost all of it if any one could possibly do a few from each section it would be of great help to me. Thank you

For each parabola, determine: a)how it opens b)width c)vertex d)axis e)focus f)directrix g)y-int or x-int.
1)2x+6y^2=0
a)left
2)-8y=-x^2
a)up
3)y=-1/3(x-2)^2+7
a)down
4)x=5(y+3)^2-4
a)right
5)y+1=-1/4(x-3)^2
a)down
6)y^2-4x-2y=3
a)right
Write the equation for the parabola with:
7)vertex(0,0); focus(-5,0)

8)vertex:(0,0);directrix; x=-2

9)focus(6,0); y-6

Find the a. center and b. radius of each circle
10) x^2+(y+3)^2=36
(0,0); 6
11)(x+5)^2+(y-2)^2=10
(-5,2); sqr. of 10
12)10x^2+10y^2=70
(0,0);sqr. 7
13)4x^2=4y^2=20x-16y+37=0

Write the equation of a circle with:
14)center:(-2,-1); radius= sqr. of 8
(x+2)^2+(y+1)^2=8
For each ellipse find a) center b)vertices c)co. vertices d)foci
15)49x^2+y ^2=49

16)9x^2+25y^2=225

17)(x+3)^2/25 + (y+2)^2/49=1

18)3x^2+6x+5y^2-20y-13=0

Write the equation of an ellipse with:
19)foci(+or -5, 0) co. vertices (0, +or-2)

20)height 20 width 28 center (0,0)

21)center (0.-2) vertical major axis length 6, minor axis length 2

2007-10-28 11:40:58 · 1 answers · asked by Danielle M 1

what year will the population be 30 000?

And also, I need help completing the square where 3x^2 - 5 =22 and another question where b^2 +20b = -80 (in this question i need to find out what x and y equal as well)

I have a test coming up and i need help with this!
Thanks! Even help for one question will be greatly appreciated!

2007-10-28 11:31:30 · 2 answers · asked by Anonymous

2007-10-28 11:28:08 · 1 answers · asked by lovebird 3

1. squared 5x + 10 - 15 = 0
2. squared 2x + 6 + 2 = 0
3. Find the distance between ( -3, -2) and (1,4)

2007-10-28 11:18:49 · 3 answers · asked by texan3715 1

a. 3, 5, 7
b. 13, 14, 15
c. 15, 36, 39
d. 5, 10, 13

2007-10-28 11:18:36 · 7 answers · asked by Anonymous

2007-10-28 10:49:37 · 9 answers · asked by Anonymous

I found the derivative to be 2e^(2x) - e^(-x), but I can't figure out how to solve for x.

2007-10-28 10:47:04 · 3 answers · asked by Anonymous

2007-10-28 10:38:18 · 2 answers · asked by Anonymous

I dont fully understand the taylor approx from calc 3c...could you help me out with this problem...y'=t/y y(0)=1 at y(.5) and y(1) when h=.1

thanks work will help a lot...any little bit cause i have more problems involving this

2007-10-28 10:26:13 · 2 answers · asked by dimachevelle 2

Birth weights of ewes are normally distributed with a mean of 4.29 kg and a standard deviation of 0.13. What is the probability a randomly selected eye will have a weight between 4.5 and 4.8 kg?

Please help me by showing me step by step.....I don't understand it any other way.....thanks!

2007-10-28 10:03:28 · 1 answers · asked by Tiffany H 1

I need to determine a, width b, vertex c, axis d, focus e, directrix f, y-intercept/ x-intercept

im posting two different king, an x= and a y= help on both would be appreciated.
1.) y= -1/3(x-2)^2 +7
2.) x= 5(y+3)^2-4

2007-10-28 09:51:13 · 1 answers · asked by Danielle M 1

I need to prove how AB = 1
when Asin0+cos0=1 and Bsin0-cos0=1

0 being phaeta. (oO" don't know how to make it any other way.)

2007-10-28 09:46:58 · 3 answers · asked by jslouie88 1