Mathematics - 15 December 2007

find the total distance traveled by the particle from time t=0 until time t=3

2007-12-15 23:44:35 · 6 answers · asked by help! 1

2007-12-15 23:10:24 · 4 answers · asked by jyotirmoy 2

y = (lnx)/(ln3). Find y'.

The answer is 1/(xln3). Can someone show the work and rules used?

Thanks!

2007-12-15 21:09:49 · 4 answers · asked by Anonymous

I heard Lisa Jardine say, on BBC Radio 4, that 2 is a unique prime number because it is the only even one. Is this not only as significant as saying that 3 is unique because it is the only prime number that is divisible by 3 or that 5 is unique because it is the only prime number that is divisible by 5?

2007-12-15 20:45:14 · 12 answers · asked by Maurice T 1

2007-12-15 20:23:35 · 12 answers · asked by Matthew A 1

2007-12-15 20:18:09 · 9 answers · asked by Anonymous

I know it's kinda easy to answer this, but I forgot! Is the answer x to the sixth power (x6) or s to the eight power (x8)?

I say it's x6 but my friend disagrees and says it's x8..please help me!! I'm having a beg test tomorrow. Thanks! :D

2007-12-15 20:17:22 · 8 answers · asked by Anonymous

2007-12-15 20:11:45 · 5 answers · asked by Anonymous

help please!


6x^2 + 19x + 8 = 0

a. x = 3/8; -177/50
b. x = -3/8; 177/50
c. x = 8/3; 1/2
d. x = -8/3; -1/2

2007-12-15 19:19:47 · 8 answers · asked by anna 1

Here are the answer choices:

A) equilateral
B) right
C) acute
D) scalene
E) obtuse

When you answer it, can you tell me how you did it? Please? thanks.

2007-12-15 19:00:05 · 8 answers · asked by Anonymous

Solve.

(2z - 1)^2 = 25





Let r(x) = 5x + 1 and s(x) = x^2 - 5

2007-12-15 19:00:02 · 3 answers · asked by Anonymous

1.) (-12.2)x4(x)
2.) -5/6 (-60/2) x^2
3.) -x^2 - x (2x-4)
* please show all the please and thank you so much!! :]]

2007-12-15 18:34:04 · 2 answers · asked by Clueless Person 1

2007-12-15 18:15:25 · 9 answers · asked by Stacy M 1

I just graded an entire exam out of 100 points, now I have to turn the grade into points on a scale out of 15. How do I do that? Im a humanities person, not a math major dammit! :-(

2007-12-15 18:01:50 · 6 answers · asked by Anonymous

A previous question asked about a root of:
f(x) = 4x^7 +6x^6 +3x^5 +250x^4 +1000x^3 +75x^2 -20x +17

Can you estimate or generalize approximately about the roots, using only, pencil and paper, factorizations or approximations? (no calculators, computers, solvers or Newton-Raphson. See how far you can get using your head!).
Can you at least bound the regions in which each root lies, by identifying the zero-crossings of f?

Two ideas: a) since all terms other than "-20x" are positive, most roots will be negative.
Hence it might make it algebraically easier to substitute u→(-x) and consider
f(u) = -4u^7 +6u^6 -3u^5 +250u^4 -1000u^3 +75u^2 +20u +17

b) I'm thinking one promising way might be to regard it as the superposition of two (or more) polynomials, a high-order one and a lower-order one.

Your thoughts?

[ http://answers.yahoo.com/question/index?qid=20071215210154AAY3BhC ]

2007-12-15 17:15:55 · 2 answers · asked by smci 7

An aircraft with a constant speed in still air travels 4800 km with a constant tailwind in 4 hours. With the same wind now against the aircraft, it takes 5 hours to make the return trip. What was the speed of the wind, in km/hr?

a. 100

b. 110

c. 120

d. 125

e. 900

f. 990

g. 1080

h. 1125

i. none of these

I get to the point of
4800/4=1200
4800/5=960
then i don't know how to go from there

2007-12-15 17:04:23 · 3 answers · asked by Lili S 1

please write out the problem

2007-12-15 16:55:24 · 6 answers · asked by dirtycav21 1

9x^-4=0? trying to figure it out for hours

2007-12-15 16:53:04 · 14 answers · asked by Anonymous

the teacher didn't provide a correct answer.. the one i came up with was 3 square root of 3/2, dunno if it's right.. and please put your work process in your answer :)

2007-12-15 16:50:23 · 6 answers · asked by Anonymous

can you help with this.....
find the equation of the parabola with vertex(1,5) and passing the point (2,7)

2007-12-15 16:47:22 · 1 answers · asked by mathhelp 3

a) √7(B+C)

b) ABC - pie, pie = 3.14159

2007-12-15 16:43:36 · 3 answers · asked by matchamatics 1

Bewildering Math assignment


A vertical radio antenna is to be built on a hill which makes an angle of 6 (degrees) with the horizontal. If guy wires are to be attached at a point that is 75.0 m up on the antenna and at points 50.0 m from the base of antenna what will be the length of guy wires which are positioned up and directly down the hill ?

This is all that i have . =( if possible could u show some working out

2007-12-15 16:37:19 · 2 answers · asked by Anonymous

2007-12-15 16:28:39 · 5 answers · asked by dirtycav21 1

1.x+3y=5
x+4y=6

2.p-3q=-1
5p+16q=5

3. 300x-y=130
200x+y=120

2007-12-15 16:21:20 · 2 answers · asked by Frannie 2

Find the smallest positive integer which, when divided in turn by 21, 23, and 25, leaves respective remainders of 8,1, and 11.

2007-12-15 16:20:11 · 4 answers · asked by Quagmire77 1

a. (1/2) ln 2

b. (1/3) ln 2

c. (1/3) ln 3

d. (1/2) ln 3

e. ln 2

f. ln 3

g. none of these

2007-12-15 16:19:37 · 3 answers · asked by ace 1

a. center (-5, 4); radius 6

b. center (-5, 4); radius 7

c. center (5, -4); radius 6

d. center (5, -4); radius 7

e. center (-5, -4); radius 6

f. center (5, 4); radius 6

g. center (-5, -4); radius 7

h. center (5, 4); radius 7

i. none of these

2007-12-15 16:18:16 · 3 answers · asked by ace 1

2007-12-15 16:17:54 · 1 answers · asked by Quagmire77 1

^2 means exponent to x

2007-12-15 16:15:31 · 6 answers · asked by diva 1

a. x4 - 4x3 - x2 + 4x + 6

b. x4 - 4x3 + x2 - 4x + 6

c. x4 - 6x3 + x2 - 4x - 8

d. x4 + 4x3 - x2 - 4x - 8

e. x4 + 6x3 - x2 - 4x + 6

f. x4 + 4x3 + x2 - 4x - 8

g. none of these

2007-12-15 16:13:41 · 5 answers · asked by ace 1