Mathematics - 11 October 2007

Find the set of values of x for which (x - 6)^2 > 0

Ans: x < 4 or x > 9

Please show your workings clearly and explain..thanks

2007-10-11 23:50:39 · 4 answers · asked by Anonymous

Can someone please explain to me a simpler way of understanding standard deviation?

2007-10-11 23:39:54 · 2 answers · asked by ~♥Angel Of Music♥~ 5

(3/5,4/5) is a point on the unit circle, how do i find the angle it forms in terms of decimal number or pie?

2007-10-11 21:52:40 · 5 answers · asked by Shukie L 2

- what is the number who have asked today?
- would it disturb you if it was an odd number?
- it certainly disturbs me that the number is increasing
- what should their punishment be?
- are they an odd bunch, or a peculiar bunch

2007-10-11 21:49:48 · 6 answers · asked by smci 7

Question: Let A = [2 0 -1]
................... ........... [4 1 -4]
................... ........... [2 0 -1]
is A diagonalizable ?
If yes then find P and D such that
D = (p^-1)A(P)
where P^-1 means inverse of P

2007-10-11 21:39:11 · 3 answers · asked by amjad 1

i still seem to be struggling with limits here is the latest problem i don't understand

the question is:

The gravitational force exerted by earth on a unit mass at distance r from the center of the planet is

f(r) = GMr/R^3 if r GM/r^2 if r>or= to R
...where M is the mass of earth, R is its radius, and G is the gravitational constant. Is f a continuous function of r?


this is a piece wise fxn if that isn't clear.

2007-10-11 21:36:25 · 2 answers · asked by Brews 2

Is it:
A. 6
B. 7
C. 11
D. 12
E. 13

2007-10-11 21:34:25 · 25 answers · asked by illegal_worker 1

Is it:
A. 27
B. 34
C. 36
D. 45

2007-10-11 21:32:06 · 31 answers · asked by illegal_worker 1

Let m, n be positive integers and let a be an integer greater than 1. Show that (a^m − 1, a^n − 1) = a^(m,n) − 1.

How would I grind through it? Couldn't I use m>n with m=qn+r and then...

use GCD / Euclid's Algorithm.. and then..again..then..

2007-10-11 21:31:14 · 3 answers · asked by Unknown 1

For some reason I just can't get it. I keep waiting for that ah ha moment that hasn't came yet. I can't help my daughter at all with it.

2007-10-11 20:59:52 · 6 answers · asked by kitkat1640 6

i am sorta lost on finding limits, i think i understand the concepts, but am lacking in algebra possibly.

here is a prime question:

evaluate the limit lim x->7 (sqrt(x+2)+3/(x-7)

every time i try the problem, i end up with zero on the top and zero on the bottom... and i don't see anything that can factor.
what am i missing?

2007-10-11 20:39:15 · 4 answers · asked by Brews 2

I just asked a math question and found an old paper, that I also need help with, Im very bad at these and have tried multiple times already here are the questions......

3 over 8 + 5 over 16

2 and 7over 16 +1 and 1 over 4

1 and 1 over 16 * 1 and 1 over 8

3 over 16 8 3 over 4

2 * (3 and 3 over 4 + 1 and 1 over 16)

express as fraction or mixed numeral in lowest terms....

I would appreciate help very very much thank you :) :)

2007-10-11 20:38:29 · 10 answers · asked by Anonymous

2007-10-11 20:14:42 · 5 answers · asked by Anonymous

find all roots of -3+ 3 j , in exact polar form . How many inequivalent roots does this complex number have . Which root has the smallest argument. Thanks a lot for your help .

2007-10-11 19:49:16 · 3 answers · asked by Anonymous

Roger had 8,550 pesos more than Peter.If 5/8 of Peter's money is equal to 2/7 of Rogers money,

a. how much did Peter have?
b. how much did they have altogether?

2007-10-11 19:47:55 · 9 answers · asked by isay cute:) 1

2007-10-11 19:46:14 · 6 answers · asked by Michelle S 1

2007-10-11 19:17:09 · 17 answers · asked by NFLS121a 1

Using elimination. The answer is 12 and 8. Show work?

2007-10-11 19:04:27 · 12 answers · asked by Anonymous

2007-10-11 18:55:47 · 4 answers · asked by Anonymous

What is the GCF of 32 and 44?

2007-10-11 18:47:34 · 8 answers · asked by Anonymous

I'm helping my brother with his math hw and I think there is some rule for what sin(x^2) is but I can't remember. Either that or as it relates to differentiating sin(x^2). Do we even care that x is being squared when inside the sin function as opposed to sin^2(x)?

2007-10-11 18:43:57 · 2 answers · asked by brjacobso 2

The prime factorization of 720

2007-10-11 18:38:15 · 10 answers · asked by Joanna 1

(x-7)(x-8) - (x-9)^2 = 12

please help!!!! =[

2007-10-11 18:24:34 · 9 answers · asked by phresh 1

When you use the quotient rule to find the derivative of a function, does the denominator of the function have to have a variable or can it be a constant number?

2007-10-11 18:11:57 · 7 answers · asked by Anonymous

I have a circle with a radius of 6 units and a central angle of 33 degrees. How would I find the intercepted arc length and the area of that segment?

2007-10-11 18:08:11 · 2 answers · asked by Anonymous

40% of the students are REGISTERED to vote. 60% of those prefer candidate A and 40% prefer candidate B.

60% are NOT REGISTERED to vote. 30% prefer candidate A and 70% prefer candidate B.

if there are 10 REGISTERED voters, what is the probability of getting 2-5 (two to five) votes for candidate B? (there is only one answer)

any help would be appreciated. thanks in advance

2007-10-11 18:03:39 · 3 answers · asked by Andy T 2

A model for the velocity of the shuttle from liftoff at t=0 s until the solid rocket boosters were jettisoned at t=61.3 given by
v(t)=0.001149000t^3-0.08519t^2+12.52t-9.76

please find
the absolute maximum value
the absolute minimum value
of the acceleration of the shuttle between liftoff and the jettisoning of the boosters

2007-10-11 17:59:58 · 2 answers · asked by Anonymous

If the sides of a square are decreased by 2 cm, the area is decreased by 36 cm^2. What were the dimensions of the original square?

2007-10-11 17:45:06 · 7 answers · asked by Anonymous

write the linear function in slope intercept form with f(1) = 3 wth a slope of 7

2007-10-11 17:43:14 · 4 answers · asked by felicia 3 2

2007-10-11 17:37:21 · 7 answers · asked by Anonymous