Mathematics (Science & Mathematics) - 22 November 2007

0 ⤊

How do you evaluate log base2 16?

Any help would be greatly appreciated, thanks

2007-11-22 09:45:06 · 7 answers · asked by ms_lotr_freak 3

6 ⤊

Probability that at least 3 people share the same birthday?

There are 15 people in a room. Calculate the probability that at least 3 of them have a common birthday.

2007-11-22 09:44:27 · 11 answers · asked by Dr D 7

1 ⤊

An important property of logarithms is:?

An important property of logarithms is
a) log base a (a) = 1
b) log base 1 (a) = a
c) log base 1 (1) = a
d) log base a (a) = a

2007-11-22 09:34:54 · 4 answers · asked by ms_lotr_freak 3

1 ⤊

Math Help - more interested in the process?

I am more interested in knowing how to achieve the answers w/o the benefit of a calculator) than simply what the answers are. (10 points to the first one that makes some sense to me)
Thanks in advance

1. simply: sqrt 49 + sqrt (-12)
2. simplify w/o neg. exponents (-2a^-3b^-7c^3)^-2
3. simply 27^(2/3)

2007-11-22 09:28:19 · 5 answers · asked by B K 1

1 ⤊

show that any infinite converging sequence in R contains a montone sequence?

(hint. consider such a sequence u_n whose limit is say L and assume that infinite number of terms satisfy say u_p someone please explain to me the procedure. thanks alot in advance!!

2007-11-22 09:25:02 · 2 answers · asked by mhthekidd 2

3 ⤊

What's 1440 minutes?

In days, weeks, or months?

2007-11-22 08:57:11 · 6 answers · asked by Anonymous

3 ⤊

what is the square root of 5000?

2007-11-22 08:51:07 · 9 answers · asked by dhernandez91 1

2 ⤊

Power of 1?

Why is any number raised to the first power = the same number?

Sample: x^1 = x, right? Now, why is that?

2007-11-22 08:49:50 · 7 answers · asked by Anonymous

1 ⤊

limit (x->4+) of ((x^2)-x)/(x-4)^2?

2007-11-22 08:46:06 · 1 answers · asked by Oscar A 2

0 ⤊

A function of a function?

Let f(x) = x² − 1. Evaluate the following:

(a) f(x^2 + 3x)

(b) f(sqrt{x^2 - 9}/(x-3)

2007-11-22 08:39:32 · 2 answers · asked by Anonymous

0 ⤊

Find the Midpoint?

Find the midpoint between (a/2, sqrt{3a}/2) and (x/3, sqrt{3y}/3)

2007-11-22 08:35:03 · 4 answers · asked by Anonymous

2 ⤊

Solving Compound Inequalities?

How do I write x+1>-2 and x+1<6
without using and? Could you please explain it? I don't get how to write it without and.

2007-11-22 08:06:42 · 6 answers · asked by Anonymous

2 ⤊

Which 9 non consecutive numbers the sum of their squares is 285?

the sum of the squares of the numbers from 1 to 9 is 285 but i need to know if it is posible to obtain another 9 number combination that the sum of their squares is 285

2007-11-22 08:01:38 · 2 answers · asked by Armando M 2

0 ⤊

1/n^(1+1/n) is convergent or divergent series where n is from 1 to infinity?

2007-11-22 07:47:26 · 2 answers · asked by abhin t 1

1 ⤊

Multiplying Square Roots...?

2√48 x 3√24 = ?

2007-11-22 07:43:49 · 6 answers · asked by CLUELESS! 1

0 ⤊

Please help me with these calculus problems: establishing the identities eeek?

you can answer all or one
please write out all the steps taken :-)

#1 (sin^3+cos^3)/(1-2cos^2)=
(sec-sin)/(tan-1)

#2 (tanA+tanB)(1-cotAcotB)+
(cotA+cotB)(1-tanAtanB)=0

#3 cos((3pi/2)+angle)=sin angle

#4( cos(A+B))/(cos(A-B))=
(1-tanAtanB)/(1+tanAtanB)

#5 sec(A-B)= (secAsecB)/(1+tanAtanB)

#6 (cos(A-B))(cos(A+B))= ((cos^2)A)-((sin^2)B)

A= alpha B=beta
thank you :-)

2007-11-22 07:43:28 · 2 answers · asked by Alina Z 2

1 ⤊

(5/4)x^2 + (1/2)x -22 = 0 ; x=?

(5/4)x^2 + (1/2)x -22 = 0
x[(5/4)x + 1/2] =0
x=?

2007-11-22 07:34:26 · 6 answers · asked by RogerDodger 1

3 ⤊

y= e^(x^2) find dy/dx PLEASE HELP!?

thank you!! :)

2007-11-22 07:28:11 · 6 answers · asked by a89411389 1

0 ⤊

*Quadratic Equation...!?

This is a new problem to me, I have never encountered a problem with the "4th power".

12x^4-31x^2+20=0

Plz explain step by step!

2007-11-22 07:25:23 · 7 answers · asked by CLUELESS! 1

0 ⤊

Wat is 3+4x=9x+13??

Please seriously you've gotta help me!!! )': pleeeaaasse?

2007-11-22 07:17:18 · 16 answers · asked by ♥ஜღAubreyღஜ♥ 2

0 ⤊

Exponents!?

i^2006

it is :
i to the 2006th power....!

i thought it was -2006 but its not! what is it then..?hm?

2007-11-22 07:15:06 · 4 answers · asked by CLUELESS! 1

1 ⤊

I need to solve 2x^2-3x-2=0 using the quadratic formula?

2007-11-22 06:45:12 · 9 answers · asked by Deborah J 1

0 ⤊

How do i prove that a real function is positive?

2007-11-22 06:39:33 · 4 answers · asked by homeboy187nic 2

0 ⤊

can someone help me re write this in radical notation: 2x^3/5?

2007-11-22 06:30:21 · 3 answers · asked by Anonymous

9 ⤊

The sum of four consecutive integers is 2. What is the smallest of the four integers?

Please explain

2007-11-22 06:27:41 · 12 answers · asked by Bobby S 3

3 ⤊

Another Very HARD Maths Question (well for me it is)!?

(This question is all about bearings and trigonomentry).

A helicopter has flown from its base on a bearing of 153 degrees. Its distance east of base is 19km. How far has the helicopter flown?

2007-11-22 06:27:29 · 3 answers · asked by Salsa034848 2

1 ⤊