Science & Mathematics - 11 January 2007

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2007-01-11 05:20:08 · 5 answers · asked by rissa1376 1 in Mathematics

Prove that the least value of (A*Sec(θ) – B*Tan(θ)) is the Square root of (A^2 – B^2) ?

Please take your time and consult with others, i really need the answer within 24 Hrs. This is for my little brother.

Please see my other math questions.

Thank you very much.

You can contact me at (dasjame@yahoo.com)

2007-01-11 05:19:07 · 2 answers · asked by Jame D 1 in Mathematics

Suppose you have a Sample standard deviation of 0.393 for unemployment in USA and a Sample standard deviation of 0.260 for the crimes committed in USA. How would you compare these two? what can you observe by the two standard deviations?

2007-01-11 05:18:24 · 5 answers · asked by Anonymous in Mathematics

2007-01-11 05:17:05 · 10 answers · asked by cheeky chick 2 in Zoology

each person in the u.s. produces approximately 3.5 pounds of trash each day. write an expression representing the pounds of trash produce in a day by a family that has x members.

please help me thans so much

2007-01-11 05:16:16 · 8 answers · asked by Anonymous in Mathematics

Prove that x^4-4x-1=0 has two different real roots?

Please take your time and consult with others, i really need the answer within 24 Hrs. This is for my little brother.

Please see my other math questions.

Thank you very much.

You can contact me at (dasjame@yahoo.com)

2007-01-11 05:15:01 · 1 answers · asked by Jame D 1 in Mathematics

been out of school for 21 years trying to learn how to solve equations with fractions example 2/x+5/2=4-2/3x

2007-01-11 05:13:34 · 5 answers · asked by Anonymous in Mathematics

(a^1/10) (b^ -1/5) = ?


The letter a has an exponent of 1/10
The letter b, has an exponent of -1/5

2007-01-11 05:13:00 · 2 answers · asked by Anonymous in Mathematics

2007-01-11 05:11:56 · 18 answers · asked by kms k 1 in Geography

thank you

2007-01-11 05:11:33 · 9 answers · asked by SJ 2 in Biology

plz explain elaborately... hope sm1 would help... wd be grateful if reply quickly coz i ve exams soon abt it...

2007-01-11 05:11:09 · 1 answers · asked by freeze_madhu 1 in Medicine

You have five numbers which are 7,7,7,7 and 1.
You can use addition(+), subtraction(-), multiplication(*) and division(/) operations so many times. You can also use paranthesis. The goal is to get 100 by using these numbers.

2007-01-11 05:10:52 · 4 answers · asked by Salih D 1 in Mathematics

(a^4/7) (b^ - 4/7)= ?

The letter a, has an exponent of 4/7
The letter b, has an exponent of - 4/7

I got 1 as the answer.

2007-01-11 05:10:46 · 2 answers · asked by Anonymous in Mathematics

2007-01-11 05:09:50 · 4 answers · asked by j_abe1 1 in Weather

i've search n search but cant seem 2 find da ansa

HELP!!!!

2007-01-11 05:09:45 · 1 answers · asked by SJ 2 in Biology

If F(x) = Sin(x) Cos^3(x), prove that minimum value of F(x) be when Sin^2(x) = 1/4?

Please take your time and consult with others, i really need the answer within 24 Hrs. This is for my little brother.

Please see my other math questions.

Thank you very much.

You can contact me at (dasjame@yahoo.com)

2007-01-11 05:09:44 · 1 answers · asked by Jame D 1 in Mathematics

2007-01-11 05:07:42 · 3 answers · asked by MARGARET M 1 in Geography

3y^2/5

3y has an exponent of 2/5.

2007-01-11 05:05:20 · 4 answers · asked by Anonymous in Mathematics

then is there a point in time in the middle stage of the river where the river flowing in the way from high tide and the water flowing out the way from the gravity meets??

2007-01-11 05:03:26 · 2 answers · asked by tragamin06 1 in Geography

I know it is A Moon on the Planet Saturn.

2007-01-11 05:03:26 · 3 answers · asked by Anonymous in Astronomy & Space

2007-01-11 05:03:02 · 2 answers · asked by abattalino@snet.net 1 in Geography

Step by step please

(1/2p^2q)^3 (2pq^2)^4

2007-01-11 05:01:11 · 6 answers · asked by James A 1 in Mathematics

2007-01-11 04:59:34 · 22 answers · asked by aydin v 1 in Mathematics

How are the alveoli and the pulmonary capillaries arranged so that diffusion distances are at a minimum ?

2007-01-11 04:58:34 · 2 answers · asked by nargis 2 in Biology

2007-01-11 04:57:59 · 5 answers · asked by Soopersawnik 1 in Zoology

Calculate the number of moles of solute present in each of the following solutions:

245 mL of 1.50 M HNO3 (aq)

50.0 mg of an aqueous solution that is 1.25 m NaCl

75.0 g of an aqueous solution that is 1.50% sucrose (C12H22O11) by mass

2007-01-11 04:54:27 · 2 answers · asked by bosox1989 1 in Chemistry

How many people love severe weather? Thunderstorms. Tornadoes. Hurricanes. The real atmospheric stuff?

2007-01-11 04:53:34 · 11 answers · asked by ? 5 in Weather

1. Convert into cartesian form

r(1 + sinANGLE) = a



2. Find the equation of the plane through the point (2,1,3) which is normal to the vector n = 2i +5j - 3k.



3. Find dy/dx at point x = π, y = π/2 where x and y are related through the equation

sin ( x + 2y ) + x^3 - 4x(y^2)


Any help on any questions would be appreciated, im a bit stuck.

2007-01-11 04:52:56 · 4 answers · asked by Z0LA 1 in Mathematics

X=Y
X^2=XY
Y^2=XY
(X+Y)(X-Y)= Y(X-Y)
devide by (X-Y)
X+Y=Y
if X=1
then Y=1
so 1+1=1?

2007-01-11 04:50:04 · 20 answers · asked by trevelan7 2 in Mathematics

In other words, if a straight line was drawn from Fresno, California throguh the centerr of the earth, where would it come out on the other side, its exact geographic opposite?

2007-01-11 04:49:38 · 3 answers · asked by kveldulf_gondlir 6 in Geography