Mathematics - 5 December 2007

2007-12-05 04:20:10 · 6 answers · asked by Racheal H 1

I have GMT Time column in XL sheet, I need to convert to CST in next column. How to do?

2007-12-05 04:13:44 · 3 answers · asked by redlotus72 2

2007-12-05 04:11:06 · 7 answers · asked by NT 1

The answer should be -(1/(2x^3/2)) but I'm having trouble getting to it using limits.

I have to use limits on this question which makes it very annoying :( Any help on where to start would be appreciated

2007-12-05 03:59:00 · 5 answers · asked by John Avry 2

2007-12-05 03:51:07 · 6 answers · asked by kuc2215 2

Hi guys,
You see, I've got that equation that I can't solve, because I have to write it like that : a√b+c
This the equation: 2√50+6√5-√75
=10√2+6√5-5√3
Now, I really really need to have this written like the modal shown previously !
Thanks by advance

2007-12-05 03:41:54 · 5 answers · asked by Anonymous

I didn't know how to type out an integral symbol so here goes

http://i3.tinypic.com/6z3unid.jpg

2007-12-05 03:39:08 · 2 answers · asked by paintedladyinthecityoflies 1

I need help in figuring out the answers to these two questions.

1. A vertical circular cuylinder has radius r feet and height h feet. If the height and radius both increase at the constant rate of 2ft/sec, then the rate, in square feet per second, at which the lateral surface area increases is: Answer Choices: A.4(pie)r B.2pie(r+h) C. 4pie(r + h) D. 4(pie)(r)(h) E. 4(Pie)(h)


2.Two cars are traveling along perpendicular roads, car A at 40 mi/hr and car B at 60 mi/hr. At noon when car A reaches the intersection, car B is 90 mi away, and moving toward at it. At 1 P.M. the distance between cars is changing, in miles per hour, at the rate of: Answer Choices: A. -40 B. 68 C.4 D.-4 E. 40


Thank you so much in reading this and helping me out! Its greatly appreciated!!


:Erin

2007-12-05 03:36:06 · 2 answers · asked by Anonymous

Ok I have to factor these some how n they are difference of cubes problems, I have not the slightest clue on what to do ... When I see these problems I go blank, I'm Having a test on a bunch of difference of cubes problems so pleas explain to me what the hell to do ...


Sum of Cubes Pattern
a3 + b3 = (a + b)(a2 - ab + b2)
Difference of Cubes Pattern
a3 - b3 = (a - b)(a2 + ab + b2)


1. 64x^3 + 1
2. 1-125b^3
3. 8x^3y^6 + 27
4. a^3 b^6 – b^3
5. 27x^3 – 8y^3

The most I know is you have to find the GCF first.....
Thanks........

2007-12-05 03:33:24 · 5 answers · asked by Anonymous

A boy buys some packets of sweets for £1.20. If the sweets had been 3p a packet cheaper, he would have recieved 2 more packets for his money. How many packets did he buy?

2007-12-05 03:20:46 · 4 answers · asked by Cookz 1

Jo is practising pool on an American 9-ball pool table, where the balls are numbered from 1 to 9. Jo picks a geometric sequence and, if there are balls on the table whose numbers are in that sequence, then Jo pots all of them. Jo keeps picking geometric sequences (and potting the corresponding balls) until all nine balls have been potted.

If Jo is very good, and never misses a shot, what is the least number of geometric sequences that Jo needs to pick in order to clear the table?

HINT: You may need to use sequences with a ratio that is a whole number or a fraction.

2007-12-05 03:15:09 · 2 answers · asked by Anonymous

2007-12-05 03:13:29 · 6 answers · asked by Yankee C 1

a sequence is defined recursively. Find the first five terms

A_n= 2A(n-1)+A(n-2)
when: A_1= -2; A_2= 4

2007-12-05 03:12:25 · 2 answers · asked by JahAtmosphere 1

Write the following expression as a sum and/or difference of the logarithms.

log (all this next part is in one big parethesis: sqrt(x+2)/x^2-x


I know the rules....I just need the answer ASAP...I thought I knew the answer, but it was wrong and I don't know why? Please help me....I promise to give 10 to best answer! think the answer is (1/2 log (x+2)) - log x - log (x-2)........you all agree that just answered or anyone?

2007-12-05 03:08:12 · 6 answers · asked by ☺♠JonasJay♫♦ 5

Chandra has 2 liters of a 7% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 7 liters of 42% solution?

a. 5 liters of 57% solution
b. 5 liters of 56% solution
c. 5 liters of 54% solution
d. 5 liters of 59% solution

2007-12-05 03:03:57 · 2 answers · asked by . 1

2007-12-05 02:54:35 · 6 answers · asked by hey.goodlookin 2

{(x + 5) / ( 2) = (y + 17) / ( 4)

{(x / 4) = (2y + 8) / (8)

a. (3, -1)
b. (-1, 3)
c. infinite number of solutions
d. no solution

2007-12-05 02:54:07 · 2 answers · asked by . 1

Write the following expression as a sum and/or difference of the logarithms.

log((sqrt(x+2) / x^2-x))

I know the rules....I just need the answer ASAP...I thought I knew the answer, but it was wrong and I don't know why? Please help me....I promise to give 10 to best answer!

2007-12-05 02:52:31 · 6 answers · asked by ☺♠JonasJay♫♦ 5

a=41.5m, c=34.5m, B=151.5degrees

2007-12-05 02:35:12 · 9 answers · asked by Princess 2

plz help me solve...polynomial question

2007-12-05 02:34:02 · 7 answers · asked by shellyeph 1

I sorta know how to find out but I don't know rather you times it by 2 or 2.2

2007-12-05 02:11:46 · 7 answers · asked by Anonymous

express the sum using summation notation

-1+(2/2)+(-3/4)+(4/8)+...

2007-12-05 02:10:06 · 5 answers · asked by JahAtmosphere 1

2007-12-05 02:06:49 · 12 answers · asked by mehul t 1

plz help me solve!

2007-12-05 02:01:44 · 4 answers · asked by shellyeph 1

sinAcosB + cosAsinB tanA + tanB
------------------------------ = ------------------
cosAcosB - sinAsinB 1-tanAtanB

2007-12-05 02:00:09 · 3 answers · asked by Singh J 1

I have to find a whole number which when divided by itself gives itself as the answer

2007-12-05 01:56:27 · 9 answers · asked by zeal 2

A large novel is divided into a three-volume set. Volume one begins with page one with the pages being numbered consecutively from volume 1 through volume 3 (In other words, if the last page of volume 1 is 324, then the first page of volume 2 is 325). There are an equal number of pages in each volume. If the sum of the numbers of the first pages of each volume is 1674, how many pages does each volume have?

2007-12-05 01:51:23 · 5 answers · asked by Anonymous

Jasmine earned $4,000 from her business. She gave 1/5 of it to her daughter and son-in-law as a gift. She invested ½ of the remaining amount. How much did she have left?

2007-12-05 01:45:00 · 6 answers · asked by kimchee_boi 3

Please help me in figuring this out.


Using the domain values {-1, 0, 4}, find the range values for relation y=2x-10.

Range={-11, -10, -6}
Range={12, -10, 2}
Range={-12, -10, -2}
None of the above

2007-12-05 01:38:33 · 2 answers · asked by Sarah I 2

sqrt of 63 minus 2 sqrt of 28 + 5 sqrt of 7.

2007-12-05 01:20:54 · 5 answers · asked by Kat 1