Mathematics - 26 September 2007

i need the this power in standard form.

2007-09-26 14:47:04 · 9 answers · asked by Anonymous

Bob and Bill were washing cars. Bob can wash a car in 6 minutes. Bill can wash a car in 8 minutes. How long will it take if Bob and Bill wash a car together?

P.S. The answer is NOT 7.

2007-09-26 14:44:07 · 20 answers · asked by abcw 3

How do I solve this problem:
In a fable, a poor man received a reward of 2 grains of rice of rice on one day. On the second day, he received 2 to the 2nd power grains of rice. On the third day, he received 2 to the 3rd power. What is the total amount by 10 days??

Is there a faster formula I can use other than add each day's up??

2007-09-26 14:42:02 · 5 answers · asked by rocksterenergy53 3

ok I have a math cross word puzzle and I have one answer left to finish it. the definition is a mathematical phrase containing numbers and operation. the word has 10 letters the 5th letter is e

2007-09-26 14:41:40 · 1 answers · asked by SherryBerry<3 2

Could anyone tell me anything I need to know about "e" when talking about derivitives. Such as: "e" derivitive, 2nd derivitive, and how its used in product and quotient rule

2007-09-26 14:41:31 · 2 answers · asked by GHAAD 4

Chemistry students analyzed the contents of rust. They found that it is made up of iron and oxygen. Tests on samples of rust gave this data.


Amt Of Rust (G)
50
100
135
150

Amt. Of Iron (G)
35.0
70.0
94.5
105.0

Amt. Of Oxygen (G)
15.0
30.0
40.5
45.0



A. Suppose the students analyze 400 grams of rust. How much iron and how much oxygen should they find?
Show Your work.

2007-09-26 14:38:48 · 4 answers · asked by Tammy 2

Ok, this is driving me crazy. We have the equation y = -2tan(x+(pi/4))

So, the asymptotes aren't stretched or anything, some are still like pi/2 and -pi/2, right?

Assuming I've got that right

The pi/4 shifts the asymptotes to the right, correct? But then what are they? (pi/2)+(pi/4)? Which for some reason I can't work out....3pi/4? Gah. Help, please?

Yes, this is homework, but I'm not begging for an answer, I'm just severely confused and would rather ask someone with enough time to be on here than my already-stressed friends.

2007-09-26 14:32:03 · 1 answers · asked by Anonymous

2007-09-26 14:29:38 · 4 answers · asked by kb9kahne9 2

There is a pole in a lake. 1/2 of the pole is under ground, 1/3 of the pole is in the water, and 8 ft is above ground. How long is the pole? Please show your work, I am trying to help out a neighbor kid that is totally lost.

2007-09-26 14:18:20 · 1 answers · asked by rustyrcfn 1

1) f(x) = 5x + 6

2) {(x,y) | 4x+ 3y = 9}

3) Show that x = y^2 is not a function. Do not give numerical ordered pairs.

Thanks.

2007-09-26 13:51:34 · 1 answers · asked by Anonymous

.........{ 0, 0 < t < 1
f(t) = {
.........{ 2t - 2, t > 1

Plz ignore the "......."s! Plus : the three " { "s should be just one big " { ".

Question : Find (Laplace transform of) : L{f(t)}

Please help - I have no idea even where to start here!
Thanks.

2007-09-26 13:50:58 · 3 answers · asked by Anonymous

4x^2-9

2007-09-26 13:41:45 · 7 answers · asked by jfourline6 1

describe the symmetry of y=sin x

2007-09-26 13:12:42 · 3 answers · asked by Anonymous

If you have

-cos^2 + -sin^2x

does it equal a

-1 ?

2007-09-26 13:03:52 · 3 answers · asked by Anonymous

This question is about alternating series. I understand that an alternating series converges if the limit tending to infinity is 0, and if the terms are decreasing throughout. If for a series, one of these tests for convergence fails and the alternating series test fails, what tests can you use to conclude that the series diverges? I'm thinking nth term, p-series, geometric series, but i'm not sure...please help =]. A sample question that I am working on is...

the series (-1)^n 3^(n-2) / 2^n with n from 1 to infinity
p.s. there is a multiplication between the n and the 3

2007-09-26 13:00:53 · 2 answers · asked by V 2

2007-09-26 12:57:13 · 7 answers · asked by Anonymous

2007-09-26 12:55:23 · 5 answers · asked by bilfaqi 2

discontinuous at 0

2007-09-26 12:48:34 · 2 answers · asked by Anonymous

d/5+2=3C-n/2? and what is 3.9w-2.2(3.6+2.7w) simplified?

2007-09-26 12:47:40 · 4 answers · asked by Magzilla 2

(6x – 1)(3x – 4)

2007-09-26 12:45:47 · 8 answers · asked by Ivyâ?¥ Left Myspace 1

f(x)= -5(5x+4)^2 when x=3

2007-09-26 12:43:28 · 1 answers · asked by jducksgolf 2

Two numbers are _______ if they have the same absolute value but different signs.

I forget what goes in the blank, does anyone know?

2007-09-26 12:41:58 · 4 answers · asked by Kait 3

2007-09-26 12:40:58 · 6 answers · asked by . 1

is 2^x odd even or neither?

2007-09-26 12:38:14 · 6 answers · asked by Anonymous

2007-09-26 12:36:32 · 3 answers · asked by . 1

As part of an exercise regimen, you walk 2 miles on an indoor track. Then you jog at twice your walking speed for another 2miles. If the total time spent walking and jogging is 1 hour, find the walking and jogging rates. PLEASE HELP!!!

2007-09-26 12:32:56 · 5 answers · asked by igrl88 2

solve for x (show work) I think the answers are 2 and -2

2007-09-26 12:31:59 · 2 answers · asked by Anonymous

The absolute value of a number is the distance between _________ and ________ on a number line.

I forget what goes in the 2 blanks, does anyone have a clue?

2007-09-26 12:30:12 · 1 answers · asked by Kait 3

An open box is made from a 10-cm by 20-cm piece of tin by cutting a square from each corner and folding up the edges. the area of the resulting base is 96cm^2. what is the length of the sides fo the squares?

2007-09-26 12:19:50 · 3 answers · asked by Anonymous

how many inches are in 1.5 meters?

2007-09-26 12:15:24 · 9 answers · asked by Brittany D 1