Mathematics - 30 November 2007

2007-11-30 10:28:05 · 9 answers · asked by Anonymous

Please help me, I am so lost and confused:
I have to do polynomials

16m^3n^3 + 24m^2n^2 - 40mn^3 divided by 8mn^2

If you can help, please help!

2007-11-30 10:23:55 · 7 answers · asked by Miserydecepts 1

Assume G(X)=definite ∫ g(t)dt on the interval [a,x] is Riemann integrable on [a,b], then prove G(X) is well defined and prove or disprove G(X) is the antiderivative of g(t); i.e. prove the following statement: If g is continuous at x, then G ' (X) = g(x).

2007-11-30 10:17:53 · 2 answers · asked by Gabe 3

Find the antiderivative:

⌠
⌡ x^2(3x^3-9)^7 dx

2007-11-30 10:10:38 · 3 answers · asked by Rachel 1

I need to proove this arument valid using the rules of inference. I'm stuck, can someone help me? I don't have a keyboard with logic symbols, so I hope this makes sense.

1. ~(A dot B) triple bar ~C
2. (D v E) horeshoe C / E horseshoe A

2007-11-30 10:05:26 · 2 answers · asked by Elisheva 1

Okay so i have 2 problems which really dont make sense to me! Can someone please solve it and try to explain it to me!


1.) A cow is tethered by a 50-meter rope to a rectangular barn. The dimensions of the barn are 60 m X 30 m. The rope is fastened to a hook on the barn that is 10 meters from the corner on the longest side of the barn. Over exactly how much ground can the cow graze?


2.) The weather during my vacation was as follows…
•It was cloudy on 13 different days, but it was never cloudy for an entire day
•Cloudy mornings were followed by clear afternoons
•Cloudy afternoons were preceded by clear mornings
•There were 11 clear mornings and 12 clear afternoons in all
How long was my vacation?

PLEASE HELPP ME! Solve and explainn!!

2007-11-30 10:04:04 · 7 answers · asked by dee* 2

a hospital parking lot charges $3 for the firsr hour and 1.50 for each additional hour. a weekly pass costs $37 and allows unlimited parking for 7 days. if johnny vistis the hospital two and half hours each time, what in minimmum number of vists that would make it worthwhile for him to buy a pass.

2007-11-30 09:56:14 · 5 answers · asked by Anonymous

Let P be the tangent plane to the surface xyz=a^3 at the point (r,s,t). Find the Cartesian equation of P.
Let T be the tetrahedron (1/3*(area of base x height)) formed by the coordinate planes, x=0, y=0, z=0, and the tangent plane P.
Show that the volume of T is independent of the point (r,s,t).

2007-11-30 09:20:42 · 1 answers · asked by Bomboo jo 1

x+2y=-5
2x-y=4

2007-11-30 09:17:19 · 9 answers · asked by ihurtmyhand 4

whats the formula to figure out this problem

3,5,-5...

The first term is 3. Each even-numbered term is 2 more than the previous term and each odd-numbered term, after the first, is -1 times the previous term. For example, the second term is 3+2, and the third term is -1 * 5. What is the 55th term of the sequence?

2007-11-30 09:04:29 · 3 answers · asked by Carl C 1

2007-11-30 08:57:17 · 8 answers · asked by Anonymous

Subtract. Express in simplest form.

???

2007-11-30 08:52:41 · 3 answers · asked by Anonymous

Help please

2007-11-30 08:50:00 · 4 answers · asked by Anonymous

How do you divide a mixed fraction by a regular fraction???

2007-11-30 08:44:38 · 26 answers · asked by shopaholic099 1

Every year three students are nominated to be “Student of the Year.” After a review process, 10 teachers must rank each student first, second or third place (no ties), with each first-place vote worth three points, each second-place vote worth two points, and each third-place vote worth one point.
Under these conditions, what is the smallest number of first-place votes that it would take to ensure that a student would win the Student of the Year? What is the smallest number of first-place votes a student could receive and still win the Student of the Year?
Please show work and procedure.

2007-11-30 08:41:02 · 4 answers · asked by Anonymous

2007-11-30 08:21:22 · 1 answers · asked by Alexander 6

are possible?

2007-11-30 08:20:28 · 2 answers · asked by DuckyWucky 3

For sum(Cn*x^n)

I'm supposed to enter in c3-c7
I already know that c4 and c6 are 0 because the derivative is something*sin(0)=0

but for the odd numbered c's I am having problems...
i know that the taylor series for sinx = sum( (-1^n) * x^(2n+1) )/ (2n+1)!
so i just substituted in 5x and multiplied by 5x^2 and got
5sum( (-1^n) * ( 5^(2n+1) * x^(2n+3) ) / (2n+1)!

so for c3 i got 5(-1^3)(5^7)/(7)! = -5^8/7!
but I am not getting the answer right for this. Can someone please explain what I am doing wrong.

2007-11-30 08:17:11 · 4 answers · asked by mula 2

Can someone help me on simplifying the square root of 2x/3. I think its 3 times the sqrt x over 2. But i really think Im wrong on this one

2007-11-30 08:07:47 · 4 answers · asked by ~*~ victoria ~*~ 1

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34567890123456789012
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56789012345678901234
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78901234567890123456
89012345678901234567
90123456789012345678
01234567890123456789
12345678901234567890
23456789012345678901
34567890123456789012
45678901234567890123
56789012345678901234
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78901234567890123456
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90123456789012345678

2007-11-30 08:02:01 · 9 answers · asked by Alexander 6

The value of z is calculated from the following formula:
z=(12a+5b)/(11a+19b)

a is increased by 2.2%
b is increased by 1.2% of a
Using partial differentiation, find an expression for the percentage change in z in terms of a and b.
b is measured as 11.
What non-zero value of a would result in a zero percentage change in z?

2007-11-30 07:56:10 · 3 answers · asked by ozi 1

Evaluate the function at the specified value f(x)= -x^3+5x^2-7x-8



A. find f(-3)
b. find f(0)
c. find f(2)

2007-11-30 07:37:49 · 9 answers · asked by Anonymous

(5/8)/(15/16)

2007-11-30 07:33:39 · 8 answers · asked by Jayden K 1

2007-11-30 07:29:46 · 13 answers · asked by lockkd_ll 1

What is the formula that will solve for
1+2+3+4+5+ . . . etc to any number? Explain.

2007-11-30 07:29:39 · 12 answers · asked by bbmm 4

A. 24
B. - 24
C. 12
D. - 12

2007-11-30 07:26:47 · 5 answers · asked by Anonymous

A. 12
B. 27
C. 3
D. - 3

2007-11-30 07:12:17 · 15 answers · asked by Anonymous

{-7x + y = -8
{-8x - 4y = -4

a. (-1, 1)
b. (2, -2)
c. (1, -1)
d. no solution

2007-11-30 07:08:24 · 7 answers · asked by . 1

A. - 9a + 5b + 6
B. 9a + 5b + 6
C. 9a - 5b + 6

2007-11-30 07:04:24 · 9 answers · asked by *:)* 1

2007-11-30 07:00:16 · 9 answers · asked by *:)* 1