Mathematics - 14 November 2007

i wanna know the factored and vertex form but the way to get these forms would be more useful then the answer to what the factored form is

2007-11-14 15:55:20 · 7 answers · asked by chuck g 1

what is the derviative of ln[2x]
is it chain rule? 1/x(2x)2

2007-11-14 15:45:44 · 3 answers · asked by ineedhelpbadly 2

(root 2minusroot 3)divided by 2

((2-(3)^(1/2))^(1/2))/2

2007-11-14 15:44:29 · 5 answers · asked by arturo 3

1) -2( 3y-7)=56
2) 6(1-4w)= -18
3) 4(2+5)-8=36
4) 2(5-3v)+9v=28
5) 7-3(5t-10)=67
6)-9(6+u)-2u=-10
7) 13x +7 (-3x-1)--63
8)15-(4m-5)=32
9)-2(-7k+4)+9=-13
10)-5y-5(-6-2y)=0
11)3(1+4n)-2(5n-3)=25
12)-6(x-2)+4(3-6x)=-36
13)5(4+2x)-(8x -12)=68
14)-3(-4 -6y)+7(-y+5)=-8
15)8(2w-6)+4(-1-5w)=0


it is 2-step equations, distributive properties, and integers
I will do ANYTHING in the world if anyone did this for me. <3333

2007-11-14 15:44:12 · 8 answers · asked by Anonymous

Can someone show me how to solve this? I am just trying to check an answer to see if I have the right answer or where I might of made mistakes.

http://img.photobucket.com/albums/v60/simple_3/math2-1.jpg

2007-11-14 15:41:11 · 2 answers · asked by . 2

2007-11-14 15:35:40 · 6 answers · asked by bob joe bill 2

I saw a derivation here last week of f '(1/x) from f.p., but now I have lost it

2007-11-14 15:27:56 · 1 answers · asked by c0cky 5

At what point does the curve x=1-2(cos^2)t, y=(tant)(1-2(cos^2)t) cross itself? Find the equations of both tangents at that point.

2007-11-14 15:21:59 · 3 answers · asked by Anonymous

Convert √2e^(-π/4)i to rectangular

√2(cos(-π/4)+i sin(-π/4))

=√2((1/√2)+(-1/√2)i)

I understand that cos is not negative because -cos=cos, I don't understand why the cos and sin equations are converted to (1/√2) when sin and cos of pi/4 is (√2/2)???

thanks a lot for your help.

2007-11-14 15:19:27 · 1 answers · asked by Nate 6

Question : Sketch the region R and evaluate the double integral: (Area Integral) f(x,y) dA = (Area Integral) (x^2)*(y) dydx

Where (Area Integral) stands for the double integral and the bounds of the second written out integral is 0 (lower) to 1 (upper) for x, and (x)^(1/2) (lower) to 1 (upper) for y.

My difficulty is with trying to sketch this graph, how would I go about doing this?

2007-11-14 15:11:59 · 2 answers · asked by offycakes 1

Imagine someone has a collection of two different sized coins (for instance nickels and quaters, or 10 and 5 pence pieces) all kept together in the same bag. They spill the contents of the bag onto a table and observe the layout of the coins before them. They then try and analyse the layout of the coins to look for 'groups' of coins - i.e. those touching each other, in clusters, and if certain sized coins were to appear within these groups.

How could they analyse the spread of coins to determine if the smaller of the two coins is more likely to group than the larger, and vice versa. If the smaller coins were found to be more prominent within the 'groups' as opposed to individually within the layout, how could this be analysed?

What statistical methods could be deployed to show that the smaller coins are more likely to be found grouped than individually. Lets say there is no element of chance involved and that smaller coins are more likely to group. (Hope this makes sense)

2007-11-14 15:07:00 · 6 answers · asked by lazytramp789 6

Please Tell me the answers to these 8 problems !!
Ok , the directions are : Write the fractions as a percent .
------------------------------------------------------------------------
1.) 2 over 5
2.) 12 over 60
3.)13 over 50
4.) 8 over 16
5.) 31 over 50
6.) 8 over 40
7.) 21 over 75
8.) 180 over 200
------------------------------------
Please answer them correctly
Thank you.

2007-11-14 15:01:09 · 9 answers · asked by sarahxxnerd 1

Compare and contrast a perpendicular bisector and a median of a triangle.

Will award a best answer.

2007-11-14 15:01:06 · 1 answers · asked by Rick 2

-2 over -2 to the -3 power minus 3rd power, over-3 to the -2nd power

2007-11-14 15:00:22 · 2 answers · asked by ? 2

QUESTION: What is the average speed, in km / hr for a car that travels 22 km in 15 minutes.

Ok, this is pretty simple I think... I just converted 15 minutes to .25 hour and did 22 km / .25 hour and got 88 km / hr

Is this done correctly? x____x

2007-11-14 14:56:39 · 4 answers · asked by Anonymous

Solve for y
2x+9y= negative 36

for some reason I keep goofying up!

2007-11-14 14:49:10 · 8 answers · asked by Zeppelin333 5

Solve: 0.4(x-3)=0.04(3x + 40)

2007-11-14 14:39:16 · 7 answers · asked by ? 2

solve-(solving equations by factoring)

y^4-10y+9=0

2007-11-14 14:36:59 · 7 answers · asked by KBBALL20 4

an 8.5 x 11 inch sheet of paper is cut in half lengthwise, while an identical sheet of paper is torn in half widthwise. do the resulting half sheets have the same area, perimeter, or both?

2007-11-14 14:34:48 · 8 answers · asked by Anonymous

I found a challenge problem and I cannot solve it so help.
3,437,312 ÷ 128

2007-11-14 14:34:18 · 10 answers · asked by Anonymous

THANKS!!!!!!!!!!!!!!!!!!!!!!!!!!11

2007-11-14 14:32:24 · 4 answers · asked by razorbacks.fan 1

2007-11-14 14:31:49 · 13 answers · asked by Anonymous

Lim t-->0 (5^t-3^t)/t the answer is in the book, but how do I get it ln(5/3)?

2007-11-14 14:26:52 · 3 answers · asked by m_carl 1

i do not know what the hell this means

2007-11-14 14:23:59 · 5 answers · asked by Sarah M 1

2007-11-14 14:18:35 · 1 answers · asked by Tonie M 1

I've been trying to differentiate with my TI-89 but everytime i put something in it says "error: argument error". I borrowed my friend's Ti-89 and put in the exact same thing, the calculator gave me a derivative.
So i tested it again. I told it to "factor(x^2-9)" and it gave me the same thing "error: argument error"

What can i do to make it go back to giving me answers?!

2007-11-14 14:16:39 · 3 answers · asked by lunaa_madison 1

2007-11-14 14:12:25 · 10 answers · asked by Anonymous

1. 9x + 7 / 2 + 9x - 2 / 5 = -2/3
I came up with 73/179x.

2. (-4 - 9i)(-4 - 9i)
I came up with 16 - 81i^2

3. (r + 6)^2 = 13
I came up with r = -6 + sqrt 13 or r = -6 - sqrt 13

4. Absolute value of 3x - 4 >/equal to 8
I came up with x >/equal to 4/3

5. 10y = 7y + 6 + 2y
I came up with y = 6

How'd I do? If I screwed up, help would be appreciated!!!

2007-11-14 14:03:11 · 4 answers · asked by wrongnumber 1

I'm just looking for the derivative of arccos

arctan- 1/(1+x^2)
arcsin- 1/sqrt(1-x^2)

2007-11-14 14:01:22 · 4 answers · asked by Anonymous

the circumference of a circle and the perimeter of a square can intersect at a maximum of ? points

2007-11-14 14:00:25 · 2 answers · asked by Anonymous