Mathematics - 27 August 2007

2007-08-27 23:19:53 · 4 answers · asked by Bhaskar 4

(x^2/3 - 4x + 12 - 20) dx


thanks!!

2007-08-27 23:04:53 · 3 answers · asked by DramaQueen22 3

"A car radiator contains 10 liters of a 30% antifreeze solution. How many liters will have to be replaced with pure antifreeze if the resulting solution is to be 50% antifreeze?"

I am completely lost on this one, and any help would be appreciated. If you can only give me the formulas/equations, that would be great too (: Thanks!

2007-08-27 22:52:46 · 7 answers · asked by alwaysconfused 2

when you have 3 systems.. for ex
x + 2y +3z =5
2x - y + 2z = 7
3x - 3y + 2z = 10

ok and they say "find the coordinates of the point of intersection of the planes"

that just means you have to solve for x y z right ? and each value is a coordinate of intersection ? right? im not sure.

so if im right. and lets say X was = to 2, then one coordinate would be {2, 0, 0} right? i dont know

thanks

2007-08-27 22:33:58 · 2 answers · asked by john doe 2

2007-08-27 21:55:44 · 7 answers · asked by eastaweng 1

Greyhound Bus Company has 150 buses in their garage.
124 has backdoors, 120 has tinted windows, and 127 has toilets. 111 has backdoorss and tinted windows, 110 has toilets and tinted windows, 14 has all three, and 15 has neither.

2007-08-27 21:51:52 · 4 answers · asked by Anonymous

"A 2 digit number has its 'tens' number 5 more than 2 times the 'ones/units' number. The number is 1 less than 9 times the sum of it its digits.
Write an equation for this and solve it"

This was a question from one of my maths tests. I was so lost. Can anyone help?

2007-08-27 21:16:19 · 5 answers · asked by Anonymous

x^2*e^x*dx

2007-08-27 21:11:36 · 3 answers · asked by diana 1

value for the first of the two numbers?

2007-08-27 21:11:25 · 14 answers · asked by lala haha gaga mama 2

1/(x ln x)*dx

2007-08-27 21:08:46 · 3 answers · asked by Anonymous

need in simplist form with no negatives

2007-08-27 21:03:34 · 3 answers · asked by Zaq1 2

Question:

Cain and Abel buy a business together. Cain invests $45 000 and Abel invests $30 000. If their first annual is $90 000 and is to be split in the same ratio as their investments, how much should they each receive?

2007-08-27 20:57:20 · 4 answers · asked by ebneter_chick 1

2007-08-27 20:52:55 · 2 answers · asked by broken_egg80 1

find intensity of light coming out

2007-08-27 20:41:30 · 1 answers · asked by Anonymous

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

2007-08-27 20:41:14 · 5 answers · asked by justme 4

Please help!

2007-08-27 20:39:17 · 7 answers · asked by justme 4

No irrational numbers please. Just simplify it as much as you can with the radicals!

2007-08-27 20:38:11 · 6 answers · asked by justme 4

Please help.

2007-08-27 20:36:07 · 3 answers · asked by justme 4

xe^(x^2)*dx

2007-08-27 20:29:18 · 2 answers · asked by diana 1

I havent done this in forever and its killing me that I dont remember.

Say you have an equation -3y=5x+6
When you divide the 5 and 6 by 3...would you leave the 3 negative or make it positive??

Thanks!!

2007-08-27 20:24:33 · 10 answers · asked by babeegurl494 2

A) 4 or more errors
B) no errors

2007-08-27 20:21:59 · 2 answers · asked by Anonymous

2007-08-27 19:58:07 · 2 answers · asked by bebexcyc 1

I know that the answer is = 3p but how do you get the answer!?!?

2007-08-27 19:55:03 · 5 answers · asked by Zaq1 2

I'm kinda stuck...wait I take that back I'm really stuck!

The question is

A skyrocket is fired vertically upwards. Its height after [t] is
s[t] = 60t - 5t^2

[s] is measured in metres and [t] is measured in seconds.

Find the maximum height of the skyrocket.

2007-08-27 19:42:19 · 7 answers · asked by DramaQueen22 3

Show that the distance between the parallel planes ax +by+cz=d1 and ax +by+cz=d2 is D= (the length of d1-d2)/ sqrt(a^2 +b^2 +c^2)

2007-08-27 19:30:08 · 2 answers · asked by Anonymous

I'm not sure if i did it correctly so i need somebody to solve it =]
a+7< 22

2007-08-27 19:28:56 · 8 answers · asked by Whatever! 2

Find an equation of the plane that passes through the line of intersection of the planes x-z=1 and y+2z=3 and is perpendicular to the plane x+ y-2z=1...

2007-08-27 19:27:01 · 2 answers · asked by Anonymous

a x (b x c)= (a * c)b - (a * b)c

where * means the dot product

2007-08-27 19:21:08 · 2 answers · asked by Anonymous

2007-08-27 19:17:12 · 7 answers · asked by Anonymous

I need help finding the y-intercepts, and the vertexs.

1) find the vertex and the y-intercept.
y=2x²+4x+2

2) find the vertex and the y-intercept.
y=-3x²+12x-9

How do you find it? Show/work explain please.
3)
For the 1) I got 2(x²+2x+1) is y=2(x+1)²+1 for the vertex. Which is (1,-1) but its wrong why?

2007-08-27 19:14:08 · 4 answers · asked by Anonymous