Mathematics - 9 September 2007

The length of a rectangle is fixed at 25cm. What widths will make the perimeter greater than 90cm?

2007-09-09 10:17:29 · 2 answers · asked by Jack M 1

Comed charges $40 for a phone and $30 a month for its economy plan/ The equation c= 30t +40 describes the total cost, c, of operating a comed phone for t months.

What is the total amount for two months of service?


If a customer has only $110 available how many months of service can he recieve?

2007-09-09 10:16:07 · 9 answers · asked by Jack M 1

Find the lesser of 2 consecutive integers with a sum greater than 16

2007-09-09 09:59:39 · 5 answers · asked by Caitlin 2

can anyone name all the numbers with even factors from 1-200 pls

2007-09-09 09:54:12 · 3 answers · asked by billy j 1

Graph a line through origin that is parallel to x+y=10

2007-09-09 09:51:25 · 2 answers · asked by hintzruby 1

Find the center (h,k) and radius (r) of the circle. Also, find the intercept.

2(x-3)^2 + 2y^2 = 8

I'm able to answer this question if it didn't have 2(x-3)^2 in it.

Help?

2007-09-09 09:49:34 · 1 answers · asked by labelapark 6

cotan(in trigonomatry)
cotan=b/a
I have this calculator
http://www.zibi.pl/grafiki/produkty/FX-82MS-_455.jpg

2007-09-09 09:43:47 · 2 answers · asked by Anonymous

6^-9 * 6

simplify this...

I feel like a moron with the simple things these days... someone please help me out! thanks!

2007-09-09 09:38:53 · 7 answers · asked by Doodlebug 4

2007-09-09 09:37:39 · 5 answers · asked by Anonymous

Describe the pattern in this sequence:

200, 202, 206, 212

Now I know that you add the first number with 2, and then the second with 4 and the third with 6, which is adding them with even numbers but I just can figure out how to describe it!!! Its driving me insane! Please help! Thanks!

2007-09-09 09:31:23 · 4 answers · asked by Anonymous

3(1 - d) = 2 - (2d + 4)
Answer: d= -3

4(2s+1) - 5 = 6s
Answer: s= 1/2 or 0.5

3(q + 2) + q = 2q + 5
Answer: q= -1/2 or -0.5

Are they correct?

2007-09-09 09:29:29 · 3 answers · asked by Agata 5

2007-09-09 09:25:12 · 6 answers · asked by M. E 2

Equal amounts are invested at 6%, 7%, and 8% annual interest. If the three investments yield a total of $2,037 annual interest, find the total investment.

Please help me, I don't know how to begin. I would really appreciate it.

2007-09-09 09:24:26 · 2 answers · asked by Anonymous

2007-09-09 09:21:30 · 1 answers · asked by Anonymous

2x - y + 3z = 2
3x + 2y - 4z = 5
x - 4y + z = -10

2007-09-09 09:19:15 · 4 answers · asked by Anonymous

I really need help with these. How would I do...

Given polynomial and one factor, find remaining factors

(x-2) is the factor

4x^3 - 17x^2 + 9x + 18

and now in the other one im given one zero and i need to find them all

the zero is (1)

p(x)= x^3 + 2x^2 - 13x + 10

2007-09-09 09:16:07 · 1 answers · asked by hidetherumm 2

Here's the problem: At a sports training camp, participants run three miles a day. Before running, they record their resting heart rate. After running, they record their time, heart rate, and describe how they feel about their time. Which of the follwing is not a quantitative variable?
1. resting heart rate
2. time
3. heart rate after running
4. how they feel about their running time

Thanks in advanced to anybody who answers me, best answer gets 10 points

2007-09-09 09:10:29 · 4 answers · asked by Anonymous

simplify square root 162

2007-09-09 09:08:39 · 4 answers · asked by confused 4

Find the height of a triangle with area of 81 square meters and a base of 9m.

2007-09-09 09:01:14 · 5 answers · asked by zerokun4 1

What formula do you use?

2007-09-09 08:55:13 · 2 answers · asked by c_eva02 2

45X72X132
I got: 427,680 so is the answer "430 X 10^3"?

2007-09-09 08:54:09 · 8 answers · asked by Anonymous

If 2ax - 5x = 2, then x is equivalent to...

[1] (2 + 5a)/2a
[2] 1/(a - 5)
[3] 2(2a - 5)
[4] 7 - 2a

An answer with an explanation would be much appreciated. Thanks! :)

2007-09-09 08:51:09 · 2 answers · asked by Anonymous

I am working on a problem that requires me to integrate x+1/x^2+1. I've used a CAS to find a solution: 1/2ln(x^2+1)+arctan(x), but I would like to know how to get to that answer.

Could anyone explain to me how to find an antiderivative for this problem?

2007-09-09 08:46:41 · 2 answers · asked by Anonymous

2007-09-09 08:45:32 · 2 answers · asked by ? 1

Graph a line through (-2, 2) that is parallel to a line whose slope is -1?

I know how to graph, but I'm not sure on how to do the math.

2007-09-09 08:42:56 · 1 answers · asked by hintzruby 1

integrate: sin(x^(1/3))dx

thx

2007-09-09 08:25:34 · 1 answers · asked by the man 2

2007-09-09 08:24:31 · 3 answers · asked by monica n 1

karma's age is 2 years less than three eighths of her father's age. If Karma is 13 years old, how old is her father?

2007-09-09 08:23:19 · 6 answers · asked by monica n 1

2007-09-09 08:17:48 · 7 answers · asked by monica n 1

2007-09-09 08:17:36 · 4 answers · asked by maria 1