Mathematics - 29 October 2007

5x^2+12x-9

I just need help understanding how you use the middle and the signs...

2007-10-29 04:21:53 · 7 answers · asked by It's a girl due 5/11/09 4

to x or y, then find the area of the region.

i have no idea how to even start this problem if you could explain thatd be great! thanks!

2007-10-29 04:20:35 · 2 answers · asked by Anonymous

please show steps can't seem to figure this out

(6a^12y^5)(2ay^10)

2007-10-29 04:11:10 · 3 answers · asked by Anonymous

Please help answer...

3x^2+20x+17

factor completely...

2007-10-29 04:09:55 · 6 answers · asked by It's a girl due 5/11/09 4

2007-10-29 04:05:02 · 8 answers · asked by niceguy 2

Louise sold some chickens on the internet for £94.50
She calculated that she made a profit of 26% on the cost price of the chickens.
However, when doing her calculation she forgot that she spent £3.50 on the postage for the chickens.
Work out her correct percentage profit.

2007-10-29 04:02:37 · 2 answers · asked by jimquan 1

If a rock falls from a height of 20 meters on the planet Jupiter, then its height (H) after T (t= seconds) is approx:

H(t)= 20-13t^2

What is the average velocity of the rock from t=0 to t=1
What is the instantaneous velocity at time t=1
What is the acceleration of the rock?
When does the rock hit the ground?

I have no idea when the damn rock hits the ground! lol. something to do with the acceleraion of gravity.

2007-10-29 03:51:56 · 8 answers · asked by girlygirl 1

How do you figure out the square footage of something.
If you have a 1/4" x 48" x 10' slab - how may square feet is it?

2007-10-29 03:47:59 · 7 answers · asked by kimmer727 5

Carry out the following steps to sketch the graph of
f(x) = x / (1 + x^2) :
(a) Find the local maxima and minima of f. Compute the local maximum and minimum values. Give the intervals of increase and decrease.
(b) Find the infection points of f. Give the intervals where f is concave upward and
where f is concave downward.
(c) Determine if f is even or odd.
(d) Find lim as x approaches infinity of f(x) and lim as x approaches infinity of f(x).
(e) Make a careful sketch of the graph of f that reflects the above information.

2007-10-29 03:37:33 · 1 answers · asked by bradm_127 1

My dog is 59 days pregnant and we have a digital thermometer that is currently reading 38.6 celsious, it has gone up and down since yesterday and i'd just to know what is 38.6 c in farenheit? Also what temperature reading is 98 - 100 degrees Farenheit if you convert it to celsious?

Thanks in advance!

2007-10-29 03:32:47 · 4 answers · asked by Anonymous

Simplify the expression:

(4 + sqrt2)^2

Thanks for all of your help.

2007-10-29 02:53:59 · 5 answers · asked by lexismom2005 1

(a + 3)/(a^2 - 9) / (4a + 12)/(5a - 15)

Write the answer in lowest terms.

Thank you

2007-10-29 02:48:53 · 2 answers · asked by Pete 1

what is the remainder when 123456...95969798100 is devided by 32??

option:
a) 0
b) 16
c) 8
d) None of these.

2007-10-29 02:29:49 · 11 answers · asked by useretia 2

Find the Cartesian equation for the curve with the polar equation r = 2 cos x

can someone explain how to find it?

2007-10-29 01:49:09 · 4 answers · asked by VickiGirl 6

set up, but do not evaluate, an integral that represents the
length of the curve
x=e^t +e^-t, y=5-2t, 0 less than or equal to t less than or equal to 3

2007-10-29 01:32:14 · 2 answers · asked by Trung T 1

find the area of the region enclosed by the astroid x=acos^3 theta,
y=asin^3 theta

2007-10-29 01:31:38 · 3 answers · asked by Trung T 1

find the taylor polynomial Tsubn (x) for the function f at the number a.
f(x)= square root of quantity (3+x^2), a=1, n=2

my teacher said to compute the taylor polynomial. i'm not sure what that means

2007-10-29 01:29:11 · 2 answers · asked by Trung T 1

find the taylor polynomial Tsubn (x) for the function f at the number a.
f(x)= xe^-2x, a=0, n=3

my teacher said to compute the taylor polynomial. i'm not sure what that means

2007-10-29 01:28:13 · 2 answers · asked by Trung T 1

Find the percent of each number mentally

1)75% of 64

2)25% of 52

3)33 1/3% of 27

4)90% of 80

2007-10-29 01:26:30 · 2 answers · asked by haaaaahaaaa! 1

really stuck on this- not even my maths teacher could help! Is it to do with the sum to infinity of an arithmetic or geometric series?

2007-10-29 00:26:11 · 3 answers · asked by Hannah D 1

in the book the << was much closer together and it was used 'where e^y << 1 '. Help!

2007-10-29 00:23:39 · 5 answers · asked by Hannah D 1