Mathematics - 12 December 2007

Is there a website that helps taking off 20% or so Off stuff for math terms?

2007-12-12 23:50:43 · 13 answers · asked by William S 1

it is by mathematical induction.

2007-12-12 23:36:16 · 3 answers · asked by patricia r 1

Please prove using Math induction...

2007-12-12 23:28:36 · 3 answers · asked by gorgeous 1

2007-12-12 23:11:56 · 4 answers · asked by Anonymous

The volume of a cone is V = 1/3(pir^2(h)). If the height is twice the radius, express the volume V as a function of r.

Also, is there an easier way to say
"express the volume V as a function of r" in English?

2007-12-12 23:02:59 · 6 answers · asked by journey 1

anyone know any good expressions with numbers in them?

2007-12-12 22:52:57 · 3 answers · asked by Anonymous

I hae to write each fraction as a decimal than show a bar to represent a repeating decimal.

2007-12-12 21:42:41 · 21 answers · asked by ♥Ebonique♥ 2

the entire term (9-x^2) is under the root sign

2007-12-12 21:34:34 · 2 answers · asked by ksh_great 1

2007-12-12 21:12:56 · 2 answers · asked by David Junior 3

#1
Find c that makes
x^2 - 8x + c
a perfect square trimonial, then write as binomial

#2 solve by completing square
x^2 - 12x + 4=0

#3 complete square
2x^2 + 8x -1=0

2007-12-12 19:54:54 · 2 answers · asked by Anonymous

please!

#1
(8 - i) - (3+2i) + (-4 + 6i) write in standard form
answer?

#2
(2-3i)(-1+4i)

#3
3+2i/2+i

#4 find absolute value of 4+2i, 8i, and -3 + 7i.
which is farthest from origin?

2007-12-12 19:37:24 · 3 answers · asked by Anonymous

2007-12-12 18:44:04 · 6 answers · asked by kleague9921 1

Lets pretend the mean weight of a cat is 10 stone (I know, its a pretty heavy cat haha) with a standard deviation of 1.5 stone. The mean weight of a dog is 8 stone with a standard deviation of 1.2 stone.

If I took one cat and one dog and put them in a box, how can I find the standard deviation of the difference in weight? How can I find what percent of dogs weigh more than cats?

2007-12-12 18:16:08 · 3 answers · asked by PikaPika 3

Triangle ABD’s BD is an opposite, AB is adjacent, AD is hypotenuse & angle ABD is 90 degree & AB = 6 cm. But in the line AD has point C & angle BCD is 90 degree. Show that CD = 6 (sec theta – cos theta).

How can I show this?

2007-12-12 18:12:04 · 3 answers · asked by f_line 1

How do you solve (3/5)^x = 7^(1-x)?

2007-12-12 17:46:37 · 3 answers · asked by Hala 2

2007-12-12 17:22:59 · 1 answers · asked by Anonymous

2007-12-12 17:16:46 · 3 answers · asked by Ayuen m 1

If the weight of something increases from 15 grams to 21 grams.

Can someone explain as simply as possible how to calculate the percentage increase?

Cheeres

2007-12-12 17:15:19 · 11 answers · asked by Chimera's Song 6

(a) 9/2 (b) –2/9 (c) 2/9 (d) ∞

2007-12-12 16:58:13 · 2 answers · asked by tony2007 2

y = x^3 - 15x^2 + 27x where -1<=x <= 2, now find the absolute minimum of this function.

2007-12-12 16:56:21 · 5 answers · asked by ? 1

A: 1 1/2
B: 1.17
C: 1.25
D: 1.27

2007-12-12 16:50:47 · 5 answers · asked by acuraboy1978 2

Find the volume of the solid bounded by the paraboloids z = 3x^2 + 3y^2 and z = 4 - x^2 - y^2.

2007-12-12 16:43:30 · 1 answers · asked by celes 1

I'm doing some homework for Algebra II and need help with this one problem!
Please help!

14. Solve the system of equations.


2r+ 6s+ 4t=16
r+3s+2t=8
-5r+2s-3t=1

2007-12-12 16:28:30 · 6 answers · asked by upsetness 2

could you tell me if this is correct. Are all the steps here for this problem ?

2x^2+4(3x-x^2)+3x

2x^2 + 12x - 4x^2 + 3x

-2x^2 + 15x

Did I leave out any steps

2007-12-12 16:20:15 · 10 answers · asked by Maggie L 1

i just need the answer

2007-12-12 16:17:09 · 10 answers · asked by Anonymous

2007-12-12 16:03:13 · 7 answers · asked by Anonymous

2007-12-12 15:58:46 · 5 answers · asked by Anonymous

The interval [0,5] is partitioned into n equal subintervals, and a number, xi is arbitrarily chosen in the i^th subinterval for each i. Then lim n
n--> infinity ∑
i=1 (6xi-3)/n

2007-12-12 15:15:45 · 2 answers · asked by sporty 1

how would you do (3/2)^ -3
basicly 3 over 2 in parenthesees to the negative 3rd power
10 points to the first correct ansere

2007-12-12 15:08:03 · 4 answers · asked by Anonymous

4m-4=4m
square both sides
(4m-4)^2=(4m)^2
16m^2-32m+16=16m^2
subtract 16m^2 from both sides
-32m+16=0
-32m=-16
m=1/2

2007-12-12 14:54:42 · 9 answers · asked by Anonymous