Mathematics - 5 August 2007

Estimate :
∫ x^(1/3) dx (integral has limits : 0.5 at bottom and 1.0 at top (of integral sign))
using
(a) Trapezium rule
(b) Composite Trapezium Rule
(c) Which estimate is better?

2007-08-05 22:38:10 · 2 answers · asked by David C 1

2007-08-05 21:38:08 · 6 answers · asked by Carla Y 2

a fair (unbaised) coin is to be tossed 3 times. On each of the first 2 tosses the result is a head. What is the probability that the coin will land "heads" on the third toss?

2007-08-05 21:28:50 · 9 answers · asked by Anonymous

The sum of the digits of 2 digit # is 12. If the units is 2 more than the tens digit. Find the numbers...

Please explain completely...

2007-08-05 21:17:14 · 3 answers · asked by danix 1

"I just want to know how much it is when I purchase my new home"

2007-08-05 21:15:38 · 12 answers · asked by robert r 1

surface areas and volume

1. find the surface area of the following solids
a. a cube with 10cm wide, 8cm depth, 4cm width

2007-08-05 21:15:22 · 5 answers · asked by Chopped & Screwed 1

da sum of a 2digt # is 11.If da ordr of da dgts s rversed,da rsulting # excds da orig. # by 45.Find da orig. #

guys please answer this question im suffering from headache
=( whoever shows the complete steps will be given 10 stars=)
and we'll be friends=o....


tnx guys...

2007-08-05 20:55:26 · 2 answers · asked by danix 1

On a tv game show there are 9 squares. Behind 3 of the squares there is a cash amount to be won. Behind every other square there is a prize. 2 of the squares have already been turned over, one prize and one cash. What is the probability of turning over a cash amount next?

2007-08-05 20:43:34 · 4 answers · asked by chavolf 1

The indefinate integral (or anti derivitave) of

x^4 Sqrt[5 + x^5] dx

Thanks alot for any help

2007-08-05 20:40:43 · 5 answers · asked by hurcut 1

I need to find the indefinite integral of
[Sin(x) / Cos^8 (x) ] dx

2007-08-05 20:28:24 · 5 answers · asked by dylancougar 2

On a balancer, there are 3 x and 5 y on one side. Using simultaneous equations, how do we find z in order for it to be balanced?

2007-08-05 20:07:41 · 4 answers · asked by Anonymous

Well this is a question for maths and I need help. We are allowed to help others. IF you can help me get the answer, I need to know how you got it! Thank you!

2007-08-05 20:04:55 · 3 answers · asked by panda1234 2

plz explain

2007-08-05 19:43:33 · 12 answers · asked by Lolla 2

Please explain why, I just can't picture it.

Also, what is really the difference between let's say, sin of infinity, and the limit as x approaches infinity of sin (x)

2007-08-05 19:11:44 · 4 answers · asked by Anonymous

ex 2.56+ 3.25+4.5 if I hide the decimal it will give you 3+3+5 but when you add in excel it give the sum of hiden decimals. please let me know the formula for round up integers

2007-08-05 19:08:15 · 2 answers · asked by nmh1947 1

Verify that the equation is an identity . Please show me the steps.
( 1+ cos x / 1-cos x) - ( 1 - cos x / 1+ cos x) = 4 cot x csc x


find the exact value of sin ( A + B)
* sin A = 3/5 and cos A is negative
* sin B = 8/17 and tan B is negative

2007-08-05 19:06:42 · 4 answers · asked by bettylee 1

also explain....because, when I look at the graph, it looks like its going to 2 or somthing, but I heard it may go to infinity. The graph doesn't do justice.

2007-08-05 18:57:41 · 3 answers · asked by Anonymous

2007-08-05 18:56:10 · 8 answers · asked by vidyacksp 1

[(x^(2)y^(-3) over x^(-4)y^(-5))]^(1/2)

2007-08-05 18:48:04 · 4 answers · asked by Anonymous

i need to find the equations of all lines of asymptote for these equations but i don't know how
can someone please check my answers for these?

a. y = 3* (2^x) - 1 y = -1

b. y = 2 / (3+x) x = -3

c. y = (2x-1) / (x) x = 0

d. y = (3x+1000) / (x-5) x = 5

e. y = 2* [(3/4)^x] + 2 y = 2

2007-08-05 18:47:43 · 2 answers · asked by Anonymous

[(y^(-2) over y^(-3)]^(2/3)

2007-08-05 18:46:12 · 2 answers · asked by Anonymous

a solution?

Stupid question, but I can't really think of why.

2007-08-05 18:40:49 · 4 answers · asked by JoeSchmo5819 4

(a) x² + 2x + 3 = 0
(b) 5x² - 4x - 2 = 0
(c) 2x² + 7x + 2 = 0
(d) 4x² = 5x - 21
(e) 2x² + 5x - 3 = 0
(f) 3x² + 8x + 2 = 0
(g) 7x² - 28x + 15 = 0
(h) 5x² + 12x + 3 = 0
(i) 2x² 3x - 4 = 0
(j) x² - 12x + 36 = 0

Show your working as done in exam format.

2007-08-05 18:09:21 · 2 answers · asked by Anonymous

1)r=(12)/(3+4 cos theta)
2) r=(23)/(7-5sin theta)

a) its directrix is vertical or hortizontal? why?
b) its directrix is above the pole, below the poler, to the right of the pole, to the left of the pole? why?

2007-08-05 18:06:29 · 1 answers · asked by ilovecoach 3

2007-08-05 17:16:15 · 6 answers · asked by Anonymous

im going into 10 th grade next year so i have to take geometry im just debating whether i should change to challenge geometry....
see i need to have have more challenge classes i just dont know which challenge classes to take.
last year i took algebra and i was awful at it i was lucky to pass with a c+ at the end of the year..... but people say geometry is much easier than algebra so im not sure if i should change classes or not


any advice would be much appreciated

2007-08-05 16:54:38 · 7 answers · asked by amanda marie 3

Is y=[(x^2)-2x-3]/x-3 a function? Please give its domain, range, axis of symmetry, and shape of graph, if it is so.

thank you

2007-08-05 16:40:03 · 4 answers · asked by rock-onz 1

Please find the general equations of the perpendicular lines, one with slope of -3, both passing through the center of circle with radius 4.

Thank you

2007-08-05 16:36:47 · 3 answers · asked by rock-onz 1

The electricity costs of a business decreased from $12,000 one year to $10,920 the next. What is the rate fo decreased?

2007-08-05 16:35:09 · 4 answers · asked by moni 1

ok.. it says i need to put it into the ax^2+bx+c=o form ..

the problem is .. 49x^2=64

so i wrote ... 49x^2-64=o

now what do i do, bc only 7 goes into 49 evenly, and 8 into 64..but not both ??

2007-08-05 16:33:29 · 6 answers · asked by CHICKENBUTT 1