Mathematics - 13 October 2007

2007-10-13 23:32:19 · 17 answers · asked by Anonymous

Here is the question:

P.S. (i can't get the degree sign on my keyboard)

" Two angles of a triangle are 54degees and 72degrees. Find the ratio of the size of the third angle to the sum of the first two. "

I just don't know what it wants

2007-10-13 23:29:58 · 7 answers · asked by Me 3

People who say that nothing is impossible fail to understand maths. In maths 4 is not equal to 5 and there is no way you can prove that.

So basically there are things that are not possible. Can you think of some such things?

2007-10-13 22:23:10 · 10 answers · asked by Anonymous

A surveyor walking on a level ground at 10 Kph in the eastward direction sighted the top of a tall narra tree in the direction N12degreeE. After 30 mins the same tree now bears N48degreesE. How far was the surveyor from the tree during the first sight?

2007-10-13 22:19:58 · 3 answers · asked by delixir_21 1

2007-10-13 22:18:46 · 3 answers · asked by Mark Z 1

A pole tilts toward the sun and it has an angle of 8 degrees from the vertical and it casts a 22 foot shadow. THe angle of elevation from the tip of the shadow to the top of the pole is 43 degrees. How long is the pole?

2007-10-13 22:15:30 · 3 answers · asked by delixir_21 1

any prayers that are related to math

2007-10-13 21:52:43 · 1 answers · asked by Anonymous

its one of these things i found on numerous IQ sites as well as in a few brain teasers. An example is given below. I would appreciate it if you could explain what the answer is and how you came to a conclusion. Cheers!
.
Ten people can paint 60 houses in 120 days, so five people can paint 30 houses in:

2007-10-13 21:01:07 · 9 answers · asked by Anonymous

Use the ratio test to decide if the series converges or diverges.

Let L be the limit obtained when applying the ratio test. Determine the value of L.

1) Infinity(Sigma),n=0 ((n^3)+1)/(2^n)
2) Infinity(Sigma),n=1 (2n)!/((n!)(n+3)!)
3) Infinity(Sigma),n=2 (3)/sqrt(n)

Does these series:
A) Converge
B) Diverge
C) The ratio test does not tell us anyhting about the convergence of the series.

2007-10-13 20:40:47 · 1 answers · asked by Victor 1

we have a circle with the radius of 3.15 cm and an unknown triangle. using the circle, find the dimension of the smallest possible triangle that would fit the circle.

2007-10-13 20:06:53 · 1 answers · asked by Anonymous

find y' of y*sqrt(x-1) + x*sqrt(y-1) = xy

Please Explain Steps.

2007-10-13 19:25:45 · 5 answers · asked by Pedro Q 3

a polynomial function has the equation
P(x)=(x+2)^2(x+5)(3-x)

THis is the question...
i drew the graph using a graphing calc but its wierd but it's not wrong... The polynomial if i'm correct has a positive leading coefficient... so why does the right side of the function point down instead of up???


i always thought that the arrow would only point downward on the right half IF it has a negative up front like for example...

P(x)=-(x+1)(x-2)(x-3)


can someone tell me plzz. newbie on this stuff and this stuff is suppose to build on too..

2007-10-13 19:04:47 · 8 answers · asked by Anonymous

2007-10-13 19:02:36 · 24 answers · asked by Anonymous

Noting that a full house is 3 of one card and 2 of another.

2007-10-13 18:58:21 · 4 answers · asked by Psychseed 1

which side have negative slope, and what are the slopes??

2007-10-13 18:56:14 · 5 answers · asked by Anonymous

Please help! i fill like my brain is going to come out of my brain! i dont know how to solve this i keep trying but i cant!
The center and radius of circumference M are (0,0) and 10, respectively. The center and radius of circumference P are (8,2) and 2, respectively. Circumference Q is internally tangent to circumference M and externally tangent to circumference P.Of course that there are infinitely many circumferences Q which have this property. Determine and graph the equation of the curve that contains the centers of all the circumferences of the Q kind.

2007-10-13 17:18:45 · 2 answers · asked by mshb30 2

Is the productt of two imaginary numbers always an imaginary number? Justify your answer.

2007-10-13 17:11:00 · 0 answers · asked by mlsz28 1

how do you prove that sin^2 (x) + cos^2(x) = 1 ? no matter what the value of "x" is???
please give an example

2007-10-13 16:55:50 · 9 answers · asked by starz8 2

how do you prove that sin^2 (x) + cos^2(x) = 1 ?
please give an example

2007-10-13 16:54:19 · 6 answers · asked by starz8 2

If the average of 4 and x is equal to the average of 2, 8, and x, what is the value of x?

2007-10-13 16:52:35 · 9 answers · asked by Lizzie 1

2007-10-13 16:51:52 · 19 answers · asked by Mr. Dog 4

im having trouble with some work can any one help??

2007-10-13 16:50:58 · 10 answers · asked by kimmiiiii 1

I don't understand how you remove the X's in a sum...
19+8+13+x+13-x+28-x+8-x=77
89-2x = 77
-2x = 77-89
-2x = -12
x = 6

how did you get the 2x?

and this one:

10+x+15-x+13+x+10-x+12-x+28+x =93
how do you solve this.

thanks.

2007-10-13 16:21:02 · 9 answers · asked by Anonymous

M b Y e W h O i R n K d

2007-10-13 16:01:20 · 4 answers · asked by peanut 1

6|x+4| = 8|x-2|

7|x+4| = 8|x-2|

2|x-6| + 8 = 4|x+2|-10

2007-10-13 15:56:27 · 13 answers · asked by Maurice J 1

-12+x = x+10

2007-10-13 15:43:07 · 9 answers · asked by Maurice J 1

I = E
------------
r + R
-----
N

or...

I = E/r+R/N

2007-10-13 15:43:00 · 5 answers · asked by Anonymous

Regular pentagon ABCDE has sides of length 3. Let R be the region composed of points outside ABCDE which are at a distance of at most 1 from some point of ABCDE. Compute the area of R..(Show all Works)


Thank u for HELP>>~+i appreciate

2007-10-13 15:37:51 · 2 answers · asked by ICECREAMU~~ 2

2+3y=6y-1/4
1/4 is same as (1 over 4)

2007-10-13 15:36:51 · 11 answers · asked by Maurice J 1

Hey, please help me do this, I have to submit for marks and I have no clue what to do.

A section road, represented by the line y = x + 2 with x =< 0 is to be connected to another section of road, represented by y = 2 - x with x >= 2, by means of a curved section of road, represented by a cubic curve y = ax^3 + bx^2 + cx + d, so that the resulting connected road has no sharp corners. Find the required values of a, b, c and d. In other words find a, b, c and d such that the function f(x) is differentiable, where:

f(x) = x + 2 where x =< 0
ax^3 + bx^2 + cx + d where 0 =< x =< 2
2 - x where x >= 2

Any help is greatly appreciated.
Thanks in advance.

2007-10-13 14:41:02 · 1 answers · asked by Anonymous