Mathematics - 29 June 2007

In the euclidean plane,point A is on a circle centered at point O, and O is on a circle centered at A.The circles intersect at points B and C.What is the measure of angle BAC???

2007-06-29 22:57:52 · 1 answers · asked by meagainsttheworld_shakur 1

what is the area of the region bounded by the coordinate axes and the line tangent to the graph of y=(1/8)(x^2)+(1/2)x+1 at the point (0,1)

2007-06-29 22:49:36 · 3 answers · asked by meagainsttheworld_shakur 1

which of the following statements are true for every function f,defined on the set of all real no.s such that lim(x tends to 0) f(x)/x is a real no. L & f(0)=0 ??

1)f is differentiable at 0

2)L=0

3)lim (x tends to 0) f(x)=0

2007-06-29 22:39:28 · 4 answers · asked by meagainsttheworld_shakur 1

what shape is a regular octagon

2007-06-29 22:32:31 · 14 answers · asked by Anonymous

it is urgent pls give me a link

2007-06-29 22:25:33 · 2 answers · asked by karlo c 1

how do u distinguish whether u have a pair of coincident lines or parallel lines when u r given a combined equation of a pair of straight lines?

2007-06-29 22:02:36 · 10 answers · asked by praveen k 1

2007-06-29 22:02:31 · 3 answers · asked by HIMANSHI K 1

sensitivity - the sentsitivity of a symptom is the probability that the symptom is present given that the person has a disease.

specificity - the specificity of a symptom is the probability that the symptom is not present given that the person does not have a disease.

suppose the disease is lung cancer and the symptom is cigarette smoking. if we assume 87% of people with lung cancer and 20.9% of people without lung cancer are smokers. what are the sensitivity and spesificity in this case? can cigarette smoking be used as a diagnostic tool for predicting lung cancer? why?

2007-06-29 21:51:32 · 1 answers · asked by nobody 1

/* e(x) = 1 + x + x2 / 2! + x3 / 3! + x4/ 4! --------- xn / n! */

ender x number 1
endre n number 2
out put 1.176000
pls correct it math
what type of math this pls tall me

#include
#include
#include
void main()
{
int fact();
float x, t, sum;
int i, n;
printf("\n Enter the Value of x & n:");
scanf("%f %d", &x, &n);
x = x * 3.14/180;
t = 1;
sum = 1;
for ( i = 1; i <= n; i++)
{
t = t * pow(x, i) / fact(i);
sum = sum + t;
}
printf("\n The Value of ex = %f \n", sum);
}
int fact( int n)
{
int i;
for ( i = 1; i <= n; i++)
fact *= i;
return fact;
}

2007-06-29 21:26:19 · 3 answers · asked by robin j 1

2007-06-29 21:10:39 · 5 answers · asked by akshay k 2

a) solve for all values of x that statisfies the equation. b) Graph the functions y =x and y = 2 squareroot x onthe same graph (by plotting points if necessary). Show the points of intersection of these two graphs.

2007-06-29 20:46:50 · 2 answers · asked by Sheri C 1

The cost of producing a number of items x is given by C mx  b, in which b is the fixed cost and m
is the variable cost (the cost of producing one more item).

(a)

If the fixed cost is $40 and the variable cost is $10, write the cost equation.

(b)

Graph the cost equation.

2007-06-29 20:16:10 · 3 answers · asked by Dave 4

I got the answer $107, 35.44 This is not one of the answers what am I doing wrong? please hurry taking a timed test!

2007-06-29 19:47:39 · 8 answers · asked by Flagstaff mama 2

I'm looking for a calculator to help me add and mostly subtract time in the hour:minute:second format. Something either online or that I can run on my computer off line. Best would be a formula I could insert into a spreadsheet - Microsoft Works.

2007-06-29 19:45:00 · 4 answers · asked by swm_seeks_sf 3

9^x+^2 = 240 + 9^x

2007-06-29 19:16:11 · 6 answers · asked by knlwin 1

2007-06-29 19:00:34 · 5 answers · asked by Anonymous

On his way from suburb A to surburb B, the bus driver kept to the speed of 44km/h. When he arrived at B, he found out he needed to hurry to be back in A on time. So he drove the bus at a constant speed of 66km/h on the way home along the same route. What speed did he need to keep constant during the whole trip so that it would take the same amount of time.

The answer might be 55, but my tutor says it might not be, so I'm confused.

2007-06-29 18:54:01 · 6 answers · asked by Elder Price 2

What observation can make about the successive partial sums of this sequence? In particular, what number does it appear that the sum will always be smaller than?
Answer:
Terms Sum

1
1, 1/3
1,1/3,1/9
1,1/3,1/9,1/27

2007-06-29 18:50:55 · 8 answers · asked by Sheri C 1

i am able to prove it only for acute angles in various quadrants. not obtuse ie. the ones starting all the way from the 1st quadrant.

plas help:)

thanks

and also, could you give me the proof for sin(-theta) = -sin theta and cos(-theta) = cos theta for angles that are not acute?

thanks:)

2007-06-29 18:20:21 · 3 answers · asked by tut_einstein 2

2007-06-29 17:57:43 · 14 answers · asked by sittinncat 1

-2^3 = -8

so log -8 = 3 what's wrong with that?
-2

2007-06-29 17:55:31 · 11 answers · asked by tut_einstein 2

2007-06-29 17:49:30 · 4 answers · asked by maya 1

Consider families with two children, assuming equal probability for both genders. Let A be the event that the chosen family has at most one boy, B be the event that the chosen family has a boy and a girl and C be the event that either the chosen family has two boys or two girls.

a) Is P(AB) = P(A)P(B)? Are A and B independent? Are they mutually exclusive?

b) Is P(BC) = P(B)(C)? Are B and C independent? Are they mutually exclusive?

However, prove that if A and B are independent events and P(A)>0 and P(B)>0, then A and must be not mutually exclusive. (A very simple proof consists of one line only)

2007-06-29 17:41:02 · 3 answers · asked by summer 1

This is sort of not what the question was. I was a sixth grader during the past year and I am going into 8th grade math this september. Can you please give me a few problems to work on? I can do some algebra, 2 variables are tricky, fractions are great. Thank you for your effort. :)

2007-06-29 17:35:36 · 3 answers · asked by Kirlia 2

How many statdard deviation above and below teh mean do the quartiles of ANY Normal distribution lie? (Use the standard Normal distribution to answer this question).

2007-06-29 17:33:02 · 2 answers · asked by ohmygosh 3

can someone solve this by hand 50000=10000(1+.10/12)^12t

2007-06-29 17:30:03 · 3 answers · asked by pre med student 2

Need help figuring this out.
A-6=2B
A+B=15
What is A & B

2007-06-29 17:22:55 · 12 answers · asked by JoAnn S 1

how do u do this by completing the square and pls explain

2007-06-29 17:16:24 · 6 answers · asked by melviely_mj 2

2007-06-29 17:13:21 · 7 answers · asked by maya 1

Can anyone help with this? Please!

2007-06-29 17:11:07 · 9 answers · asked by sittinncat 1