Mathematics - 8 August 2007

Suppose a pitcher faces a batter who never swings and furthermore the pitcher throws balls ans strikes at random. For how many ball/strike sequences will the batter be called out on strikes on the 5th pitch?

please explain your answer so I can understand how this is done...thanks

2007-08-08 12:24:08 · 2 answers · asked by C K 3

Please help : (

2007-08-08 12:11:21 · 5 answers · asked by Texas Rose 3

Find the degree measure of either of the exterior angles formed by extending the base of an isoscele triangle if the vertex angle of the triangle measures:
b. 82 degree
c. 40 degree

thank you!

2007-08-08 12:10:34 · 3 answers · asked by Anonymous

2007-08-08 11:59:32 · 8 answers · asked by Snuggie 1

please help, I am not good at this. Thanks

2007-08-08 11:55:52 · 10 answers · asked by Camila 2

x - 3y =15
4x + y =8


2x - y = 22
-x + 3y = -15

2007-08-08 11:45:30 · 2 answers · asked by luicanna 1

I think this is a very interesting problem.

Let k be any positive integer. Show that there exists a positive integer n such that the first digits of 2^n are the digits of k. For example, if k = 2781, then there exists n such that the first 4 digits of 2^n, from the left to the right, are 2781.

2007-08-08 11:40:33 · 3 answers · asked by Steiner 7

Complete the number sequence.
15, 17, __, 28, 30 THe mean of the numbers is 23. What is the missing number?

2007-08-08 11:40:05 · 4 answers · asked by solar 2

2007-08-08 11:38:47 · 8 answers · asked by Anonymous

Im having some confusion with this derivative problems

y=e^2sin3x
y=2^sec3x

2007-08-08 10:53:55 · 4 answers · asked by Anonymous

a. x=-4,2
b. x=-3,5
c. x=-2,4
d. x=4,4

2007-08-08 10:47:32 · 11 answers · asked by hogy65 2

Solve the following equation in the interval [0, 2pi ].

2(cos(t))^2-cos(t)-1=0


t=_______pi

2007-08-08 10:43:24 · 2 answers · asked by Joe B 2

If the population of an area is approx 1 Million.... and 340,825 of that population sign a petition, what is the average % of signatures?

2007-08-08 10:27:58 · 9 answers · asked by Hello 3

(5/6)/(10/15) what do i have to do

2007-08-08 10:22:02 · 8 answers · asked by Anonymous

2007-08-08 10:14:35 · 3 answers · asked by Anonymous

2007-08-08 10:03:40 · 2 answers · asked by Anonymous

I need some help.
just answer the ones that you can do.
1.) tan^-1(-1)
2.) sec^2(11pi/6)
3.) sin(csc^-1(-2))
4.) sec^-1(sec(-30º))

2007-08-08 10:03:12 · 2 answers · asked by b country90 1

I need this for my homework

2007-08-08 09:55:12 · 5 answers · asked by Jama_HollaAtCha 1

A normal window has the shape of a rectangle surmounted by a semicircle of diameter equal to the width of the rectangle. If the perimeter of the window is 20ft, what dimensions will admit the most light (maximum area)

2007-08-08 09:50:15 · 4 answers · asked by Crew served weapon 2

All right, I got
x(sq rt x) - x
but it doesn't look right. There has to be some relationship between x and sq rt of x that I'm missing. Please help!

2007-08-08 09:40:20 · 10 answers · asked by Katie M 2

(t+5)/8 - (t-2)/2 = 1/3

2007-08-08 09:28:08 · 4 answers · asked by Jake P 2

2x-3 over 4 + 5=3x

2007-08-08 09:19:32 · 3 answers · asked by Jake P 2

hey guys i got this assignment on partial fractions. am good in maths and all these calculations but i missed the class and i tried to check the topic on ma text books but i didnt c it..so i dont hav any idea how am going to solve them..plz help mi xplain them and if possible u can help mi solve them. da questions r..
1) 3x+2/(x+1)(x^2+x+2)
2) (x-1)(x^2+x+1)/(x^2+1)(3x^2+4x+5)
3) 3/(x-2)(x^2+5)

thenx guyz.....

2007-08-08 08:47:58 · 2 answers · asked by christine JD 2

2007-08-08 08:45:39 · 10 answers · asked by crip4life braa 1

2007-08-08 08:43:42 · 6 answers · asked by crip4life braa 1

I need help to solve this riddle.

Person A has one amount of money in his pocket, Person B has one amount in his pocket.

If person A gives person B X amount from his pocket, person B will end up with 3 times more money in his pocket than person A.

However if person B gives person A the X amount of money person A will end up with 2 times more money than person B in his pocket.

How much does each guy have in his pocket, and how much is X???

Can someone help me solve this riddle??

2007-08-08 08:34:57 · 15 answers · asked by Bjoern H 1

18.)5% of 320 = ____?

19.)20% of 25 = ____?

20.)- 7 - 3 = -4
A.)True
B.)False

22.)If you can travel from Orlando to Miami (240 miles) in 4 hours; how long would it take you to travel from Ft. Lauderdale to Tallahassee (420 miles)?
A.)6 hours
B.)7 hours
C.)8 hours
D.)8 hours 30 minutes

23.)Match the numbers to the correct letters:
1)8 < 4(x+1)
2)3(x-1) < 3
3)2(x-1) < -4
4)5x + 4 > -6

A) x < 2
B) x > 1
C) x > -2
D) x < -1


#25. )Solve this inequality showing ALL work: -2x + 4 < 16

2007-08-08 08:21:40 · 4 answers · asked by Anonymous

I've been thinking about this but couldn't finish up a proof yet:

For each x >0, define frac(x) as the fractionary part of x, that is, f(x) = x - [x], where {x} is the largest integer <= x.

Let p>0 be an irrational. Show that the sequence (frac(n*p), n=1,2,3....) is dense in [0, 1].

Thank you
Steiner

2007-08-08 07:49:57 · 3 answers · asked by Steiner 7

Hi.
I have two problems that I need help with, please.
1) I need to classify the following equation as an identity, conditional equation or contradiction: sin x = tan x cos x
2) I need to convert the following equation to polar form:
2x - 2y = 1
Could someone please walk me through the solutions step by step and explain each step so I can understand how to do this.
Thank you.

2007-08-08 07:39:34 · 2 answers · asked by F 6

Just wondering.

2007-08-08 07:29:38 · 9 answers · asked by Anonymous