Mathematics - 22 August 2007

2007-08-22 11:46:42 · 7 answers · asked by Anonymous

plz show the steps plz i need your help then free 10 pts
prove the identity or i cannot attend college plz im desperate for help if you answer these correctly then i can enter plz help me
1) (1+sin x) / cos x + cos x / (1+ sin x) = 2 sec x

2) (sinx +tan x) / (1+ cos x) = 1/ cot x

3) sec ^2 x / ((sec^2 x) - 1) = csc ^2 x

4) sincos2+sin^3x = 1 / csc x

2007-08-22 11:29:34 · 9 answers · asked by Anonymous

1)X-2y=-25
3x-y=0

2)u-v=0
7u+v=0

3)2a=8
a+b=2
Use The Substitution Method and the Combination Method.(Please Help)

2007-08-22 11:26:52 · 4 answers · asked by Anonymous

given the vectors v=-2i+5j and w=3i+4j, determine

1. (1/2)v
2. w-v
3. length of w
4. the unit vector for v

2007-08-22 11:18:18 · 2 answers · asked by Anonymous

i need help? i dont get it. can someone give all the answers to me or give me some tips. here it is:

lesson 10-4 practice b theoretical probability

AN EXPERIMENT CONSISTS OF ROLLING ONE FAIR DNUMBER CUBE. FINE THE PROBABILITY OF EACH EVENT.

number 1: P(3)
number 2: P(7)
number 3: P(1 or 4)
number 4: P( not 5)
number 5: P( <5)
number 6: P(>4 )
number 7: P(2 or odd)
number 8: P(3) ( equal or <)

PART 2:

AN EXPERIMENT CONSISTS OF ROLLING TWO FAIR NUMBER CUBES. FIND THE PROBABILITY OF EACH EVENT.

9: P( total shown = 3 )
10: P( total shown = 7 )
11: P( total shown = 9 )
12: P( total shown = 2 )
13: P( total shown = 4 )
14: P( total shown = 13)
15: P( total shown = (equal to or < 8 )
16: P( total shown = (equal to or < 12)
17: P ( total shown = ( < 7)

18: A BAG CONTAINS 9 PENNIES, 8 NICKELS, AND 5 DIMES. HOW MANY QUARTERS SHOULD BE ADDED TO THE BAD SO THE PROBABILITY OF DRAWING A DIME IS 1/6?

2007-08-22 11:07:38 · 2 answers · asked by Anonymous

how do you solve x^2 - 9 and the equation x^2 - 10

2007-08-22 11:06:30 · 6 answers · asked by Anonymous

Math.. forming a quadratic function given three points.

2007-08-22 11:03:13 · 4 answers · asked by Ricardo C 1

My daughter and I both got the answer 3, but her teacher said it's wrong.

2007-08-22 11:01:59 · 11 answers · asked by Emily Dew 7

be specific please!!!i know how to find the domain and range of a normal function....

2007-08-22 11:01:08 · 1 answers · asked by pinkstar_032003 1

be specific please!!!i know how to find the domain and range of a normal function....

2007-08-22 11:00:43 · 1 answers · asked by pinkstar_032003 1

2007-08-22 10:59:12 · 4 answers · asked by Red 2

I have alot more problems then this. I'm stuck now.

I'm having troubles with these type of problems...

33 + 15w = 3w - w + 4w

12(5 + 2y) = 4y - (6 - 9y)

3y + 8 = -8x + 3
*slope intercept form*

Can anyone tell/show me how to do these?

2007-08-22 10:50:14 · 7 answers · asked by Msz Nia [[BabiieThiiqknesz]] 3

2007-08-22 10:31:18 · 8 answers · asked by Red 2

m= y2-y1/ x2-x1 is the formula

(4,5) & (-1,2) so, wouldn it be:
2-5 = -3 =3
------ -- --
-1-4 -5 5

also y=2x don't you just divide y out of the equation?

y=2x
-- --- = 2? since y = 2x, then 1/2y =x
y y

finally 11=5x-9y
i'm lost on this one.

2007-08-22 10:28:56 · 3 answers · asked by shayne t 2

2007-08-22 10:21:19 · 2 answers · asked by nigga w 1

2007-08-22 10:18:23 · 7 answers · asked by kristen c 1

2007-08-22 10:17:37 · 5 answers · asked by Red 2

Dierections:Use the distributive property to simplify each expresion.
1) 9x (5+3) x 4 - 6=

2) (8+7) x 3 x 2=

Use the disruptive property to multiply mentaly!

1) 7x 57=
2) 8x 97=
3)5x 402=
4) 8x 103=
5) 9x 213=
6) 7x 49=

GOOD LUCK TO ALL REMEMBER I WILL GIVE U TEN POINTS IF U R RIGHT SEE YA!!!!!!!!!!!

2007-08-22 10:15:57 · 9 answers · asked by Anonymous

2007-08-22 10:13:23 · 8 answers · asked by morris w 1

I need to check my answers and I'm not sure I got them right. If you could please explain...?

QUESTION 1:
Solve the equation. Check your solution. (sqrt)r + 5 = 11
a) 126
b) 6
c) 17
d) 116


QUESTION 2:
If the password to get into a garage is four numbers long, and you can only use the numbers one through nine, how many different passwords would there be?
a) 3024
b) 6561
c) 36
d) 4


QUESTION 3:
Suppose the area of a square is x^2 - 6x + 9. What is the perimeter of the square?
a) x-3
b) 2x-6
c) 4x-12
d) x+3


QUESTION 4:
Simplify the expression. 4(sqrt)7 + 8(sqrt)63
a) 76(srt)7
b) 12(sqrt)63
c) 28(sqrt)7
d) 28(sqrt)63

QUESTION 5:
How many real roots are there for the equation: x^2 + 4x - 1 = 0
a) 0
b) 1
c) 2
d) 4

2007-08-22 10:04:29 · 3 answers · asked by song_fiend 2

log (base=a) (argument=a) (exponent of argument=x)
and a^(log (base=a) (argument=x)

What are the restrictions on "a" and "x"?

if you're not sure with the terminology:
ex. log x ---> base=10 argument=x

2007-08-22 10:00:55 · 2 answers · asked by Anonymous

identify the axis of symmetry, create a suitable
table of values, and sketch the graph (including the axis of symmetry).
y=-x^2+6x-2

2007-08-22 09:46:02 · 2 answers · asked by Anonymous

1. 625mm=_______hm
2. 0.000254 cg= ______pg
3. 1.047 dm^3=_______cm^3
4. 0.0065 nL=________kL
5. 17 Mn=________m

2007-08-22 09:45:03 · 1 answers · asked by Karen R 1

2007-08-22 09:32:15 · 7 answers · asked by jennifer m 2

1

f(x)=x sqrt[(x^2)+16]
defined on [-7,4] interval

f(x) concave down on the region ? to ?
f(x) concave up on the region ? to ?
inflection point?
minimum?
maximum?

2.
f(x) = x^3/[(x^2)-4]

defined on the interval [-15,15]

vertical asymptotes (2 of them)??

concave up on the region ? to ?
and ? to ?

inflection point?

2007-08-22 09:22:47 · 1 answers · asked by Anonymous

I know how to evaluate limits at infinity but I don't know how to evaluate it at a number. Can someone give show me the answer and explain why it is. THANKS

2007-08-22 09:20:53 · 4 answers · asked by chris s 1

what is the antiderivative of this? help please?

2007-08-22 09:14:38 · 4 answers · asked by Anonymous

1.
f(x)= 4x^3-6x^2-144x+1

decreasing on what interval?
increasing on the (MINF, ?) and (?,INF) interval

local max?
_________________________________
2.
f(x)=4x+2x^-1
local max?
value?

local min?
value?

2007-08-22 09:07:43 · 1 answers · asked by Anonymous

how do i solve this ?

2007-08-22 09:06:54 · 4 answers · asked by Anonymous

2007-08-22 08:59:28 · 7 answers · asked by Alexander 6