Mathematics - 22 October 2007

Based upon the following information provided below answer the following:
The Bottom Line Gift Boutique had been the target of many shoplifters in the past, but its newly installed camera security system has helped in the apprehension of 250 shoplifters in the last six months.
A breakdown of these 250 shoplifters revealed the following:
Males = 130, 60 were first time offenders and 70 were repeat offenders
Females = 120, 44 were first time offenders and 76 were repeat offenders
First-Time Offenders = 104 and repeat offenders = 146

Assume the apprehended shoplifter is chosen at RANDOM.

What is the probability that the shoplifter is a female, given that the shoplifter is a Repeat Offender?
a. .3040
b. .4800
c. .5840
d. .6333
e. None of the above

2007-10-22 22:32:30 · 6 answers · asked by jane 1

hey i'm stuck on this question:
i have to use the definitions of hyperbolic functions to show that cosh^2x = 1/2(cosh 2x + 1)

i assume that means i have to use
cosh^2 x - sinh^2 x = 1
sinh(x +/- y) = sinh x cosh y +/- cosh x sinh y
cosh (x +/- y) = cosh x cosh y +/- sinh x sinh y

so can anybody show me step by step what to do?
just a final answer is no good to me, i need to understand this.
cheers.

2007-10-22 21:56:11 · 2 answers · asked by martin r 1

1. 6x(x-1)=21-x ,solve by factoring

2. x2=3/4x-1/8 ,solve by completing the square

x2 is x squared

need solutions with answers

2007-10-22 21:45:46 · 2 answers · asked by bandwagon fan™(T.D.) 4

2007-10-22 21:37:51 · 1 answers · asked by Anonymous

2007-10-22 21:19:24 · 2 answers · asked by pathma cute 1

the ans is -log2 but let me know the steps of solution

2007-10-22 20:47:06 · 1 answers · asked by mohdumar_amu 4

wouldn't x have to be some sort of decimal?

2007-10-22 20:31:44 · 8 answers · asked by Conservative Jesus 1

A bag holds 8 chips of 4 different colors (2 chips per color).

What is the probability that when four chips are chosen from the bag WITH REPLACEMENT, there is:

a. at least three different colors?

b. all four colors?

2007-10-22 20:30:15 · 1 answers · asked by Anonymous

If P(4) = 0, then a complete factorization of P(x) = 6x^3 – 34x^2 + 36x + 16 is

A) -2(x – 4)(x - 2)(3x + 1)
B) 2(x – 4)(x - 2)(3x + 1)
C) 2(x – 4)(x + 2)(3x - 1)
D) 2(x + 4)(x - 2)(3x + 1)

2007-10-22 20:18:01 · 2 answers · asked by Anonymous

21, 7, 2, 6, 5, 94.
Numbers can only be used only once,
times, divide, plus and minus operations can be used.

And is there any way to figure it out other than random guesses?
Thanks!

2007-10-22 20:17:29 · 2 answers · asked by Jolly Polly 3

find the solution y(t) for
y'' - 2y' + 7y = sin(t) y(0)= 0 y'(0) = 0

I was able to reach the laplace transform of y(t) as:
1/ (s^2 + 1) ( s^2 - 2s + 7)

but i have no idea how to invert it back into y(t), please help me

2007-10-22 19:55:02 · 5 answers · asked by phil h 2

I used to be able to do logorithims a long while ago, but now I forgot how to. I think I got the hang of it now, but I just want to make sure.

2007-10-22 19:52:00 · 7 answers · asked by Conservative Jesus 1

1. The area of a gymnasium floor is 264 square yards. The floor is 11 yards wide. How long is the floor?
A.253 yards
B.24 yards
C.11 yards
D.242 yards

2.The area of a square piece of cardboard is 81 sq.in. What is the length of the cardboard?
A.6.28in
B.3.14in
C.8in
D.9in

3.How much water can be held by a cylindrical tank with a radius of 12 feet and a height of 30 feet?
A.13,564.8 cubic feet
B.2,260.8 cubic feet
C.33,912 cubic feet
D.54,259.20 cubic feet

2007-10-22 19:50:45 · 7 answers · asked by BravesFanForLife 3

The volume, V(w) of a garden shed can be represented by the expression V(w) = w^3 - 10w^2 + 31w - 30, where w is the width of the garden shed in metres. Completely factor the expression. Find the dimensions of the garden shed.

2007-10-22 19:44:11 · 2 answers · asked by Anonymous

2007-10-22 19:42:24 · 2 answers · asked by Anonymous

If P(-2/3) = 0, then one factor of the polynomial P(x) must be

A) 2x - 3
B) 3x + 2
C) 3x - 2
D) 2x + 3

2007-10-22 19:41:21 · 5 answers · asked by Anonymous

If A and B are 8 x2 matrices, and C is a 5 x 8 matrix, which of the following are defined?

A. B–A
B. AC
C. C transpose
D. BA transpose
E. CB
F. C+A

2007-10-22 19:37:09 · 3 answers · asked by Anonymous

what is the GCF?

2007-10-22 19:34:47 · 4 answers · asked by mig_e72 1

Find the value for k for which the matrix
A=
-3 -6 -18
2 -9 -14
-8 3 k
has rank 2.
K=

2007-10-22 19:32:09 · 2 answers · asked by Anonymous

----------
T U
(There are dots at each end of the line segment)
->
TU
<-->
UT
<-->
TU
----
TU

2007-10-22 19:25:29 · 2 answers · asked by BravesFanForLife 3

2007-10-22 19:20:43 · 3 answers · asked by Anonymous

I just don't really understand the concept of e fully.

2007-10-22 19:09:30 · 10 answers · asked by Conservative Jesus 1

when trying to find C,
why is it possible that there are two answers

2007-10-22 19:04:59 · 6 answers · asked by Anonymous

1.188.4 centimeters
2.47.1 centimeters
3.94.2 centimeters
4.9.55 centimeters

2007-10-22 19:04:19 · 10 answers · asked by BravesFanForLife 3

(x^2-1)^2(x+1)^(1/2)/(x-1)^-(3/2)

The answer is apparently "very easy", with "no tricks" breaking down to a much simpler form with an x^7 somewhere in it. Its been driving me barmy for weeks, as even the on-line calculators blow up trying to reach the answer..I've tried looking for diff's of squares,tried squaring the lot, square rooting it all, but with no denominator it just inflates and complicates

2007-10-22 18:51:31 · 2 answers · asked by c0cky 5

2007-10-22 18:43:31 · 3 answers · asked by Anonymous

Write the following polynomial in terms of its linear factors:

P(x)=x^4-5x^3+2x^2+22x-22


So far I have used synthetic division and found that there are two zeros and the upper boundry is 5 while the lower is -2. I honestly am not even sure if I am even on the right path. Can someone please help me?

Thank you!

2007-10-22 18:40:38 · 3 answers · asked by Doodlebug 4

Teacher said 4 isn't used in the problem. Please help, although she lies so try it....

2007-10-22 18:32:13 · 4 answers · asked by Joab C 2

always perpendicular, no matter what the shape of the curve is.

2007-10-22 18:21:34 · 3 answers · asked by Anonymous

Is the limit uniform? (Hint: Find the max and min values of f_n). For which values of x is (lim f_n)'(x) = lim f '_n(x)?

2007-10-22 18:20:57 · 2 answers · asked by han 1