Mathematics - 20 October 2007

2007-10-20 08:43:08 · 6 answers · asked by Anonymous

Draw the graph of the equation x^4-4x^2-x^2y^2+4y^2=0.
anything will help. thanks

2007-10-20 08:43:07 · 3 answers · asked by Joe J 1

they both have same number of vertices and four faces

2007-10-20 08:41:24 · 1 answers · asked by Newton 1

the random variable c is the population of cities larger than 1000. the distribution is called pareto distribution and its CDF is 1-1000/x

1) calculate the chance that the city would have a population less than 10000
2) given that the city has a population of more than 15000, what is the chance the population will be more than 20000

im not sure how to answer this question! any help would be great i have my midterm this thursday thanks!

2007-10-20 08:31:39 · 2 answers · asked by Angel eyes 2

How would you find the probability of
1) an ace given that it is a diamond (standard deck 52 cards)
2) a diamond given it is an ace (standard deck of cards)

the answer my professor gave us was
1) 4/52
2) 13/52

i dont know how he got this so any help would be appreciated!

2007-10-20 08:29:31 · 5 answers · asked by Angel eyes 2

How would you write that in numbers.

2007-10-20 08:22:53 · 6 answers · asked by Right here Right now 1

2007-10-20 08:17:13 · 3 answers · asked by densham76 2

2007-10-20 07:46:52 · 5 answers · asked by Anonymous

2007-10-20 07:44:09 · 4 answers · asked by Anonymous

∫1/(x^2+r^2) dr^2

help much appreciated .. =)

2007-10-20 07:40:49 · 3 answers · asked by xoom 2

my homework wants me to graph a logarithm..but how do you graph those it's got a number that is sub like log2(x+2) but the 2 after the log is below if you know what i mean how do you input that??

2007-10-20 07:31:16 · 1 answers · asked by kyubinarutokun 2

Two balls are thrown upwards from the edge of a cliff 432 ft above the ground. The first is thrown with an initial velocity of 48 ft/s and the other is thrown a second later with an initial velocity of 24 ft/s. DO the balls ever pass each other ?

2007-10-20 07:26:13 · 2 answers · asked by zatz da one 1

Find the exact values of the following, in surd form form where necessary:

a) sin TT

b) tan TT/4

c) sin 3TT/4

ps. TT is supposed to be pi

2007-10-20 07:25:15 · 8 answers · asked by Anonymous

Consider the two equations:

a = k(m)^-1

and

b = k(m)^1

What does "k" equal and how do you find it?

2007-10-20 07:17:00 · 3 answers · asked by Young Einstein 3

AB {ll (parallel to)} DE. Prove‘angle’ABC + ‘angle’BCD =180 + ‘angle’CDE
http://img102.imageshack.us/img102/1672/newbitmapimagemi5.png

Prove:AB { ll (parallel to)} EF
http://img134.imageshack.us/img134/1913/newbitmapimagevy2.png

Find value of x.
http://img412.imageshack.us/img412/774/newbitmapimageel8.png

‘angle’DFP, ‘angle’ EDQ & ‘angle’ FER are exterior angles of ‘triangle’ DEF. Prove: ‘angle’DFP + ‘angle’ EDQ + ‘angle’ FER = 360
http://img266.imageshack.us/img266/3655/newbitmapimagepk8.png

BD & CD are angle bisectors of ‘angle’ ABC &‘angle’ACE respectively.Prove ‘angle’ BDC=½ ‘angle’BAC
http://img86.imageshack.us/img86/8948/newbitmapimagenm9.png

PT (perpendicular to) QR & PS bisects ‘angle’QPR. If ‘angle’ Q = 65 & ‘angle’ R = 33. Find ‘angle’ TPS
http://img503.imageshack.us/img503/4818/newbitmapimage2vm6.png

ABCD & BPQ are lines.BP=BC & DQ {ll(parallel to)} CP.Prove CP=CD & DP bisects ‘angle’CDQ
http://img249.imageshack.us/img249/498/newbitmapimage2ax1.png

2007-10-20 07:15:57 · 2 answers · asked by friend s 1

To the NEAREST HUNDREDTH, solve 4 (5 - x) = 8 (x - 10).

i got 8.3 as my answer. but the teacher says i got it wrong.......... so plz tell me HOW u got ure answer.

2007-10-20 07:12:57 · 6 answers · asked by xOXoXox 3

If two sides of a triangle are 8 and 22, what is the range of possibilities for the third side?

a)14
b)8
c)4
d)12

2007-10-20 07:12:30 · 6 answers · asked by Anonymous

If two sides of a triangle are 5 and 8, the third side could be

a)3

b)6

c)13

d)17

2007-10-20 07:09:51 · 7 answers · asked by Anonymous

2007-10-20 07:08:22 · 2 answers · asked by Felicia B 1

Which of the following theorems is stated: The sum of the measure of the angles in a triangle is 180 degrees?

a)Triangle Sum Theorem

b)Triangle Exterior Angle Theorem

c)Isosceles Triangle Theorem

d)Triangle Inequality Theorem

2007-10-20 07:00:53 · 5 answers · asked by Anonymous

if 2x+4=y and y=3x-6, then 2x+4=3x-6

2007-10-20 06:57:55 · 4 answers · asked by Nat 1

if 2 lines do not intersect then they are parallel

2007-10-20 06:55:57 · 10 answers · asked by Nat 1

g(x)=x^2-2x-15

2007-10-20 06:50:11 · 2 answers · asked by Anonymous

2007-10-20 06:47:21 · 16 answers · asked by Anonymous

Let G be a group. How do you prove that the mapping alpha(g) = g^-1 for all g in G is an automorphism if and only if G is Abelian.

2007-10-20 06:42:32 · 3 answers · asked by Anonymous

i wanna know from a material engineer scholar or graduate if they
used trigonometry,geometry or algebra in there classes or at work
cause i find trigonometry real difficult.

2007-10-20 06:37:30 · 3 answers · asked by Anonymous

2007-10-20 06:29:03 · 10 answers · asked by . 1

2007-10-20 06:27:55 · 11 answers · asked by . 1

i need help with multiplying decimals like these 13/9.367 and 5.3/4.38

2007-10-20 06:27:16 · 2 answers · asked by cdy_cambell 2

using foil will be best suited for solving this math problem, I tried to figure out but I ended up getting the wrong answer. So please explain your answer. Thanks

2007-10-20 06:25:55 · 7 answers · asked by Anonymous