Mathematics - 28 July 2007

is there a distict area in a pentagon... i mean like in a triangle the degree thing is 180. it has to be so for all triangles..or for a circle it is 360. what about a pentagon?

2007-07-28 08:12:45 · 8 answers · asked by *Gen.Orange* 2

________ ______
(a^2-7a+6) (a^2-36)

this is hard.how would i find the least common denominator.
is there a online calculator of something that can help me.because i have alot of these to do to get a passing grade.?
im not a math genius so please dont tell me this is easy.please
let me know if you know about a website similar to quickmath.com to help me with these type of problems

2007-07-28 08:11:38 · 5 answers · asked by Anonymous

2 3/4 * 1/2 = ?

i get 3/4

2007-07-28 07:54:31 · 10 answers · asked by grem 3

I'm on my sister's profile. I've seem to misplaced my Math Notes somewhere in the house. I'm going to the 5th grade and I need to know these Math Names. Can anyone give me a short definition to the words below? I already know what a ratio is.

~Mean
~Median
~Mode
~Range
~Numerator
~Denominator

Thanks!

2007-07-28 07:50:27 · 9 answers · asked by LiJDivine ♥s MJ 5

I need to know how many combinations of 9 non-repeating letters I can make out of a pool of 26 letters. I would like to know the equation to so I can change the number of non-repeating letters.

2007-07-28 07:39:22 · 6 answers · asked by theninthplayer 1

If a rock is thrown upward with an initial velocity of 32 feet per second from the top of a 40-foot building, write the height equation using this information.

2007-07-28 07:32:01 · 3 answers · asked by __________ _ 1

2007-07-28 07:27:20 · 8 answers · asked by lifescircle 5

10ab/c^3d divided by 15ab^3/7c^3d^4
(this is how it looked at the bottom but i didnt want to confuse anybody)



(10ab ) (15ab^3)
_____ / _______
(c^3d ) (7c^3d^4)









my answer also comes out to long
*its 4 empty spaces at the top and 3 at the bottom to fill ill*

2007-07-28 07:27:17 · 4 answers · asked by Anonymous

If Jane has 8 apples and Simon has 3.

Why is a villion such a sexy number?

2007-07-28 07:25:19 · 3 answers · asked by doctorwand 2

Give the solution. Most thorough but short answer will get a 10!

2007-07-28 07:19:12 · 3 answers · asked by blahblah 2

"Graham's number" is really huge but what dangers do we face as human beings playing with numbers that stretch beyond our comprehension ?

What about numbers that are so massive they stretch the limits of the abstract to the point that comprehending their abstract nature becomes itself more of a challenge than comprehending magnitude?

Physicists have suggested that some numbers beyond a certain abstract threshold are in fact so massive just the concept and thought is enough to possess physical mass and it turn a posses a gravitational field.

What do physicists mean by a 13 dimensional number and how can a number posses a physical mass when it is merely a denotation of magnitude?

There is only one known 13 dimensional number, the number 1 villion but this is considerred so unstable it breaks down the laws of quantum reality and can only exists in parallel dimensions at any one time. What dangers to human health does this pose?

2007-07-28 07:18:19 · 7 answers · asked by doctorwand 2

Translate to an algebraic equation” : “7 less than the quotient of a number and 3 is twice the same number”
less that the quotient of x and 3 = twice x

2007-07-28 07:11:44 · 3 answers · asked by Marina P 1

Jan manages a pet store. During the morning 24 adults and 16 children entered the store. What is the probability that the next customer will be a child?

a) 3/5
b) 2/3
c) 1/4
d) 2/5

(all of the multiple choice answers are fractions)

2007-07-28 06:58:34 · 8 answers · asked by Anonymous

(81/10000)^-3/4 and I got 1000/27 Answer.
-(36/25)^ 3/2 and I got -216/125 answer
Square root of (-12)^2 and I got 12 answer
Square root of -(10)^2 and I got no solution

2007-07-28 06:57:38 · 8 answers · asked by Anonymous

If log w = 1/5 log x - log y, then w = ?

2007-07-28 06:55:32 · 6 answers · asked by Karina C. 2

Solve by Multiplying through with the Common Denominator using Equation Editor:
11 1 8 19
____X + ____= ____X + ___
3 6 3 6

(11/3X + 1/6= 8/3X+ 19/6)

the problem above is correct I could not get it right over each other for some reason. eqaution editor stinks:) thank you again

2007-07-28 06:47:56 · 3 answers · asked by Marina P 1

I've been stuck on these probs for the last 3 weeks.

Solve for X:
3x^2 (3X Square) - 4X + 2

Write the following sentence as an "if.......then...." conditional. Then write its' inverse, converse, and contrapositive sentences. Identify each of the sentences as true or false.
ALL RECTANGLES ARE PARALLELOGRAMS.

A right triangle has legs of 14cm and 23 cm. Determine the degree measure of the angle opposite the 14cm leg.

PLEASE EXPLAIN HOW YOU GOT THE ANSWER.

2007-07-28 06:42:57 · 3 answers · asked by jango b 1

My head is about to explode!

2007-07-28 06:38:23 · 6 answers · asked by fblecku 2

2007-07-28 06:30:39 · 3 answers · asked by JYC 1

f(x)=Sq. root of x^2+18x+86

2007-07-28 06:22:36 · 5 answers · asked by Anonymous

I mean to say that if the vertically opposite angles are equal then lines forming the vertically opposite angles are intersecting lines.

2007-07-28 06:11:01 · 5 answers · asked by Anonymous

Hi

Does anyone know how to integrate (sinx)^2?

Thanks

2007-07-28 06:08:55 · 3 answers · asked by nowandnever8 1

1 y=ln(8+x^2)
2 y=(2x^2+3)ln(x+1)
3 y=ln 6x

2007-07-28 06:07:18 · 3 answers · asked by NECE 1

its something that I've always struggled with. for example factor the number 105 is there an easier way than just guessing numbers? really need help

2007-07-28 05:56:41 · 4 answers · asked by joel 1

Hello, I am having a lot of trouble with patterns, can you help me please? This is for school and it's due soon I just can't figure it out. If you can, please post them and I will have so much less stress on my mind... thankyou!


Find the next two numbers in each pattern.
A) 4, 8, 12, 16, ______, _______
B) 3, 9, 27, 81, ______, _______
C) 144, 121, 100, 81, ______, _______
D) 3, -12, 48, -192, ______, _______
E) 7, 10, 14, 19, ______, _______
F) 2, 3, 7, 16, ______, _______

And then create an expression for the general term of each pattern.
(e.x. term n = (n) x (4) it's a sequence of numbers and it goes in order, term 1, term 2, term 3.... )

2007-07-28 05:17:37 · 12 answers · asked by ツ 1

2007-07-28 04:28:22 · 5 answers · asked by Imogen 1

2007-07-28 04:10:18 · 4 answers · asked by Imogen 1

2007-07-28 04:01:44 · 8 answers · asked by Anonymous

I've never done an integral like this, but this is what I've got so far:
Since the integral is in the form ∫ √(a² - x²) dx, i used the substitution x = asinθ, in this case
x = 2sinθ, so dx = 2 cosθ dθ.
When you plug it in you get:
∫ √(4 - (2sinθ)²) (2 cosθ) dθ =
2 ∫ √(4 - 4sin²θ) cosθ dθ =
2 ∫ √(4 (1 - sin²θ)) cosθ dθ =
2 ∫ 2√(cos²θ) cosθ dθ =
4 ∫ cos²θ dθ =
4 (1/2*θ + 1/4*sin(2θ) ) =

2θ + sin(2θ) + C

The problem is converting this answer back to x, which my book does not really discuss.
Since x = 2 sin(θ), θ = arcsin(x/2)
So 2θ + sin(2θ) + C becomes
2*arcsin(x/2) + sin(2θ) + C.
But how do you convert the sin(2θ)?
I tried the double angle formula and it didn't work well. The answer in my textbook is:
2*arcsin(x/2) + 1/2*x√(4 - x²) + C
I would greatly appreciate any help.

2007-07-28 03:13:42 · 5 answers · asked by MathGuy 6

Solve the triangle if angle B = 45 degrees, angle c = 95 degrees and side AB = 5 units. Use the law of sines.

2007-07-28 02:55:12 · 9 answers · asked by journey 1