Mathematics - 10 June 2007

keep it simple, no abstract lines or figures... please

2007-06-10 09:10:02 · 4 answers · asked by X the Unknown 3

Most helpful person gets best answer:

1. Pythagorean Theorem (a simple proof... please)

2. The bisectors of the angles of a triangle intersect in a point that is equidistant from the 3 sides of the triangle.

3. A dilation maps any triangle to a similar triangle.

4. If a quadrilateral is inscribed in a circle, then the sum of the products of its two pairs of opposite sides is equal to the product of its diagonals.

Help GREATLY appreciated...

2007-06-10 08:47:33 · 1 answers · asked by X the Unknown 3

Can you please help me do this question?
Give your answers correct to 4 significant figures.

2007-06-10 08:41:11 · 7 answers · asked by keiryuuyukito 1

Thanks.

2007-06-10 08:34:07 · 0 answers · asked by Anonymous

2007-06-10 08:31:26 · 10 answers · asked by Anonymous

Five bales of cardboard must be moved 45 feet. If each bale weighs 66 pounds, find the amount of work required to move the cardboard.

2007-06-10 08:28:34 · 5 answers · asked by vanessandavid 1

2007-06-10 08:24:41 · 3 answers · asked by Anonymous

3x-y is greater then or equal to 2

2007-06-10 08:22:26 · 6 answers · asked by Anonymous

7 qt 6 pt
x ____2


?????

2007-06-10 08:15:44 · 3 answers · asked by lilnessaslove 1

Hey,

I've got a que about this:
log(sub)2 (-x - 3) - log(sub)2 (x - 1) - log(sub)2(x + 3) = 1

I did this first -

log(sub)2 [(-x - 3) / (x - 1) / (x + 3)] = 1

and then i just cant figure out.
All suggestions greatly appriciated.

2007-06-10 08:13:51 · 5 answers · asked by jill b 1

evaluate the following expression. let a=2,b=5,and c=1 -3a+2(b2+c)

2007-06-10 08:10:32 · 4 answers · asked by jessys 1

2007-06-10 08:07:53 · 6 answers · asked by lilnessaslove 1

Simplify the expression. First use the distributive property to remove any parentheses. -(-3m + 8n - 5p)

A ) 3m - 8n - 5p
B ) -3m + 8n + 5p
C ) -3m + 8n - 5p
D ) 3m - 8n + 5p

2007-06-10 08:06:06 · 9 answers · asked by Anonymous

factor the following expression,be sure to use the greatest common factor(GFC).8y3-12y2+28y

2007-06-10 08:03:06 · 2 answers · asked by jessys 1

log(sub)2 x + log(sub)2(x-2) - log(sub)2(x-3) = 3
log(sub)2 [x(x-2)/(x-3)] = 3
(x^2 - 2x)/(x-3) = 2^3=8
x^2 - 2x = 8x - 24
x2 - 10x + 24 = 0
(x-6)(x-4) = 0

x=6, 4

2007-06-10 08:00:01 · 3 answers · asked by jill b 1

Given f(x) =
{(c^2-x^2), if x<0
{(c cosx), if x>0

what is c so f(x) is continuous

I think i have the answer but i need to be sure.

Thank you :)

2007-06-10 07:50:10 · 2 answers · asked by Corian 2

Never really enjoyed math, but I do it anyway. Any advice on learning to do and understand conversion factors? Example:

The distance of a 220. yard race is equivalent to ___ cm.

The answer is 2.01 10^4. How'd they get this?

2007-06-10 07:48:04 · 4 answers · asked by Lovely 3

2007-06-10 07:45:52 · 14 answers · asked by ashley t 2

Hi, log question...

log(sub)2 [x(x-2)/(x-3)] = 3

Do I first multiply x with x and -2 and then divide with (x-3).
How did you get your answer?

Gracias!

2007-06-10 07:37:49 · 3 answers · asked by Lume 2

My textbook has a problem where it asks me to find the radius of a cone. It gives me an area of 500pi u^2 and a height of 5 ft. However, I can't seem to get the right answer. I think that it is because the formula T=pi*r*l+pi*^2 calls for lateral height. Can someone please help me solve this problem?

2007-06-10 07:33:44 · 2 answers · asked by mbtafan 3

If a triangle has sidess 6, 8, and 10, is it acute, right, or obtuse?

2007-06-10 07:27:00 · 11 answers · asked by rockdude 1

the teacher gave us worksheets to help us, but he gave us things we didnt learn! i have no way to contact my teacher. this is not an actual problem on the test, but can you please explain the process on how to do this? please, im not trying to get answers from you or cheat i just need help on this one problem.
thanks
in a school survey, 5.5% of students chose "teacher" as a career goal, while 6.4% chose "chef." from this information, predict how many of a school of 200 students would choose "chef"

2007-06-10 07:20:50 · 6 answers · asked by Arcadia 3

In maths fractions are more tricky. How2 can it be solved

2007-06-10 07:15:42 · 5 answers · asked by Anonymous

Thank you to all those who bothered to reply. There is one que left which I think I did by how you guys showed me.
so,

ln(x-2) + lnx = 0
ln [x(x-2)] = 0
e^(ln x^2-2x) = e^0
x^2 - 2x = 0

is this correct? How should I proceed?

Thx!

2007-06-10 07:12:36 · 6 answers · asked by jill b 1

2007-06-10 07:01:27 · 13 answers · asked by bearone99 1

Two triangles are similar. The lengths of the sides of the larger triangle are 12, 15, and 18. The longest side of the smaller triangle is 6. Find the length of the shortest side of the smaller triangle.

2007-06-10 07:00:43 · 4 answers · asked by Anonymous

17.) In his will, Mr. Adams left 25% of his estate to his wife and unevenly divided the balance between his son and his daughter. If the son received $36,000 as his share, what was the total value of the estate?

2007-06-10 06:51:58 · 7 answers · asked by Lee H 1

One angle is four times as large as another angle. If the angles are complementary, find the number of degrees in the smaller angle.

2007-06-10 06:47:29 · 8 answers · asked by Anonymous

(2x^2 / 5) (10 / 7x) + 2 / x

I got 20x^2 + 70 / 35x. Is this correct? Can it be anymore simplified? Please show your steps on how you obtained your answer and try not to make to wordy while you're at it cause I get intimidated by anything too wordy.

2007-06-10 06:40:00 · 9 answers · asked by ? 1

The diameter of one bicycle wheel is 28 inches and its spokes run from the hub (or center) to the edge of the rim. The diameter of another bicycle wheel 21 inches. What is the difference in inches between the length of the spokes of the two wheels?

2007-06-10 06:38:24 · 8 answers · asked by Lee H 1