Mathematics - 23 November 2007

There is a right angled triangle which has cathetes of 5,0 cm and 15 cm. You have to place a square inside this triangle so that two sides of the sqare will go along the two cathetes. And the tip of the square would touch the hypothenuse.

Question: How long is one side of the square ???

I know the answer, but I have no idea how to calculate this.

2007-11-23 23:51:31 · 3 answers · asked by in fact 1

2007-11-23 22:59:24 · 9 answers · asked by Anonymous

2007-11-23 22:58:22 · 11 answers · asked by Anonymous

2007-11-23 22:56:40 · 9 answers · asked by Anonymous

2007-11-23 22:55:25 · 9 answers · asked by Anonymous

2007-11-23 22:53:53 · 14 answers · asked by Anonymous

where n~2=n*n;

2007-11-23 22:45:31 · 4 answers · asked by anacond14 2

2007-11-23 22:34:48 · 2 answers · asked by Anonymous

what's the exact size pls?

2007-11-23 21:44:58 · 3 answers · asked by Rhomeo H 1

I'm looking for a place to discuss things with people, not just an informational website (although if you know a good one of those, put it up too :)

2007-11-23 21:44:06 · 1 answers · asked by Anonymous

2007-11-23 20:14:29 · 12 answers · asked by Sidney Shane D 1

2007-11-23 20:12:59 · 11 answers · asked by Sidney Shane D 1

2007-11-23 20:10:03 · 7 answers · asked by Sidney Shane D 1

2007-11-23 20:08:02 · 10 answers · asked by Sidney Shane D 1

1. Annual sales of sparkling water in the U.S. in the period 1993-2003 could be approximated by
s(t)= -1.3t^2+4t+160 million gallons

(3
where t is the time (in days) since the egg was laid (an egg will typically hatch at around t=28). Use the model to estimate the following (give the units of measurement for each answer and round all answers to two significant digits):
a. The daily oxygen consumption 20 days after the egg was laid
b. The rate at which the oxygen consumption is changing 20 days after the egg was laid
c. The rate at which the oxygen consumption is accelerating 20 days after the egg was laid.

2007-11-23 20:07:07 · 3 answers · asked by Moss212 2

What is the smallest possible area of an isosceles triangle that is circumscribed about a circle of radius r? (The circle is inside the triangle). No numbers are given.

2007-11-23 20:06:42 · 6 answers · asked by Anonymous

(this is bmi of female caucasian vs. korean)
caucasian =21.33
korean= 19.7

2007-11-23 20:06:39 · 2 answers · asked by Becca H 1

We know from basic differential calculus that:
lim_{h → 0} [ f(x + h) - f(x) ] / h

But I have also seen the variations:
lim_{h → 0} [ f(x) - f(x - h) ] / h
lim_{h → 0} [ f(x + h) - f(x - h) ] / 2h

Do these variations hold any practicality? Why might one ever prefer one method over the other?

If I am ever forced to use this limit evaluation to determine a derivative, I am sure the first, primary one would suffice.

2007-11-23 19:42:53 · 1 answers · asked by Anonymous

13.The major difference between a calculator and a computer, when performing calculations, is that a
A. Calculator is faster but needs more human assistance.
B. Calculator is slower and needs more human assistance.
C. Computer is faster but needs more human assistance.
D. Computer is slower but needs more human assistance.
C--Is not correct.

2007-11-23 19:24:54 · 8 answers · asked by Anonymous

verifying trigonometric identities

2007-11-23 19:21:50 · 6 answers · asked by tobi 1

2007-11-23 19:14:45 · 3 answers · asked by tobi 1

Solve by completing the square

x^2-14x+45=0

2007-11-23 19:02:00 · 8 answers · asked by babby_bear30_99 1

2007-11-23 18:55:53 · 3 answers · asked by Justin Reyes 5

Solve by using the quadratic formula.

x^2=7x+6

2007-11-23 18:54:13 · 6 answers · asked by babby_bear30_99 1

If 1, w and v are the cube roots of unity prove that:
(a) w = conjugate v = v^2
(b) w + v = -1
(c) (w)(v) = 1

thanks

2007-11-23 18:44:49 · 4 answers · asked by BeyondLimitz 1

1) A freshly brewed cup of coffee has temperature 95degrees in a 20degree room. When its temperature is 70degrees, it is cooling at a rate of 1degree per minute. When does this occur?

2) If $500 is borrowed at 14% interest, find the amounts due at the end of 2 years if the interest is compounded (i) annually, (ii) quarterly, (iii) monthly, (iv) daily, (v) hourly, and (vi) continuously.

show work plz..thanks! =)

2007-11-23 18:02:34 · 3 answers · asked by Anonymous

i want to know the complete steps of finding square root of any number withot the help of calculator.

2007-11-23 17:53:11 · 11 answers · asked by momo 1

2007-11-23 17:51:05 · 8 answers · asked by Anonymous

Im usually good at math but its boring now and im hating it...answer this!

Add Arithmetic symbols on the left of the equal signs , between the numbers to make the equation true.

1 2 3 4 5 6 7 8 9=100

2007-11-23 17:38:58 · 4 answers · asked by i like saying hi 6

2007-11-23 17:31:59 · 3 answers · asked by Anonymous