Science & Mathematics - 13 September 2007

how do you solve this and put it on a number line


-5
----t > 24 how to you solve that its 5/8 t >24 please help and how do you put it on a number line
8

2007-09-13 11:50:46 · 2 answers · asked by cutie2007 2 in Mathematics

A point is moving with constant speed alonga circle of radius 3 shown in the figure. When T=0 the point is at A and moves counterclockwise. Find the equation of position of the projection of this point over the horizontal diameter AC x(t) and sketch the graph corresponding to the interval of time from the start until it goes around the circumference two times. Consider that the point takes 2pi seconds to get from A to C.




C·················································l····································o A

2007-09-13 11:50:32 · 1 answers · asked by marce 1 in Engineering

2007-09-13 11:48:33 · 2 answers · asked by Alexander 6 in Physics

2007-09-13 11:47:18 · 4 answers · asked by Anonymous in Earth Sciences & Geology

2007-09-13 11:47:14 · 4 answers · asked by ~USA~ 2 in Chemistry

2007-09-13 11:47:02 · 5 answers · asked by Colleen C 2 in Chemistry

If you had the opportunity to travel back in time, what period would you like to visit and why?

2007-09-13 11:46:35 · 13 answers · asked by Tango 7 in Astronomy & Space

Evaluate the fuctions at the given values of the idenpendant variables. Simplify the results.

f(x) = 1 / Sqrrt(x-1)


f(x) - f(2)
-----------
x - 2

Please give a detailed explanation.
Thanks :)

2007-09-13 11:44:39 · 2 answers · asked by Matthew K 2 in Mathematics

ODE solution

2007-09-13 11:43:13 · 2 answers · asked by mikey6542 1 in Mathematics

2007-09-13 11:42:09 · 7 answers · asked by 2 cute 4 u 1 in Mathematics

I understand how to do the basic common denominator problems like the last one:

5/(x+2)-9/(x+2)

But the real problem is when the numbers added to x are different, that makes the problem more complex like this one right here:

3/(x+2)=2/(x+5)

What would be the first few steps in solving this problem?
(Please don't solve the whole thing, just show how to get rid of the fractioned x)

thanks again!

2007-09-13 11:41:15 · 2 answers · asked by darthchaluupa 2 in Mathematics

A. Radius = 15m

B. Diametre = 7m

2007-09-13 11:40:01 · 4 answers · asked by Anonymous in Mathematics

I am having trouble with standard notation and product form. Please explain and show me. I'll vote you for best answer.

2007-09-13 11:38:02 · 4 answers · asked by Anonymous in Mathematics

If anyone could explain how the following is done, it would be greatly appreciated!

Suppose that there is a tennis tournament with 32 players. Players are matched in a completely random manner, and we assume that each player always has probability 1/2 of winning a match. What is the probability that two given players meet each other during the tournament?

2007-09-13 11:36:26 · 2 answers · asked by Anonymous in Mathematics

2007-09-13 11:34:45 · 2 answers · asked by Anonymous in Weather

I know this telescope is cheap and most people would recommend saving some cash to buy a better one, but I am just doing a small homework assignment that requires me to observe and sketch one or two of Jupiter's moons. Will this telescope get the job done?

2007-09-13 11:33:03 · 7 answers · asked by lenny_talarico 2 in Astronomy & Space

2007-09-13 11:32:33 · 5 answers · asked by Anonymous in Weather

2007-09-13 11:28:13 · 7 answers · asked by Anonymous in Chemistry

Problem number 1: A number consists of two digits followed by the digit 4. A second number starts with the digit 4 followed by the same two digits as used in the first number.

The equation for this problem would be 10x + 4 (first number) and (400 + x) - 400 (second number).

So the question is, if the second number is as much greater than 400 as the the first number is smaller than 400, what is the first number?

Problem number 2: Sea water contains 5% of salt (by weight). How many kg of fresh water should be added to 40 kg of sea water for the latter to contain 2% salt?

Problem 3: The length of a rectangle is increased by 20% while its with by 10%. What percentage increase is there in its area?

Problem 4: Emily wishes to mix two types of tea. Type A costs $0.36 per kg while type B costs $0.50 per kg. She then sells the mixture at $0.46 per kg and makes a profit of 20% of the total cost. What percentage of the total mixture is made up of type A?

2007-09-13 11:28:12 · 3 answers · asked by Juh-cel. 1 in Mathematics

Why is it better to hold the hammer with the handle down rather than with the head down?

2007-09-13 11:27:50 · 9 answers · asked by Anonymous in Physics

can u please help w/ some math? oh and can u show how u did it so i understand? thx.
btw ^ means exponent/ to the power of. i think..

1. 225/(-3)(-5) = ?

2. -2 x -6 + 4 x -5^2 = ?

3. 2/5 divided by - 1/2 = ?

4. 3/4 / (- 3/7) = ?

thats all! thanks and remember-10 points =)

2007-09-13 11:24:45 · 4 answers · asked by Anonymous in Mathematics

and the two balls were dropped from height 10m on concrete floor. During entire fall tennis ball remained on top of rubber ball.

Ignoring air resistance and other losses of energy, to what altitude will the tennis ball bounce?

2007-09-13 11:23:59 · 1 answers · asked by Alexander 6 in Physics

1. Given the function v(t) is

(1/2)t when t is greater than zero and less than or equal to four

2 when t is greater than four and less than or equal to six

-t+8 when t is greater than six and less than or equal to eleven

3t-36 when t is greater than eleven and less than or equal to twelve

Find the distance function f(t) that corresponds to v(t).




2. Let f(x) = (2x + 3)^(1/2). Simplify
(f(x + h) - f(x))/h
and evaluate your simplified answer when h = 0.





3. Find (using any method you can think of) cos(x) = x.




Can you give me an answer and maybe an explanation. Thanks so much.

2007-09-13 11:22:41 · 1 answers · asked by Need Help 1 in Mathematics

6 * 84.3

and

54.5 * 3.7

2007-09-13 11:21:27 · 1 answers · asked by sillyboys_trucksare4girls 2 in Chemistry

In a certain right triangle, the two sides that are perpendicular to each other are 4.30m and 7.40m. What is the length of the third side of the triangle?

2007-09-13 11:20:50 · 8 answers · asked by Anonymous in Physics

alright- its not that crazy, just a little unusual to me and I can't quite figure it out.

y= 4 - 2x - x^2

Thanks!

2007-09-13 11:17:48 · 3 answers · asked by Sarah 2 in Mathematics

i'm "helping" my little brother with his science homework and i'm stuck on this question... gosh i feel stupid! haha

2007-09-13 11:15:31 · 5 answers · asked by Anonymous in Weather

2007-09-13 11:13:21 · 2 answers · asked by scrocks3 2 in Mathematics

A mountain climber stands at the top o a 59.0 meter cliff hanging over a calm pool of water the climber throws two stones vertically 1.7 seconds apart and observes that they cause a single splash when they hit the water the first stone has an initial velocity of +2.3m/s.
what will be the velocity of the first stone be at the instant both stones hit the water? answer in m/s.

how long after the release of the first stone will the tow stones hit the water? answer in units of seconds.

What is the initial velocity of the second stone when it is thrown? answer in units of m/s

what will the velocity of the second stone be the instant both stones hit the water? answer im m/s

2007-09-13 11:12:41 · 1 answers · asked by contraseña 1 in Physics

from the bottom of their building. They estimate the balcony is 50 m high and wonder how fast they would have to jump horizontally to succeed in reaching the pool. What is your answer?

2007-09-13 11:12:34 · 1 answers · asked by Anonymous in Physics