Mathematics - 24 October 2007

Find the exact value of the following expression, if possible.

tan-1 (tan 2π/3)

I need help with this problem. Correct answer gets 10 points.

2007-10-24 10:09:58 · 3 answers · asked by Anonymous

2007-10-24 10:09:54 · 1 answers · asked by Hamid K 1

2007-10-24 10:06:14 · 6 answers · asked by maor.kramer 3

In our book we have to write an exspression for each of the following

9.the sum of an even interger and two times the next even interger

10. the sum of 1/4 of an interger, 1/5 of the next interger, adn 1/2 of the following interger.


Please Help Thanks

2007-10-24 10:05:27 · 4 answers · asked by / 3

2007-10-24 10:01:48 · 3 answers · asked by Smart S 2

if 5d-2g=9, how do we isolate g...my algebra teacher didn't really explain it...

2007-10-24 09:59:06 · 8 answers · asked by Anonymous

I have the answer ( arctan(x^2)/2 ) but I would like to know the steps to solving it.

2007-10-24 09:56:14 · 3 answers · asked by thes_a_p_s 1

I need help with the following proof:

If the domain of a continuous function is an interval, show that the image is an interval.

This doesn't seem like it should be that hard, but I'm having trouble putting it into "math" terms. Thanks.

2007-10-24 09:51:31 · 1 answers · asked by mobaxus 2

Prove:
sin (pi-x)= sin (x) using the addition identity

And
how to find (without a calculator):
sin 40 degrees and cos 40 degrees if sin 20 degrees is approximately equal to 3 and cos 20 degrees is approximately equal to .9


I don't need the answer just a little bit about how to do the problems. Thank You

2007-10-24 09:50:17 · 3 answers · asked by sunshinegirl052390 2

2007-10-24 09:48:23 · 0 answers · asked by Elizabeth H 2

also can be said as: y is less than or equal to x.

2007-10-24 09:45:27 · 6 answers · asked by Nicholas L 1

Can someone please give me all the factors you can think of for the number 1296 ? Your feedback is greatly appreciated.

2007-10-24 09:42:57 · 2 answers · asked by Anonymous

2007-10-24 09:42:22 · 7 answers · asked by Anonymous

Graph f, g, and h in the same rectangular coordinate system for
0 < or equal than x < or equal than 2π. Obtain the graph of h by adding or substracting the corresponding y-coordinates on the graphs of f and g.

f(x) = sin x, g(x) = cos2x, h(x) = (f-g)(x)

I need help with this problem. Correct answer gets 10 points.

2007-10-24 09:41:54 · 1 answers · asked by Anonymous

Find the domain of f/g
Give answer in interval notation

2007-10-24 09:38:48 · 1 answers · asked by Anonymous

Sneaky the gerbil won the annual Gerbil Derby in Biology 101, paying $1.70 on a dime bet. What are the payoff odds against a Sneaky win?

2007-10-24 09:31:11 · 2 answers · asked by tessa 1

2007-10-24 09:30:46 · 2 answers · asked by Anonymous

Fill in the blanks.

1. The point of intersection of two sides of a polygon is called a_______.

2. A line segment(not a side) connecting two vertices of a polygon is called a________.

3. A polygon with all sides the same length and all angles the same measure is called a__________polygon.

2007-10-24 09:29:40 · 4 answers · asked by hotmama928 1

Solve the following equation for v
S=-1/2gt^2+vt

(I got V=s(-1/2g+2)
Am I right?

2007-10-24 09:26:23 · 3 answers · asked by hello1 2

I'm so sleepy now I cant remember if I'm supposed to round up or down?

2007-10-24 09:07:26 · 5 answers · asked by G's Random Thoughts 5

x/6 its a fraccion

again this is the equation x/6 = 11

it,s say multiply both sides by 6???

the result is x/6 = 25

why 25 ???

and can you explain me if you know what is the process to get 25

thank you so much god bless you

2007-10-24 09:06:48 · 4 answers · asked by Anonymous

Of which categories...Real,Irrational, Rational, Whole, Integer, Natural

2007-10-24 09:00:48 · 7 answers · asked by hello1 2

Given subspaces H and K of a vector space V, the sum of H and K, written as H + K, is the set of all vectors in V that can be written as the sum of two vectors, one in H and the other in K; that is,
H + K = {w : w = u + v for some u in H and some v in K }

a. Show that H + K is a subspace of V.
b. Show that H is a subspace of H + K and K is a subspace of H+ K.

I am completely lost on this problem so any information on a solution or how to solve it would be greatly appreciate. Thanks a lot.

2007-10-24 08:53:20 · 3 answers · asked by swierczawack 2

I am so confused on how to do this :S

Among U.S. cities with a population of more than 250,000 the mean one-way commute to work is 24.3 minutes. The longest one-way travel time is New York City, where the mean time is 38.3 minutes. Assume the distribution of travel times in New York City follows the normal probability distribution and the standard deviation is 7.5 minutes.

What percent of the New York City commutes are for less than 30 minutes?

What percent are between 30 and 35 minutes?

What percent are between 30 and 40 minutes?

2007-10-24 08:52:34 · 1 answers · asked by Anonymous

What is 1+1 equal

2007-10-24 08:49:40 · 6 answers · asked by Anonymous

Suppose Bob and Nick are playing a game. Bob rolls a die and continues to roll until he gets a 2. He keeps track of all the outcomes of the rolls. He calls the sum of the rolls X. Nick does the same thing as Bob, only he keeps rolling until he gets a 5 and he calls the sum of his rolls Y. At the end of the game, Bob pays Nick Y dollars and Nick pays Bob X dollars. Does one of the boys have an advantage over the other? Which one?

2007-10-24 08:48:49 · 12 answers · asked by cornzxo 1

A Norman window has the shape of a rectangle surmounted by a semicircle. A norman window with perimeter 30 ft is to be constructed.

Find a function that models the window.
Find the dimensions of the window that admits the greatesr amount of light.

The base of the window is x

2007-10-24 08:46:12 · 2 answers · asked by Pipos 1

If a square mat has 64 squares and each are 64m squared, what is the perimeter?

2007-10-24 08:34:15 · 5 answers · asked by bleedinglove_x 3

2007-10-24 08:19:21 · 9 answers · asked by james c 1

6 × 42 + 6 - (5 + 10)

How would I get the answer?

2007-10-24 08:19:14 · 18 answers · asked by Anonymous