Mathematics - 29 June 2007

Does anyone know how to get the range

f(x) = 3Sin(2x)?

the answer is [-3,3] but I don't know how to get there.

Thanks

2007-06-29 09:24:54 · 3 answers · asked by Anonymous

2007-06-29 09:20:23 · 15 answers · asked by in love 1

2007-06-29 09:07:02 · 5 answers · asked by Russel 1

the directions are: factor the following completely over the set of real nmbers
i'm going to write it out partly in words

27b to the 3rd power minus 64
plz show ur work

2007-06-29 08:39:06 · 3 answers · asked by Anonymous

I get an answer between 23 and 24

2007-06-29 08:29:22 · 4 answers · asked by Dave 4

In how many different ways can you deal out 5 red cards if you have a standard deck of 52 cards. I got 13!/8! but that is wrong because the answer is 7,893,600.

Thanks for the help!

2007-06-29 08:25:20 · 5 answers · asked by Icobes 2

1. http://i209.photobucket.com/albums/bb248/pielover757/word1.jpg

2. http://i209.photobucket.com/albums/bb248/pielover757/word2.jpg

3. A box contains 4 blue chips and 5 black chips. If two chips are drawn at random with REPLACEMENT, what is the proability that both will be blue?

4. http://i209.photobucket.com/albums/bb248/pielover757/word3.jpg

2007-06-29 08:12:33 · 3 answers · asked by Asgardfanofpie 1

is there any book which will guide me in detail about the fundamentals of calculus? this is very important to me. how do i learn and understand this subject? please help!!!!!!!

2007-06-29 07:31:48 · 7 answers · asked by :) 1

explain how a number line can be used to solve equations. Do you find using a number line to be a good strategy to help you solve equations? Why or why not?

2007-06-29 07:23:35 · 2 answers · asked by ViVI 2

20x^8 + 12x^4
____________
4x^2

2007-06-29 07:01:34 · 10 answers · asked by randall_gilmore 1

How many combinations of 8 cent and 15 cent postcards can be purchased by spending
exactly $4.80? List each combination.

2007-06-29 06:11:51 · 7 answers · asked by Anonymous

I have two equations I am stuck on. Can someone help me and explain a little how I might do these?
1. let f(x)=x^2+3x+2, find f(0)
2. let f(x)=-x^3-x^2+2x-8, find f(-1), f(0), f(2)
Thank you so much

2007-06-29 06:04:59 · 7 answers · asked by Tim's Girl 1

2007-06-29 06:00:47 · 1 answers · asked by deannahndrsn 2

[Grab a calculator - you won't be able to do this one in your head…]

1. Key in the first three digits of your 7-digit phone number (NOT the area code);

2. Multiply by 80;

3. Add 1;

4. Multiply by 250;

5. Add the last 4 digits of your phone number;

6. Add the last 4 digits of your phone number again;

7. Subtract 250;

8. Divide number by 2.

Did you get your phone number?

How does this work???

2007-06-29 05:43:35 · 16 answers · asked by Anonymous

2007-06-29 05:41:45 · 10 answers · asked by Eric E 1

2007-06-29 05:40:15 · 3 answers · asked by Eric E 1

Just a little confused here and unsure weather variance is the square root or the square of a standard deviation?

2007-06-29 05:38:29 · 7 answers · asked by Newlywed 1

Anne Beck recently took over a beauty supply store. Her predecessor always ordered shampoo in quantities of 100 units. Anne is reevaluating this policy. Based on her analysis, the cost to place each order is $35 and the holding cost is $8 per shampoo bottle per year. The annual demand for this product is 2500 bottles. Should Anne change the current order policy and, if so, how much can she save?
I'm not sure my answer is $92
Q=√2x2500x35/8=√21875=148
TC= 2500/148 (35)+ 148/2 (8)= 591+ 592=1183
TC=2500/100 (35)+ 100/2 (8)=875+400=1275
1275-1183=92

2007-06-29 05:33:24 · 5 answers · asked by Anonymous

Density=mass/volume(D=m/v)
V=pieR^2H

the density of a sample is 0.023 g/cm^3. the mass of the sample is 75g. what is the volume of the sample.

2007-06-29 05:26:26 · 3 answers · asked by Anonymous

Density=mass/volume(D=m/v)
V=pieR^2H


the density of a sample is 5.8 g/cm^3. the sample fills a cylindrical container whose height is 10.2 cm and whose radius is 4.3 cm. find the mass of the sample.

2007-06-29 05:23:11 · 9 answers · asked by Anonymous

formulas=Density= mass/volume(D=M/V)
V=pieR^2H

a rectangular solid is 10.0 cm long, 8.1 cm wide, and 2.7 cm tall. the mass of the rectangular solid is 36.0 g. whats its density?

2007-06-29 05:19:01 · 5 answers · asked by Anonymous

2007-06-29 05:15:17 · 12 answers · asked by peaches 1

inequality symbol then the number.
3(4x-5)<9

2007-06-29 05:08:30 · 3 answers · asked by peaches 1

2007-06-29 04:50:05 · 8 answers · asked by wilbert c 1

5a^2/2 divided by 10b^2/3a^2



x+6/4 = 2x+3 / 3 - 2


solve for x: x^2 + x = 32 - 3x

2007-06-29 04:29:33 · 2 answers · asked by Anonymous

I've always heard that this magic number e is ever-present in nature, that there's something fundamental and primal about it, but I have never understood why. I'd like to understand e, understand y = e^x, and understand y = ln x in the same way I understand pi (which, by the way, I conceptualize as "the ratio of circumference to diameter"). The best answer will give me some simple concept like that (if such a thing is possible) and also explanations and examples. Thank you in advance for your efforts!

2007-06-29 04:01:13 · 4 answers · asked by Timothy H 4

2007-06-29 03:34:20 · 9 answers · asked by megha m 1

what is the connection of maths and physics. also applications of conic section, vector quantities and 3d dimensional figures. last date is 9 july. earlier it was 28 june but its extended. i need this urgently. thanx.

2007-06-29 03:28:56 · 4 answers · asked by Princess 1

have this question for a chem class. Here is the question.

The bulk of human food is provided by eight grains (wheat, rice, corn, barley, oats, sorghum, millet and rye). Current world grain production is about 1.8 Billion metric tons, which is enough to feed about 8.1 Billion people. Assume for the sake of this problem that grain is the only food we eat. If the world's production of food is increasing linearly at 1.4% per year, how many people will be able to be fed at the time the world's population has doubled?
A. 10.0 Billion
B. 14.2 Billion
C. 620 Billion
D. I think it should be more than 12 Billion, but I don't get answer B or C

E. I think it should be less than 12 Billion but I don't get answer A

The doubling time is 50 years. Now I have a formula that gave me how much food will be produced. The answer is 3,060,000,000. Now I need to figure out how to convert that to how many people that number can feed. Any ideas? Thaaanks.

2007-06-29 03:26:24 · 1 answers · asked by Andy C 2

See the Y!A question related to this:

http://answers.yahoo.com/question/index?qid=20070628070444AAy79OA&r=w#RZcsX2S8Vjcv9ccfz0VGGJTmyzS0qZbfHvcQ1jHuYj9ZdncEPbLZ

What is the most rigorous proof can you offer that infinity + 1 = infinity, without basically saying in so many words, "It just is!" If you subtract infinity from both sides, you should end up with 1 = 0, wouldn't you?

2007-06-29 03:20:16 · 13 answers · asked by Scythian1950 7