Mathematics (Science & Mathematics) - 11 December 2007

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find work of the wagon...?

A wagonnis being pulled by a rope that makes an angle of 40degrees with the ground. If the tension in the rope is 50 N, how much work is done on the wagon in pulling it a distance of 70 m?

2007-12-11 07:09:29 · 2 answers · asked by Anonymous

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whats the answer to sin(2x)+1= Cos(2x)?

2007-12-11 07:08:24 · 4 answers · asked by Anonymous

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How to find the vector parallel to two planes?

2007-12-11 07:02:26 · 6 answers · asked by Anonymous

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Solve for the indicated variabley-b/2= m, for b?

2007-12-11 06:46:55 · 5 answers · asked by Jessica A 1

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Settle a simple algebra problem please.?

How much of a 20% copper alloy should be mixed with 200 oz, 50% copper alloy in order to get an alloy of 30%?

2007-12-11 06:41:14 · 3 answers · asked by rspringstead2003 1

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Why is 650 the sum of the first 25 even numbers?

2007-12-11 06:33:53 · 7 answers · asked by Jonathan S 2

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What is the sum of the first 25 even numbers?

2007-12-11 06:26:43 · 34 answers · asked by Jonathan S 2

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Solve this problem?

29/50 + 11/50
If there is any reducing involved you may do so, if not leave it as it is.

2007-12-11 06:12:04 · 4 answers · asked by - 1

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can you help me with some algebra?

factor completely:

1. 9a^2 - 100

2. 2a^4 - 18a^2

3. t^2 -(t - 1)^2

2007-12-11 06:12:04 · 4 answers · asked by Anonymous

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exponential growth and decay help?

Two bacteria colonies are cultivated in a laboratory. The first colony has a doubling time of 2 hours and the second a doubling time of 3 hours. initially, the first colony contains 1000 bacteria and the second colony 3,000 bacteria. At what time t will sizes of the colonies be equal??

I'd appreciate any help. Thanks.

2007-12-11 06:06:07 · 5 answers · asked by yefimthegreat 1

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A farmer has 11 cows. How does he share 1/2, 1/4 and 1/6 between 3 people? thanks.?

My daughters teacher came up with the question for her maths. I haven't got a clue how to work it out , help please!!

2007-12-11 06:03:28 · 12 answers · asked by Anonymous

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Find the center (H,K) and radius R of the circle (x^2+y^2-10x+10y+50=49?

2007-12-11 06:03:02 · 2 answers · asked by Ken B 1

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how much is 100 million pennies in dollars?

2007-12-11 06:01:59 · 39 answers · asked by keithlrichardson 2

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If the diagonals of a rhombus are 13 cm. and 8 cm. long, find the area of the rhombus.?

A) 21 sq. cm
B)52 sq. cm
C)42 sq. cm
D)104 sq. cm

2007-12-11 06:00:09 · 2 answers · asked by Anonymous

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How do you multiply (4-square root of seven)times (3+2square root of seven)?

2007-12-11 05:58:25 · 3 answers · asked by calvin l 1

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how is 7=sept?

I was solving the puzzles at
http://puzzlingpage.googlepages.com/1.ht...
and i got stuck on 7th page...
somehow sept is related to 7, i want to know what will be 8 in the same way

2007-12-11 05:57:50 · 8 answers · asked by dheeraj r 1

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How do i solve this pre calc log arithm problem: log x - log(8-5x) = 2?

drawing a blank on this problem, if you can explain how to do it that would be much appreciated.
thanks

2007-12-11 05:54:18 · 6 answers · asked by chirch 1

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If you had two coins totalling 25p, one of the coins was not a 5p piece, what were the coins?

2007-12-11 05:53:13 · 11 answers · asked by linda a 1

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is ln 0 defined? if so what is it equal to?

2007-12-11 05:48:32 · 2 answers · asked by Raj 1

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math problem polynomials?

what number must be added to 9x^2 + 9x to form a perfect square? please show work/ explain it.

2007-12-11 05:48:08 · 3 answers · asked by pinkduck000 2

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integrals using substution?

evaluate the integral of

sec^2xtanxdx, u=tanx

can someone explain how to do this?

I'd appreciate any help.

Thanks.

2007-12-11 05:44:35 · 2 answers · asked by Anonymous

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math problem?

1. (2ab^2)(-3abc^2)(5a^2c)
2. 1/x+3 - 2x/ x^2+6x+9
3. 5x^2/-5x

2007-12-11 05:41:36 · 2 answers · asked by brock.young 1

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Evaluating Definite Integral?

Integrate from 0 to 1 (x^2)(sqrt5x+6)dx

I am having trouble with u substitution, if anyone could help me it would be appreciated. Thanks

2007-12-11 05:40:57 · 2 answers · asked by Anonymous

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Could someone translate grams to fractions for me? ex: 1/8=3.5?

I'm bad with translating grams to fraction form could someone give me a list? Thank you

2007-12-11 05:39:59 · 4 answers · asked by kareem7rev 1

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geometry help?

Find the perimeter of the triangle shown in the figure.

Note: The triangle shows the following numbers on each side...
top-4; left-square root 5(negative sign in the middle) and sqare root 3...right-square root 5(positive sign in the middle) and square root 3...PLEASE HELP!

2007-12-11 05:37:03 · 2 answers · asked by God Bless America!~ 4

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I have a question on this math problem...?

Ok i do not want the answer or anything because i want to figure out how to do this on my own. Ok i am going to show the question below and can someone please show me/ tell me how to solve it? Thank you sooo much!!!

Find the perimeter of Triangle ABC if AB = 1/6 in., BC = 2/3 in. and AC = 1/2 in

also if you know of a fast easy way to solve it, i would appreciate it if you could tell me how ;-)

2007-12-11 05:36:06 · 3 answers · asked by Anonymous

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