Science & Mathematics - 27 January 2007

can 120 be expressed as the sum of two positive integers, one of which is divisible by 11 and the othe by 17?


if yes, show it in algebra way please..

thanks

2007-01-27 13:59:48 · 7 answers · asked by Anonymous in Mathematics

2007-01-27 13:58:31 · 7 answers · asked by blah b 1 in Physics

1. What information about an arithmetic series is need to find its sum?
2. Explain how to use summation notation to express the following series: [2+4+6+8+10+12]
3. In how many different ways can you represent the series [2+4+6+8]?Explain.

2007-01-27 13:58:20 · 1 answers · asked by Anonymous in Mathematics

I have a project for physics class to make a slingshot airplane using only glue, balsa wood, and tissue paper. we have to make the slingshot as well as the airplane. How do i get started? what is the best design? How do i make a slingshot? (only materials= tissue and balsa wood and tissue paper) The objective is to get the plane to fly the farthest.

2007-01-27 13:57:35 · 1 answers · asked by π∑∞∫questionqueen 3 in Mathematics

I'm asked to prove that:

grad x grad * scalar = 0

But I can't seem to get it to work out. Nothing seems to cancel out in my determinant. Anybody have any suggestions or ideas where I might be going wrong? Maybe a website that could help?

Its hard for me to type out the entire determinant I have here since there is no ASCII symbol for the partial derivative.

2007-01-27 13:57:01 · 1 answers · asked by JoeSchmo5819 4 in Mathematics

like, can you freeze them, then thaw them back to their original temp and have them survive and grow from then on? if not what other statogies are there if any?

2007-01-27 13:56:39 · 4 answers · asked by Anonymous in Biology

I know that this is bizzare>>>but do you think that aliens are real? What about the alien abduction stories? And>>how do I save myself from being abducted?

2007-01-27 13:56:06 · 6 answers · asked by .oO Day Dreamer 1 in Astronomy & Space

in relation to carbon dioxide forcing us to take a breath

2007-01-27 13:54:11 · 5 answers · asked by Anonymous in Biology

how do you solve to find the value of x, when it's an exponent? What would "x" be if, 4^x=1783 ? and while I'm on it...what is the derivative of f(x)= 15sin(x)-4(tan) ?

2007-01-27 13:53:54 · 5 answers · asked by nyadastar 2 in Mathematics

Suppose you are collecting the tickets for the school play. You collect 595 tickets. Admission is $5 for adults and $3 for students. The total amount of the money from ticket sales is $1951. You want to figure out how many adult tickets were sold.

a. Write a system of equations, letting a represent the number of adult tickets and a s represent the number of student tickets.

b. use the system to determine how many adult tickets were sold.

c. solve the system of equations by a different method.
d. do you get the same solution with each method? why or why not?

2007-01-27 13:53:03 · 6 answers · asked by jenjen 3 in Mathematics

im doing an experiment to see which freezes faster, hot or cold water, but on my rubric it says that i have to list the constants in my experment. In my book the definition of a constant is -a variable that does not change when other variables change- i put 3 cups in the freezer, one with hot water, one with cold water, and one that is niether hot nor cold(this is the control), but i dont know what the constant or constants in my experiment are, can u please tell me.

2007-01-27 13:52:43 · 8 answers · asked by blue 2 in Biology

I'm a little confused. since the derivative of a function is equal to the slope of the tangent line, then what it is if is not a line? for example the derivative of x^3 is 3x^2. which is a parabola. so what does this signify?

2007-01-27 13:52:38 · 7 answers · asked by π∑∞∫questionqueen 3 in Mathematics

2007-01-27 13:51:09 · 2 answers · asked by Zefram 2 in Astronomy & Space

how can the north, south, east west make sense. To me it only make sense on the way the map is illustrated. otherwise i dont know the concept of eastern or western countries

2007-01-27 13:50:31 · 14 answers · asked by Anonymous in Earth Sciences & Geology

2007-01-27 13:45:44 · 6 answers · asked by Anonymous in Astronomy & Space

Do you think the bottom line is love or money?

2007-01-27 13:45:02 · 9 answers · asked by Gypsy Gal 6 in Physics

2007-01-27 13:43:58 · 9 answers · asked by Yousaf 1 in Astronomy & Space

2007-01-27 13:42:36 · 7 answers · asked by Anonymous in Zoology

∫c (sinx+cosy)ds, where c is the line segment from (0,0) to (pi, 2pi)

2007-01-27 13:40:51 · 2 answers · asked by Astalav 1 in Mathematics

I need help figuring this out...

Prove that there are no non-zero integers a, b such that a^2 = 2b^2. Use the Fundamental Theorem of Arithmetic.

Thanks to anyone that can help me out a little...

2007-01-27 13:40:00 · 6 answers · asked by yogastar02 2 in Mathematics

How can these benefits personally help you?

2007-01-27 13:38:47 · 4 answers · asked by Anonymous in Engineering

Another user brought this to my attention.

2007-01-27 13:37:29 · 3 answers · asked by Anonymous in Mathematics

2007-01-27 13:37:13 · 6 answers · asked by wiggafree 1 in Mathematics

A constant net force of 410 N is applied upward to a stone that weighs 32 N. The upward force is applied through a distance of 2.0 m, and the stone is then released. To what height, from the point of release, will the stone rise?

Please help me with this problem.
I'm having trouble solving it.

I asked this question once before, but I was confused with the answers received.

2007-01-27 13:36:09 · 2 answers · asked by swimmertommy 1 in Physics

2007-01-27 13:36:00 · 3 answers · asked by Matthew K 2 in Geography

This guy ( http://cynicalpsychic.blogspot.com/ ) has a gag website. I think it's a gag anyway. And he said there would be an earthquake in the pacific rim within the next 6 months and a week after he posted there was a quake. What were his chances? Mathematically speaking.

2007-01-27 13:33:19 · 4 answers · asked by Bo D 1 in Earth Sciences & Geology

How come we haven't found it out yet, or is it just our perception on things, because we always ask "What came before that"? AND can time itself be disproved, because all the past is is our memory, and the future hasn't happened yet, and if it had no beginning how could it exist? To anyone who says there was a beginning of time and time does exist, well how do you know there was a beginning if you don't know when it was, if it at all did begin.

2007-01-27 13:29:56 · 3 answers · asked by Anonymous in Physics

2007-01-27 13:29:50 · 1 answers · asked by abcdefghijk 4 in Physics

this is 4 my biology project

2007-01-27 13:25:37 · 4 answers · asked by Anonymous in Biology

Everyone's had to stop for a troupe of ducks crossing the road at some stage or another. How can they do it so bravely- or is it carelessness or indifference?

2007-01-27 13:25:13 · 7 answers · asked by Link 4 in Biology