Science & Mathematics - 18 January 2007

2007-01-18 11:43:13 · 8 answers · asked by buffalo chip 2 in Astronomy & Space

2007-01-18 11:43:11 · 3 answers · asked by Anonymous in Weather

I need to check my daughters Homework!

13. 12p+6-3p

14. 9+3k=2k-12

15. fraction 5/6t+4=2-1/6t

18. 3(z-2)+6=5(z+4)

20. 28-14z=negative24+12z

23. fraction u/0.3=4u+6.28

25. 0.3x-15=0.2x-5

2007-01-18 11:42:59 · 8 answers · asked by Anonymous in Mathematics

A. 24.
B. 3.6 x 10 to the 23 power.
C. 6.02 x 10 to the 23 power.
D. 48.

2007-01-18 11:41:28 · 2 answers · asked by Noor 3 in Chemistry

there is a right angle triangle
A to C is 15
A to B is 20
and a line going through the middle of the triangle from A to D is 17
what is the length of DB?

2007-01-18 11:41:24 · 1 answers · asked by devincr 1 in Mathematics

2007-01-18 11:40:23 · 4 answers · asked by Kara T 1 in Chemistry

d + (-7.03) = 0.98

2007-01-18 11:39:23 · 5 answers · asked by Red 1 in Mathematics

2007-01-18 11:38:54 · 5 answers · asked by howlme 2 in Physics

does anyone know how to do equations whith integers like negitive 3s=negitive 24

2007-01-18 11:38:44 · 8 answers · asked by Anonymous in Mathematics

A. 24 g.
B. 31 g.
C. 25 g.
D. 47 g.

2007-01-18 11:38:16 · 3 answers · asked by Noor 3 in Chemistry

2007-01-18 11:37:46 · 1 answers · asked by Anonymous in Chemistry

4cos^2x -3 =0

2007-01-18 11:37:31 · 1 answers · asked by jmayer8921 1 in Mathematics

2007-01-18 11:37:21 · 4 answers · asked by Yieba 2 in Biology

Duluth, Minnesota, is about 1,500 miles from the Atlantic Ocean, yet oceangoing ships enter its harbor. HOW?

2007-01-18 11:37:13 · 7 answers · asked by Chris F 1 in Geography

i need what you need, and how it happpens
thanks

2007-01-18 11:37:09 · 1 answers · asked by Anonymous in Chemistry

states of matter of oxygen

2007-01-18 11:35:45 · 4 answers · asked by bingotheclown2000 1 in Physics

While a molecule is the smallest representative particle of a molecular compound, a formula unit is the smallest particle in a
A. ionic compound
B. monatomic element.
C. diatomic element.
D. ion.

2007-01-18 11:35:19 · 3 answers · asked by Noor 3 in Chemistry

possibly 2 tough derivative questions:
Determine the first derivative.

y(sqaureroot of x) - x(squareroot of y) = 16

and

2/3sin^3/2x - 2/7sin^7/2x
these x's are not part of the exponent**

thanks in advance.

2007-01-18 11:34:23 · 1 answers · asked by Scott Z 1 in Mathematics

states of matter of oxygen

2007-01-18 11:33:47 · 4 answers · asked by bingotheclown2000 1 in Chemistry

What are the 3 isotopes of hydrogen and how many protons and neutrons does each have, provide the name of each isotope.

2007-01-18 11:32:55 · 3 answers · asked by Onions 2 in Chemistry

The outside wheels of a car, running on a circular track, are going twice as fast as the inside ones. What is the length of the circumference described by the outer wheels? The wheels are five feet apart on the two axles.

2007-01-18 11:32:48 · 2 answers · asked by Anonymous in Physics

2007-01-18 11:32:22 · 1 answers · asked by ibid 3 in Biology

If a civilisation living on a planet orbiting a nearby star a few light years away detonated a 50MT thermonuclear bomb in space near the planet with direct line of sight to the Hubble space telescope, say, would the explosion be detectable by Hubble in any way (visual, gamma ray burst, infra red, x-ray)?

2007-01-18 11:31:59 · 6 answers · asked by Anonymous in Astronomy & Space

2007-01-18 11:31:21 · 6 answers · asked by Anonymous in Mathematics

2007-01-18 11:31:04 · 2 answers · asked by Yokeen L 1 in Biology

2007-01-18 11:30:10 · 9 answers · asked by Erie94550 1 in Mathematics

2007-01-18 11:29:30 · 2 answers · asked by al33191 1 in Mathematics

2007-01-18 11:28:21 · 6 answers · asked by Anonymous in Engineering

w+x+y+z=81

5x=w
5y=x
2y=z

what does x equal???


I got 14.464 and thats wrong apparently, the answer is supposed to be 5. how does that work?

If you check your work, only x=5 works. It's so confusing.

it was from another question, i tried it but it didn't work in the equation, is the equation wrong, am i not supposed to solve it mathematiclly



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2007-01-18 11:27:47 · 3 answers · asked by LazyDaisy 3 in Mathematics

I recall at school learning about when two things are oscillating at the same frequency - it has a name. It's what causes glass to shatter when opera singers hit the top note! Anyone can fill me in?

2007-01-18 11:26:31 · 11 answers · asked by Ferdy 2 in Physics