Science & Mathematics - 5 July 2007

2k + 3h = 8
5k - 2h = -18
find the value of k and h.

i could'nt understand my maths teacher....
heard there's 2 ways 2 find 'em(k & h)
do tell me both
please show the full calculation 4 me!!!!

2007-07-05 02:18:38 · 11 answers · asked by The13Cats 2 in Mathematics

wire gauze
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cork borer
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test tube
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2007-07-05 02:15:15 · 4 answers · asked by keishlets 1 in Chemistry

2007-07-05 02:13:01 · 5 answers · asked by rossana l 1 in Chemistry

2007-07-05 02:12:09 · 13 answers · asked by Anonymous in Astronomy & Space

2007-07-05 02:09:00 · 8 answers · asked by Anonymous in Earth Sciences & Geology

2007-07-05 02:07:16 · 8 answers · asked by Anonymous in Earth Sciences & Geology

Can anyone direct me to a program that enables me to enter my location on a specific date and it will give me an approximate time for sunrise and sunset?

Thanks

2007-07-05 02:06:31 · 2 answers · asked by Anonymous in Astronomy & Space

Continental Divides normally define watershed directions (e.g., Atlantic vs. Pacific); however, are continental divides the result of fault lines or tectonic plates? If not, what caused them to form?

2007-07-05 02:05:54 · 8 answers · asked by Anonymous in Geography

I couldnot find any logic behind this fact!

2007-07-05 02:05:54 · 13 answers · asked by Som™ 6 in Engineering

2007-07-05 02:04:32 · 1 answers · asked by memo. 1 in Engineering

Would be grateful if you can please tell me how to work these out. Thank you very much!
1) A fund is created with an initial amount of $20000. Each year, an interest of 6% is added into the amount. If a total of $1800 is used up each year, calculate how many withdrawal times(years) of $1800 can be made.
2) In an arithmetic progression, the sum of its first odd numbers is more than the sum of its first even numbers by 3n. Find the common difference of this arithmetic progression.

2007-07-05 01:59:55 · 5 answers · asked by the DoEr 3 in Mathematics

just want to know.....

2007-07-05 01:57:26 · 13 answers · asked by lionel korte 1 in Astronomy & Space

I think it would work well, but Alan says that it would need air to ignite the propellant.

2007-07-05 01:56:10 · 14 answers · asked by theultravirus 1 in Astronomy & Space

my mate left magoots in the boot of his car some got out and the flys keep on comin

2007-07-05 01:45:03 · 8 answers · asked by bigasmokie 1 in Zoology

i know that -40C = -40F is where they meet.....but i dont know how to get that answer if i have to show a solution.

2007-07-05 01:43:14 · 8 answers · asked by Metono 2 in Mathematics

A mixture of 2g of CH4 and 1.65g of Si2H6, both gases, are placed in a flask. The total pressure exerted by this mixture is 102kPa. What is the partial pressure?

Any ideas?

2007-07-05 01:36:59 · 5 answers · asked by Anonymous in Chemistry

our universe is unspeakable, it may have an ending,corner or just a blank space. i realy like to learn more about our universe.

2007-07-05 01:34:12 · 12 answers · asked by lionel korte 1 in Astronomy & Space

The area bounded by the curve y = x^3 and the line y = 4x, in x > 0, is rotated 2π radians
about the x-axis. Calculate the volume generated

2007-07-05 01:32:24 · 2 answers · asked by Anonymous in Mathematics

A total of 108 students are in the valley high school marching band. There are 20 more boys than girls in the band. How many boys and how many girls are in the band?

2007-07-05 01:31:28 · 5 answers · asked by Shameless 3 in Mathematics

Seagulls only lives by the sea?

2007-07-05 01:30:04 · 6 answers · asked by Anonymous in Zoology

what do Integrated Circuits do and what makes them do it?

2007-07-05 01:28:43 · 7 answers · asked by The Wise One 2 in Engineering

2x - y = 6

y= -1/4x + 3

2007-07-05 01:27:53 · 3 answers · asked by Shameless 3 in Mathematics

I mean, is it just getting warmer?

2007-07-05 01:26:43 · 12 answers · asked by Roo 2 in Astronomy & Space

1 integrate {xe^3xdx} with a superscript of 2 and lowerscript of 0, outside the brackets,, showing full working.

2007-07-05 01:26:18 · 3 answers · asked by Anonymous in Mathematics

2007-07-05 01:23:41 · 6 answers · asked by Bill W 【ツ】 6 in Zoology

(4, -4) (-2, -1)

2007-07-05 01:23:37 · 7 answers · asked by Shameless 3 in Mathematics

2007-07-05 01:20:35 · 8 answers · asked by Anonymous in Astronomy & Space

Thanks a lot for helping me

2007-07-05 01:17:00 · 6 answers · asked by Alfred E Neuman 1 in Biology

Here's the problem. Let's say I'm creating 30,000 square yards of weed-guard. The guard is going to be 24 inches wide. How many lineal feet of weed-guard am I going to make?

Thanks in advance all!

2007-07-05 01:16:23 · 2 answers · asked by Chris 1 in Mathematics

offer EVERY possibility for rain EXCEPT 50%

2007-07-05 01:13:26 · 8 answers · asked by Anonymous in Weather