Science & Mathematics - 16 November 2007

Hey everyone we are currently studying logarithms in grade 12 advanced functions and I am having a problem with this question:

4.6 * 1.06^(2x + 3) = 5 * 3^x [Ans: 0.09]

How would you solve for x? The answer is probably simple but I'm just not seeing it right now. Any help?

Thanks.

2007-11-16 10:54:44 · 8 answers · asked by s_j_sawyer 3 in Mathematics

they depend on energy stored in chemical bonds by autotrophs for their food energy?

I am making sure ! I need an A on my test!thanks!

2007-11-16 10:39:28 · 1 answers · asked by Lorelei's Mommy ( & prego) 5 in Biology

I want to study the stars just for fun because I recently became very intrigued. Does anyone have any tips? (Please no: "buy this and that" stuff)

2007-11-16 10:37:52 · 5 answers · asked by Noreen 3 in Astronomy & Space

2007-11-16 10:36:48 · 16 answers · asked by Alexander 6 in Mathematics

please help out! thank you!

2007-11-16 10:35:27 · 2 answers · asked by mercury 1 in Mathematics

A){4} B){-6} C){ } D){4,-6}

2007-11-16 10:32:47 · 2 answers · asked by yanksrule4691 1 in Mathematics

The water is the only exception to a rule. All the solids sink in their liquids.

2007-11-16 10:31:33 · 5 answers · asked by Anonymous in Chemistry

I don't know why this is giving me trouble.

A generator is a cup that has 6 cubes, 3 are red and 3 are black. The red ones count for 0 points and the black count for 1 point.

You draw from each cup one time and then replace the cubes.

So if you have 0 generators you can only get a sum of 0. If you have 1 generator you can get a sum from 0 to 1. For 2 generators you can get a sum from 0 to 2....and so on.

How many combinations can you have for 1 to 4 generators?


This is what I have but I want to make sure I have the correct amount.

1 generator: B, R
2 generators: BB, BR, RB, RR
3 generators: BBB, BBR, BRB, RBB, RRR, RRB, RBR, BRR
4 generators: I don't want to write them out, but I have 16 all together

Is that right???? Thank you so much!

2007-11-16 10:30:59 · 3 answers · asked by Anonymous in Mathematics

2007-11-16 10:30:57 · 15 answers · asked by Anonymous in Other - Science

2007-11-16 10:30:13 · 10 answers · asked by Stony 4 in Agriculture

Point p lies outside circle O,which has a diameter of line AOC.The angle formed by tangent line PA and secant line PBC measures 30 degrees.Sketch the conditions given above and find the number of degrees in the measure of minor arc CB.[show all work.]

2007-11-16 10:25:53 · 2 answers · asked by yanksrule4691 1 in Mathematics

Q:using a plumb line and a string measure the vertical distance h, the ball (steel ball) must drop from the bottom end of the ramp in order to land in an empty soup can on the floor.

1)what may cause a ball to miss the target?
2)you probably noticed that the range of the ball increases in direct proportion to the speed at which it left the ramp. the speed depends on the release point of the ball on the ramp. what roles do you think air resistance had in this experiment?

3)should the height of the can be taken into account when measuring the vertical distances h?

2007-11-16 10:25:45 · 3 answers · asked by peipei91189 1 in Physics

i will give u hint................... it's really big

2007-11-16 10:23:42 · 8 answers · asked by pillbox_123 1 in Astronomy & Space

More here:
http://www.liveleak.com/group/ALIEN_INTELLIGENCE
WHY DON'T MY LINKS COME OUT IN BLUE...SO YOU CAN JUST CLICK IT? PLEASE TELL ME WHAT I'M DOING WRONG! THANKS.

2007-11-16 10:23:40 · 9 answers · asked by Deenie 6 in Paranormal Phenomena

it,s white oval shape.

2007-11-16 10:22:47 · 2 answers · asked by dannie l 1 in Medicine

in a science experiment,when resistor A and resister B are connected in a parallel circuit,the total resistance is 1 all over 1/A + 1/B.This complex fraction is equivalent to

2007-11-16 10:21:57 · 7 answers · asked by yanksrule4691 1 in Mathematics

I have these two problems i cant solve and I'd like some help with them, I already posted the other one. If you could post the steps you take to get the answer it would help me alot in understanding the concept of this. They provide me with these answers.

1. y' = 12y / 6x^2 + 5y^2 - 5y
2. y' = 12x / 6x^2 + 5y^2 - 10y
3. y' = 10x / 6x^2 + 5y^2 - 10y
4. y' = 10y / 6x^2 - 5y^2 + 5y
5. y' = 10x / 6x^2 - 5y^2 + 10y
6. y' = 12x / 6x^2 - 5y^2 + 5y

2007-11-16 10:15:40 · 3 answers · asked by Damian 1 in Mathematics

2007-11-16 10:13:57 · 5 answers · asked by Anonymous in Chemistry

2007-11-16 10:07:49 · 4 answers · asked by Quagmire77 1 in Mathematics

Other than a change in humidity/tempterature, how in the name of thermodynamics can guitar strings go sharp (i.e. increase their tension)?

2007-11-16 10:07:08 · 5 answers · asked by Orpheus Rising 5 in Physics

Assume a 9 kg bowling ball moving at 1 m/s bounces off a spring at the same speed that it had before bouncing.

(a) What is its momentum of recoil? (kg·m/s)

(b) What is its change in momentum? (Hint: What is the change in temperature when something goes from 1 degree to -1 degree?) (kg·m/s)

(c) If the interaction with the spring occurs in 0.5 s, calculate the average force the spring exerts on it. (N)

Good Luck!

2007-11-16 10:06:13 · 5 answers · asked by gmfron 1 in Physics

A 52.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.700 and 0.440, respectively.

(a) What horizontal pushing force is required to just start the crate moving?
_ N

(b) What horizontal pushing force is required to slide the crate across the dock at a constant speed?
_N

2007-11-16 10:04:38 · 4 answers · asked by Anonymous in Physics

2007-11-16 10:02:20 · 4 answers · asked by puppieslalalove 2 in Medicine

The parachute on a race car that weighs 7250 N opens at the end of a quarter-mile run when the car is traveling 45 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1100 m?
_N

2007-11-16 10:02:04 · 1 answers · asked by Anonymous in Physics

The asterisk is a multiplication sign. the ln4 is just there with no sign next to it, im having trouble understanding the concepts so I would like to see the steps one would take in order to solve this and maybe possible some brief reasoning would be nice as well. they give me the following possible answers. Thanks in advance for any help.

1. f'(x) = (5 * (4^x) - 8x^3) ln 4
2. f'(x) = 5x * (4^x-1) - 2x^3 ln 4
3. f'(x) = (5 * (4^x) - 2x^3) ln 4
4. f'(x) = 20 * (4^x-1) - 8x^3 ln 4
5. f'(x) = (5 * (4^x-1) - 8x^4) ln 4
6. f'(x) = 5 * (4^x-1) - 2x^3 ln 4

2007-11-16 10:01:20 · 4 answers · asked by Damian 1 in Mathematics

At first day gas price was $1 per galllon.
At second day gas price was $2 per galllon.
At third day gas price was $3 per galllon, and continued to gain one more dollar every day.

Will the odometer ever show 1000 miles?

2007-11-16 10:00:19 · 16 answers · asked by Alexander 6 in Mathematics

The highest-velocity stars an astronomer might observe have velocities of about 400 km/s. What change in wavelength would this cause in the Balmer gamma line?

2007-11-16 09:56:14 · 1 answers · asked by Mike D 2 in Astronomy & Space

2007-11-16 09:55:59 · 2 answers · asked by blueeyegreen 1 in Chemistry

The ph of 0.1 M HClO2(chlorous acid) aqueous solution was measured to be 1.2. What is the value of pKa for chlorous acid?

1.2.57

2. .11

3. 3.91

4. .96

5. 1.40

6. 1.20

2007-11-16 09:53:42 · 3 answers · asked by yakov59 1 in Chemistry

Can Chloroquine/avloclor be traced in the blood?
If a blood test was done would that specific drug show up?

2007-11-16 09:52:07 · 2 answers · asked by Anonymous in Medicine