Science & Mathematics - 12 November 2006

2006-11-12 11:32:37 · 7 answers · asked by Anonymous in Mathematics

Please help me solve the following:

(1) sqrt(4x +1) + 3 = 0

(2) sqrt(48 - 2y) + y

(3) sqrt(2y + 7) + 4 = y

(4) sqrt(x+4) = 3

(5) Divide, rationalize the denominator if necessary, then simplify the radical expression:
(6 + sqrt20)/2

2006-11-12 11:31:57 · 5 answers · asked by Big Daddy 2 in Mathematics

Please show me how to do this, i would like to figure the answer out on my own.

2006-11-12 11:28:43 · 8 answers · asked by Dave 1 in Mathematics

2006-11-12 11:27:24 · 5 answers · asked by j850 1 in Biology

1) Simplify:
sqrt(250y^6)

2) Simplify:
sqrt(12x^3/5)

3) Simplify by combining like terms:
5sqrt8 + 2sqrt18

4) Solve:
sqrt (2y +7) +4 = y

5) Solve:
sqrt(48 - 2y) = y

2006-11-12 11:26:55 · 3 answers · asked by Big Daddy 2 in Mathematics

I will have my surgery on Dec 05. Could anyone tell me about her or his experience. I have 70 year old and in good health.

How painful was it.
How long did it take you to recover.
How long before you started walking.
Was is worth it.
I do not know why I am so scared of this.

I appreciate your answer.

2006-11-12 11:24:22 · 6 answers · asked by Anonymous in Medicine

i would like to know what star it was and why it brightened and dimmed so quickly, im not sure what constelation it was in because there were alot of tree's all i know was that i was looking east at the time, i would like to find it again if possible when it does this. thank you

2006-11-12 11:24:17 · 11 answers · asked by hypernova4218 1 in Astronomy & Space

Impurities: vinegar, acetic acid, etc

2006-11-12 11:23:29 · 4 answers · asked by blue_bee 4 in Medicine

L is the verticie and all sides are equal

2006-11-12 11:22:47 · 5 answers · asked by shane s 1 in Mathematics

2006-11-12 11:20:36 · 3 answers · asked by Mz.Jazzy 1 in Biology

I'm done all my homework except the last question and the bonus which I do not know where to start....

How many moles of atoms are in 1 mole of Al(Ch3COO)3
If you don't want to show all the steps to get the answer just explain how to do it if you're one of those people who believe i'm just trying to get other ppl to do my homework for me....

2006-11-12 11:20:16 · 4 answers · asked by Silentspeedster 2 in Chemistry

2006-11-12 11:18:22 · 7 answers · asked by Miki79 2 in Astronomy & Space

How can I estimate the sine and tangent in a given triangle?

2006-11-12 11:16:32 · 2 answers · asked by girlnamedfreak 1 in Mathematics

A person is standing on a spring bathroom
scale on the °oor of an elevator which is
moving up and slowing down at the rate of
1:59 m=s2.
The acceleration of gravity is 9:8 m=s2 :
If the person's mass is 83:1 kg, what does
the scale read? Answer in units of n.

2006-11-12 11:15:12 · 3 answers · asked by kavita 1 in Physics

2006-11-12 11:15:01 · 2 answers · asked by here_nor_there 4 in Earth Sciences & Geology

A student stands on a bathroom scale in an
elevator at rest on the 64th °oor of a building.
The scale reads 849 N. As the elevator moves
up, the scale reading increases to 942 N, then
decreases back to 849 N.
The acceleration of gravity is 9:8 m=s2 :
Find the acceleration of the elevator. An-
swer in units of m=s2.

As the elevator approaches 74th °oor the scale
reading drops as low as 774 N.
What is the acceleration of the elevator?
Answer in units of m=s2.

2006-11-12 11:14:20 · 2 answers · asked by kavita 1 in Physics

this proof has two equilateral triangles one triangle is DCA and the other triangle is DEB

2006-11-12 11:14:16 · 1 answers · asked by shane s 1 in Mathematics

A projectile (mass = 0.24 kg) is fired at and embeds itself in a target (mass = 2.61 kg). The target (with the projectile in it) flies off after being struck. What percentage of the projectile's incident kinetic energy does the target (with the projectile in it) carry off after being struck?

2006-11-12 11:14:14 · 3 answers · asked by Alan l 1 in Physics

A person stands on a scale in an elevator.
The maximum and minimum scale readings
are 652:4 N and 301:8 N, respectively.
The acceleration of gravity is 9:8 m=s2 :
Assume the magnitude of the acceleration
is the same during starting and stopping, and
determine the weight of the person. Answer
in units of N.

Determine the person's mass. Answer in units
of kg.

Determine the acceleration of the elevator.
Answer in units of m=s2.

2006-11-12 11:11:23 · 2 answers · asked by kavita 1 in Physics

2006-11-12 11:09:58 · 5 answers · asked by Anonymous in Biology

Let f(x) =(x-2)/x(x+1) . Find all x-intercepts. Find all y-intercepts. Find all vertical asymptotes. Find all horizontal asymptotes. I know this can probably be plugged into a calculator. I don't have one with me. I am just looking for the answers. No reason to explain though it would be helpful.

2006-11-12 11:09:55 · 2 answers · asked by Jessie L 2 in Mathematics

opal's only and the answers

2006-11-12 11:08:48 · 1 answers · asked by Anonymous in Earth Sciences & Geology

Two cars start at the same location and travel in the same direction at average speeds of 40 miles per hour and 55 miles per hour. How much time must elapse before the two cars are 10 miles apart?

The answer is 40 minutes .. But how do I get to the answer ?? ..
Can anyone please explain how to solve this problem.

Thank You

2006-11-12 11:07:59 · 4 answers · asked by headache0006 1 in Mathematics

A wire is first bent into the shape of a square with side 7 cm. The wire is then bent into the shape of a rectangle, with a length of 9 cm. What is the width of the rectangle?

2006-11-12 11:05:16 · 11 answers · asked by Anonymous in Mathematics

2006-11-12 11:02:19 · 3 answers · asked by ssuthernbelle 1 in Mathematics

2006-11-12 11:02:06 · 2 answers · asked by Anonymous in Chemistry

2006-11-12 11:01:26 · 5 answers · asked by Bob F 1 in Botany

SOME16YROLD HAVE BEEN ABLE TO TAKE A COURSE WHIH GIVES A BASIC KNOWLEDGE OF MEDICINE NAMESM TERM ETC.

2006-11-12 11:01:04 · 1 answers · asked by annebern1 1 in Medicine

Let f(x) = (x-2)/x(x+1). Find the domain.

2006-11-12 11:00:01 · 2 answers · asked by Jessie L 2 in Mathematics

2006-11-12 10:59:14 · 12 answers · asked by shamrock_bhoy 1 in Engineering