Science & Mathematics - 29 November 2006

(i) Rotate the image clockwise by 60 degrees
(ii) Shift the image to the right by 20 units
(iii) Scale the image by half as large
mail me it to ritu_basu20032002@yahoo.com

2006-11-29 02:56:37 · 2 answers · asked by Anonymous in Mathematics

a 6,7,10,4,9 Median?
b 38,40,59,43,48 Median?
c 17,17,13,13,16,14,18 Median?

Could you please explain this?

2006-11-29 02:55:23 · 6 answers · asked by Anonymous in Mathematics

ALl of you that think im cheating on me homework. Well your wrong. Im homeschooled and this to review for a test. THis isnt my test. How else am i suspose to check my answers?!?!?

2006-11-29 02:54:44 · 7 answers · asked by me1026 1 in Mathematics

2006-11-29 02:54:20 · 8 answers · asked by Anonymous in Chemistry

2006-11-29 02:54:05 · 2 answers · asked by mzmuffin40155 2 in Mathematics

I'm trying to convert a hand crank meat grinder into an electric one. I know that the motor and grinder need to be connected by 2 pulleys and a wheel. The motor I have is 1/3 HP, 3450 rpms and comes from a dishwasher. There is some kind of coil in the wiring before the current gets to the motor. Do I need this coil/capacitor for the motor to work or can I just splice the motor to an electric cord and add an on/off switch? I just want to make an electric meat grinder and want to know how to properly make the motor turn.

2006-11-29 02:51:59 · 5 answers · asked by paul67337 7 in Engineering

Find the y-intercept of the normal to the parabola y=x^2 at the point (a,a^2), where a =/= 0. Find the limit of this y-intercept as a -> 0. For each b > 0 determine the number of normals that can be drawn from the point (0,b) to the parabola y = x^2; justify your answer.


I'm not even sure where to begin. :(

2006-11-29 02:51:02 · 2 answers · asked by Anonymous in Mathematics

The technology world has the concept of open-source, whereby skilled individuals can contribute to a collective technology goal. Does such a thing exist within the scientific community, allowing individuals with scientific minds/background to contribute to science, rather than limiting it to institutions and universities? If not, why not?

2006-11-29 02:49:34 · 8 answers · asked by Michael B 2 in Other - Science

Solve for x:

4x – 7 = -3(6 – 1)

x =

Question 2:
Solve for x:

5(x – 1) = 3x + 8

Enter a fraction.
x =

Question 3:
Solve for x:

3x – 2 = 2(x + 3) – 4


x =

Question 4:
Solve for x:


4x - (-1 + 3) = 2x – 1
2


Enter a fraction, NOT a decimal.
x =
Question 5:
Solve for x:


x - x = x - 2
3 4 6


x =
Question 6:
Solve for x:

-5x – 3 = -4x – 2
x =

Question 7:
State if the equation is a contradiction or an identity. Copy and paste your answer to avoid a spelling error.
3x – 3 = 2x – 7 + 2x 2/


Enter only one word!


Question 8:
State if the equation is a contradiction or an identity. Copy and paste your answer to avoid a spelling error.

x – 12/3 + 7 – 2x = -x – 4/2 + 5

Enter only one word!


Question 9:
Solve these for the designated variables in the following.

P = 2l + 2w, solve for w

Which is the solution?

A. W = P - (2L /2)
B. W = (P - 2L)/2
C. W = P - 4L2
D. W = 2L - p
Enter one letter only!


w =
Question 10:
y = mx + b, solve for x

Which is the solution?
A. x = (y - b)/m
B. x = y - (b/m)
C. x = yb - m
D. x = ym - b
Enter one letter only!


Question 11:
v = (1/3)bh, solve for h

Which is the solution?
A. h = 3vb
B. h = 3(v/b)
C. h = (3v)/b
D. h = 3b/v
Enter one letter only!


Question 12:
b + ax = 12;
solve for x

Which is the solution?
A. x = 12b/a
B. x = 12 - (b/a)
C. x = 12b - a
D. x = (12 - b)/a
Enter one letter only!


Question 13:
ax - c = d;
solve for x

Which is the solution?
A. x = 12 - b/a
B. x = 12 - ab
C. x = (d + c)/a
D. x = (d + a)/c
Enter one letter only!


Question 14:
bx = h;
solve for x

Which is the solution?
A. x = bh
B. x = h/b
C. x = b - h
D. x = h - b
Enter one letter only!


Question 15:
A _______ is a quantity that makes an equation true.

Choose from:
Contradiction
Solution
Exponent



Question 16:
What degree is this equation? (this was covered in assignment 1.2)
2x2 - 2x + 1 = 32
Enter a number.


Question 17:
What degree is this equation?
2x - 2x = 72
Enter a number.


Question 18:
Solve these equations.
i - 11 + 23 + 19 = 47
i =

Question 19:
18 + (22 - 8) = 16

k

k =

Question 20:
12 × 13 = 78

g

g =

2006-11-29 02:46:33 · 8 answers · asked by me1026 1 in Mathematics

determine the radius and height of the cylinder of maximum volume that can be obtained by revolving a rectangle of perimeter 24 inches about one of its sides.

how do you solve that??

thanks.

2006-11-29 02:44:51 · 1 answers · asked by leksa27 2 in Mathematics

What is the difference between sonar and ultrasonic waves? What's the frequency range of each of them?

2006-11-29 02:44:47 · 8 answers · asked by Honest 1 in Physics

and how do they work?

2006-11-29 02:44:03 · 4 answers · asked by Fiesty Redhead 2 in Engineering

It always amazes me just how loud sound is to our ears, even when the door or window is closed. How can dropping a ball cause so much disturbance that it shakes all the air and then all the atoms in the door, into our ear and still sound so loud! It just doesn't make sense, or does it?

2006-11-29 02:43:59 · 15 answers · asked by Michael B 2 in Physics

science homework

2006-11-29 02:43:28 · 6 answers · asked by yipee! 1 in Chemistry

2006-11-29 02:43:24 · 4 answers · asked by shaby_1999 1 in Biology

2006-11-29 02:41:59 · 1 answers · asked by earnmoney u 1 in Engineering

id like to know a bit of info about the theroy that we could be aliens and a colanisation from another planet that some experts belive that this could be true and that differnt prrof and reserch adds up to this.i think its ver interstesing

2006-11-29 02:37:40 · 6 answers · asked by stoke 2 in Astronomy & Space

2006-11-29 02:37:28 · 4 answers · asked by chemist and chemista 1 in Chemistry

2006-11-29 02:36:17 · 19 answers · asked by Anonymous in Weather

2006-11-29 02:34:25 · 7 answers · asked by Anonymous in Chemistry

Question 1:
Solve for x:
3x – 7 = 2
x =

Question 2:
Solve for x:
2x – 6 = 3 (x – 1)
x =

Question 3:
Solve for x:
4x + 4/2 = 3(x + 1) – 2
x =

Question 4:
Solve for x. Enter this answer as a fraction:
6x – 3 = 2x – (4 – 3)/3
x =

Question 5:
Solve for x:
x/2 + x/3 = (3x + 2)/4
x =

Question 6:
Solve for x:
-4x – 2 = -6 – 2x
x =

Question 7:
A linear equation in one variable is an equation that can be written in the form ax + b = c where a, b, and c are real numbers and a is not _____. Enter a number.


Question 8:
The addition property of equality states that if a = b then a + c = b + ___ if a, b, and c are real numbers.
What letter is missing? Enter one letter only:


Question 9:
The multiplication property of equality states that if a = b then a c = ___ if a, b, and c are real numbers.
What letters are missing? Enter both, in any order, separated by a comma.


Question 10:
State if the equation is a contradiction or an identity.
2x – 4 = 2(x + 1) – 12/2

Enter one word: either "contradiction" or "identity". You can copy and paste it to avoid a spelling error!


Question 11:
State if the equation is a contradiction or an identity. You can copy and paste the word to avoid a spelling error!
4x – 4 = -3 + 4x


Question 12:
State if the equation is a contradiction or an identity. You can copy and paste the word to avoid a spelling error!
3x – 2(2 – x) = 3(x – 4) + (6x)/(5 – 2)


Question 13:
I = PRT, solve for P

Which one of these is the solution?
A. P = R/(RT)
B. P = RI(T)
C. P = I /(RT)
D. P = R(IT)
Enter one letter: a, b, c, or d.


Question 14:
y = mx + b, solve for b

Which one of these is the solution?
A. b = ymx
B. b = y - mx
C. b = y / mx
D. b = (ym)/x
Enter one letter: a, b, c, or d.


Question 15:
Solve for h:
a = (1/2)bh

Which one of these is the solution?
A. h = (2a)/b
B. h = 2ab
C. h = (1/2)ab
D. h = 2(a/b)
Enter one letter: a, b, c, or d.


Question 16:
Solve for w:
a = lw

Which one of these is the solution?
A. w = al
B. w = l/w
C. w = a/(2l)
D. w = a/l
Enter one letter: a, b, c, or d.


Question 17:
Solve for the variable in the following equations.
(j + 8) × (4 + 20) = 240
j =

Question 18:
g(8 + 21) = 232
g =

Question 19:
23 - 3 + d = 36
d =

Question 20:
10 ÷ e + (8 + 4) = 17
e =

2006-11-29 02:32:06 · 6 answers · asked by me1026 1 in Mathematics

I don't want to use chemical hair straighteners but natural products don't work for me. Is there something to fix the root that causes the hair curl in the first place and make it grow straight in the future?

Hopefully someone in chemistry will have the answer for me.

2006-11-29 02:29:53 · 2 answers · asked by Anonymous in Chemistry

A mixture contained no flourine compound except methyl fluoroacetate, FCH2COOCH3 (molar mass- 92.1 g/mol). When chemically treated, all the flourine was converted to CaF2 (molar mass= 78.1 g/mol) The mass of CaF2 obtained was 32.4 g. Find the mass of methyl fluoroacetate in the original mixture.

2006-11-29 02:27:56 · 2 answers · asked by Kenneth B 1 in Chemistry

2006-11-29 02:27:20 · 4 answers · asked by auribie t 1 in Medicine

a) 18 cm.
b) 3 cm.
c) 6 cm.
d) 12 cm.

2006-11-29 02:25:54 · 11 answers · asked by cave_21man 1 in Mathematics

2006-11-29 02:24:25 · 4 answers · asked by Anonymous in Other - Science

a) 4 in. 2
b) 8 in. 2
c) 63 in. 2
d) 32 in. 2

2006-11-29 02:20:16 · 5 answers · asked by cave_21man 1 in Mathematics

2006-11-29 02:20:01 · 5 answers · asked by old.codger 1 in Astronomy & Space

Hi for my homework I have to solve a number of equeations so they are a formula like:
Key
* is squared

3x*+4x-5=0

I need to make these equations into the same layout as the above equation.

1. 1/x+3/x+2=7 2. 7/2x+2/x-1=4

3. x*+7x+2=2x+4 3. 4x*-3x=2x*+7

4. 2x+3/x-1=x/4

please could you show me the working out to how you change it into a formula like 3x*+4x-5=0 or a site that could help me

Thankyou

2006-11-29 02:19:31 · 8 answers · asked by lilacmagic15 1 in Mathematics

2006-11-29 02:16:47 · 15 answers · asked by Anonymous in Weather