Science & Mathematics - 30 January 2007

8 ounces x 1 pound
--------------------------
16 ounces

2007-01-30 13:21:07 · 11 answers · asked by shelly z 2 in Mathematics

it is an assignment

2007-01-30 13:20:09 · 6 answers · asked by jay gal 3 in Geography

what were his major achievements

2007-01-30 13:19:28 · 3 answers · asked by sheeki918 1 in Medicine

Iam a girl. My height is 59 inches and Iam 17. Iam worried about my height. What I do ?

2007-01-30 13:18:10 · 4 answers · asked by loally 2 in Mathematics

2007-01-30 13:16:46 · 6 answers · asked by Anonymous in Astronomy & Space

I asked this question before but no one answered :(

I am in pre calc and I need to solve this:

Well, this is my question: I need to find the range of f^-1(x) AKA inverse of y = (x+1)/(x+2). So, here is my thought process:

x = (y+1)/(y+2)
xy + 2x = y + 1
xy - y = - 2x + 1
y(x - 1) = - 2x + 1
y = (-2x + 1) / ( x - 1)
Hence:
F inverse of x = (-2x + 1) / (x - 1)

The range should be all real numbers, right? I got marked wrong on my quiz. Can someone please help me? Even when I graphed it, it seemed as if it was all real "y".....what am I doing wrong?

BTW, I havent learned yet how to do derivatives.....but still help!!!

2007-01-30 13:15:58 · 2 answers · asked by Anonymous in Mathematics

please help me solve this integral..i am stuck

integral: square root of 9 +4x^2 dx

2007-01-30 13:15:38 · 2 answers · asked by re_defin3d 2 in Mathematics

2007-01-30 13:15:28 · 3 answers · asked by jackie h 1 in Botany

Round to the nearest tenth!!!!

1.The scale of a map is 1in= ______mi
map: 5.4in
actual: 67.5mi

2.The scale factor for a model is 6mm= 9m
model: 60.3
actual:_____m

3.The scale of a map is 3 in=______mi
map: 1in
actual: 0.7mi

2007-01-30 13:15:23 · 3 answers · asked by katiekcat5 3 in Mathematics

Ms odi earns $850 per week plus 2% of the total sales he makes per week. How much must his total weekly sales be in order for him toearn $1500? Help I came up with $75000 but not sure please help

is/of = 2%/100= 1500/x=2/100

Please let me know and how you came up with it.

2007-01-30 13:12:21 · 10 answers · asked by QUICKC 2 in Mathematics

2007-01-30 13:11:35 · 3 answers · asked by erbelgerbels 2 in Mathematics

2007-01-30 13:11:18 · 3 answers · asked by aLwAyS n LoVe 1 in Botany

2007-01-30 13:10:44 · 9 answers · asked by kiscelle 1 in Astronomy & Space

have you ever known anyone who was abducted or had any experiences with extraterrestrial life-form?

2007-01-30 13:09:09 · 10 answers · asked by cartoonryan789 1 in Astronomy & Space

Let a,b, and c be real #s with a not equal zero. Find error in the following proof that (-b/2a) is solution to ax^2+bx+c=0.

Let x and y be solutions to the equation. Subtracting ay^2 + by + c = 0 from ax^2 + bx + c = 0 yields a(x^2 + y^2) + b(x -y)=0, which we rewrite as a(x+y)(x-y)+b(x-y)=0. Hence a(x+y)+b=0, and thus x+y=-b/a. Since x and y can be any solutions, we can apply this computation letting y have the same value as x. With y=x, we obtain 2x=-b/a, or x=-b/2a.

2007-01-30 13:08:47 · 4 answers · asked by ClooneyIsAGenius 2 in Mathematics

2007-01-30 13:08:21 · 4 answers · asked by brandel 1 in Chemistry

Write in algebraic symbols.

three more than the sum of x and y?
c subtracted from the sum of x and y?
if one addend of x is c, what is the other addend?

Solve this equation.

The difference of two numbers is 18, and their sum is 90. Find the two numbers.

2007-01-30 13:08:13 · 5 answers · asked by tennisdude2793 2 in Mathematics

As we all know the fourth dimension is time..... Einstein prompted it to equal footing as space.

Is it really possible to visualise 4 dimensions?

2007-01-30 13:05:34 · 5 answers · asked by sh 1 in Physics

2007-01-30 13:05:22 · 2 answers · asked by azmanmohdali m 1 in Engineering

Just want to know why a magnet points north. Plus if anyone knows why they call it 'north', 'east', 'south', and 'west' that will be good too. Thanks :)

2007-01-30 13:04:48 · 5 answers · asked by aunty_sar 1 in Astronomy & Space

ok well i have to make a ad for a element for science..and my element is potassium..so i need help with idease i could do for it...they have to be interesting so it makes a person interested in you elemetn!!!!!!!!!!

2007-01-30 13:04:24 · 5 answers · asked by Anonymous in Chemistry

2007-01-30 13:04:14 · 1 answers · asked by Mets 1 in Chemistry

where do the light-dependent reactions take place?

2007-01-30 13:03:42 · 4 answers · asked by lex 1 in Biology

2007-01-30 13:03:29 · 3 answers · asked by Mets 1 in Chemistry

can any one solve

x+2/2x-3>1

i just started functions and i cant remember how to do it,..if any one can solve it and show me the steps then that'll be great!!

Thank You

2007-01-30 13:02:44 · 4 answers · asked by Alex M 1 in Mathematics

2007-01-30 13:02:36 · 8 answers · asked by boredfairy 1 in Biology

2007-01-30 13:01:25 · 6 answers · asked by Mets 1 in Biology

An oxide of nitrogen is 25.9% N by mass, has a molar mass of 108 g/mol, and contains no nitrogen-nitrogen or oxygen-oxygen bonds. Draw the Lewis structure and use it to determine each of the following:

name of the molecule
wrong check mark

total number of valence electrons


number of lone pairs of valence electrons


total number of NO bonds


formal charge on N


formal charge on the most central O


O-N-O bond angle (ideal value)
°

N-O-N bond angle (ideal value)

2007-01-30 13:01:13 · 3 answers · asked by Anonymous in Chemistry

Question 17) Find the coefficient of:
a) x in (3x^2 + 2/x)^5

b) x in (x-2^x-1)^5

c) x^3 in (x-2/x)^7

d) x^3 in (x-1/2x)^9

e) x^4 in (x-1/2x)^10

f) p^4q^2 in (p+q)^6

g) x^5 in (1+2x)^7

h) x^3 in (2x-2)^10

i) x^5 in (x - 2/ x^2)^11

j) x^5 in (x+1/x)^9

2007-01-30 13:00:31 · 3 answers · asked by NFLS121a 1 in Mathematics

2007-01-30 12:59:54 · 4 answers · asked by Mets 1 in Biology