Science & Mathematics - 6 November 2006

Which one of the following is not true?
a) The additive inverse of - 1/3 is 1/3
b) The reciprocal of 3 is -3.
c) The multiplicative inverse of 3 is .
d) The reciprocal of 1 is 1.

2006-11-06 05:42:22 · 4 answers · asked by Anonymous in Mathematics

2006-11-06 05:42:17 · 4 answers · asked by Anonymous in Engineering

If Neil Armstrong was the very first person to land on the moon in the existence of mankind then who was taking his picture when he jumped off the ladder?

2006-11-06 05:41:20 · 11 answers · asked by Anonymous in Astronomy & Space

What is the third degree coefficient for the trinomial below?

xy+2x^2y-3x^-2y

4x+5y^3-6_^x

7xy+8xy^2+9

2006-11-06 05:41:17 · 3 answers · asked by Eric 2 in Mathematics

What two properties of real numbers can be used to show that the following equation is true for any real value of a ?

a + [a + (-a)] = a

2006-11-06 05:40:38 · 2 answers · asked by Anonymous in Mathematics

Why are all the planets portrayed as being on the same plane when models are depicted of the solar system? Is this accurate? Do all of the planets revolve around the sun on the same plane and if so why?

2006-11-06 05:39:13 · 5 answers · asked by Anonymous in Astronomy & Space

2006-11-06 05:38:40 · 3 answers · asked by Anonymous in Biology

2006-11-06 05:38:30 · 8 answers · asked by J D 1 in Other - Science

Could someone help me find the intersections of these pairs of equations (and write out the steps neccessary to find them -

x^2 + y^2 = 4, x^2 + (y-6)^2 = 25
x^2 + y^2 - 4y = 0, x^2 + y^2 - 2x = 4
x^2 + y^2 = 4, x^2 + y^2 - 6x - 6y = -14

Cheers!

Cooper

2006-11-06 05:38:13 · 2 answers · asked by Cooper M 1 in Mathematics

The problem is this:

You have a bag of 56 marbles, 24 of which are blue. What is the
probability that you will choose a blue marble?

2006-11-06 05:37:03 · 9 answers · asked by Anonymous in Mathematics

2006-11-06 05:36:03 · 3 answers · asked by Amit Mangal 1 in Chemistry

2006-11-06 05:35:40 · 3 answers · asked by kelxcore09 1 in Chemistry

2006-11-06 05:35:02 · 14 answers · asked by gaz p 1 in Zoology

2006-11-06 05:33:58 · 3 answers · asked by instigatorstartsit 1 in Chemistry

2006-11-06 05:31:04 · 3 answers · asked by Sang 1 in Mathematics

It’s hard for me to believe that astrologist observing the aster for thousands of years never discovered that theory.

2006-11-06 05:29:58 · 11 answers · asked by gama 5 in Astronomy & Space

I want to test a house next to a power line.....who should I call?

2006-11-06 05:28:44 · 1 answers · asked by busy agent 1 in Engineering

This is a Algebra problem ..Thanks for yours honest answers.
Here are some options: A) x2-2xy-7;B)2x2+2xy+7;C)x2+6xy-7;D)x2+6xy+7.

2006-11-06 05:26:33 · 5 answers · asked by Anonymous in Mathematics

2006-11-06 05:26:07 · 6 answers · asked by canadianblaze2002 1 in Mathematics

2006-11-06 05:25:56 · 7 answers · asked by homedawg252 1 in Chemistry

2006-11-06 05:25:13 · 33 answers · asked by tw1zzel 1 in Zoology

2006-11-06 05:24:00 · 31 answers · asked by Anonymous in Mathematics

chemisty

2006-11-06 05:23:35 · 4 answers · asked by Anonymous in Chemistry

I need help solving this.

Let p(x)=x^3+9x^2-22x, and let q(x)=x+11. What is:

p+q(x)

p-q(x)

pq(x)

p
_(x)
q

2006-11-06 05:22:23 · 3 answers · asked by Eric 2 in Mathematics

2006-11-06 05:22:06 · 5 answers · asked by dubkza 1 in Physics

The tidal effects that Jupiter has on Io made me wonder if the Sun ever had the same effect on Mercury. Now I understand that the distances are vastly different and there are great differences in the relationships of these bodies so it might be like comparing apples to oranges. Any help is appreciated.

2006-11-06 05:20:18 · 3 answers · asked by Robert 2 in Astronomy & Space

Suppose that 1.2 g of NaOH is dissolved in 500mL of a aquous buffer that is 0.400 M in NaC2H3O2 and 0.800 M in HC2H3O2.

Calculate the resulting pH and the change in pH.

Please show work so I can figure it out...I've been having a hard time with this!

Thanks!

2006-11-06 05:18:44 · 2 answers · asked by Anonymous in Chemistry

2006-11-06 05:16:34 · 8 answers · asked by pammy 1 in Mathematics

2006-11-06 05:13:44 · 5 answers · asked by dubkza 1 in Physics

2006-11-06 05:13:07 · 2 answers · asked by veronaitaly 1 in Botany