Science & Mathematics - 28 November 2007

1.) Which of the ordered pairs
(0, 0), (–2, 10), (–1, –5), (–3, 9)
are solutions for the equation y = 5x?


2.) Which of the ordered pairs
(3, 1), (0, –4), (–4, 0), (–3, –7)
are solutions for the equation x – y = 4?

2007-11-28 12:56:50 · 5 answers · asked by Sara R 1 in Mathematics

2007-11-28 12:54:16 · 8 answers · asked by USMC 4 in Mathematics

how do you find the inverse of...
y=2x+1, and how do you graph that...
how do you graph y=x
how do you find the inverse of y=x
....and graph that...

2007-11-28 12:54:11 · 3 answers · asked by Katrina 2 in Mathematics

http://apps.collegeboard.com/qotd/question.do?questionId=28&src=E


please explaine how to do this

i thought 1/4 which is wrong, or 4 which isnt even an option.

help appreciated thanks.

2007-11-28 12:51:58 · 8 answers · asked by Anonymous in Mathematics

What time, the phase, and the alitude of the moon on this days?
Nov. 13
Nov.15
Nov. 18
Nov.20
Nov.22
Nov.25
Nov.26
Nov.27
any time of that day
2007 btw

2007-11-28 12:51:47 · 2 answers · asked by ♥Love stinks.♥ 2 in Earth Sciences & Geology

First of all wth issss synthetic division.
Second of all...help please
The problem is: x^3 - 2x + 12 / x + 3
I have no idea what it even is???
& PLEASE don't just give me a friggin tutoring or tutorial
site. I need help with THIS SPECIFIC problem not an example.
Pleeease & Thankkkks.

2007-11-28 12:50:58 · 3 answers · asked by yeahh..its..me 2 in Mathematics

i need to find the x and y intercept of
5x+2y= -10

2007-11-28 12:50:50 · 6 answers · asked by Jenna C 1 in Mathematics

I worked it out as a long division problem....getting y - 5 for the answer, pretty basic, but how do I do it a second way? In fraction form?? How? Help!!

Thank you!!

2007-11-28 12:48:04 · 2 answers · asked by Smilingcheek 4 in Mathematics

there are 960 bacteria.
(a) Find the population after t hours
y(t)=?
(b) Find the population after 3 hours.
y(3) = ?
(c) When will the population reach 1550 ?
T = ?

2007-11-28 12:44:28 · 3 answers · asked by simonkf2002 1 in Mathematics

can someone help me with this please

2007-11-28 12:43:49 · 3 answers · asked by T P 1 in Mathematics

A line passes thru the point (3,3) and forms a triangle in the first quadrant with the x and y coordinate axes. The area of the triangle is 24. What is/are the equation(s) of the line(s)?

I can see the answer just by looking at it, but deriving a solution is elusive. I am looking for a solution that doesn’t just involve stating what the x and y intercepts are without deriving them, because that trivializes the problem.

2007-11-28 12:43:28 · 7 answers · asked by Northstar 7 in Mathematics

me and my sister betting on who will get the better report card

2007-11-28 12:41:14 · 4 answers · asked by ~~heavenly sent by god~~ 2 in Earth Sciences & Geology

2007-11-28 12:40:59 · 2 answers · asked by victoria r 1 in Mathematics

doesn't digest the inside of your mouth? Or your stomach, for that matter?

2007-11-28 12:38:46 · 5 answers · asked by ♦♦pixiechix♦♦ 5 in Biology

I didn't get an improper fraction I got -3/4

2007-11-28 12:37:24 · 5 answers · asked by ♥♡stephi♡marie♡♥ 2 in Mathematics

I read on a FAQ website it isn't possible to officially name a star? I think it is way cool but don't want to waste my money on these websites that sell you the "idea" of buying a star. Does anyone know if NASA or a similar international company sponsers these websites?

2007-11-28 12:37:12 · 11 answers · asked by firelillyz 2 in Astronomy & Space

let me explain my friend makes 19.00 and for a shift differential it is 10% more for swings so how much would she actually be making an hour

2007-11-28 12:36:42 · 5 answers · asked by Anonymous in Mathematics

How can I make sure I do well and succeed in my Chemistry class?

this is Chemistry in college.

What advice can you give me on tips and tricks

2007-11-28 12:32:32 · 1 answers · asked by Smiley 2 in Chemistry

Uranus requires 84 years to circle the sun. Find Uranus' orbital radius as a multiple of Earth's orbital radius.

What formula do I need to use and what does this question actually mean? Thanks!

2007-11-28 12:32:08 · 1 answers · asked by Need4Speed 2 in Physics

I reand in the news paper that nASA was gonna end the shuttle program.... ISnt that the last rpogram they have?

2007-11-28 12:30:13 · 4 answers · asked by Anonymous in Astronomy & Space

A nuclear power plant has a power output of 1000 MW and operates with an efficiency of 34%. If excess heat is carried away from the plant by a river with a flow rate of 1.0 x 10^6 kg/s, what is the rise in temperature of the flowing water?
Answer in °C.

2007-11-28 12:26:45 · 1 answers · asked by Tim R 1 in Physics

The ball strikes the ground at the point 125 m from the base of the building. The acceleration of gravity is 9.8

I know the time the balls in motion is 2.14

I just need to knowthe initial velocity of the ball.

Can someonen help?

2007-11-28 12:25:09 · 1 answers · asked by The Problem Solver 3 in Physics

Polynomial Optimization Applications questions, I don't know how to find the answers. thanks.?
If c(x) is the cost of producing x units, then c(x)/x is the average cost per unit. Suppose the cost per unit. Suppose the cost of the producing x units is given by
c(x)=0.13X^3-70x^2 +100000x ans that no more than 300 units can be produced PER WEEK.
a.If the average cost is $1100 per unit, how many units are being produced?
b.what production level should be used in order to minimize the average cost per unit? What is the minimun average cost?
the answers are
a. Approximately 206units are produced.
b. the minimum value of about 577 dollars per unit occurs when about 269units are produced.

2007-11-28 12:24:37 · 1 answers · asked by Anonymous in Mathematics

Im Doing A Report For School. Please dont just leave websites. If you dont know Please don't just leave a website......
Thank You

2007-11-28 12:24:13 · 4 answers · asked by Anonymous in Zoology

[just a short explanation to help me understand]

2007-11-28 12:22:33 · 1 answers · asked by cigar_muffin 1 in Physics

2007-11-28 12:20:34 · 4 answers · asked by Anonymous in Physics

2007-11-28 12:19:50 · 1 answers · asked by Tim H 1 in Mathematics

How does a lepard frog accomplish its life functions, or any frog at that matter??

2007-11-28 12:17:57 · 1 answers · asked by soccerjones25 2 in Zoology

What is your favorite season? Mine is spring is my favorite. The start of something new. I got married in the spring (April 10, 2005)

2007-11-28 12:17:03 · 9 answers · asked by SNAKEDOG 3 in Weather

Calculate the resolution of an interferometric array of five radio dishes of 10 meter diameter, each located 1000 meters from each other, when it is observing a radio galaxy at 21 cm. Give your answer in arc-seconds

2007-11-28 12:17:02 · 1 answers · asked by robinhelp 1 in Astronomy & Space