Science & Mathematics - 6 September 2007

Having some difficulty with this subject
The plane through the point (-2,8,10) and perpendicular to the line
x=1 +t, y= 2t, z=4-3t

also diff scenario:
Find the point at which the line intersects the given plane:
x=1 + 2t, y =4t, z=2-3t; x+2y-z+1 = 0

Thankyou for your time and help

2007-09-06 10:34:27 · 3 answers · asked by JOE 2 in Mathematics

I've heard 3. I've heard 3.5. I've heard 4. I've even heard 6! And so I don't waste 5 points, how long is a mile? (Describe in anyway you think earns 10 points! lol...)

2007-09-06 10:31:20 · 13 answers · asked by Kiss 2 in Mathematics

Hey guys. I am having problem with my algebra worksheet.

Take a look at the picture below. Just copy and past that into your adress bar. The directions state "sunokuft tgese terns by splitting the squares.

For the first person to explain to me how to do those equations in a way a 14 year old would understand will get best answer. 10 pts.

picture link:
http://i121.photobucket.com/albums/o204/nunsofamerica/algebra.jpg

Thanks

2007-09-06 10:30:25 · 4 answers · asked by Ryan 2 in Mathematics

ok my little brother has this worksheet with order of operations. he has to add the grouping symbols in the correct place. the 2 operations are four times 2 minus 2 to the second power divided by 9 and plus 2 and it has to equal 6.

the 2nd is
six times seven minus three times four plus one and has to equal 27. PLEASE HELP

2007-09-06 10:25:37 · 6 answers · asked by Anonymous in Mathematics

Soccer player #1 is 9.3 m from the goal. If she kicks the ball directly into the net, the ball has a displacement labeled A. If, on the other hand, she first kicks it to player #2, who then kicks it into the net, the ball undergoes two successive displacements, Ay and Ax. What are the magnitude and direction of Ax and Ay?
Ax
_____m North--or South--or East-- or West
Ay
_____m North--or South--or East-- or West

2007-09-06 10:22:41 · 1 answers · asked by Marianna E 1 in Physics

2007-09-06 10:21:12 · 4 answers · asked by goatcheese 1 in Mathematics

The selling price of a refrigerator is $584. If the markup is 25% of the dealer's cost, what is the dealer's cost of the refrigerator? (please show work)

2007-09-06 10:17:56 · 6 answers · asked by aajain03 1 in Mathematics

2007-09-06 10:17:04 · 2 answers · asked by Crystal (is in love with him) 1 in Physics

solve the following equation:2/3(X-1)-1/5(x-3)=x+1

2007-09-06 10:16:56 · 3 answers · asked by Loki 1 in Mathematics

i would prefer to modify the scr so it could use a heat sink, and maybe change the transformer, and add more caps so it could hold a better charge and also cahrge faster and make a birhger flash ( i know the tube could overheat)

2007-09-06 10:12:24 · 3 answers · asked by hak8or 3 in Engineering

Mmk I just need sort of a reminder of the steps.
Heres the problem:
9y+4=2y+25
I know to subtract 4 from four and 25 and that leaves me with:
9y=2y+21
Do I divide 2y bye 9y?

2007-09-06 10:11:20 · 4 answers · asked by dothemooshoo247 3 in Mathematics

2007-09-06 10:11:00 · 16 answers · asked by Anonymous in Paranormal Phenomena

I mean, could I create it using only electricity, heat, and some kind of brass alloy?

2007-09-06 10:09:10 · 2 answers · asked by Anonymous in Physics

2007-09-06 10:09:02 · 4 answers · asked by readingfreak1990 1 in Physics

A bus traveled in a straight line for 3.2hours, with an average velocity of 88km/h. The bus stopped for 20 minutes, and then went south for 2.8hours at an average velocity of 75km/h. What is the average velocity for the ENTIRE trip (including when they stopped - it'd total 6.333 hours)?

What is the displacement for the ENTIRE trip?

Can someone help me with these 2 questions? I wouldn't normally ask but when you have a substitute that knows nothing about what you're learning it's hard to understand it!!

Thanks in advance....

2007-09-06 10:08:56 · 1 answers · asked by Anonymous in Physics

The question are
1. A frog is at the bottom of a 30-foot well. Each day he jumps up 3 feet, but then during the night, he slides back down 2 feet. How many days wil it take the frog to get to the top and out?

2.A 30-foot cable is suspended between the tops of tow 20-foot poles on level ground. The lowest point of the cable is 5 feet above the ground. What is the distance between the 2 poles?

Thank you soooo much.

2007-09-06 10:06:03 · 2 answers · asked by Asian_Shawty 2 in Mathematics

I need help on a piecewise function:

f(x) = { x if - 5
{ (x+2)^2 if - 3 < x
{ -x + 4 if x > 0


1. Which of the following can be conclude about limit x --> 0 f(x)

a) The limit does not exist since the right- sided and left- sided limits approaching x = 0 differ.

b) The limit does not exist because the function is not defined at x = 0.

c) The limit exists, and it’s equal to four.

d) The left-sided limit exists, but the right- sided limit does not. Thus, the limit does not exist.


2. What type of discontinuity occurs at x = -3?

a) No discontinuity exists at x=3.

b) Jump discontinuity.

c) Infinite discontinuity.

d) Removable discontinuity.


3. Determine the limit x --> infinity f(x) = ???


Thanks in advance...

2007-09-06 10:05:46 · 3 answers · asked by Anonymous in Mathematics

You're traveling in a straight line at an average velocity of 24 m/s. How long will it take you to go 560km?

I have no idea how to do this problem..it's tough to figure this stuff out when you have a sub that knows nothing about what he's teaching!

Work w/ an explanation would be greatly appreciated...thanks in advance.

2007-09-06 10:05:46 · 2 answers · asked by Anonymous in Physics

Could someone help me with these math questions? Thanks.

0.65 / 0.1

0.75 x 0.001

(-6) + (-4)

2007-09-06 10:04:39 · 9 answers · asked by Summer_101 1 in Mathematics

Write an equation.

through (-2,1) and parallel to y= -3x+1

2007-09-06 10:02:32 · 3 answers · asked by niclyl7 1 in Mathematics

2007-09-06 10:02:30 · 3 answers · asked by il0veyou101 2 in Mathematics

2007-09-06 10:02:11 · 5 answers · asked by JFL2869 1 in Weather

i have 2 do a report on it. i need 2 know it's scientific name, Genus, species, area of adaptation, area of organization, type of regrouth, dayz 2 germinate, and the male and female parts. or do u know a site i culd find out?

2007-09-06 09:58:53 · 3 answers · asked by Saraaah 1 in Botany

I am doing the drawings for my extension and it involves a load of 12V halogen lamps, transformers and various switches.

Broadly speaking, would you normally work with Live to the left of the drawing, through the switches, then transformers and lamps on the right or is it more usual to work from top to bottom?

Thanks in advance for the intelligent answers, all those who wish to just snatch a point are welcome to waste their time posting facetious nonsense

2007-09-06 09:57:14 · 6 answers · asked by Anonymous in Engineering

I've been watching this magnificent comb structure grow over the past few weeks. It is amazing...as its inhabitants.

Lucky for me they choose to live inside the shutter outside my bedroom window, so I can observe them very closely, yet behind the window pane.

If they don't make honey...what do they do for work?
What are all those cones for?
Do they sleep?

I see them eating lots of other bugs; they steal some from the spider web...

2007-09-06 09:54:28 · 7 answers · asked by LUCKY3 6 in Zoology

Full Question:

Paper is made from wood pulp. Estimate the number of trees that must be cut down to make one day's run of a big city's daily newspaper. Assume no recycling.

2007-09-06 09:54:04 · 1 answers · asked by Anonymous in Physics

I need help with this one quick. Anyone please help me out and please just dont answer it. If you can do the steps, open up paint or a drawing program and draw the steps, include the trig circle, its not hard to draw. Just save it as a picture and send it to me through e-mail. It would be greatly appreciated.
Thanks

2007-09-06 09:54:00 · 5 answers · asked by neverisenough 1 in Mathematics

2007-09-06 09:51:47 · 13 answers · asked by Anonymous in Zoology

I had my aura colours read today by a medium who approached me whilst I was at work - what is the difference between a clairvoyant and a medium and could he have been sent by my late parents ?

2007-09-06 09:50:41 · 12 answers · asked by Anonymous in Parapsychology

Animal cells have rigid cell walls.

True or
False

2007-09-06 09:50:13 · 3 answers · asked by Anonymous in Biology