Mathematics - 13 September 2006

2006-09-13 10:38:26 · 12 answers · asked by daniella a 2

divided

2006-09-13 10:29:43 · 14 answers · asked by sasuke 1

In the xy - plane , the equation of line p is y =2x +5. If line m is the reflection of the line p in the x axis, what is the equation of line m?

I am not sure what reflection means, is it the line who intersects from the opposite direction? help!!
thank you

2006-09-13 10:20:05 · 9 answers · asked by Nif 2

devided

2006-09-13 10:18:55 · 9 answers · asked by sasuke 1

2006-09-13 10:18:38 · 12 answers · asked by Anonymous

Jordan and Manuel are on the track and field team at school. Running around the track one day, Jordan ran 444m and Manuel ran 777m. They both ran an even number of times around the track. How far around is the track?

***Good Luck!!!

2006-09-13 10:18:27 · 14 answers · asked by kjkrenolan@rogers.com 2

2006-09-13 10:15:00 · 13 answers · asked by daniella a 2

2006-09-13 10:14:13 · 12 answers · asked by baseball freak 1

2006-09-13 10:09:55 · 2 answers · asked by Anonymous

2006-09-13 10:08:43 · 6 answers · asked by Dominique M 1

Are you good at maths? Complete the last two in this sequence: 1=3, 2=3, 3=5, 4=4, ............................ . 10=3, 11=?, 12=?


only the results

2006-09-13 10:08:33 · 5 answers · asked by arminmanson1992 1

1) Bob is gluing ceramic tiles on a kitchen counter 62 1/2 in. long. Each tile is 4 inches square.

a) how many complete tiles in a row?

b) How many tiles are needed for each row altogether?

c) In each row, what fraction of each last tile is used?



2) Mr. Kazoo (i know, corny names) is planning to build a fence gate 40 in. wide. he plans to use boards 7 1/2 in. wide. How many boards should he buy?



3) 62 1/2 divided by 4



4) a nut co. has 40 lbs. of nuts, each can holds 7 1/2 pounds. after completely filling as many cans as possible, what part of the last can is left?


5) 12 divided by 1 1/4


6) billy has 62 1/2 feet if crepe paper left on a roll. He is cutting it into peices of four feet long.

a) how many four foot streamers can she cut?

b) what fraction of a streamer will be left on a roll?




thanks to whomever answers these...

2006-09-13 10:07:01 · 10 answers · asked by em. :] 3

Can someone explain about that? And give me examples of it? If Iam given a certain table and asked to proof if that table is a non-linear function then how do I proof it?

2006-09-13 10:03:54 · 2 answers · asked by ? 1

what does 281.4 million look like with all the zeros in it? do you just add 6 zeros? i cant think.

2006-09-13 09:56:20 · 5 answers · asked by cat 1

Assume you are 60 miles from your destination, traveling at 60 mph. When you are 59 miles from the destination, you slow to 59 mph. You continue this until you are 1 mile from your destination and are down to 1 mph. How long would it take to reach your destination?

2006-09-13 09:53:34 · 10 answers · asked by furball17 2

2006-09-13 09:49:43 · 4 answers · asked by Black C 1

Esther drove to work in the morning at an average speed of 45 mph. She returned home in the evening along the same route and averaged 30 mph. If esther spent a total of one hour commuting to and from work, how many miles did Esther drive to work in the morning?

I appreciate your help.

2006-09-13 09:44:23 · 6 answers · asked by Nif 2

2006-09-13 09:39:26 · 8 answers · asked by lincolngomes301 2

a 174 ft long fence is placed around the perimeter of a rectangular pool that has a 3 ft sidewalk around it. the actual pool w/o the sidewalk is twice as long as it is wide. what is the dimensions of the pool w/o the sidewalk?

what formulas do i need, p=2l+2w ? thanks for the help.

2006-09-13 09:33:11 · 6 answers · asked by shih rips 6

thanx

2006-09-13 09:21:42 · 3 answers · asked by 1234567890 1

2006-09-13 09:18:37 · 18 answers · asked by Anonymous

2006-09-13 09:13:50 · 7 answers · asked by Smallville_gal 1

Find the equation of the line tangent to the ellipse
b^2*x^2 + a^2*y^2 = a^2*b^2
in the first quadrant that forms with the coordinate axes the triangle of smallest possible area (a,b)>0.

2006-09-13 09:11:05 · 5 answers · asked by Anonymous

Oh Lord, this is such a dumb question but I can't wrap my head around it. My walking trail is .37 of a mile. How many times do I need to walk it to make 1 mile? I'm not an idiot I just can't think today!

2006-09-13 09:04:22 · 13 answers · asked by Anonymous

Given x,y,z > 0 and xy+yz+zx <= 8/9
and S=x+y+z+(2/x)+(2/y)+(2/z)
Find the Minimum Value of S and (x,y,z) for that S

2006-09-13 09:00:45 · 2 answers · asked by Anonymous

I have two servers at a grocery store. P(server 1) is 0.4. P(server 2) is 0.6. P(time is less than 5 min | server 1) is 1. P(time is less than 5 min | server 2) is 4/9. What is P(server 1 | time is less than 5 min)? Would it be 1/(1+ 4/9) or do the weightings from before come into play?

2006-09-13 08:52:32 · 3 answers · asked by kweise 2

Can someone explain how the following works please:

1) = 2 + 3 + 3 root 5 - root 5
= 5 + 2 root 5 (I'm not sure where 5 + 2 comes from, I
would've thought it'd be 5 + 3)

2) = 4 + 2 root 3 + 2 root 3 +3
= 7 + 4 root 3 (I know 4 + 3 = 7 and 2 + 2 = 4 but why is it
added in this way?)

3) = root 2 x root 2 + root 2 x 2 root 3 x root 2 + root 3 x 2 root 3
= 2 + 2 root 6 + root 6 + 2 x 3
= 8 + 3 root 6 (A lot of roots sorry, but very confused!)

4) = 2 x 2 - 2 x root 3 + root 3 x 2 - root 3 x root 3
= 4 - 2 root 3 + 2 root 3 - 3
= 1

Any help please would be very greatly appreciated!! :o)

2006-09-13 08:52:30 · 7 answers · asked by pixie.wings 1

What is the mathematical definition of a function?

2006-09-13 08:38:27 · 5 answers · asked by gg 4

2006-09-13 08:34:45 · 10 answers · asked by Lauren D 4

Okay, so I have a calc problem:

Directions say this problem has one local max and one local min point.

f(x)= (-1/3)x³+2x²-12

Math I've done:
d/dx = 3(-1/3)x²+4x
d/dx = -x²+4x
0 = -x²+4x
0/-x = -x²+4x / (-x)
0 = x - 4
so x = 4
then
d²/dx² = -2x+4 | x=4
= -2(4)+4 = -4 < 0
so concave down, with local max @ x=4, and no local min and no inflection point.

BUT if I don't simplify 0 = -x²+4x ... x = 0 or 4. and then:
d²/dx² = -2x+4 | x=0,4
= -2(0)+4 = 4 > 0
= -2(4)+4 = -4 < 0
and then there is a local min @ x=0 and a local max @ x=4
then:
d²/dx² = -2x+4
0 = -2x+4
-4 = -2x.. -4/(-2) = -2x/(-2)
2 = x ... so inflection point at x = 2.

The book has the bottom answer and I'm sure its correct..
All I want to know is: What am I missing? Why do I get the wrong answer? I've divided both sides by (-x), shouldn't it still work?
If the problem were: 0 = 3x²-27 .. I'd divide both sides by 3, and still get the right answer.

Why not when i divide by x?

2006-09-13 08:29:27 · 7 answers · asked by Sean06 2