Mathematics - 29 October 2007

The length of a rectangle is increasing at a rate of 5 cm/s and its width is increasing at a rate of 4 cm/s. When the length is 10 cm and the width is 12 cm, how fast is the area of the rectangle increasing?

2007-10-29 13:37:43 · 1 answers · asked by JK 1

a) x^2 - 5x + 2/ 4x

Please explain how you do it

2007-10-29 13:35:43 · 3 answers · asked by Anonymous

x+2y=9
3x-2y= -5

2007-10-29 13:33:52 · 4 answers · asked by Jessica 1

I think I'm supposed to use chunking, but I don't know how.

2007-10-29 13:28:17 · 5 answers · asked by dr.whooo 2

a open bod is to be constructed from a rectangular piece of cardboard which measures 18 inches by 20 inches to make the box a square shaped cut is made at each corner of the rectangle and the sides folded up. Each square cut must be a whole number of inches on each side

2007-10-29 13:27:44 · 4 answers · asked by Anonymous

the length of a rectangular frame is 5cm more than the width. The area inside the frame is 84 square cm..FIND THE WIDTH OF THE FRAME :)

wna make sure my answer is right..
thnks

2007-10-29 13:21:30 · 5 answers · asked by Anonymous

2007-10-29 13:20:01 · 4 answers · asked by Raquel C 1

Determine the volume of the solid lying under the graph of
z= 2x+y and above the bounded region enclosed by the graphs of y^2=x and y= x^2

are the limits from x to y^2 and from x^2 to y?

2007-10-29 13:19:13 · 1 answers · asked by sdt3 1

2007-10-29 13:18:00 · 3 answers · asked by mathstudent 2

{y= 1-x/3
{5x-6y= -2
AND
{3x-5y= -1
{x+2y= 18

Thank you for your help!

2007-10-29 13:16:24 · 5 answers · asked by AshUK 1

2007-10-29 13:16:18 · 4 answers · asked by Anonymous

2007-10-29 13:15:39 · 4 answers · asked by chisha 1

2007-10-29 13:13:37 · 2 answers · asked by erikjjjacob 1

what is half of the number 50 ?

2007-10-29 13:12:21 · 8 answers · asked by Anonymous

1. Write the following geometric expression using the given symbol.

4/3 times TT times the cube of the radius (y)


2. Do you think multiplication is distributive over subtraction?
1/2 (16 10) and 1/2x16-1/2x10

3. 8+2x(36)

2007-10-29 13:09:57 · 1 answers · asked by Akira B 1

2007-10-29 13:05:04 · 2 answers · asked by T'Scoops 2

2007-10-29 13:05:02 · 1 answers · asked by Anonymous

in addition to box A ,there is a second box labeled B,which contains 10 blocks that have been numbered 1 through 10.
WHAT IS THE PROBABILITY OF DRAWING 2 RED PING-PONG BALLS OUT OF BOX A,IF AFTER THE FIRST ONE IS DRAWN IT IS PUT BACK BEFORE THE SECOND IS DRAWN?

2007-10-29 13:01:54 · 2 answers · asked by hasty 1

1) in a class of 75, a professor needs to choose 4 students. how many different ways can he choose the 4 students?


2) you invest $5000 for a period of 35 months at a rate of 2.5%. at that end of the 35 months, how much money do you have?





thanks please!!!

2007-10-29 13:00:16 · 2 answers · asked by Anonymous

in addition to box A ,there is a second box labeled B,which contains 10 blocks that have been numbered 1 through 10.
a.WHAT IS THE PROBABILITY OF DRAWING A RED OR BLUE PING PONG BALL OUT OF BOX A?

2007-10-29 12:56:21 · 5 answers · asked by hasty 1

y= 2x + 3

1. x-intercept ______
2. y-intercept ______

y= 3x - 4

3. x-intercept ______
4. y-intercept ______

y= -2x + 2

5. x-intercept ______
6. y-intercept ______

y= 2x + 7

7. x-intercept ______
8. y-intercept ______

y= -x + 3

9. x-intercept ______
10. y-intercept ______

2007-10-29 12:55:11 · 4 answers · asked by erikjjjacob 1

d=( (Vf+Vi) /2 ) (t)

can someone please rearrange this so i am solving for Vf

2007-10-29 12:53:38 · 4 answers · asked by Anonymous

1. Write the following geometric expression using the given symbol.

4/3 times TT times the cube of the radius (y)


2. Do you think multiplication is distributive over subtraction?
1/2 (16 10) and 1/2x16-1/2x10

3. 8+2x(36)

2007-10-29 12:48:47 · 1 answers · asked by Akira B 1

1. (6,0) (0,2)
2. (-2,0)(-1,-3)
3. (1,2)(5,8)
4. (6,6)(3,2)
5. (0,4)(-2,0)
6. (-2,3)(1,5)
7. (-2,7)(2,1)
8. (6,6)(8,3)

2007-10-29 12:48:40 · 3 answers · asked by erikjjjacob 1

Find the vaule of (21)^(1/4) using the Binomial Theorem correct to 3 decimal places.


I don't understand what it is asking ?

2007-10-29 12:46:00 · 1 answers · asked by Try L 1

5a^2=26a+24

Do you get the answer 6/5 and 4?

2007-10-29 12:40:15 · 5 answers · asked by Wonderer 1

How do you do a problem that says write an equation of the line that passes through point P and is parallel to the line with the given equation.

P(-3,6), y= -x - 5.

2007-10-29 12:37:53 · 5 answers · asked by Brittany l 2

Triangle DEF is similar to triangle ABC. AB = 2cm and the area is 5 sq cm...if DE = 6cm, what is the area of DEF?

2007-10-29 12:35:42 · 10 answers · asked by Anonymous

If a spider fell to the bottom of a 50-foot well, and each day climbed up 3 feet and slipped back 2, how many days would it take the spider to get out of the well?

2007-10-29 12:28:40 · 14 answers · asked by Axis Flip 3

What would be the first derivitive of y = tan^2(5x) ?

2007-10-29 12:24:47 · 2 answers · asked by Paddy Disaster 1