Wednesday

October 1, 2014

October 1, 2014

Posted by **danica** on Friday, October 26, 2012 at 4:30pm.

- math -
**Ms. Sue**, Friday, October 26, 2012 at 4:58pmI'll get you started.

√ 1200 = 34.64

- math -
**danica**, Friday, October 26, 2012 at 5:00pmthen what i seriously have no clue what im doing

- math -
**Ms. Sue**, Friday, October 26, 2012 at 5:26pmWith a little trial and error, I found that the dimensions must be 20 by 60

- math -
**Reiny**, Friday, October 26, 2012 at 5:29pm2w + 2l = 160

w+l = 80

l= 80-w

wl = 1200

w(80-w) = 1200

80w - w^2 - 1200=0

w^2 - 80w + 1200 = 0

(w-20)(w - 60) = 0

w = 20 or w = 60

if w = 20, then l = 80-20 = 60

and if w - 60 , then l = 80-60 = 20

So the rectangle is 20 by 60 as Ms Sue found by trial-and-error

**Answer this Question**

**Related Questions**

Math - a rectangle's width is one-seventh its length, its perimeter is 160m. ...

Math - Find the Maximum area for the given perimeter of a rectangle. State the ...

Math - The first question is this: Helen designs a rectangle with an area of 225...

grade 3 math - 1) what is the greates perimeter of a rectangle with an area of ...

math - Find the dimensions of a rectangle with perimeter 40 with the largest ...

Math - 2. A rectangle whose perimeter is 80 m has an area of 384 m^2. Find the ...

MATH0098 - The perimeter of a rectangle is 58yd , and the area of the rectangle ...

geometry - The perimeter of a rectangle is 42m , and the area of the rectangle ...

geometry - The width of a rectangle is 6 cm less than its length. If the area of...

math (college) - write a quadratic function needed to find the dimension of the ...