the length of a rectangle L is 1 more than twice the width, and perimeter is 62.find the width and the width???

polynomials

(0.7x^2 + 0.2x-0.8)-(0.9x^2-1.1x-1.4)=

(3x-6)(2x+4)

4xy^2(7x^3 +3x^2y^2-9y^3)

(4x^3-3x^2+3x-4)(6x-4)

2. Originally Posted by BeBeMala
the length of a rectangle L is 1 more than twice the width, and perimeter is 62.find the width and the width???

Please post each question in a separate thread with an explanantion on what is required and your attempts at solution.

$\displaystyle P = 2W+2L$

Where $\displaystyle L = 2W+1$ and $\displaystyle P = 62$

therefore $\displaystyle 62 = 2W+2(2W+1)$

$\displaystyle 62 = 2W+4W+2$

$\displaystyle 62 = 6W+2$

Can you solve it from here?

3. Originally Posted by BeBeMala

polynomials

(0.7x^2 + 0.2x-0.8)-(0.9x^2-1.1x-1.4)=
group like terms here, expand the negative through the second expression first.

$\displaystyle (0.7x^2 + 0.2x-0.8)-(0.9x^2-1.1x-1.4)=0.7x^2 + 0.2x-0.8-0.9x^2+1.1x+1.4$ $\displaystyle =(0.7x^2 -0.9x^2)+(1.1x+ 0.2x)+(1.4-0.8)=\dots$

Can you finish it?

4. polynomial:=0.2x^2 +1.3x +0.6????

the width is 10?? how i find the length??

5. You find the length by solving the "width" equation you were given, and plugging the solution value into the "length" formula you were given.