algebra 2

posted by .

The width of a rectangle is 3ft less than the length, the area is 4ft^2 find the length and width

  • algebra 2 -

    a=lw
    w=l-3
    therefore
    a=(l-3)l
    and a=4
    therefore
    4=l^2-3l
    l=4(guess&check)

    w=l-3
    w=4-3
    w=1

  • algebra 2 -

    L=-2

    because...

    a=lw

    4=(1-3)L
    4=-2L

    divide both sides by -2

    -2=L

  • algebra 2 -

    the length is l= -2
    because area does equals length*width
    which would be 4=(1-3)L
    4=2L then you will have to divide both sides bby the negative 2
    -2=L

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. basic geometric

    10. a rectangle has width the same as a side of a square whose perimeter is 20m. the length of the rectangle is 9m. find the perimeter of this rectangle. 34. The width of a rectangular picture is one-half the length. The perimeter …
  2. MA 005

    The width of a rectangle is 3ft. less than the length. The perimeter is 62ft. Find the length and the width od the rectangle.
  3. algebra

    please help! The width of a rectangle is 4ft less than the length. The area is 12 ft sq. Find the length and the width.
  4. Algebra

    The width of a rectangle is 2ft less than the length. The area is 8ft^2.Find the length and the width. The width is__ ft. The length is __ ft.
  5. geometry

    the perimeter of a rectangle is 46 feet. The width is 3ft less than twice the length. find the length and width of the rectangle
  6. algebra

    1.Write a quadratic equation in the variable x having the given numbers as solutions. Type the equation in stadard form ax^2+bx+c=0 Solution 7, only solution 2.The width of a rectangle is less than the length. The area is 4ft^3. Find …
  7. algebra

    The width of a rectangle is 3ft less than the lenght. The area is 4ft^2. Find the lenght and the width
  8. coordinate algebra

    The area of a rectangle is found by multiplying the length by the width: A = lw. A certain rectangle has an area of x2 + 7x + 12. Factor the trinomial to find the length and width of the rectangle. In the form of a paragraph, describe …
  9. Math Algebra

    Solve algebraically using only variable: The length of a rectangle is two less than three times its width. If the area of the rectangle is 65, find the length and the width. (The area of a rectangle is equal to its length times its …
  10. Algebra

    Solve algebraically using only variable: The length of a rectangle is two less than three times its width. If the area of the rectangle is 65, find the length and the width. (The area of a rectangle is equal to its length times its …

More Similar Questions