Math

the length of a rectangle is seven less than four times the width. Find the length if the area is 65 square units.

  1. 👍 0
  2. 👎 0
  3. 👁 103
asked by Anna
  1. L = (4 w - 7)
    Lw = 65
    (4w-7)w = 65
    4 w^2 - 7 w - 65 = 0
    ( w - 5 )(4 w + 13 ) = 0
    w = 5
    L = 4(5) - 7 = 13

    1. 👍 0
    2. 👎 0
    posted by Damon

Respond to this Question

First Name

Your Response

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

    asked by vero on March 12, 2007
  2. Math

    The length of a rectangle is 5 inches less than 3 times the width. The perimeter of the rectangle is 14 inches. Find the length and width of the rectangle. I did this: Length 3x-5; width 3x Then I did guess and check and came up

    asked by Katie on December 5, 2015
  3. basic geometry

    A rectangle has width the same asa a side of a square whose perimeter is 20m.the length of the rectangle is 9m. Find the perimeter of this rectangle. 34. The with of a rectangular picture is on-half the length . The perimeter of

    asked by vero on March 13, 2007
  4. math117

    The area of a rectangle of length x is given by 3x2 +5x. Find the width of the rectangle. The area of a rectangle with width t is given by 33t - t 2. Factor the expression and determine the length of the rectangle in terms of t

    asked by student on July 2, 2007
  5. algebra , help

    Can someone help me set up the equations thanks. Directions: Solve each of the following applications. Give all answers to the nearest thousandth. Problem: Geometry. The length of a rectangle is 1 cm longer than its width. If the

    asked by jas20 on February 20, 2007
  6. 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

    asked by Tony on February 20, 2017
  7. 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

    asked by Tony on February 20, 2017
  8. Algebra

    If the trend continued, in how many years would the median home value be $170,000? Show how obtained your answer using the linear equation you found in part c) Suppose that the width of a rectangle is three feet shorter than

    asked by Jewel on June 7, 2012
  9. MATH

    THE LENGTH OF A RECTANGLE IS 3M MORE THAN 2 TIMES ITS WIDTH. IF THE AREA IF THE RECTANGLE IS 99CM^2, FIND THE DIMENSIONS OF THE RECTANGLE TO THE NEAREST THOUSANDTH. If L = length and W = width, L = 2W + 3 and LW = 99 Substitute

    asked by TB on June 24, 2007
  10. math

    The length of a rectangle is 4 times the width. The perimeter is 50cm. Find the length and width. Write the equations. What is the length and width?

    asked by lea on March 14, 2012
  11. geometric

    The perimeter of a rectangular carpet is 70feet. The with is three -fourths the length .Find the width. 38. The length of a rectagular room is six times as the width . The perimeter 84 yards. find the width. 39. The width of a

    asked by baby girl on March 13, 2007

More Similar Questions