Algebra Repost

Which equation could be used to find the dimensions of a room that has a length of 8 feet longer than the width, x, and has an area of 240 square feet?
(A) x squared - 8x + 240 = 0
(B) 2x(2x-8x+16)=240
(C) x squared + 8x + 240 = 0
(D) x squared + 8x - 240 = 0
I got (x)(8x)=240 aka x squared + 8x = 240, which isn't any of the answer choices. I'm leaning towards (B) though, but I don't understand. Can someone please help me figure this one out? Thanks.

Responses

* Algebra - bobpursley, Sunday, May 4, 2008 at 5:45pm

You should have started with Length times width.... (8+x)x=240

o Algebra - Anonymous, Sunday, May 4, 2008 at 8:07pm

I know. That was a typo. So where do I go from there?

  1. 👍 0
  2. 👎 0
  3. 👁 243

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    A rectangular room is 5 meters longer than it is wide, and its perimeter is 22 meters. a. Letting w represent the width of the rectangle, write an equation that represents the perimeter of the room. = 22 b. Find the width of the

  2. Physic

    Consider the equation v = (1/4)zxt^2. The dimensions of the variables v, x, and t are [L]/[T], [L], and [T], respectively. The numerical factor 4 is dimensionless. What must be the dimensions of the variable z, such that both

  3. ALGEBRA WORD PROBLEM! HELP!

    And if a length of a rectangle is 3 more than twice the width and the are is 90 cm squared than what are the dimensions of the rectangle? The width of the rectangle is 43.5 and the length of the rectangle is 87. All together when

  4. math

    The diagonal of a rectangular room is 52 ft long. one wall measures 28 ft longer than the adjacent wall. Find the dimensions of the room.

  1. Math

    For a math homework assignment, Karla found the area and perimeter of a room of her house. She reported that the area of her rectangular living room is 180 square feet and that the perimeter is 54 feet. When drawing a sketch of

  2. physics

    A room has dimensions 3.00 m (height) 3.70 m 4.30 m. A fly starting at one corner flies around, ending up at the diagonally opposite corner. (a) What is the magnitude of its displacement? (b) Could the length of its path be less

  3. Math

    The passenger section of a train has width 2x-7, length 2x+3 and height x-2 with all dimensions in metres. Solve a polynomial equation to determine the dimensions of the section of the train if the volume is 117 m^3

  4. math

    the lenght of a rectangular room is 6 feet longer than twice the width. If the room's perimeter is 132 feet, what are the room's dimensions?

  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. algebra

    The length of a rectangular garden is 5 ft less than 3 times its width. If the perimeter of the garden is 22 ft, find the dimensions of the garden. I will start you off with... let the width be w, then the length is 3w - 5 I am

  3. Physics

    Consider the equation v = 1/4zxt^2. The dimensions of the variables v, x, and t are [L]/[T], [L], and [T], respectively. The numerical factor 4 is dimensionless. What must be the dimensions of the variable z, such that both sides

  4. math

    the cost of carpeting a room 12 m wide with a carpet of width 85 cm at the rate Rs 120 is Rs 28800. find the length of the room.

You can view more similar questions or ask a new question.