The length of a rectangle is 4 ft longer than its width. if the perimeter of the rectangle is 44 ft , find its area.

  117 ft^2

Step-by-step explanation:

The sum of the length and width is half the perimeter, so is 22 feet. If we let w represent the width of the rectangle, then w+4 is its length, and their total is ...

  w + (w+4) = 22

  2w = 18 . . . . subtract 4

  w = 9 . . . . . . divide by 2

The area is ...

  area = (9 ft)(9 ft + 4 ft) = 117 ft^2

70,000 + 6,000 + 800 + 30

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,