Posted by carmen on Friday, February 22, 2013 at 11:55am.
the length of a rectangle is 3 yds more than twice it width and the area of the rectangle is 77yds find the dimensions of the rectangle the length and width

math  JJ, Friday, February 22, 2013 at 12:35pm
L = 3+ 2W see how I created this equation from the first sentence?
77 = LW
I will write this by substituting for L
77 = (3+2w)w
77 = 3w + 2w^2
You want to write this in the form of
ax^2 + bx + c= 0
because that will allow you to factor and find the width.
You will get two values for the width. One will be positive and the other negative. Discard the negative answer because we cannot measure distance with a negative number.
once you have the positive w, find l.
Can you finish from here?
Answer This Question
Related Questions
 math  a rectangle is twice as long as it is wide. if both of its dimensions are...
 algebra  The length of a rectangle is 3 more than twice the width. The area of ...
 math  the length of a rectangle is 5 ft more than twice the width. a)if x ...
 Algebra  The length of a rectangle is 1ft. more than twice the width, and the ...
 Math  How do I find the dimensions of a rectangle if the length of the ...
 MATH  THE LENGTH OF A RECTANGLE IS 3M MORE THAN 2 TIMES ITS WIDTH. IF THE AREA ...
 math  The length of a rectangle is 5 in. more than twice its width.? How do I ...
 math ,correction  Directions: Solve each of the following problems. Be sure to ...
 algebra , help  Can someone help me set up the equations thanks. Directions: ...
 Algebra  the length of a rectangle is 5m more than twice its width. and the ...
More Related Questions