Just need a little boost to solve this question..
" The Parks department is planning a new flower bed outside city hall. It will be rectangular with dimensions by 9 m by 6m. The flower bed will be surrounded by a path of constant width with the same area as the flower bed. Calculate the perimeter of the path."
Diagram attatched.
A) Set up a quadratic Equation To model the problem
BTW, Grade 10 Math.
You are assuming that (2x + 6)(2x+9)=0 This is NOT true in your case..
Look at what you have done in post number 3 of this thread.. you obtained a quadratic equation:4x^2 + 30x -54=0
this is where you need to find your x from.
An unknown x in a qudratic equation (where a,b,c,are known) can be calculated as:
now compare the equation you obtained 4x^2 + 30x -54=0 with the above formula and find x.