- #1
punk_rawk_jazz
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This question comes from a section on "Solving Problems With Quadratic Equations." I'm having problems with this, and I can't figure out why I can't get the right answer.
Thanks in advance for the help!
I drew a digram with the information. I used the formula to find area which is a=lw. The width of this is 'X'. The length is 'X+9'. The area is 90cm^2. I could not get the right answer for this. I set it up as 90=(x)(x+9) Then solved for x. The answer that I got was 81. The answer that I was supposed to get was 6. Anyone have any ideas of what I did wrong?The length of a rectangle is 9cm longer than it's width. The area of the rectangle is 90 cm^2. Find the dimensions of the rectangle.
Thanks in advance for the help!