SOLUTION: a rectangle has a length of five inches longer than the width"w" if the perimeter is 38 inches, find the dimensions of the rectangle

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The perimeter formula is where P is the perimeter, l is the length and w is the width.
They say that the length is 5 inches longer than the width, then
We know
So, putting it all together:




We know our width is 7.
Plug it back into w+5 =l.

Our length is 12.
So our dimensions are 12 x 7.
Let's check this to make sure.
They say the perimeter is 38, then 12(2) + 7(2) better = 38.
24 + 14 = 38. Check.
Hope this helps!