The length would be 10 inches.
to find perimeter, you add length+length+width+width.
since both widths and both lengths have to be the same, u add the width 2 times or 7+7=14.
next u subtract 14 from 34 or 34-14=20. 
since u still have 2 lengths that are equal, u divide 20 by 2 or 20/2=10
hope this helps! :)
        
             
        
        
        
9x + 5 = 68
9x = 63
x = 7
Cole put seven books on each shelf.
        
                    
             
        
        
        
<span>a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity.
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"Perimeter" is the distance all the way around the drawing.  If the drawing has sides, then the perimeter is the SUM of the lengths of all the sides.  It's exactly the distance an ant would have to walk along the line, to get all the way around to where he started from.
To get the perimeter of the triangle, you have to add up the lengths of the three sides.
(2a - 3) + (2a) + (3a + 1) = 
2a - 3 + 2a + 3a + 1 .
Add up all the 'a's: 2a + 2a + 3a = 7a
Add up all the just plain numbers: -3 + 1 = -2
Write them together, as a binomial:  7a - 2
THAT's your expression for the perimeter.
 
        
             
        
        
        
Make them the same denominator like 2/3 and 4/6 you can either simplify 4/6 t0 2/3 or do 2/2 * 2/3 and get 4/6